Reference Design Cookbook - Power ... - Texas Instruments

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Reference Design Cookbook Power Management Products 3Q 2005

2

➔

Reference Design Cookbook Welcome Welcome to TI’s first Power Management Cookbook. Many thanks to Robert Kollman and his Design Services Team and TI Applications Engineering for supplying this collection of complete power solutions and design documentation from TI’s extensive library of reference designs and evaluation modules (EVMs) available to our customers. TI also has many other reference designs that can be found at: www.ti.com/powerreferencedesigns. If you do not find what you are looking for in this booklet, please check this website. It is frequently updated with new circuits. TI hopes that this Cookbook will help to simplify and streamline your power supply designs. Enjoy!

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Texas Instruments 3Q 2005

Reference Design Cookbook for Power Management Products

Table of Contents

Converter Design Topology

➔

Inside VIN

VOUT

IOUT (A)

Part Number

Page

Synchronous Buck

2.5 - 6.0

1.5

0.4

TPS62220

4

Synchronous Buck

2.5 - 6.0

1.8

1.2

TPS62040

6

Non-Synchronous Buck

12 - 18

9.6

1

TPS54350

8

Inverting Buck Boost

5

–5

1.5

TPS54350

10

6-A Monolithic Buck

4.0 - 6.0

3.3

6

TPS54610

12

5-V, 1-A Boost Converter

1.8 - 5.0

5

1

TPS61030

14

5-V, Non-Synchronous Buck in SOT-23

4.5 - 5.5

3.3

2.75

TPS64201

16

Sepic Controller

3.0 - 4.2

3.3

3

TPS43000

18

Low Input Voltage Synchronous Buck

3.0 - 5.5

2.5

15

TPS40007

20

12-V, Input Synchronous Buck

12

1.8

15

TPS40055

22

Negative Output Flyback

12

–12

0.5

UC3572

24

5 - 14

1.8

10

TPS40071

26

Dual Output Synchronous Buck

9.0 - 18.0

5.0 and 3.3

14 and 10

TPS51020

28

Wide Input Synchronous Buck

10 - 55

3.3

4

TPS40060

30

2-Phase Buck with Integrated Drivers

10 - 14

1.5

40

TPS40130

32

12

24

3.5

UCC38C4x

34

Isolated Synchronous Flyback

36 - 75

3.3 V

5

UCC3809

36

Triple Output Flyback

5 - 24

12/5/–5

1.0.5/0.3

UCC3813

38

Active Clamp Forward Converter

–36 - 72

3.3

30

UCC2580

40

Synchronous Switch-Mode Lithium-Ion Charger

4.35 - 16

2

bq24103

42

Synchronous Buck

UCC38C4x Boost

3

➔

Reference Design Cookbook

TI also has many other reference designs that can be found at: www.ti.com/powerreferencedesigns



4

TPS62220: 400-mA Synchronous Buck Converter in ThinSOT-23

Description The TPS6222x family of synchronous buck converters with integrated FETs in ThinSOT-23 can provide up to 400 mA of output current from inputs as low as 2.5 V. The circuit below was configured to provide 1.8 V at 400 mA with a 4.7-µH inductor and 10-µF output capacitor. The TPS6222x achieves high efficiency over the entire load current range by switching from traditional pulse width modulation (PWM) at high load to pulsed frequency modulation (PFM or Power Save Mode) at light load.

Specifications Parameter

Test Conditions

Web Links Reference Designs: http://www.ti.com/powerreferencedesigns

Datasheets, User’s Guides, Samples: www.ti.com

Part Number Search: TPS62220

Min

Typ

Max

Unit

Input Voltage

2.5

3.6

6.0

V

Output Voltage

1.455

1.5

1.545

V

Load Current

0

400

mA

Output Ripple Voltage Efficiency

VIN = 3.6 V; IO = 10 mA

25

40

mVPP

VIN = 3.6 V; IO = 400 mA

5

10

mVPP

VIN = 2.7 V; IO = 100 mA

90

%

VIN = 3.7 V; IO =100 mA

87

%

Evaluation Module - TPS62220EVM-014 TPS62220 1

VI 2.5 V to 6 V C3 4.7 µF


2 3

VI

SW

5

GND EN

FB

4

L1 4.7 µH

VO 1.5 V/400 mA R1 360 kΩ

C1 22 pF

R2 180 kΩ

C2 100 pF

C4 10 µF


TPS62220: 400-mA Synchronous Buck Converter in ThinSOT-23

5

Test Results Efficiency vs. Load Current

Load Transient Response

PWM Mode Operation

Power Save Mode Operation

Startup



6

TPS62040: 1.2-A Synchronous Buck Converter in MSOP-10 / 3x3 QFN

Description The TPS6204x family of synchronous buck converters with integrated FETs in 10-pin MSOP PowerPad™ or 3x3 QFN can provide up to 1.2 A of output current from inputs as low as 2.5 V. The circuit below was configured to provide 1.8 V with a 4.7-µH inductor and 22-µF output capacitor. The TPS6204x achieves high efficiency over the entire load current range by switching from traditional pulse width modulation (PWM) at high load to pulsed frequency modulation (PFM or Power Save Mode) at light load. Power save mode can be disabled by tying the MODE pin to VIN.


Test Conditions




Min

Typ

Max

Unit

Input Voltage

2.5

3-6

6.0

V

Output Voltage

1.75

1.8

1.85

V

Load Current

0

1200

mA


VIN = 3.6 V; IO = 10 mA

30

40

mVPP

VIN = 3.6 V; IO = 1000 mA

10

15

mVPP

VIN = 2.7 V; IO = 1000 mA

90

%

VIN = 3.6 V; IO =1000 mA

87

%

Evaluation Module - TPS62040 TPS62040 VIN 2.5 V to 6 V C3 22 µF

2 3 1 6 4

VIN VIN EN MODE GND

8 SW 7 SW FB 5 10 PGND 9 PGND

L1 4.7 µH

VOUT 1.8 V/1.2 A R1 470 kΩ

C1 33 µF

R2 180 kΩ

C2 100 pF

C4 22 µF

Components: C1: Taiyo Yuden JMK316BJ226ML C2: Taiyo Yuden JMK316BJ226ML L1: Sumida CDRH4D28C-4R7



TPS62040: 1.2-A Synchronous Buck Converter in MSOP-10 / 3x3 QFN

7

Test Results Efficiency vs. Load Current


PWM Mode Operation

Power Save Mode Operation

Startup



8

TPS54350 : 12-V Non-Synchronous Buck Converter

Description The TPS54350 is a medium output current synchronous buck PWM converter with an integrated high-side MOSFET and a gate driver for an optional low-side external MOSFET. Features include a wide input voltage range (4.5 to 20 VDC) with an adjustable output voltage down to 0.9 V, an adjustable switching frequency up to 700 kHz, as well as current limit, adjustable under-voltage lockout circuit, an internal slow-start circuit to limit in-rush currents, and a power good output to indicate valid output conditions. The synchronization feature is configurable as either an input or an output for easy 180° out-ofphase synchronization. This device is also available in a thermally enhanced PowerPAD™ package.


Test Conditions

Min

Input Voltage

12

Output Voltage

9.67

Load Current

0.02




Typ 9.68

Switching Frequency

Max

Unit

18

V

9.69

V

1

A

500

kHz

Output Ripple Voltage

VIN = 18 V; VOUT = 9.68 V; IO = 1A

8

mVPP

Efficiency

VIN = 12 V; VOUT= 9.68 V; IO = 1A

95

%

VIN = 18 V; VOUT = 9.68 V; IO = 1A

94

%

Reference Design Number - PMP 718 6 V Max Pull-up Voltage TP1

R1 10 kΩ Sync TP3

Enable TP4

TP2 Power Good

12-18 V Input TP5 J1 VIN GND

1 2

TP8

U1 TP554350PWP C3 10 F 25 V

1 2 3 4 5 6 7 8

BOOT VIN VIN PH UVLO PH PWRGD LSG RT VBIAS SYNC PGND ENA AGND COMP VSENSE PwrPd 17

16 15 14 13 12 11 10 9

C1 0.1 F

2.5 kΩ

5600 pF

10 kΩ

C5 1 F 25 V

TP10

R8 R10

TP7

D1 MBRS340 SMC

C6 1 F

R7

C9

L2 100 H

TP6

C10

R9

VOUT J2 9.6 V @ 1 A 2 GND 1

TP9

49.9 Ω

C11 200 Ω 100 pF TP11


1000 pF

R11 1.82 kΩ


TPS54350 : 12-V Non-Synchronous Buck Converter

9

Test Results Startup Waveform Turn On VIN = 18 V, VOUT = 9.68 V at 1 A

Efficiency

100% 95%

Efficiency

90% 85% 80% 75% 70% 65% 0

200

400 600 Load (mA)

eff 12 V

Output Ripple (across C5) VIN = 18 V at 1 A

800

1000

eff 18 V

Control Loop Gain/ Phase VIN = 15 V at 1 A

Phase

Gain

Phase Node Waveform (TP6 to GND from schematic pg. 8) VIN = 18 V; VOUT = 9.68 VOUT at 1 A



TPS54350: 5-V Inverting Synchronous Buck Boost Converter

10

Description PMP 546 uses the TPS54350 in a buck-boost mode to generate negative voltage from a positive one. This configuration can be used when the input plus the output voltage do not exceed the device’s voltage limitations of 20 V and when the sum of the input and output current do not exceed the device’s rated current of 3 A. The circuit functions by turning the hide-side switch on to increase the inductor current. Then the low switch or diode charges the output capacitor. Note, the output current is discontinuous so significant filtering is required.


Test Conditions




Min

Typ

Input Voltage

Max

Unit

5

Output Voltage

–5.06

Load Current

0.03

Switching Frequency

250


VIN = 5 V; VOUT = –5.05 V; IO = 1.2 A

Efficiency

VIN = 5 V; VOUT = –5.05 V; IO = 0.56 A

V

–5.05

–5.05

V

1.5

A

700

kHz

500 100

mVPP

75

88

%

Reference Design Number - PMP 546 6 V Max Pull-up Voltage TP1

R1 1.0 kΩ 0603 Sync TP3

Enable TP4

TP2 Power Good

U1 TPS54350PWP

TP5 J1 5 VIN

VIN GND

1 2

+

C2 220 µF

C3 10 µF

1 2 3 4 5 6 7 8

R2 100 kΩ

TP8 R4 43.2 kΩ

R5 0Ω

R6 OPEN

C8 4700 pF

VIN BOOT VIN PH UVLO PH PWRGD LSG RT VBIAS SYNC DGND SS/ENA AGND COMP VSENSE PwrPd 17

C1 0.1 µF

16 15 14 13 12 11 10 9

TP6

TP14

L2 22 µH +

8 7 6 5

C6 1 µF

C9

R7

R8

4700 pF

40 kΩ

100 kΩ

R10

C12 Q1 IRF7402 10 µF

4

C13 10 µF

C4 220 µF

C14 10 µF

VOUT J2 GND 2 -5 V @ 1.0 A 1

3 2 1

TP10

C15

R9

TP13 TP7

49.9 Ω

C11 10 kΩ

1000 pF

470 pF TP11

R11 21.5 kΩ 1

1

Do not connect to system ground



TPS54350: 5-V Inverting Synchronous Buck Boost Converter

11

Test Results Startup Waveform Turn On VIN = 5 V, VOUT = –5.05 V at 1.0 A

Efficiency 5 VIN

Efficiency 90% 80% 70% Eff (%)

60% 50% 40% 30% 20% 10% 0

200

400

600

800

1000

1200

1400

1600

Load (mA) Eff 5 V

Output Ripple (across C14) VIN = 5 VOUT at 1.0 A

Control Loop VIN = 5 VOUT at 1.0 A

Phase

Gain

Phase Node Waveform (TP6 to GND from schematic on page 10) VIN = 5 V; VOUT = –5.05 V at 1.0 A


Phase Node Waveform (LSG Pin 13 of TPS54350) VIN = 5 V; VOUT = –5.05 V at 1.0 A


12

TPS54610: 5-V, 6-A Monolithic Buck Converter

Description The TPS54610 is a member of the SWIFT™ family of synchronous buck PWM converters. The TPS54610 DC/DC regulator is ideal for low input voltage, high output current applications. The TPS54610 integrates all required active components including a true, high-performance, voltage-error amplifier that enables maximum performance and flexibility in choosing the output filter L and C components; an under-voltage-lockout circuit to prevent Startup until the input voltage reaches 3 V; an internally or externally set slow-start circuit to limit inrush currents; and a power good output useful for processor/logic reset, fault signaling, and supply sequencing. The TPS54610 is available in a thermally enhanced 28-pin TSSOP (PWP) PowerPAD™ package, which eliminates bulky heatsinks. TI provides evaluation modules and the SWIFT designer software tool to aid in quickly achieving high-performance power supply designs to meet aggressive equipment development cycles.


Test Conditions




Min

Typ

Max

Unit

Input Voltage

4.0

5.0

6.0

V

Output Voltage

3.27

3.3

3.3

V

Load Current

0

5

6

A

Switching Frequency

550

kHz


VIN = 5 V; IO = 5 A

50

mVPP

Efficiency

VIN = 5 V; IO = 1 A

95.7

%

VIN = 5 V; IO = 5 A

91.4

%

Reference Design Number - PMP 771 TP6 VIN VIN GND

2 1

+

C1

+

1

C3 220 µF JP1

TP7

R3 1

J2

1 2 3 4

SYNCH SS/ENA GND PWRGD

C2 0.047 µF

R7 10 kΩ VIN

C4 0.1 µF

TP1 C5 68 pF

C6 6800 pF R1 9.76 kΩ

U1 TPS54610PWP 28

RT

VIN VIN SYNCH VIN VIN 26 SS/ENA VIN PH 25 VBIAS PH PH 4 PWRGD PH PH 3 COMP/NC PH PH PH PH 2 VSENSE BOOT PGND PGND PGND 1 ANAGND PGND PGND PwrPd 27

Optional

R2 3.74 kΩ

C9 10 µF L1 4.7 µH

TP2

TP4 J3 +

R8 1

C10 470 µF 4V

+

C11 470 µF 4V

+

C13 1000 pF

C12 1

VOUT GND

TP8

C14 1

C8

TP5

0.047

TP3 C7

1

24 23 22 21 20 14 13 12 11 10 9 8 7 6 5 19 18 17 16 15

R5

0.012 µF 1.18 kΩ R4

R6 49.9 Ω

10 kΩ



TPS54610: 5-V, 6-A Monolithic Buck Converter

13

Test Results Startup: The input voltage was set at 5.5 V with no load on the output.

Output Ripple Voltage: The image was taken with a 5-A load and 5-V input.

VIN

VOUT

Load Transients: The input voltage was set to 5 V. The 4-A load step shown below results in 60 mVPP of output ripple.

Efficiency

Efficiency vs. Load Current Using Electronic Load 97% 96% 95% 94% 93% 92% 91% 90% 89% 0

1

2

3

4

5

6

Load Current (A)

4 Vin

5 Vin

6 Vin

Load Regulation Load Regulation

3.3 3.29 3.28 3.27 3.26 0

1

2

3

4

5

6

Load Current (A)

4 Vin


5 Vin

6 Vin


TPS61030: Synchronous Boost Converter with Integrated 4.5-A Switch

14

Description The TPS6103x family of synchronous boost converters provides a power solution for one-cell lithium or two to three-cell alkaline, NiCd, or NiMH based systems. The TPS6103x is also the ideal solution for circuits that require a 3.3-V to 5.0-V conversion. The circuit below was configured to provide 5.0 V at 1000 mA with a 6.8-µH inductor and 220-µF output capacitor. The TPS6103x achieves high efficiency over the entire load current range by switching from a fixed frequency mode of operation at high loads to a power save mode at light loads. The power save mode can be disabled by connecting the SYNC pin to VDD. The design also features a low battery detection circuit configured to pull LBO low when the input voltage reaches approximately 1.8 V.


Test Conditions




Min

Typ

Max

Unit

Input Voltage

1.8

5.5

V

Output Voltage

VIN

5.5

V

Output Current

1000


mA

VIN = 3.3 V; IO = 1 A; Sync = VDD

25

40

mVPP

VIN = 3.3 V; IO = 50 mA; Sync = GND

5

10

mVPP

VIN = 3.3 V; IO = 300 mA

96

%

VIN = 2.4 V; IO = 300 mA

93

%

Evaluation Module - TPS61030 TPS6103x L1 SW 6.8 µH

R3

VBAT 1.8 V to 5 V Input

C1 10 µF

R1

EN

5 V Up to 1000 mA

VOUT KFF

C2 2.2 µF

C3 220 µF

FB R6

LBI

R4

R2 SYNC GND


LBO

Low Battery Comparator Output

PGND


TPS61030: Synchronous Boost Converter with Integrated 4.5-A Switch

15

Test Results Efficiency vs. Output Current


Output Voltage in Continuous Mode

Output Voltage in Power Save Mode

Maximum Output Current vs. Input Voltage



TPS64201: 5-V Buck Converter - Non-Synchronous Controller

16

Description The TPS64201 is a member of the TPS6420x family of non-synchronous stepdown controllers. The TPS6420x controllers are ideal for systems powered from a 5-V or 3.3-V bus or for applications powered from a 1-cell Li-Ion battery or from a 2- to 4-cell NiCd, NiMH, or alkaline battery. These step-down controllers drive an external P-channel MOSFET allowing design flexibility. To achieve highest efficiency over a wide load current range, this controller uses a minimum on time, minimum off time control scheme and consumes only 20-µA quiescent current. The minimum on time of typically 600 ns (TPS64203) allows the use of small inductors and capacitors. When disabled, the current consumption is reduced to less than 1 µA. The TPS6420x is available in the 6-pin SOT23 (DBV) package and operates over a free air temperature range of –40 °C to 85 °C.


Test Conditions




Min

Typ

Max

Unit

Input Voltage

4.5

5.0

5.5

V

Output Voltage

3.23

3.3

3.33

V

Load Current

0

2.25

3

A

Switching Frequency

0

450

600

kHz

20

mVPP


VIN = 5 V; IO = 1 A

10

Efficiency

VIN = 5 V; IO = 1 A

93.1

%

VIN = 5 V; IO = 2.5 A

90.3

%

Reference Design Number - PMP 756 J1 4.5 to 5.5 VIN

1 2

C4 10 µF J2 GND

1 2

C5 1

R3 0.02 Ω

R4 100 kΩ U1 TPS64201

JP1

1

R7 6

SW EN 2 5 VIN GND 3 4 ISENSE FB

R6 0Ω

D1 B320A

User defined

2

Short R5 and R3 and open R6 to allow current sense using Q1’s Rds On


L1

R5 2

1

Q1 Si2323

0Ω

R8 1 MΩ

10 µH

1 2

R1 165 kΩ

C1 82 pF

C2 22 µF

3.3 VOUT @ 2.75 A

C3 1 1 2

J4 GND

R2 82.5 kΩ


TPS64201: 5-V Buck Converter - Non-Synchronous Controller

17

Test Results Startup: The input voltage was set at 5 V with no load on the output.

Output Ripple Voltage: The image was taken with a 1-A load and a 5-V input.

Efficiency

Load Transients: The input voltage was set to 5 V. The 1-A load step shown below results in 200 mV of output ripple. Channel 1: VOUT (AC coupled) Channel 2: Load Current (1 A –> 2 A)

Efficiency vs. Load Current Using R-Box

95% 94% 93% 92% 91% 90% 89% 88% 0

0.5

1

1.5

2

2.5

3

2.5

3

Load Current (A) 5 Vin

4.5 Vin

5.5 Vin

Load Regulation Load Regulation 3.33 3.32 3.31 3.3 3.29 3.28 3.27 3.26 3.25 3.24 3.23 0

0.5

1

1.5

2

Load Current (A)

5 Vin


4.5 Vin

5.5 Vin


TPS43000: SEPIC Converter - High Frequency Synchronous Controller

18

Description This reference design uses the TPS43000 in SEPIC topology to convert from 3.0 to 4.2 V input to 3.3 V at 3-A output. The TPS43000 in SEPIC topology is ideal for nickel, alkaline or lithium-ion battery applications. The TPS43000 operates either in a fixed-frequency mode, where the user programs the frequency, or in an automatic PFM mode. In the automatic mode, the controller goes to sleep when the inductor current goes discontinuous, and wakes up when the output voltage has fallen by 2%. The TPS43000 also has a user programmable discontinuous or continuous conduction mode.


Test Conditions




Min

Typ

Max

Unit

Input Voltage

3.0

3.7

4.2

V

Output Voltage

3.267

3.3

3.33

V

Load Current

0

2

3

A

Switching Frequency

300

kHz


VIN = 3.7 V; IO = 3 A

12

mVPP

Efficiency

VIN = 4.2 V; IO = 1 A

87

%

VIN = 4.2 V; IO = 3 A

85

%

VIN = 3.0 V; IO = 1 A

88.5

%

VIN = 3.0 V; IO = 3 A

80.5

%

Reference Design Number - PMP 169

J4

J3

1 2 3

1 2 3

U1 R1 TPS43000 1 kΩ SYNC/SD SWN 16 CSS SWP 15 14 R3 RT VP C6 127 kΩ CCM HDRV 13 1 µF 12 BUCK GND 11 PCM HDRV COMP VOUT 10 FG VIN 9 F = 300 KHz sw C11 C12 C13 1 µF 1 µF 4700 pF C14 470 pF R4 C15 R5 30.1 kΩ Open Open 1 2 3 4 5 6 7 8

R6 53.6 kΩ


C1 10 µF 6.3 V

L1 6.8 µH

C2 220 µF 6.3 V

C4 10 µF 6.3 V R2 1 kΩ D2 BAT54

C3 10 µF 6.3 V

C5 Open

Q1 Si4403DY

L3 1.5 µH

1 2 3

C10 470 µF 6.3 V

7 8

GND

1 2 3 4

5 6

J1 3.0 - 4.2 VIN

3.3 VOUT J2 1 2 3 4

D1 MBRS340T3

GND D2 1RFR3706

L2 6.8 µH

C7 10 µF 6.3 V

C6 10 µF 6.3 V

+

C9 220 µF 6.3 V

+

C10 220 µF 6.3 V

+

C17 10 µF 6.3 V

R7 169 kΩ


TPS43000: SEPIC Converter - High Frequency Synchronous Controller

19

Test Results Turn On VIN = 3.7 VOUT; No Load Channel 1: VIN; Channel 2: VOUT

Efficiency PMP169 EFFICIENCY 3.3 VOUT 90.0 89.0 88.0 87.0 86.0 85.0 84.0 83.0 82.0 81.0 80.0 79.0 78.0 77.0 76.0 75.0 74.0 73.0 72.0 71.0 70.0 0.2

0.6 3.0 VIN

Output Ripple 3.7 VIN; IO = 3 A

1.0

1.4 1.8 Output Current 3.7 VIN

2.2

2.6

3.0

4.2 VIN

Control Loop 3.7 VIN; IO = 3 A

Phase

Gain

Transient Response Top Trace: VO at 200 mV/div; Bottom Trace: IO at 1 A/div


FET Drain Voltage 4.2 VIN at 3 A


TPS40007: Highly Efficient, Low Input Voltage, Synchronous Buck Controller

20

Description The TPS40007 synchronous buck controller generates a 2.5-V output at up to 15 A from either a 3.3-V or 5-V input. The TPS40007 is a voltage-mode, synchronous buck PWM controller that utilizes TI’s proprietary Predictive Gate Drive™ technology to wring maximum efficiency from step-down converters. Predictive Gate Drive technology controls the delay from main switch turn-off to synchronous rectifier turn-on and also the delay from rectifier turn-off to main switch turn-on. This allows minimization of both reverse recovery and conduction losses in the MOSFET body diodes. The TPS40007 allows this design to achieve a peak efficiency greater than 94%.


Test Conditions




Min

Input Voltage

3.0

Output Voltage

2.425

Load Current

0

Switching Frequency

Typ

Max

Unit

5.5

V

2.575

V

15

A

300

350

kHz

25

mVPP

2.500

250


VIN = 5 V; IO = 15 A

20

Efficiency

VIN = 5 V; IO = 6 A

94.5

%

VIN = 3.3 V; IO = 9 A

93

%

Evaluation Module - TPS40007EVM-001 TP1 VIN

J1 1 2 3 4

+

TP8

C1 330 µF

TP2 R2 16.2 kΩ

R4

1.5 nF

5.90 kΩ

C2 330 µF

C3 22 µF

U1 TPS40007DGQ 1 2

C7

+

3 4 5

ILIM BOOT FB HDRV COMP SW SS/SD VDD GND LDRV PwrPd

10

C4 22 µF

C6 1 µF

R1 1.8 Ω

Si4866DY Q1 TP4

9 8 7 6

Si4866DY Q2

11

C11 180 pF

R5 1.8 Ω

C13 4.7 nF

C5 22 µF

L1 1 uH

R2 16.2 kΩ C12 10 nF

C8 470 µF

TP5 VOUT - 2.5 V

+

C9 470 µF

+

TP6

C10 1 µF

C14 1 µF

1 2 3 4

J2

TP7

R6 10 kΩ

C15 6.8 nF R7 698 Ω

R8 3.92 kΩ



TPS40007: Highly Efficient, Low Input Voltage, Synchronous Buck Controller

21

Test Results Gain and Phase Margin vs. Frequency

Output Voltage Ripple

Efficiency vs. Output Current

Transient Response

Typical Switch Node Waveform



TPS40055 : 15-A Buck Converter, Wide Input Range Synchronous Controller

22

Description The TPS40055 is a family of high-voltage, wide-input, synchronous, step-down converters. This family of controllers offers design flexibility with a variety of user programmable functions including soft start, UVLO, voltage feedforward, high-side current limit, and loop compensation. This design consists of two tracking, synchronized buck converters using the TPS40055 and TPS40052. The TPS40055 generates a 3.3-V/0.3-A output and the TPS40052 generates a 1.2-V/5.9-A output. The input to both converters is 12VDC. The output voltage of each converter tracks both at power up and power down. The TPS40052 converter is synchronized to run at the same frequency (phase shifted 180°) as the TPS40055 converter. Specifications Parameter

Test Conditions




Min

Typ

Max

Unit

Input Voltage

10.8

12

13.2

V

VOUT

1.75

1.80

1.85

V

IOUT

0

10

15

A

Switching Frequency

300

kHz

Output Ripple

35

Efficiency

IOUT = 6 A

mVPP

92

%

Evaluation Module - TPS40055EVM-001 TP1 J1 (+) (+) (–) (–)

1 2 3 4

TP2 R4 243 kΩ D1 BAS16

R6 71.5 kΩ C7 100 pF

C1 470 pF R2 165 kΩ

R9 16.2 k Ω

U1 TPS40055PWP 1 16 ILIM KFF C2 0.1 µF 15 2 VIN RT 3 BP5 BOOST 14 R1 1 kΩ 4 13 SYNC HDRV 12 5 SGND SW C3 2.2 nF 6 11 BP10 10 SS 7 LDRV VFB C5 8 COMP PGND 9 R5 PwrPd 10 kΩ 5.6 nF 17

TP4 R11 0Ω

HAT2168H Q1 C12 22 µF

0Ω

C8 0.1 µF

HAT2167H Q2 D2 30BQ040

C9 1 µF

TP9

C13 4.7 nF C15 47 µF

VOUT = 1.8 V

C16 470 µF

+

C17 470 µF

4 3 2 1

+

C18 0.1 µF

J1 (+) (+) (–) (–)

TP8

TP5

TP10

R7 8.66 kΩ


TP7 L1 1.7 µH

C10 0.1 µF

C4 470 pF

R3 5.49 kΩ

C14 22 µF

C6 4.7 nF

R8 226 Ω

TP3

R12 20 Ω

TP6

C11 0.1 µF


TPS40055 : 15-A Buck Converter, Wide Input Range Synchronous Controller

23

Test Results Output Voltage Ripple

Efficiency vs. Load

94.00 I OUT = 15 A 92.00 90.00 88.00 Eff (%)

86.00 84.00

V RIPPLE (10 mV/div)

82.00 80.00 78.00 0

2

4

6

8

10

12

14

16

IOUT - Output Current - A t − Time − 1 µs/div

Power Dissipation vs. Load

Transient Response

7 V OUT = 50 mV/div 6

PDISS - Power Dissipation - W

5 4 3 2 1 I OUT 5 A/div

0 0

2

4

6

8

10

12

14

16

IOUT - Output Current - A t − Time − 200 µs/div

Overall Gain and Phase vs. Frequency

160

50 Phase

140

40

120

30 20

100

10

80

0

60

−10

40

−20

20

−30

Phase - °

Gain - dB

Gain

0 100

1k


10 k

100 k


24

UC3572 PWM: Negative Output Flyback Converter

Description The UC3572 is a negative output flyback pulse width modulator used to convert a positive 12-V input voltage to a regulated –12-V output voltage at a current up to 0.5 A. The chip is optimized for use in a single inductor negative flyback switching converter employing an external PMOS switch. The controller consists of a precision reference, an error amplifier configured for voltage mode operation, an oscillator, a PWM comparator with latching logic, and a 0.5-A peak gate driver. The UC3572 includes an undervoltage lockout circuit to insure sufficient input supply voltage is present before any switching activity can occur, and a pulse-by-pulse current limit. Output current is sensed and limited to a defined maximum value. The UVLO circuit turns the chip off when the input voltage is below the UVLO threshold. The UC3572 allows this design to achieve a peak efficiency of 83%.


Test Conditions



Part Number Search: UC3572

Min

Typ

Max

Unit

Input Voltage

10.8

12

13.2

V

Output Voltage

–12.36

–12

–11.64

V

Load Current

0

0.5

A

200

230

kHz

150

mVPP

Switching Frequency

170


VIN = 12 V; IO = 0.5 A

120

Efficiency

VIN = 12 V; IO = 0.5 A

83

%

VIN = 12 V; IO = 0.25 A

82

%

Reference Design Number - PMP 703 J1 10.8 V - 13.2 VIN

1

TP1

2 3

TP2

GND

C1 22 µF 16 V

4

C2 1 µF 16 V

R1 23.2 kΩ

R100 1.74 kΩ

C4 1µF

U1 UC3572D 1 EAINV 3VREF 8 2

EAOUT RAMP 7

3

CS

GND 6

VCC

OUT

4

C3 330 pF

5

freq = 200 KHz

Q1 Si2343DS TP5

TP4

J2 1

L1 8.2 µH R2

C5 0.01 µF

R3 49.9 kΩ


2

-12 V @ 0.5 A GND

C7 22 µF 16 V

0.05 Ω

C8 47 pF

D1 B340LA

R4 100 kΩ


UC3572 PWM: Negative Output Flyback Converter

25

Test Results Turn On VIN = 12 V; 0.5-A Load Channel 1: VOUT; Channel 2: VIN

Efficiency

85%

Efficiency

80%

75%

70%

65% 0

0.1

0.2

0.3

0.4

0.5

0.6

Output Current (A)

Output Ripple VIN = 12 V; IO = 0.5 A, 0.1 V/div

Control loop VIN = 12 V; IO = 0.1 A/0.5 A Phase @ 0.1 A Phase @ 0.5 A

Gain @ 0.1 A Gain @ 0.5 A

Transient Response Top Trace: VO at 200 mV/div Bottom Trace: IO at 200 mA/div


Switch Mode Waveform Voltage at TP4 (5 V/div)


TPS40071: Buck Converter with Predictive Gate Drive™ Technology

26

Description The TPS40071EVM-001 evaluation module (EVM) is a synchronous buck converter which utilizes Predictive Gate Drive (PGD) to maximize conversion efficiency by minimizing the body diode conduction loss. The use of the TPS40071 midrange input synchronous buck controller allows the EVM to deliver 10 A from a bus voltage ranging from 5 to 14 V. The output voltage is originally set to 1.8 V, but can also be configured to provide 1.2 V to 3.3 V at a load current up to 10 A by changing one surface mount resistor.


Test Conditions




Min

Typ

Max

Unit

Input Voltage

4.75

5/12

14

V

VOUT

1.76

1.8

1.84

V

IOUT

0

6

10

A

Switching Frequency

300

Output Ripple

VIN = 5 V

Efficiency

VIN = 5 V

kHz 16

mVPP

94

%

Evaluation Module - TPS40071EVM-001 TP1

VIN = 5 - 12 V J1

C1 + 470 µF

R6 75 kΩ

C2 0.1µF R1 10 kΩ

C3 10nF R10

330 kΩ R5

C5

1.87 kΩ 8.2 nF

(+)

2

(–)

TP2 C7 10 pF

TP4

R9 1.4 k

Ω

R2 165 kΩ Power Good TP11

1

U1 TPS40071PWP 1 ILIM KFF 2 VDD RT 3 BOOST BPS 4 HDRV SYNC 5 SW SGND 6 DSP SS 7 LDRV VFB 8 COMP PGND PwrPd

2

C12 22 µF

R11 0 Ω 16 15 14 13 12 11 10 9

Q2 C9 1 µF

C8 0.1 µF

TP7

TP9 VOUT = 1.8 V

L1 1.6 µH

2

17

1

C14 22 µF

Q1

D1 BAT54 C10 0.1 µF R4 0Ω

C13 2.2 nF

C16 47 µF C15 47 µF

C17 47 µF

(+) 2

(–)

1

J1 C18 0.1 µF

TP8

TP5

C4 470 pF R7 25.5 kΩ

R12

TP10

20 Ω R3 16.2 kΩ


C8 8.2 nF

R8 100 Ω

TP3

TP6

C11 0.1 µF


TPS40071: Buck Converter with Predictive Gate Drive™ Technology

27

Test Results Transient Response

Efficiency with VOUT = 1.2 V Efficiency with Vout = 1.2 V 94 92 90

Eff (%)

88 86 84 82 80 78 0

5

Iout (A)

10

Vout = 1.8 V

Vout = 1.2 V

15 Vout = 3.3 V

Loop Gain VOUT = 5 V

Efficiency with VOUT = 1.8 V

Vin = 5 V

Efficiency with Vout = 1.8 V

50

210

94

40

180

92

30

150

90

20

120

10

90

0

60

Gain (dB)

96

88 86 84

30

-10

82 0

5

Iout (A)

10

10

100

1000 Frequency (Hz)

Vin = 5 V

Vin = 8 V

Vin = 12 V

0

-20

15

Gain (dB)

10000

100000

Phase (deg)

Phase Frequency Response VOUT = 12 V

Efficiency with VOUT = 3.3 V

Vin = 12 V Efficiency with Vout = 3.3 V

50

210

40

180

30

150

20

120

10

90

0

60

98 97 96 Gain (dB)

Eff (%)

95 94 93 92

-10

30

91 -20

90 0

5

10

15

0 10

100

1000 Frequency (Hz)

Iout (A) Vin = 12 V


Vin = 8 V

Vin = 5 V

Gain

10000

100000

Phase


TPS51020: Dual Output Buck Converter - Synchronous Dual, DDR Selectable Controller

28

Description

Web Links Reference Designs:

This reference design uses the TPS51020 in a dual synchronous buck application that provides output voltages of 5 V/14 A and 3.3 V/10 A from a wide 9-V to 18-V input. The TPS51020 utilizes feed-forward voltage mode control to attain high efficiency without sacrificing line response. Each converter runs 180 degrees out of phase with respect to the other, effectively reducing the input capacitor requirement. Other features of the TPS51020 are adjustable short circuit protection, selectable Autoskip operation for improved light load efficiency, selectable DDR tracking option, and a built-in 5-V bias regulator.


Test Conditions

http://www.ti.com/powerreferencedesigns



Min

Typ

Max

Unit

9

12

18

V

Output Voltage 1

4.85

5.00

5.15

V

Output Voltage 2

3.25

3.35

3.45

V

Load Current 1

0

14

A

Load Current 2

0

10

A

270

311

kHz

Input Voltage

Switching Frequency

229

Output Ripple Voltage 1

VIN = 12 V; IO = 14 A

25

50

mVPP

Output Ripple Voltage 2

VIN = 12 V; IO = 10 A

20

33

mVPP

Efficiency 1

VIN = 12 V; IO = 6 A

95

%

Efficiency 2

VIN = 12 V; IO = 6 A

93

%

Reference Design Number - PMP 839 C1 1000 pF

TP1

R2 100 kΩ R3 20.5 kΩ VOUT1

R5 51.1 Ω

J2 VREG5 SKIP GND VIN DDR GND J4 ENBL1 GND GND ENBL2 J5 VOUT2 V02 GND

R1 2 kΩ

1 2 3 4 5 6 1 2 3 4

VIN

R10 100 kΩ

1 2 3

1 2 C18 3 4 0.01 µF R27 5 VOUT1 0Ω 6 7 C22 8 9 0.01 µF 10 11 12 TP8 13 C28 14 0.01 µF 15 R16 1 MΩ

VOUT2 TP11

R19 51.1 Ω R20

C37 100 pF

100 kΩ

C42 1000 pF

R4 10 kΩ

R8 1 MΩ

VREG5

R9 100 k Ω

C6 100 pF

R22 2 kΩ


R21 34 kΩ

R18 10 kΩ C41 0.01 µF

C3 10 µF 25 V

R23 0Ω

C2 0.01 µF

D1 MBR0530 U1 TPS51020DBT INV1 VBST1 COMP1 OUT1_L SSTRT1 LL1 SKIP OUT1_D VO1 OUTGND1 DDR TRIP1 GND VIN REF_X TRIP2_SNS ENBL1 VREG5 ENBL2 REG5_IN VO2 OUTGND2 PGOOD OUT2_D SSTRT2 LL2 COMP2 OUT2_L INV2 VBST2

30 29 28 27 26 25 24 23 22 21 20 19 18 17 16

C19 22 pF

C23 22 pF

R11 12.7 kΩ R13 18.2 kΩ

Q3 Si7856DP

3 2 1

R26 0Ω

VOUT1

VREG5

J8

C36 10 µF 6.3 V

Q5 Si7856DP

VIN TRIP2 GND

C14 330 µF 6.3 V

+

+

+

L2 2.2 µH

C40 10 µF 25 V

C39 10 µF 25 V

C26 330 µF 6.3 V

+

C27 330 µF 6.3 V

C20 150 µF 20 V

C28 47 µF TP7 6.3 V

Q7 Si388DP

J1 5 V @ 14 A GND TP4

TP5

VIN

C21 0.1 µF 16 V

TP9

C15 47 µF 6.3 V

1 2 3

R24 0Ω D2 MBP0530

+

C13 330 µF 6.3 V

R12 10 Ω

1 2 3

R17 3.3 Ω

1 2

3 2 1

J7 1 2 3

TP3

VOUT1 L1 TP2 2.2 µH

Q4 Si7856DP

C17 1 µF

C35 1 µF

VOUT1 REG5_IN GND

3 2 1

3 2 1

R6 3.3 Ω

freq. = 270 KHz

1 2 3

Q2 Si7388DP

C5 10 µF 25 V

C4 10 µF 25 V

1 2

J3 9 V - 18 VIN GND TP6

J3 3.3 V @ 10 A 2 GND 1 TP18

VOUT2 R25 Open VOUT1

Note: 1. For fixed frequency operation, connect SKIP to VREG5. 2. For Sync Buck operation, connect DDR to VIN. 3. To discharge outputs at turnoff, connect VOx to VOUTx, GND V0x if discharge is not required. 4. Connect REG5_IN to 5 V output voltage. 5. Connect TRIP2 to VIN for sync buck output.


TPS51020: Dual Output Buck Converter - Synchronous Dual, DDR Selectable Controller

29

Test Results Efficiency

Turn on: VIN = 12 V; 0-A Loads

95.0% 94.5% 94.0%

Efficiency

93.5% 93.0% 92.5% 92.0% 91.5% 91.0% 90.5% 90.0% 0

2

4

6

8

10

12

14

16

Output Current (A) 5V

5-V Output Ripple VIN = 12 V; IO = 14 A, 20 mV/div

3.3-V Output Ripple VIN = 12 V; IO = 10 A, 20 mV/div

5-V Control Loop VIN = 12 V; IO = 14 A

5-V Transient Response Top Trace: 5 VOUT at 100 mV/div Bottom Trace: IO at 5 A/div

3.3 V

Phase

Gain



TPS40060: Buck Converter - Wide Input Range, Synchronous Controller

30

Description The TPS40060EVM evaluation module (EVM) is a high-efficiency, wide input range synchronous buck converter providing a fixed 3.3-V output at 4 A from a 10-V to 55-V input. The EVM is designed to start up from a supply, so no additional bias voltage is required for start-up directly from the supply. The module uses the TPS40060 with P-channel, high-side MOSFET.




TPS40060EVM works over the full input range of the TPS40060 to produce a regulated 3.3-V output at up to 4 A of load current. Using lossless RDS(ON) current sense and a high-side, P-channel MOSFET simplifies the circuit design without sacrificing performance. The evaluation module provides test points for input voltage, output voltage, key waveforms and a 50-Ω connection point in the feedback loop for non-invasive measurements of the feedback loop along with an oscilloscope jack for easy measurements of output ripple.


Test Conditions

Min

Input Voltage

10

Output Voltage

3.0

Load Current

0

Switching Frequency

Typ 3.3

225

250

Max

Unit

55

V

3.6

V

4

A

275

kHz


VIN = 55 V; IO = 4 A

30

mVPP

Efficiency

VIN = 12 V; IO = 3 A

90

%

Evaluation Module - TPS40060EVM TP1 J1 +

C1 470 µF

C12 1.0 µF

C9 0.1 µF

R8 53.8 kΩ

TP2 R4

R18 2.0 Ω

806 kΩ DI BAS16

C2 680 µF

1

C3

2

0.1 µF

3 4 5

C4

3.3 nF

6 7

R1

8

C6 1.52 kΩ

R5

39 pF C7

15.4 kΩ C5

U1 TPS4006xPWP ILIM KFF VIN RT BOOST BP5 HDRV SYNC SW SGND BP10 SS/SD LDRV VFB PGND COMP

C11

39 µF

R12

16 15

73.2 kΩ

TYP5

14 13

TYP7

L1 7.8 µH

R11

12 11

10 Ω

10

J2 +

9

TYP6 C8 0.1 µF

3900 pF

C10 0.1 µF

C1 470 µF

C15 47 µF

C16 10 µF

C17 0.1 µF

R7 402 Ω

10 nF

R9 49.9 Ω

6.04 kΩ TYP3


C13 1.0 µF

TYP4

TP8


TPS40060: Buck Converter - Wide Input Range, Synchronous Controller

31

Test Results Efficiency VIN = 10 to 55 V; IOUT = 0-4 A

TPS40060EVM-002 Efficiency 95.0%

Efficiency

90.0%

85.0%

80.0%

75.0%

70.0% 0

0.5

1 55 V

1.5 42 V

2 2.5 3 Load Current (Amperes) 36 V

24 V

16 V

3.5

4

4.5

10 V

Loop Response Gain and Phase Plot

Loop Response of TPS40060EVM-002 120

60

40 Gain (dB)

70 20 20 0 -30 -20

-40 1.00E+01

1.00E+02

10 V 4 A Gain


1.00E+03 1.00E+04 Frequency (Hz) 55 V 4 A Gain

1.00E+05

10 V 4 A Phase

-80 1.00E+06

55 V 4 A Phase


TPS40130: 2-Phase Buck Converter - Synchronous Controller with Integrated Drivers

32

Description The TPS40130EVM-001 evaluation module (EVM) is a high-efficiency, two-phase synchronous buck converter providing a fixed 1.5 V output at up to 40 A from a 12-V input bus. The EVM is designed to start up from a single supply, so no additional bias voltage is required for start-up. The module uses the TPS40130 high-frequency two-phase controller.


Test Conditions

Input Voltage Output Voltage

R14 = 8.88 kΩ

Load Current

VIN = 14 V; IO = 0 A




Min

Typ

Max

Unit

10

-

14

V

0.7

-

3.3

V

Ripple Frequency

40

A

660

kHz


VIN = 14 V; IO = 40 A

30

mVPP

Efficiency

VIN = 12 V; IO = 20 A

91

%

Evaluation Module - TPS40130EVM-001 12 V_IN1 TP2 12 V_IN1+

J1

1 V5_OUT_RTN 1 V5_OUT_SNS TP8 J2 J3 1 V5_OUT–

TP6 12 V_IN1–

1 V5_OUT

1 V5_OUT_RTN TP9 1 V5_OUT+

J4

12 V_IN2 TP16 12 V_IN2+

J5

TP7 HI_DRV1 C2 22 µ

ISENSE 1

L1 0.68 µH

R5 2.2 Ω

+

+

C14 220 µ

C16 220 µ

+

+

C7 220 µ

R11 2.7 Ω

R12 5.11 Ω

D1

VNS

TP3 LOOP INJECTION TP4 A

C9 1.0 n C10 1.0 n

R8 10 kΩ

R8 39.2 kΩ 1

R7 1

C4 47 p 1

1

DIFFOUT

C5

TP5 A_GND

C13 100 n

R4 10 kΩ R2 49.9 Ω

C23 220 µ

1

Not used on PCB

2

All capacitor values given in farads unles otherwise specified

3

All resistor values given in ohms unless otherwise specified

C11

REF

1

R13 5.11 Ω

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

U1 TPS40130DBT PGND LDRV1 LDRV2 VN5 SW2 SW1 HDRV2 HDRV1 BOOT2 BOOT1 SS OVSET UVLO VOUT BP5 GSNS AGND DIFF CS2 CS1 CSRT2 CRST1 RT COMP PGOOD VREF ILIM +EA EN/SYNC FB

R20 10 Ω

30 29 28 27 26 25 24 23 22 21 20 19 18 17 16

C30 22µ

C27 1.0 n R28 2.2 Ω

Q5

TP10 SOFT START C18 1.0 µ

R16 5.11 Ω

C3 0.1 µ

R1 2.94 kΩ

+

C26 0.1 µ

R10 2.7 Ω

R3 0Ω

+

C7 0.1 µ

VNS TP1 LO_DRV1

C20 220 µ

C29 22µ

Q4 R26 4.32 kΩ

L2 0.68 µH

SS

C12 220 µ

VN2

C24 ISENSE 2 0.1 µ

C8 0.1µ

C6 1.0 n Q2

R17 5.11 Ω

R15 5.11 Ω

Q3 R9 4.32 kΩ

Q1

TP18 12 V_IN2–

TP15 HI_DRV2

VN1

C1 22 µ

J6

Q6

GND

R22 2.7 Ω

R26 2.7 Ω

R29 0Ω

SS

TP17 LO_DRV2

VN2 VNS

R30 11.5 kΩ

C21 3.3 n R27

C22 1.0 µ C25 1.0 µ

1

0Ω

R31 1.62 kΩ 1

C28 1.0 n

R23 10 kΩ VNS ENABLE

R24 10 kΩ

FB R18 2.21 kΩ R14 8.66 kΩ 1

C15 0.1 µ 1

R19 1.0 kΩ

C19 10 n 1

R21 8.25 kΩ 1

TP11 TP13 ENABLE PW_GD TP12 TP14 A_GND A_GND GND2 1



TPS40130: 2-Phase Buck Converter - Synchronous Controller with Integrated Drivers

33

Test Results Transient Response: 5-55 A at 3A/ms, I1V5_OUT (10 A/div), V1V5_OUT(rip) (20 mV/div), Time 10 ms/div

Efficiency HPA087A Efficiency 92 90

Efficiency

88 86 84 82 80 4

14 Vin 10 V

24 Output Current

34

Vin 12 V

Vin 14 V

Negative Transient: 5-55 A at 3A/ms, I1V5_OUT (10 A/div), V1V5_OUT(rip) (20 mV/div), Time 10 ms/div

Line Regulation VIV5_OUT = 20 A Line Regulation @ 20 A Load 1.515

Output Voltage

1.513 1.511 1.509 1.507 1.505 10

11

12

13

14

Input Voltage Line Reg

Load Regulation Load Regulation 1.515

OUtput Voltage

1.513 1.511 1.509 1.507 1.505 0

10

20

30

40

Output Current 10 V In


12 V In

14 V In


UCC38C4X: Boost Converter - Low-Power PWM Controller

34

Description This reference design uses the UCC38C43 in boost topology to convert from +12 V to +24 V at 3.5 A. The boost topology with Schottky output diodes enables PMP781 to achieve efficiencies greater than 95%. One note of caution with this topology is that it does have short-circuit protection. A short on the output shorts through the inductor and output diode. Even if current mode control were added, this path still exists. If short circuit protection is needed, using a different topology such as flyback, SEPIC or a current limit circuit such as a fuse, polyfuse or hot swap should be considered.


Test Conditions



Part Number Search: UCC38C4X

Min

Typ

Max

Unit

Input Voltage

11

12

13

V

Output Voltage

23.25

24

24.73

V

Load Current

0

2

3.5

A

Switching Frequency

100

kHz


VIN = 12 V; IO = 3.5 A

200

mVPP

Efficiency

VIN = 12 V; IO = 1 A

91

%

VIN = 12 V; IO = 3 A

94

%

Reference Design Number - PMP 781 J1 VIN 12 V ±5%

MMBT2907 Q100 R2 OPEN C10 OPEN

R8 0Ω

R9 2.61 kΩ

VREF

C13 1 µF

1 2 3 4

L1 22 µH

R100 100 kΩ

U1 UCC38C43 COMP VREF VDD FB OUT CS RT/CT GND

J2

8 7 6 5

VREF

R12 1.5 kΩ


R13 C17 150 kΩ 18000 pF

D1 MBRB2535CTL 1

C3 .1 µF R5 10 Ω

C100 .1 µF

C12 OPEN R6 22.6 kΩ

1 2

C18 27000 pF

C9 10 µF 16 V

2 +

C11 1 µF

C4 330 µF 35 V

+

C5 330 µF 35 V

+

C6 330 µF 35 V

+

C7 330 µF 35 V

+

C8 330 µF 35 V

24 V @ 3.5 A (max) GND

C2 2.2 µF 35 V

Q2 IRL1104S R10 10 Ω R14 100 kΩ


UCC38C4X: Boost Converter - Low-Power PWM Controller

35

Test Results Turn On VIN = 12 V; No Load Channel 1: VIN; Channel 2: VOUT

Efficiency PMP781 EFFICIENCY 24 VOUT

95.0 94.0 93.0 92.0 91.0 90.0 89.0 88.0 87.0 86.0 85.0 84.0 83.0 82.0

0.3 0.5 0.8 1.0 1.3 1.5 1.8 2.0 2.3 2.5 2.8 3.0 3.3 3.5 Output Current (Amps) 12 VIN

Output Ripple VIN = 48 V; IO = 3 A

Control Loop VIN = 12 V; IO = 3 A

Phase

Gain

Transient Response Top Trace: VO at 1 V/div; Bottom Trace: IO at 1 A/div


FET Drain Voltage


UCC3809: Isolated Flyback Converter - Primary Side Controller

36

Description This reference design uses the UCC3809, a current mode controlled synchronous flyback converter that can deliver 5 A of continuous output current at 3.3 V from an input range of 36 to 75 VDC. The UCC3809 provides all necessary functions for the control of isolated off line and DC/DC power converters. This design results in a highly efficient, small, cost-effective solution for low-power isolated applications. Peak efficiency using the UCC3809 and synchronous rectification are greater than 88%.


Test Conditions



Part Number Search: UCC3809

Min

Typ

Max

Unit

Input Voltage

36

48

75

V

Output Voltage

3.0

3.3

3.6

V

Load Current

0

5

A

Switching Frequency

100

kHz


VIN = 48 V; IO = 5 A

50

mVPP

Efficiency

VIN = 48 V; IO = 5 A

85

%

Reference Design Number - PMP 665 C1 2200 pF 2 kV

2 3

C3 0.47 µF 100 V

3 1

C3 4 0.47 µF 2 100 V

+

C4 R1 33 µF 100 V 100 kΩ 0.25 W

T1 G027270

C5 0.1 µF 100 V

3

R3 44.2 kΩ 0.25 W

D2 MURS120T3

ON/OFF RTN

1 2

R22 4.12 kΩ

C25 220 pF

U1 UCC3809D-2 1 8 REF 7 2 FB SS VDD 6 3 RT1 OUT 4 RT2 GND 5 C18 Q4 MMBT3904 0.01 µF

R21 1 kΩ

R8 11.3 kΩ

R18 3.01 kΩ


R12 C18 7.50 kΩ 0.1 µF

Q1 MMBT3904

D3 6.8 V

VSB C8 0.1 µF

Q3 Si4848DY

Q2 Si4848DY

3 2 1

R23 10 kΩ

C23 0.047 µF R20 0Ω

C11 22 µF 6.3 V

C12 22 µF 6.3 V

C13 + C14 22 µF 330 µF 6.3 V 6.3 V

+

C15 330 µF 6.3 V

C16 1 µF

1 2

J2 3.3 V/5 A GND

C17 2200 pF 2 kV U2 H11A817A

R17 475 Ω C26 220 pF

C6 0.1 µF

R4 0Ω

8 7 6 5

4

R13 475 Ω

Q5 MMBT3804

D4 D5 18 V 18 V

6 7

R4 10

C10 1 uF

5

R7 0.68 Ω 1W

R8 11.3 kΩ

C20 560 pF

C9 10 µF 16 V

R2 1 kΩ

2 9

D6 R5 BAS 16 20 Ω

J4

8 4

10

C7 2200 pF 2 kV

D1 BAS16

1

5 6 7 8

J1 1

1 2 3

-48 VIN _RTN -48 VIN EARTH_GND

L1 1.17 mH

4

1

3

2

R10 3.01 kΩ

C21 OPEN

R15 10 kΩ

R16 C22 30.1 kΩ 0.018 µF D7 BAS 18

C24 1 uF

VSB R11 1 kΩ R14 3.01 kΩ

U3 TL431AID 2 3 6 7

R18 30.1 kΩ


UCC3809: Isolated Flyback Converter - Primary Side Controller

37

Test Results Turn On VIN = 48 V; No Load

Efficiency

PMP665 Efficiency

100.0%

90.0% 80.0%

70.0% 0.05

1.00

2.00

36 VIN

Output Ripple VIN = 48 V; IO = 5 A

3.00 Iout, A

48 VIN

4.00

5.00

6.00

60 VIN

Control Loop VIN = 5 V; IO = 15 A

Phase

Gain




UCC3813: Triple-Output Flyback, Low-Power Economy PWM Controller

38

Description The UCC3813-5 controller is used in a continuous flyback converter to generate three output voltages. The outputs are +12 V/1 A, +5 V/0.5 A and –5 V/0.3 A. The input voltage ranges from 5 V to 24 V. The UCC3813 family of high-speed, low-power integrated circuits contain all of the control and drive components required for off line and DC/DC fixed-frequency current mode switching power supplies with minimal parts count.


Min

Input Voltage




Typ

+5

VOUT1

+11.40

IOUT1

0.25

VOUT2

+4.75

IOUT2

0

VOUT3

–4.75

IOUT3

0

+12 +5.00 –5.00

Switching Frequency

Max

Units

+24

V

+12.6

V

1.00

A

+5.25

V

0.50

A

–5.25

V

0.30

A

130

kHz

Reference Design Number - PMP 469 U3 UA78M05CKTP J4 1 +5 V @ 0.5 A IN OUT 2 GND GND + R11 C13 5.1 kΩ 150 µF

D2

VIN GND

VIN

J1 5 V to 24 V C17 47 µF

+

C18 10 µF

C19 10 µF

C20 10 µF

R12 100 kΩ R13 6.49 kΩ

C21 10 µF

C22 0.1 µF D2 MURS120 R14

R18 10 kΩ C30 5600 pF

R20 2 kΩ TP5

R21 2 kΩ

Q4 SUD30N04-10

4.7 Ω

C34 220 pF

TP6

U5 UCC3813-5 1 COMP REF 2 FB VCC 3 CS OUT 4 RC GND 138 kHz C36 330 pF

8 7 6 5

R19 C34 .22 µF

C32 .1 µF

+

+

+

D5

C25 150 µF COMP IN OUT U4 UA79MB50KTP L2

+

C28 100 µF

+

C29 100 µF

+

C26 100 µF

+

J5 1 2

1 2

2 µH

MURD320 C27 100 µF

R15 0.0112 Ω

R17 11.8 k

R18 C31 5.62 kΩ .068 µF

T1 8 MURS120 C14 + C15 + C16 8T 150 µF 150 µF 150 µF 1 9 8T 3T + C23 C24 4 10 150 µF 150 µF D4 7 2 3T 13T 5 6 MURS120 3.15 µH

+

-5 V @ 0.3 A GND J6

+12 V @ 1 A GND

D6

10 Ω BAS16 C33 22 µF

TP7

R22

R23

10 kΩ

0Ω



UCC3813: Triple-Output Flyback, Low-Power Economy PWM Controller

39

Test Results Regulation and Efficiency VIN IIN (V) (A)

VOUT1 (V)

IOUT1 (A)

VOUT2 (V)

IOUT2 (A)

VOUT3 (V)

IOUT3 (A)

Efficiency (%)

5.00

4.46

+11.93

1.008

+4.94

0.400

–5.03

0.400

71.8

12.01

1.761

+11.94

1.008

+4.94

0.400

–5.03

0.400

75.7

24.03

0.899

+11.94

1.008

+4.94

0.400

–5.03

0.400

74.1

4.97

2.133

+11.94

0.500

+4.97

0.200

–5.03

0.200

75.2

12.00

0.876

+11.95

0.500

+4.97

0.200

–5.03

0.200

75.9

24.04

0.449

+11.95

0.500

+4.97

0.200

–5.03

0.200

73.9

5.00

1.069

+11.94

0.250

+4.98

0.100

–5.03

0.100

74.4

12.04

0.446

+11.95

0.250

+4.98

0.100

–5.03

0.100

74.1

24.02

0.232

+11.95

0.250

+4.98

0.100

–5.03

0.100

71.4

Calculated Loop Gain Loop Gain (T), Vin = 4.75V 100

50 20 ⋅ log

( T (f i ) ) 0

50 10

100

3 1 . 10

4 1 . 10

5 1 . 10

4 1 . 10

5 1 . 10

fi

Loop Gain Phase Margin, Vin = 4.75V 100

0 360 2⋅π

⋅ arg

(T (f i )) 100

200 10

100

3 1 . 10 fi



UCC2580 PWM: Active-Clamp Forward Converter

40

Description

Web Links Reference Designs:

This reference design uses the UCC2580 in an active-clamp forward converter that can deliver up to 30 A of continuous current at 3.3 V from an input range of –36 V to –72 V. The active-clamp topology with self-driven secondary synchronous MOSFETs allows PMP 206 to achieve efficiencies greater than 90%. The design includes remote sense connections for point-of-load regulation.

Specifications Parameter Input Voltage Output Voltage Load Current Switching Frequency Output Ripple Voltage Efficiency

Test Conditions

http://www.ti.com/powerreferencedesigns



Min –36 3.2 0

Typ –48 3.3

Max –72 3.4 30

Unit V V A kHz mVpp % %

300 25 93 89

VIN = –48 V; IO = 30 A VIN = –48 V; IO = 10 A VIN = –48 V; IO = 30 A

Reference Design Number - PMP 206 D100 R12 49.9 kΩ

BIAS

Q3 FZT655

D2

D3 12-V

MMSD914

C8 10 µF

R101 1 kΩ

BAT54 C100 1 µF

L1 PA0373 1

11

6

7

SENSE-

VIN+ C2

2

9

4

8

0.1 µF

3 3

3 2 1

D9 BAT54

Q1 Si7846DP

Q2 IRF6216

R100 10 kΩ

R103 0.1 Ω 1W

R2 0.1 Ω 1W

VINR8 R9 26.7 kΩ 1 2 3 4 5 6 7 8

BIAS C9 0.1 µF

200 kΩ U1 UCC2580D-1 DELAY SHDN SS LINE REF VDD EAIN OUT1 PGND EAOUT OSC1 OUT2 OSC2 CLK GND RAMP R7

BIAS C17 0.1 µF

5

1

3

Q8 HAT2099H

C104 1 µF

4

1

10 kΩ

R26

R29 3.48 kΩ


Q9 HAT2099H

4

3

2

VOUT+

R28 499 Ω

R20 10 Ω

TP5

SENSE+ R24 23.7 kΩ

10 kΩ C103 100 pF R6 45.3 kΩ

R27 1 kΩ

C19 1000 pF

TP7

4

1

3

2

C106 4700 pF 2 kV

R23 750 Ω C13 1000 pF

U2 TLV431ACDBV5

BIAS2

C3 100 pF

C15 33 pF

C14 3300 pF

R22 49.9 kΩ

R37 30.1 kΩ SENSE–

R35

Q4 MMBT3904

VOUT-

1

BIAS2

U7 H11A817A

BAS16

100 kΩ D4 R30 10 kΩ

1

5

U5 H11A817B

2

2

2

TP4 R25

C4 330 pF

U4 TL331DBV 4

ON/OFF

R102 10 Ω

100 kΩ

3

R41 4.99 kΩ R21

C16 100 pF

REF

R5 4.02 kΩ

3

C102 10 µF 6.3 V

Q6 HAT2099H

4

1

1

C6 0.1 µF C5 1 µF

C11 + C12 + C1 180 µF 180 µF 180 µF 6.3 V 6.3 V 6.3 V

REF

R3 1 kΩ

R16 34.8 kΩ

16 15 14 13 12 11 10 9

2

5

R4

150 kΩ

2

4

16 V

R31 9.53 kΩ

VOUT+

5

Q5 HAT2099H

4

8 7 6 5

C7 1 µF

VOUT = 3.3 V @ 30 A

+ 5

200 V C24 1 µF 100 V

C23 1 µF 100 V

C22 1 µF 100 V

REF

BIAS2

C101 10 µF

T1 PA0369

–36 V to –72 V Input

R32 150 kΩ

Q100 MMBT3904

D101 5.1-V

R38 10 kΩ

VOUT+

C105 1 µF

R19 10 Ω

R33 10 kΩ

499 Ω U6 TLV431ACDBV5

C18 100 pF

R34 4.53 kΩ

SENSE–


UCC2580 PWM: Active-Clamp Forward Converter

41

Test Results Efficiency

Efficiency - %

Turn On VIN = –48 V; No Load Top Trace: Enable at 5 V/div; Bottom Trace: Vout at 2 V/div

100 95 90 85 80 75 70 65 60 55 50 45 40 0

5

10

15

20

25

30

IOUT - Amps

48.0 V

36.0 V

Output Ripple VIN = –48 V; IO = 30 A

72.0 V

Control Loop VIN = –48 V; IO = 30 A

Phase

Gain


SOA for –48-V Input

PMP206 Safe Operating Area 90.0 80.0 70.0 60.0 50.0 40.0 30.0 20.0 0.0

5.0 Nat conv


10.0 100LFM

15.0

20.0 200LFM

25.0

30.0

300LFM


42

bq24103: Synchronous, Switch-Mode Lithium-Ion Charger

Description The bq241xx is a synchronous, switch-mode battery charger with internal power FETs capable of supplying up to 2 A of charge current. It enables higher charge current while reducing the amount of heat generated, making it ideal for use in systems that incorporate one-, two- and three-series cell lithium-ion or lithium-polymer battery packs. Applications include portable DVD and media players, smart handhelds, medical, industrial and other portable equipment. The integrated PWM controller operates at a fixed frequency of 1.1 MHz, allowing the use of a small inductor and output capacitor. The IC delivers high-accuracy current and voltage regulation for precise battery charging, overvoltage protection, multiple charge status outputs for charge progress indication and charge termination. Charge termination is based on a minimum current level. A programmable charge timer provides a safety backup for termination. Other versions of the IC also allow the portable system’s microcontroller to control the battery charging profile and termination with digital inputs to the IC.


Min

Input Voltage



Part Number Search: bq24103

Typ

4.35

Charge Current Sync PWM

Max

Unit

16

V

2

A

1.1

MHz

Evaluation Module - bq24103EVM bq24103 VIN

L1 10 µH

IN

OUT

IN

OUT

R1 0.1 Ω/0.5 W Pack+

C1 0.1 µF

VCC

PGND

CE

PGND

PG

SNS

STAT1

BAT

C2 10 µF

C3 0.1 µF

R9 STAT2

Temp

VIN

CELLS VTSB

10 kΩ TTC C4 0.1 µF

TS

VTSB

ISET1

VSS

ISET2

R4 5.1 kΩ R2 7.5 kΩ

C5 0.1 µF

R3 7.5 kΩ

VIN R6 1.5 kΩ Done


Pack–

VIN R7 1.5 kΩ Charge

R5 0Ω

VIN R8 1.5 kΩ Adapter Present

•

VIN = 12 V

•

Icharge = 1.33 A, Iprecharge = 0.13 A

•

Typical Effciency: 91%

•

Surface Temp (Assume Amb ient Temp 25 °C): 50~55 °C at 91% Efficiency


bq24103: Synchronous, Switch-Mode Lithium-Ion Charger

43

Test Results Efficiency vs. Output Charge Current

Efficiency vs. Output Charge Current

IO(CHARGE) = Output Charge Current - A

IO(CHARGE) = Output Charge Current - A

QFN Package



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