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2 Schematic

Figure 2-1

 illustrates the TPS65265EVM-705 EVM schematic.

0.047uF

C15

0.01uF

C26

0

R6

1
2
3

J6

22uF

C17

GND

GND

GND

0

R7

DNI

TP8

0.047uF

C22

0

R11

22uF

C23

GND

0

R12

DNI

TP11

GND

22uF

C3

22uF

C2

GND

0.047uF

C1

0

R1

J3

GND

TP9

TP10

J2

GND

TP6

TP7

J1

GND

TP1

TP3

EN1

GND

J5

GND

TP2

TP4

VIN

10.0k

R9

VOUT1 1.2V 5A

VOUT2 1.5V 3A

VOUT3 1.8V 2A

VIN 12V

VFB1

22uF

C18

GND

VFB2

VFB2

VFB3

22uF

C24

GND

VFB3

GND

0.01uF

C27

GND

1
2
3

J7

GND

EN2

GND

1
2
3

J8

GND

EN3

GND

10.0k

R16

20.0k

R17

EN1

EN2

EN3

GND

VIN

GND

15.0k

R10

DNI

R13

0

R22

V7V

1uF

C16

22uF

C8

1uF

C10

1uF

C11

82.5k

R15

PGOOD

82pF

C13

22pF

C12

22pF

C21

GND

22pF

C29

DNI

TP5

10.0k

R4

10.0k

R5

GND

VFB1

22pF

C19

GND

22pF

C25

GND

4.7uH

L2

4.7uH

L3

22uF

C5

DNI

C4

GND

GND

DNI

C7

22uF

C6

GND

GND

0

R2

1
2
3

J9

MODE

GND

V7V

DNI

C32

DNI

C34

DNI

C33

MODE

PG_DLY

PG_DLY

4

7,8

1,2,3

5,6,

DNI

Q1

DNI

L4

DNI

L5

DNI

L6

DNI

C30

DNI

C31

GND

GND

PGOOD

VOUT1

VOUT2

VOUT1

VOUT2

SYNC

SYNC

DNI

J4

GND

DNI

TP12

DNI

TP14

VOUT4 1.8V 2A

Vo

Vo

GND

PGOOD

GND

GND

2.2uH

L1

V7V

1

PGOOD

2

EN1

3

EN2

4

EN3

5

FB2

6

COMP2

7

MODE

8

BST2

9

PGND2

10

LX2

11

PVIN2

12

PVIN3

13

LX3

14

PGND3

15

BST3

16

SQE_DLY

17

COMP3

18

FB3

19

ROSC

20

AGND

21

FB1

22

COMP1

23

PG_DLY

24

BST1

25

PGND1

26

PGND1

27

LX1

28

LX1

29

PVIN1

30

PVIN1

31

PSM

32

PAD

33

U1

TPS65265RHBR

10.0k

R27

DNI

TP15

DNI

TP16

TP13

22uF

C9

100k

R21

100k

R18

100k

R19

100k

R20

10.0k

R3

2700pF

C14

2700pF

C20

2700pF

C28

6.8k

R14

6.8k

R8

33k

R23

33k

R24

33k

R25

33k

R26

Figure 2-1. TPS65265EVM-705 Schematic

www.ti.com

Schematic

SLVUAK9A – DECEMBER 2015 – REVISED MAY 2021

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TPS65265 Buck Converter Evaluation Module User's Guide

3

Copyright © 2021 Texas Instruments Incorporated

Summary of Contents for TPS65265

Page 1: ...s Table of Contents 1 Background 2 2 Schematic 3 3 Board Layout 4 4 Bench Test Setup Conditions 7 4 1 Header Description and Jumper Placement 7 5 Power Up Procedure 9 6 Bill of Materials 10 7 Revision...

Page 2: ...ary of Performance Test Conditions Performance VIN 4 5 to 17 V spa fsw 610 kHz spa 25 C ambient Buck1 1 2 V up to 5 A spa Buck2 1 5 V up to 3 A spa Buck3 1 8 V up to 2 A The evaluation module is desig...

Page 3: ...22uF C6 GND GND 0 R2 1 2 3 J9 MODE GND V7V DNI C32 DNI C34 DNI C33 MODE PG_DLY PG_DLY 4 7 8 1 2 3 5 6 DNI Q1 DNI L4 DNI L5 DNI L6 DNI C30 DNI C31 GND GND PGOOD VOUT1 VOUT2 VOUT1 VOUT2 SYNC SYNC DNI J4...

Page 4: ...CB layout Figure 3 1 Component Placement Top Layer Figure 3 2 Board Layout Top Layer Board Layout www ti com 4 TPS65265 Buck Converter Evaluation Module User s Guide SLVUAK9A DECEMBER 2015 REVISED MAY...

Page 5: ...ayer Figure 3 4 Board Layout Third Layer www ti com Board Layout SLVUAK9A DECEMBER 2015 REVISED MAY 2021 Submit Document Feedback TPS65265 Buck Converter Evaluation Module User s Guide 5 Copyright 202...

Page 6: ...rd Layout Bottom Layer Board Layout www ti com 6 TPS65265 Buck Converter Evaluation Module User s Guide SLVUAK9A DECEMBER 2015 REVISED MAY 2021 Submit Document Feedback Copyright 2021 Texas Instrument...

Page 7: ...1 J2 Buck2 Connector Output of Buck2 J3 Buck3 Connector Output of Buck3 J5 VIN Connector Apply power supply to this connector Table 4 2 Jumpers Function Placement Comment J6 Buck1 enable EN1 Connect E...

Page 8: ...control pin spa Connect MODE pin to GND or HIGH set the power sequence with pre defined power up and power down sequence spa Leave open to set power up and down with dedicated enable pin Bench Test S...

Page 9: ...to the output connectors Table 5 1 Power Sequencing Mode EN1 EN2 EN3 Start Sequencing Shutdown Sequencing Low High High Used to start stop bucks in sequence buck1 buck2 buck3 Buck3 buck2 buck1 Low Lo...

Page 10: ...0603 Generic RES 100k OHM 1 10W 1 0603 SMD 19 0 6 R2 R3 R4 R5 R6 R7 0603 Generic RES 0k OHM 1 10W 1 0603 SMD 20 20K 3 R1 R11 R12 0603 Generic RES 20k OHM 1 10W 1 0603 SMD 21 4 7uH 3 L1 L2 L3 IND_74431...

Page 11: ...ther than TI b the nonconformity resulted from User s design specifications or instructions for such EVMs or improper system design or c User has not paid on time Testing and other quality control tec...

Page 12: ...These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not in...

Page 13: ...instructions set forth by Radio Law of Japan which includes but is not limited to the instructions below with respect to EVMs which for the avoidance of doubt are stated strictly for convenience and s...

Page 14: ...any interfaces electronic and or mechanical between the EVM and any human body are designed with suitable isolation and means to safely limit accessible leakage currents to minimize the risk of electr...

Page 15: ...R DAMAGES ARE CLAIMED THE EXISTENCE OF MORE THAN ONE CLAIM SHALL NOT ENLARGE OR EXTEND THIS LIMIT 9 Return Policy Except as otherwise provided TI does not offer any refunds returns or exchanges Furthe...

Page 16: ...are subject to change without notice TI grants you permission to use these resources only for development of an application that uses the TI products described in the resource Other reproduction and...

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