Limiting DS Port VBUS current to 2.2A per port.

PWRCTRL1_BATEN1

PWRCTRL2_BATEN2

ILIM1

DN1_VBUS

DN2_VBUS

BOARD_3P3V

BOARD_5V

BOARD_3P3V

PWRCTRL2_BATEN2

DN2_VBUS

DN1_VBUS

PWRCTRL1_BATEN1

OVERCUR2Z

OVERCUR1Z

C42

0.1uF

R19

10K

0402

5%

+

C44

150uF

U2

TPS2561

GND

1

IN

2

IN

3

EN1

4

EN2

5

FAULT2Z

6

ILIM

7

OUT2

8

OUT1

9

FAULT1Z

10

PAD

11

C43

0.1uF

R21

25.5K

0402

5%

+

C46

150uF

C45

0.1uF

R20

10K

0402

5%

Limiting DS Port VBUS current to 2.2A per port.

ILIM2

DN3_VBUS

DN4_VBUS

BOARD_3P3V

BOARD_5V

BOARD_3P3V

PWRCTRL4_BATEN4

DN4_VBUS

DN3_VBUS

PWRCTRL3_BATEN3

OVERCUR4Z

OVERCUR3Z

+

C49

150uF

U3

TPS2561

GND

1

IN

2

IN

3

EN1

4

EN2

5

FAULT2Z

6

ILIM

7

OUT2

8

OUT1

9

FAULT1Z

10

PAD

11

C48

0.1uF

R24

25.5K

0402

5%

C50

0.1uF

+

C51

150uF

R23

10K

0402

5%

C47

0.1uF

R22

10K

0402

5%

TUSB4041I

www.ti.com

SLLSEK3B – JULY 2015 – REVISED DECEMBER 2015

9.2.2.6 VBUS Power Switch Implementation

Figure 31. VBUS Power Switch Implementation

This particular example uses TI's TPS2561 dual-channel precision adjustable current-limited power switch. For

details on this power switch or other power switches available from TI, refer to www.ti.com.

Copyright © 2015, Texas Instruments Incorporated

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