1

2

3

4

5

6

7

8

9

10

28

27

26

25

24

23

22

21

20

19

SD

FAULT

GND

GND

GAIN0

GAIN1

AVCC

AGND

GVDD

PLIMIT

PVCC

PVCC

BSN

OUTN

PGND

OUTN

BSN

BSP

OUTP

PGND

INN

INP

NC

11

12

13

14

18

17

16

15

OUTP

BSP

PVCC

PVCC

AVCC

TPA3111D1-Q1

www.ti.com

SLOS759D – MARCH 2012 – REVISED AUGUST 2015

5 Pin Configuration and Functions

PWP Package

28-Pin HSSOP With Thermal Pad

Top View

Pin Functions

PIN

TYPE

DESCRIPTION

NAME

NO.

AGND

8

—

Analog supply ground, connect to the thermal pad.

AVCC

7

P

Analog supply

AVCC

14

P

Connect AVCC supply to this pin

BSN

22, 26

I

Bootstrap I/O for negative high-side FET

BSP

17, 21

I

Bootstrap I/O for positive high-side FET

Open drain output used to display short circuit or DC detect fault status. Voltage compliant to AVCC. Short

FAULT

2

O

circuit faults can be set to auto-recovery by connecting FAULT pin to SD pin. Otherwise both short circuit

faults and DC detect faults must be reset by cycling PVCC.

GAIN0

5

I

Gain select least significant bit. TTL logic levels with compliance to AVCC.

GAIN1

6

I

Gain select most significant bit. TTL logic levels with compliance to AVCC.

GND

3, 4

—

Connect to local ground

High-side FET gate drive supply, nominal voltage is 7 V. May also be used as supply for PLIMIT divider.

GVDD

9

O

Add a 1-

μF capacitor to ground at this pin.

INN

11

I

Negative audio input, biased at 3 V.

INP

12

I

Positive audio input, biased at 3 V.

NC

13

—

Not connected

OUTN

23, 25

O

Class-D H-bridge negative output

OUTP

18, 20

O

Class-D H-bridge positive output

PGND

19, 24

—

Power ground for the H-bridges

Power limit level adjust. Connect directly to GVDD pin for no power limiting. Add a 1-

μF capacitor to

PLIMIT

10

I

ground at this pin.

15, 16,

PVCC

P

Power supply for H-bridge. PVCC pins are also connected internally.

27, 28

Shutdown logic input for audio amp(LOW = outputs Hi-Z, HIGH = outputs enabled). TTL logic levels with

SD

1

I

compliance to AVCC.

Copyright © 2012–2015, Texas Instruments Incorporated

Submit Documentation Feedback

3

Product Folder Links: TPA3111D1-Q1