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OUT1

VSSP1

VDDP2

DRIVER

HIGH

MGU999

OUT2

BOOT2

TDA8922J

BOOT1

DRIVER

LOW

RELEASE1

SWITCH1

ENABLE1

CONTROL

AND

HANDSHAKE

PWM

MODULATOR

RFB

RFB

MANAGER

OSCILLATOR

TEMPERATURE SENSOR

CURRENT PROTECTION

STABI

MODE

ROSC

VSSA

Vmode

COSC

INPUT

STAGE

mute

3

2

IN1

−

IN1

+

15

14

13

11

10

9

VSSP2

VSSP1

DRIVER

HIGH

DRIVER

LOW

RELEASE2

SWITCH2

ENABLE2

CONTROL

AND

HANDSHAKE

PWM

MODULATOR

5

SGND1

1

OSC

19

SGND2

SGND

SGND

23

MODE

INPUT

STAGE

mute

22

21

IN2

−

IN2

+

Vin2

Vin1

17

VSSD

VSSA

VSSP

0 V

VSSA

−25 V

VDDP

VDDA

+25 V

18

VSSA2

VSSA

6

VSSA1

20

VDDA2

VDDA

4

VDDA1

16

7

12

8

VDDP2

PROT

STABI

VDDP1

SGND

Fig.38 Typical SE application schematic of TDA8922J.