TDA8927 View Datasheet(PDF) - Philips Electronics

Part Name

Description

Manufacturer

TDA8927

Power stage 2×80 W class-D audio amplifier

Philips Electronics 

Philips Semiconductors

Power stage 2 × 80 W class-D

audio amplifier

Objective specification

TDA8927

8.3 BTL operation

BTL operation can be achieved by driving the audio input

channels of the controller in the opposite phase and by

connecting the loudspeaker with a BTL output filter

between the two PWM output pins of the power stage

(see Fig.6).

In this way the system operates as a mono BTL amplifier

and with the same loudspeaker impedance a four times

higher output power can be obtained.

For more information see Chapter 15.

handbook, full pagewidth

VDD2 VDD1

TDA8927J

13 5

6

BOOT1

EN1

SW1

REL1

STAB

DIAG

POWERUP

EN2

SW2

REL2

4

1

CONTROL

AND

2

HANDSHAKE

9

DRIVER

HIGH

DRIVER

LOW

temp

3

TEMPERATURE SENSOR

current

AND

CURRENT PROTECTION

15

7 OUT1

VSS1

VDD2

12

SGND

(0 V)

BOOT2

14

17

CONTROL

AND

16

HANDSHAKE

DRIVER

HIGH

DRIVER

LOW

11 OUT2

8

10

VSS1 VSS2

MGU386

Fig.6 Mono BTL application.

2001 Dec 11

10

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