AN10436 PHILIPS [NXP Semiconductors], AN10436 Datasheet - Page 4

• Manufacturer Part Number: AN10436
• Description: TDA8932B/33(B) Class-D audio amplifier
• Manufacturer: PHILIPS [NXP Semiconductors]

NXP Semiconductors
AN10436_1
Application note
Fig 1. Block diagram
POWERUP
ENGAGE
INREF
CGND
TEST
DIAG
IN1N
IN2N
IN1P
IN2P
2
3
12
15
14
4
7
6
5
13
1.1 Block diagram
1.2 Fixed frequency pulse width modulated Class-D concept
The TDA8932B/33(B) device is a closed loop fixed frequency pulse width modulated
Class-D amplifier with two differential analog inputs, each driving an independent power
stage (see
N-channel MOSFET.
OSCREF
OSCILLATOR
10
V
OVP, OCP, OTP,
PROTECTIONS:
SSD
UVP, TF, WP
V
OSCIO
SSA
MODE
Figure
31
9
TDA8932B
2). The power stage consists out of a low side and a high side
MODULATOR
MODULATOR
V
SSD(HW)
Rev. 01 — 12 December 2007
PWM
PWM
1, 16, 17, 32
MANAGER
CTRL
CTRL
V
DDA
8
HALF SUPPLY VOLTAGE
TDA8932B/33(B) Class-D audio amplifier
V
V
DDA
SSA
DRIVER
DRIVER
DRIVER
DRIVER
STABILIZER 11 V
STABILIZER 11 V
REGULATOR 5 V
HIGH
HIGH
LOW
LOW
V
V
DDA
DDA
V
SSD
V
V
SSP1
SSP2
001aaf597
AN10436
© NXP B.V. 2007. All rights reserved.
28
29
27
26
21
20
22
23
25
24
18
11
30
19
BOOT1
V
OUT1
V
BOOT2
V
OUT2
V
STAB1
STAB2
DREF
HVPREF
HVP1
HVP2
DDP1
SSP1
DDP2
SSP2
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