AN10436 PHILIPS [NXP Semiconductors], AN10436 Datasheet - Page 38

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

NXP Semiconductors
AN10436_1
Application note
Fig 35. Schematic - version 3.00
IN1
IN2
MUTE
(1) The TDA8933T device requires a 1 MΩ in parallel with the bootstrap capacitor Cbo.
J2
J5
2
1
S2
10 k
OPERATING
R4
V
P
= 10V ...35V
C11
470 nF
C20
47 F
4.7 k
4.7 k
4.7 k
4.7 k
V
R14
R15
R2
R3
3.10 Schematic - revision 3.00
100nF
PA
C16
39 k
SLEEP
R10
GND
470 nF
47 k
470 nF
470 nF
C21
100 nF
C27
C5
R6
C29
ON
J1
Remark: For thermal reliability and/or quality requirements on set level, an average music
power of ¼ P
not driven continuously at the rated output power. Taking this into account, shows the
major benefit of Class-D as compared to Class-AB. Class-D dissipates less at ¼ P
and that makes it possible to comply easily with the thermal reliability and/or quality
regulations with a cheap SO32 or HTSSOP32 package without a heat sink.
1
2
1
2
S1
V
PA
C6
330 pF
C22
100 nF
C28
330 pF
R7
12 k
C2
220 F/35 V
11
10
12
13
14
15
16
1
2
3
4
5
6
7
8
9
rated
10
BEAD
V
IN1P
IN1N
DIAG
ENGAGE
POWERUP
CGND
V
V
OSCREF
HVPREF
INREF
TEST
IN2N
IN2P
V
R1
L1
SSD/HW
DDA
SSA
SSD/HW
is assumed. This assumption can be made because audio amplifiers are
TDA8932BT
Rev. 01 — 12 December 2007
C3
100 nF
/33T
U1
V
PA
V
V
SSD/HW
SSD/HW
BOOT1
BOOT2
OSCIO
STAB1
STAB2
V
V
V
V
OUT1
OUT2
HVP1
HVP2
C1
220 F/35 V
DDP1
DDP2
SSP1
SSP2
V
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
P
C10
15 nF (1)
C18
15 nF (1)
C30
100 nF
C17
100 nF
C8
100 nF
C25
100 nF
VP
TDA8932B/33(B) Class-D audio amplifier
V
P
10
R5
10
R12
C9
470 pF
C26
470 pF
C31
100 nF
C4
100 nF
22 H
22 H
L3
L2
HVP2
HVP1
22
R8
22
R13
C12
100 nF
C19
100 nF
C14
680 nF
C23
680 nF
AN10436
C15
1000 F, 25 V
C24
1000 F, 25 V
© NXP B.V. 2007. All rights reserved.
1
2
J3
1
2
J4
OUT1
OUT2
HVP1
HVP2
010aaa062
rated
38 of 55
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4