AN10436 PHILIPS [NXP Semiconductors], AN10436 Datasheet - Page 9

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

NXP Semiconductors
2. Functional IC description
AN10436_1
Application note
Fig 6. Simplified BTL application TDA8932B/33(B) (symmetrical supply)
GND
VDD
VSS
(1) The TDA8933T device requires a 1 MΩ resistor in parallel with the bootstrap capacitor Cbo. TDA8932BT, TDA8932BTW
+
and TDA8933BTW devices do not require a 1 MΩ resistor.
1 F
Cin
1 F
Cin
2.1 Control inputs
VSSA
Rvdda
Rvssa
10
10
SLEEP
control
control
MUTE
This chapter briefly describes the main functionality of the TDA8932B/33(B) device and
the different modes. It also describes the different features and the protections
implemented in the TDA8932B/33(B).
pin.
The TDA8932B/33(B) is controlled by two inputs, POWERUP (pin 6) and
ENGAGE (pin 5). The POWERUP is a two-level high impedance input. The ENGAGE
input has an internal pull-up current source and an internal pull-down resistor of
100 kΩ (typical). The internal pull-up current source is enabled after the power stages are
100 nF
39 k
Cosc
Rosc
Cvdda
100 nF
Cvssa
100 nF
Cen
470 nF
Cinref
100 nF
VDDA
VSSA
VSSA
VSSA
VDDA
VSSA
VSSA
POWERUP
V
V
ENGAGE
Cvddp
220 F
(25 V)
Cvssp
220 F
(25 V)
OSCREF
HVPREF
SSD(HW)
SSD(HW)
Rev. 01 — 12 December 2007
INREF
VDD
VSS
CGND
TEST
DIAG
V
V
IN1P
IN1N
IN2N
IN2P
DDA
SSA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
TDA8932B/
33(B)
U1
Table 3
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
V
OSCIO
HVP1
V
BOOT1
OUT1
V
STAB1
STAB2
V
OUT2
BOOT2
V
HVP2
DREF
V
SSD(HW)
DDP1
SSP1
SSP2
DDP2
SSD(HW)
in
TDA8932B/33(B) Class-D audio amplifier
Section 2.8
Cbo
15 nF
Cbo
15 nF
Cdref
100 nF
Cstab
100 nF
(1)
(1)
VSSA
VSSA
VSS
VSS
in gives a description of each
Cvddp
100 nF
Cvddp
100 nF
VDD
VDD
VSS
VSS
Cvssp
100 nF
Csn
470 pF
Rsn
10
Rsn
10
Csn
470 pF
Cvssp
100 nF
AN10436
Llc
Llc
© NXP B.V. 2007. All rights reserved.
Clc
Clc
010aaa421
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