Philips TDA8928J 2004 May 05 13, Fig.5 Single-ended self oscillating class-D system application diagram for TDA8928J.

2004 May 05 13 Philips Semiconductors Preliminary specification
Power stage 2 x 10 or 1 x 20 W class-D audio amplifier TDA8928J
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mgx380
C24
1 µF
C25
1 µF
C10
220 nF
C8 C9
220 nF
22 µF
(100 V)
R26
0 Ω
220 nF
C34
220 nF
C32
470 nF
C12
15 nF LS1
8 Ω
LS2
8 Ω
R22
22 Ω
C28
100 nF
C27
22 µF (100 V)
R19
5.6 Ω
C28
560 pF
C29
560 pF
C30
560 pF
C31
560 pF
VSSP
R30
39 kΩ
L3
33 µH
L4
33 µH
U1
TDA8928J
R31
39 kΩ
17
6
9
12
11
513
810
2
15
3
4
14
16
17
VSSP
VDDP
VDDP
VDDP
VDDP
C35
220 nF
C33
470 nF
C13
15 nF
R23
22 Ω
R21
5.6 Ω
C11
220 nF
C38
100 nF
S1
power-ON
C37
220 pF
STAB (U1,9)
STAB (U1,9)
DZ2
3.3 V
DZ1
36 V
R24
R16
1 kΩ
R10
0 Ω
C17
C15
100 nF
22 µF
(100 V)
C14
22 µF (100 V)
C16
100 nF
R28
0 Ω
R29
0 Ω
R4
1 kΩ
R35
R34
3.9 kΩ
R2
10 kΩ
150 Ω
R8
3.9 kΩ
R6
220 kΩ
C22
2.2 nF
C42
2.2 nF
R32
100 Ω
C39
2.2 nF
C41
47 nF
R7
3.9 kΩ
C40
47 nFIn1
In2
C21
2.2 nF
R13
15 kΩ
R9
1 kΩ
R33
3.9
kΩ
R1
10 kΩ
R14
15 kΩ
R25
2 kΩ
R15
10 kΩ
R17
5.6 kΩ
R12
2 kΩ
R11
2 kΩ
Q2
BC856
Q1
BC848
0 Ω
C6
470 µF
(35 V)
VSSP
VSSP
C7
470 µF
(35 V)
C5
VDD1 VDD2
VSS1 VSS2
VSSP
VSSP
VDDP
VDDP
VDDP
U2A
LM393
1
28
4
3
U2B
LM393
7
5
6
VSSP
VSSP
VSSP
J1
21
J32
1
J2
21
SW1 OUT1
BOOT1
STAB
BOOT2
OUT2
REL1
POWERUP
DIAG
EN1
EN2
REL2
SW2
R5
220 kΩ
R3
1 kΩ
C20
2.2 nF
C19
2.2 nF
C1
100 nF
+14.5 V
−14.5 V
CON1
supply
1
2
3C2
100 nF
C3
470 µF
(35 V)
L1
bead
bead
L2
VDDP
VSSP
C4
470 µF
(35 V)
Fig.5 Single-ended self oscillating class-D system application diagram for TDA8928J.