TDA8928J Datasheet, PDF (13/23 Pages) NXP Semiconductors – Power stage 2 x 10 or 1 x 20 W class-D audio amplifie

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CON1
supply
1 ^{+14.5 V}
2
3
−14.5 V
C1
100 nF
C2
100 nF
L1
C3 ^bead
470 µF
(35 V)
C4
470 µF
(35 V) _L2
bead
V_DDP
V_SSP
C39 R32
2.2 nF 100 Ω
R3
1 kΩ
C19
2.2 nF
C20
R1
10 kΩ
V_DDP
R33
3.9
R9
kΩ
1 kΩ
C14
22 µF (100 V)
2
8
U2A
LM393
1
C16
100 nF
STAB (U1,9)
R11
2 kΩ
2 ^J1 1
C5
470 µF
(35 V)
C10
220 nF
R26
0Ω
C7
22 µF
(100 V) _C8
V_DDP
V_SSP
C9
220 nF
V_DDP
C28
560 pF
R19
5.6 Ω
C29
560 pF
V_SSP
L3
33 µH
C34
220 nF
C12
LS1
15 nF
8Ω
2.2 nF
34
C17
R5
1 _{100 nF}
220 kΩ
C40 R7
J3
2
C15
V_DDP
R13
15 kΩ
In1 47 nF 3.9 kΩ _R10
0Ω
In2
R8 C41 ^R28
0Ω
3.9 kΩ 47 nF
R29
R6
0Ω
22 µF
(100 V)
S1
power-ON
R14 _DZ1
15 kΩ _{36 V}
R25
2 kΩ
Q1
BC848
R16
R15
10 kΩ 2 ^J2 1
V_SSP
V_SSP
220 nF
SW1 ₁
REL1 ₂
POWERUP ₁₅
R24
DIAG ₃
0Ω
EN1 ₄
EN2 ₁₄
REL2 ₁₆
SW2 ₁₇
V_DD1
5
V_DD2
13 ₇ ^OUT1
U1
TDA8928J
6 ^BOOT1
STAB
9
C24
1 µF
C28
100 nF
12 ^BOOT2
C25
8
10 ^{11 OUT2}
1 µF
R22
22 Ω
C32
470 nF
R30
39 kΩ
C27
22 µF (100 V)
R31
39 kΩ
V_DDP
V_SSP
V_DDP
220 kΩ
C21
2.2 nF
C22
2.2 nF
R4
1 kΩ
C42 R35
2.2 nF 150 Ω
V_SSP
U2B
5 LM393
7
C38
100 nF
6
R34
3.9 kΩ
R2
10 kΩ
1 kΩ
DZ2
Q2
3.3 V
BC856
R17
5.6 kΩ
R12
2 kΩ
STAB (U1,9)
C37
220 pF
V_SSP
C6
470 µF
(35 V)
V_SS1
V_SS2
V_SSP
C11
220 nF
L4
33 µH
C35
220 nF
C13
LS2
15 nF
8Ω
R21
5.6 Ω
R23
22 Ω
C33
470 nF
V_DDP
C30
560 pF
C31
560 pF
V_SSP
mgx380
Fig.5 Single-ended self oscillating class-D system application diagram for TDA8928J.