Class D Audio Amplifier - Philips LC4.3E Service Manual

Circuit Diagrams and PWB Layouts

Class D Audio Amplifier

1 2 3
CLASS D AUDIO AMPLIFIER
C
POWER LINE FILTER
A
5001
F001 F007
1003
3
2
2002 2003
2001
1 100n 100n
220u
35V
B3B-PH-K
F002
B
PGND PGND PGND PGND
5004
AUDIO-L
2u2
EMC
2008
100p
1002 PGND
F003
1
C
F004
5002
2
AUDIO-R
F005
3
2u2 EMC
4
5003
5
2051 2006 2007
2u2
6
EMC 100p 100p 100p
7
RES
F006
8
CGND PGND PGND
PGND
9
CGND PGND
5005
SOUND-ENABLE
D
2u2 EMC
2027
100n
PGND
E
F
G
H
3139 123 5970.1
1 2 3
LC4.3E AA
4 5
HVPI-L
2015
HVPI-L 3n9
VP
3001
F008 2012
3007 2016
VP_SGN
220u 2n2
47K
10R 35V
2048
2004
100n 220u
CGND
35V
PGND PGND
2062
2064 RES
I001 I003
3004 2013 3008
I002
1K0 2K2
220n
3013
2009 VP_SGN
10K
100p
PGND 3003 CGND
22K
I004
3039
6001
2011
100n 10K
3038
PGND 2047
68K
6002
1u0
PGND RES
BAT54 COL
I025
PGND PGND
SD2 ONLY
3046
I008
4003 1K0
I009
2028
SD1 ONLY
3044
HVPI-R
100n 33K
RES
I010
PGND 3045 7005
BC847BW 2031
3n9
RES
10K RES
PGND
HVPI-R
I019
4001
2063
RES
VP
2029
2032
3024
220u
47K 2n2
35V
3034 CGND
3K9
2065 RES
2039
2041 3020 2033 3025
10u
I041
2K2
3028 10u 1K0 220n
I042
10K
1 3
I040
3019
4
7004
3033
TL431ACDBV
10K I043
10K
6003
2 5
BAT54 COL
3021
4K7
I026
CGND
I022
3047
CGND
1K0
PHASE INVERTER (UNITY GAIN)
4 5
7. EN 93
6 7 8
2014
VP
3n9
3006
1K0
I027
2020
220p
3005
0R
3037 3010 I011
I028
3K9 1K2
3012 2021
10R
220p
VP_SGN VP
2017
I029 3009
PGND
220K
47n 100n PGND
7000
5006
I013
TDA8931 5 18
Φ
VDDA VDDP
33u / 2.7A
POWER 2018
3011
COMPARATOR 15n
3 16 2K2
IN- OUT
I005 4
IN+
17 I014 2019 2u2
I030
BOOT
50V
I006 6 14 I015
POWERUP STABI
3042 10K
8 I031
DIAG
I007
7 13
G HVP
I012
HVPI-L
PGND 12 19
OVP HVPI
2026
2010
VSSD 220n
CGND VSSA VSSP 100n
9 2 15 1 10 1120
PGND PGND
PGND
PGND PGND
2030
3n9 VP
3023
1K0
2035
220p
3022
22R
3032
3026 I035
I033
3K9 1K2
VP_SGN 3030 2036
VP
10R 220p
I034 3027 2034
47n 220K 100n PGND
PGND
7001
18 TDA8931
5
5007
Φ
VDDA VDDP I023
33u / 2.7A
POWER
3029
COMPARATOR 2K2
2038
3 16
I020 IN- OUT
15n
4
IN+
I024
17 2037
2u2 I036
BOOT
50V
6 14 I037
POWERUP STABI
I038 3043 10K
8
DIAG
7 13
G HVP
I016
HVPI-R
12 19
OVP HVPI
2044 2040
VSSD
100n 220n
CGND VSSA VSSP
9 2
15 1 10 11 20
PGND
PGND
PGND PGND PGND PGND
6 7 8
9 10 11
2022 2023
3040
470n
220n
10K
I017
3014 2024
22R 1m0
25V
PGND
1001
1
L- F009
2
L+ F010
R- F011 3
4
R+ F012
2052 2053 2054 2055
*Connection Inverted (R_CH)
2n2 2n2 2n2 2n2
PGND PGND PGND PGND
3041
2045
10K
RESERVED
220n
2042
2060
470n
I021 (Mounting Hole)
2n2
PGND
3031 2043
2061
22R 1m0
(Mounting Hole)
25V
2n2
PGND
PGND
9 10 11
12
1001 E11 5001 A3
1002 C2 5002 C3
1003 A2 5003 C2
C
2001 B2 5004 B3
2002 B3 5005 D3
2003 B3 5006 C8
2004 B4 5007 F8
2006 C3 6001 C4
2007 C3 6002 C6
A
2008 C3 6003 G6
2009 C3 7000 C6
2010 C8 7001 F7
2011 C4 7004 F4
2012 A5 7005 D4
2013 B5 F001 A2
2014 A7 F002 B2
2015 A6 F003 C2
2016 A6 F004 C2
2017 B7 F005 C2
2018 C8 F006 C2
2019 C8 F007 A3
B
2020 A8 F008 A3
2021 B8 F009 E11
2022 C9 F010 E11
2023 C9 F011 E11
2024 C9 F012 E11
2026 C8 I001 B3
2027 D3 I002 B5
2028 D3 I003 B5
2029 F5 I004 C3
2030 D7 I005 C6
2031 E6 I006 C6
2032 F5 I007 C6
C
2033 F5 I008 D3
2034 E7 I009 D4
2035 E8 I010 D4
2036 E8 I011 B8
2037 F8 I012 C7
2038 F8 I013 C7
2039 F3 I014 C7
2040 G8 I015 C7
2041 F4 I016 F7
2042 F9 I017 C9
2043 F9 I019 E4
D
2044 G8 I020 F6
2045 F9 I021 F9
2047 C5 I022 G4
2048 B4 I023 F8
2051 C3 I024 F7
2052 E10 I025 D6
2053 E10 I026 G6
2054 E10 IXXX F3
2055 E11 IXXX F4
- L
2060 F11 IXXX F4
+
2061 F11 IXXX F5
-
2062 B6 IXXX B6
R
+
E
2063 E6 IXXX B6
2064 B4 IXXX E6
2065 F5 IXXX E6
3001 A3 IXXX A7
3003 C4 IXXX C7
3004 B4 IXXX F7
3005 B7 IXXX F7
3006 A6 IXXX C8
3007 B5 IXXX E8
3008 B5 IXXX F8
3009 B6
3010 B8
F
3011 C8
3012 B8
3013 C5
3014 C9
3019 F3
3020 F5
3021 G3
3022 E7
3023 E6
3024 F5
3025 F5
G
3026 E8
3027 E6
3028 F4
3029 F8
3030 E8
3031 F9
3032 E6
3033 F5
3034 F4
3037 B6
3038 C5
3039 C5
H
3040 C9
3041 F9
3042 C8
3043 F8
3044 D4
3045 D4
3046 D6
3047 G6
F_15390_021.eps
4001 E4
270205
4003 D4
12