Panasonic SA-AKX30PH - Power Amplifier Block Diagram

76
15.4. Power Amplifier
SA-AKX30PH/PN POWER AMPLIFIER BLOCK DIAGRAM
D5902 D5901
POWER AMPLIFIER
C1BA00000497
IC5900
121
CN5902CN2012
OUT1
10
BOOT1
VDDP1
VSSP1
VSSP2 VDDP2
9
8
13
11
16
VDDA1 VDDA2
VSSA1 VSSA2
4
6
20
18
VSSD
17
2
IN1+
1
OSC
INPUT
STAGE
PWM
MODULATOR
RELEASE1
ENABLE1
ENABLE2
SWITCH1
MUTE
DRIVER
HIGH
DRIVER
LOW
CONTROL
&
HANDSHAKE
OUT2
14
BOOT2
15
PROT
7
21
IN2-
FL IN
85
CN5902CN2012
MUTE F
310
CN5902CN2012
MOD DA
49
CN5902CN2012
1
CN2010
2
CN2010
DC DET
58
CN5902CN2012
FANFAN
-
+
103
CN5902CN2012
FR IN
INPUT
STAGE
23
MODE
MODE
12
STABI
STABI
PWM
MODULATOR
OSCILLATOR MANAGER
TEMP. SENSOR
CURRENT PROTECTION
VOLT. PROTECTION
RELEASE2
SWITCH2
MUTE
DRIVER
HIGH
DRIVER
LOW
CONTROL
&
HANDSHAKE
-30V
5V
5V
30V
-30V
-30V
-30V
30V -30V
-30V 30V
Q5906,Q5907
DC DETECT
Q5902,Q5903,Q5905
Q2027,Q2029
Q2033,Q2034,Q2035
MUTING
CIRCUIT
QR5900,QR5901
INVERTER
Q5901
SWITCH
TH5900
+
-
3
JK5901
4
JK5901
+
-
FRONT (RIGHT)
FRONT (LEFT)
1
JK5901
2
JK5901
: AUDIO OUTPUT SIGNAL LINE
76
CN5902CN2012
FHOP1
FROM AUDIO
FROM/TO
SERVO/SYSTEM CONTROL
D-AMP P.C.B.
MAIN P.C.B.
MUTE F
MOD DA
F HOP
DC DET AMP
FAN
FAN
CIRCUIT