Philips AX2300 - IC Block Diagram

4-2
33
34
22
21
20
19
18
17
16
15
14
13
12
35
36
37
38
39
40
41
42
43
44
1 2 3 4 5 6 7 8 9 10 11
32 31 30 29 28 27 26 25 24 23
AMUTE
EMP
HVcc
PSW
CLK
START
OFF
CHGVcc
SEL
PREGND
PWMFIL
IN1
MUTE2
IN2
MUTE34
IN4
IN3
Vref
VSYS2
OP+
OP
OUT
VSYS1
RCHG OUTIR OUT1F OUT2R OUT2F POWGND OUT3F OUT3R OUT4F OUT4R BRAKE1
BSEN BATT RESET DEAD SW EO EI SPRT CT N.C. OP -
V
I
/
V
I
/
V
I
/
V
I
/
BRAKE1
BTL
BTL
BTL
BTL
POWER
OFF
STARTER
MAXIMUM
DETECTION
CLK
TSD
TRIANGLE WAVE
OVER-VOLTAGE
PRE
- DRIVER POWER SUPPLY
TSD
POWER UNIT
POWER SUPPLY
CONTROL CIRCUIT
POWER SUPPLY
MUTE2
MUTE34
IC BLOCK DIAGRAM
U1: MM1538XQ