Ic Block Diagram - Yamaha Stagepas 300 Service Manual

IC BLOCK DIAGRAM

M65850FP (AAX62760)
Digital Echo
FILTER: IC602
NC
1 16
LPF1 IN 2
15
LPF1 OUT
3
14
OP1 OUT 4
13
OP1 IN
5 12
CC1
6 11
7
CC2 7 8
10
GND
8 9
LB1407-E LF (AAX68710)
AC/DC Voltage Level Meter
VR: IC604
1
Vcc 14
2 13
Rch
3
Vref 12
IN +
4
11
IN --
5 10
OUT 6
9
GND
7 7 8
8
NJM2068M-D TE1 (AAX62750)
Dual Operational Amplifier
FILTER: IC103, 107, 204, 603
INPUT: IC101, 201, 501, 701
VR: IC102, 105, 106, 202, 203, 302,
402, 502, 503, 702, 703
+DC Voltage
Output A
1 +V 8
Supply
Inverting
Output B
2 7
Input A
- +
Inverting
Non-Inverting
3 6
+ -
Input B
Input A
Non-Inverting
-DC Voltage Supply
4 -V 5
Input B
（ICブロック図）
CLOCK
14
NC
OSCILLATOR
REF 13
Vcc
1/2 Vcc
CLOCK
REF
16
NC
AUTO
OP2 IN
RESET
OP2 OUT
NC 1
LPF2 IN
LPF1
LPF2 OUT
2 3
LPF1 IN LPF1 OUT
Vref Vcc Rch
3 1
D7
D6
D5
D4
IN +
4
D3
IN --
5
D2
D1
6 7
OUT
GND
TOP249Y (AAX63650)
Switching Controller
POWER: IC802,804
1
3
5
7
2
4
1: CONTROL
2: LINE-SENSE
3: EXTERNAL
CURRENT LIMIT
4: SOURCE
5: FREQUENCY
7: DRAIN
CC2 OP2 IN OP2 OUT LPF2 IN
7 12 11 10
LPF2
D / A
DO1
CLOCK
MO
MAIN CONTROL
RESET
20Kbit
MI
D1 DO0
SRAM
A / D
4 5 6 8
OP1 OUT OP1 IN CC1 GND
12, 11, 10, 9
D7 D6
2 14 13
R7 R6
5.83 kΩ 4.12 kΩ
-- -- --
COM COM COM
7 6 1
+ +
+
V C
CONTROL (C) 1
Z C
SHUNT REGULATOR/
ERROR AMPLIFIER
5.8 V
–
4.8 V
+
5.8 V
I FB
V I (LIMIT)
CURRENT
SOFT
LIMIT
START
ADJUST
ON/OFF
V BG +V T
EXTERNAL
3
CURRENT LIMIT (X)
STOP LOGIC
LINE-SENSE (L) 2
1 V
V BG
OV/UV
LINE
DC MAX
SENSE
FREQUENCY (F) 5
OSCILLATOR WITH JITTER
R E
STAGEPAS 300
LPF2 OUT
9
15
Vcc
D1
8
R1
1 kΩ
0
INTERNAL
1 SUPPLY
+
SOFT START
–
INTERNAL UV
COMPARATOR
÷ 8
SHUTDOWN/
AUTO-RESTART
HYSTERETIC
THERMAL
SHUTDOWN
STOP SOFT-
START
D MAX
DC MAX
CLOCK
HALF
S Q
SAW –
FREQ.
R
+
PWM
COMPARATOR
LIGHT LOAD
FREQUENCY
REDUCTION
7 DRAIN (D)
–
+
CURRENT LIMIT
COMPARATOR
CONTROLLED
TURN-ON
GATE DRIVER
LEADING
EDGE
BLANKING
4 SOURCE (S)
15