Sony STR-DA2800ES - Page 134

STR-DA2800ES
134
IC3903, 3904 ISL8023A
5
9
FB
11
PGND
12
PGND
PWM/PFM
LOGIC
CONTROLLER
PROTECTION
HS DRIVER
OSCILLATOR
SHUTDOWN
SHUTDOWN
SHUTDOWN
CSA
OCP
BANDGAP
–
+
ZERO-CROSS
SENSING
LS
DRIVER
SLOPE
COMP
ISET
THRESHOLD
SOFT
START
1 ms
DELAY
NEG CURRENT
SENSING
+
–
+
–
SKIP
+
–
SCP
UV
OV
0.5 V
0.85 V
VREF
0.6 V
–
+
COMP
+
–
+
+
EAMP
+
–
–
+
1
VIN
2
VDD
3
PG
4
SYNC
EN
6
FS
8
COMP
7
SS
PHASE
13
PHASE
14
PHASE
15
VIN
16
10
SGND
– ACDC Board –
IC921 STR-Y6763
D/ST 1
S/OCP
2
VCC
3
GND 4
BD
6
FB/OLP 5
STARTUP
LOGIC
DRIVER
LATCH
OVERCURRENT
PROTECTION/
BOTTOM-SKIP
UNDER VOLTAGE
LOCK OUT/
REGULATOR/
CONSTANT CURRENT
FEEDBACK/
STANDBY
OVERLOAD
PROTECTION
BOTTOM
DETECTION
NF 7
OSCILLAOTR