Sony STR-DA2800ES - Page 132

STR-DA2800ES
132
– DCDC Board –
IC1402, 1404 – 1406 TPS54331GDR
EN
3
VIN
2
BOOT
1
7GND
8PH
5 VSENSE
SHUTDOWN
LOGIC
BOOT
CHARGE
THERMAL
SHUTDOWN
SS
4
ENABLE THRESHOLD
ENABLE
COMPARATOR
+
+
–
6COMP
MAXIMUM
CLAMP
FREQUENCY
SHIFT
GATE
DRIVE
LOGIC
BOOT
UNDERVOLTAGE
LOCKOUT
OSCILLATOR
SLOPE
COMPENSATION
ECO-MODE
MAXIMUM CLAMP
DISCHARGE
LOGIC
VOLTAGE
REFERENCE
PWM
COMPARATOR
PWM
LATCH
6
QR
S
12 A/V
CURRENT
SENSE
ERROR
AMPLIFIER
IC1403 TPS54325PWPR
VO 1
VCC14
VFB 2
VREG5 3
SS 4
GND 5
PG 6
EN 7
PGND18
PGND29
SW110
SW211
VBST12
VIN13
VREG5
OCP
UV
OV
PWM
VREG5
-30%
+20%
XCON
CONTROL
LOGIC
EN
LOGIC
REF
REF
-10%
+

+
+

SOFT START
TSD
PROTECTION
LOGIC
UVLO
REF
REF
VREG5
VREG5
IC1407 S-80929CNMC-G8ZT2G
VDD 2
OUT 1
VSS
3
+
–
VREF
CD5
NC
4
DELAY
CIRCUIT