Ic Block Diagrams - Sony STR-DN850 Service Manual

• IC Block Diagrams

IC1911 TPS54394 PWPR (DCDC BOARD)
VIN1 1
VBST1 2
SW1 3
PGND1 4
-16%
–
+
PG
–
Comp
+
+16%
PGND
-32% +
UV1
–
Ref1
+
+ Err
SS1 Comp
–
PGND
EN1 5
EN
EN Logic
Logic
PG1 6
VFB1 7
GND 8
CH1 Min-off timer
CH2 Min-off timer
SS1
Fixed
SoftStart
UV1
SS2
UV2
UVLO
TSD
-32% +
UV2
–
PGND
+
Ref 2
SS2 + Err
Comp
–
-16% –
+
PG
–
Comp
+
+16%
PGND
9 10 11 12
IC4020 TCA9517DGKR (FRONT HDMI BOARD) (DN1060)
V CCA 1
SCLA 2
SDAA 3
GND 4
V CCB
Pullup
Resistor
VREG5
Control logic
Xcon
PGND1
Ref_OCL PGND1
+ +
– SW1 – SW1
OCP1 ZC1
VIN1
5VREG
Ref1
REF
Ref2
Protection UVLO
Logic
VREG5
Control logic
Xcon
PGND2
Ref_OCL PGND2
+ +
SW2 SW2
– –
OCP2 ZC2
8 V CCB
7 SCLB
6 SDAB
5
EN
16 VIN2
15 VBST2
14 SW2
13 PGND2
STR-DN860/DN1060
79