Sony HT-NT5, Service Manual

Page: 60 / 74

HT-NT5
HT-NT5
60 60
• IC Block Diagrams
– AMP Board –
IC6001 BU33UC3WG-TR
2 GND
1 VIN
VOUT 5
VOLTAGE
REFERENCE
3 STBY
NC 4
STANDBY
OVER CURRENT
PROTECTION
THERMAL
SHUTDOWN
+
–
IC6002 RT7272BGSP
VIN 8
RLIM 7
COMP 6
FB 5
SW 1
BOOT
EN
2
3
GND 4
VA
VA VCC
+
+
+
+
+
+
Q S
R Q
VCC
VCC
0.8V
1.7V
1.2V
6
INTERNAL
REGULATOR
FOLDBACK
CONTROL
OSCILLATOR
SHUTDOWN
COMPARATOR
LOCKOUT
COMPARATOR
CURRENT
COMPARATOR
SLOPE
COMP
CURRENT
SENSE
AMPLIFIER
UV
COMPARATOR
+
0.4V
UV
EA
SS
IC6003 RT7295AGJ6F
COMPARATOR
SW 6
VIN 5
EN 4
BOOT 1
GND
FB
2
3
VIBIAS
VREF
PVCC
PVCC
GND SW
UGATE
LGATE
REGULATOR
VIN
DRIVER CONTROL
MIN OFF
+
PVCC
RIPPLE
GENERATOR
SW
OC
EN
ON-TIME
UV & OV
VIN
SW
IC6004, 6007 TAS5624ADDVR
GVDD_AB 1
VDD 2
OC_ADJ 3
RESET 4
INPUT_A 5
PVDD_CD
OUT_C
31
PVDD_CD 30
32
PVDD_CD 29
GND 33
INPUT_B 6
C_START 7
GND 9
GND 11
GND 10
GND 12
AVDD 13
INPUT_C 14
INPUT_D 15
OTW 17
PROTECTION
&
I/O LOGIC
+
–
+
–
+
–
TEMP
SENSE
STARTUP
CONTROL
AVDD
DVDD 8
DVDD
POWER-UP
RESET
CB3C OVER-LOAD
PROTECTION
UVP
GATE-
DRIVE
+
–
GATE-
DRIVE
GND
OUT_B
34
35
PVDD_AB 38
GND 42
GND 41
BST_A 44
BST_B 43
GATE-
DRIVE
PVDD_AB 36
PVDD_AB 37
OUT_A 39
OUT_A 40
OUT_D 27
GND 26
GND 25
BST_C 24
BST_D 23
OUT_D 28
PWM & TIMING
CONTROL
ANALOG
LOOP FILTER
ANALOG
LOOP FILTER
ANALOG
LOOP FILTER
ANALOG
LOOP FILTER
PWM & TIMING
CONTROL
PWM & TIMING
CONTROL
PWM
RECEIVER
PWM
RECEIVER
PWM
RECEIVER
PWM
RECEIVER
PWM & TIMING
CONTROL
GATE-
DRIVE
CLIP 18
FAULT 16
M3 21
M2 20
M1 19
GVDD_CD 22
BST_X
GVDD_X
AVDD
DVDD
– TOUCH Board –
IC1902 MM3411A33URE
VOUT 3
CE 1
GND 2
VDD 4
+
–
VOLTAGE
REFERENCE
CURRENT
LIMIT
BIAS
– POWER Board –
IC930 STR-Y6735 (US, CND, TW)
IC930 STR-Y6766B (Except US, CND, TW)
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
Ver. 1.1