HT-CT780
52
IC503 TAS5624ADDVR
IC603 TPS542941PWPR
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
VIN2
16
VBST2
15
SW2
14
PGND2
13
EN2
12
PG2
11
VFB2
10
VREG5
9
VIN1 1
VBST1
SW1
2
3
PGND1 4
EN1 5
PG1
VFB1
6
7
GND 8
VREG5
VREG5
PROTECTION
LOGIC
+
CH1 MIN-OFF
TIMER
+
+
REF2
PGND2
SW2
+
REF_OCL
SW2
SS2
ERR COMP
+
32%
UV
UV2
ZC2
ZC1
OCP2
OCP1
CH2 MIN-OFF
TIMER
+
+
+
REF1
PGND1
PGND
PGND
VIN1
CONTROL
LOGIC
CONTROL
LOGIC
SW1
+
REF_OCL
XCON
XCON
SW1
SS1
UV1
UV2
UVLO
TSD
ERR COMP
+
+
+
+16%
16%
32%
UV
UV1
PG COMP
+
+
+16%
16%
PG COMP
SS1
SS2
PGND
EN LOGIC
5V REG
EN LOGIC
FIXED
SOFT START
REF1
REF2
REF
UVLO
VREG5
PGND