Sanyo Vizon DP32746 - Oscillator and Regulator IC Block Diagrams

— 31 —
GND
V
REF
Ifmin
Rfmin
VCO
EN1
Vthe1
Vthe2
EN2
V
S
V
BOOT
OUT
C
BOOT
LOAD
H.V.
LVG
UV
DETECTION
Vs
HVG
BOOTSTRAP
DRIVER
HVG
DRIVER
LVG DRIVER
Css
V
REF
Ifstart
Rfstart
Cf
OPAMP
+
–
OPOUT
OPIN–
OPIN+
DEAD
TIME
DRIVING
LOGIC
CONTROL
LOGIC
Iss
+
–
+
–
LEVEL
SHIFTER
12
5
6
7
4
2
3
1
9
8
10
11
14
15
16
Latch circuit reset
Thermal Shutdown circuit
Turn-on dead timer
ON width timer
Restart timer
Zero current detection
circuit
Standby circuit
Soft drive circuit
OCP threshold comparator
Burst mode OCP threshold comparator
UVLO comparator
Start-up circuit UVLO
comparator
Start-up circuit
OVP comparator
VUL
VOVP
Vref
IF/B
VTH(OCL)
VTH(burst limit)
R
S
Q
R
S
Q
Q1
VCC VIN Corrector
Emitter/OCLGND
F/B
Z/C
Vcc(start)
/
Vcc(stop)
Vcc(startup off)
/
Vcc(startup on)
7
94
1
2
53
IC1603 Oscillator, Regulator
IC1602 Oscillator, Regulator