HA16107P Datasheet, PDF (31/40 Pages) Hitachi Semiconductor – PWM Switching Regulator for High-performance Voltage Mode Control

HA16107P/FP, HA16108P/FP
Operating Circuit Example
•Flyback Transforrmer Application Example
(IC Vref used as system as reference voltage)
Bridge Diode
Start-up Resistor _{140 V}
El-30
Trans former
82 kΩ
1W
2SK1567 40T
6T
51 Ω
Schottky barrier diode
HRP 24
+
+
5V
470 µF OUTPUT
−
HZP 16
−
RFI
FILTER
AC
INPUT
1.5 Ω
23T
3W
Current Sense
+
50 V
22 µF
HRP 32
V_IN
Current
Sense
L.P.F.
110 Ω
OUT
CL(+)
51 Ω
V_E
4700 pF
CL(−)
27 kΩ
R_T1
470 pF
fosc = 100 kHz,
C_T
Dumax = 50%
Frequency,
Max, Duty
Setting
R_T2
27 kΩ
HA16107P/FP
18.9 V
HZP 16
OVP
Detector
TL
+
E/O −
Timerlatch
Capacitor
16 V
1 µF
330
kΩ
IN(−)
510 kΩ
NC
68
Phase ^kΩ
Comp.
GND
IN(+)
3.225 V
ST
1 µF
−
+16 _V
Soft Start
Cap.
Vref ^{33kΩ 33kΩ}
6.45 V
+^−
1 µF
16 V
Rev.4.00 Jun 15, 2005 page 31 of 39