pq1cf2 ETC-unknow, pq1cf2 Datasheet - Page 6

• Manufacturer Part Number: pq1cf2
• Description: To-220 Type Chopper Regulator
• Manufacturer: ETC-unknow

Chopper Regulators
Fig. 2 ON/OFF Control and Soft Start
Fig. 3 Capacitor Cs Discharging Circuit
(2)Overcurrent protection
Fig. 4
When switching current exceeds overcurrent detecting level (I
in no time, and it maintains off-state of output Tr to next ON pulse. It means folding characteristics by pluse-by-pulse
method.
V
IN
Switching current
Output transistor
V
Capacitor Cs discharging circuit
IN
+
C
IN
1
+
PQ1CF2
ON
4
3
OFF
A
2
5
C
S
ON
T
fo (10 s)
1
r
ON/OFF control signal
Rs
1
Cs
OFF
5
L
PQ1CF2
), overcurrent protection function turns off the output Tr
D
4
3
Overcurrent detecting level (I
Rs<=50k
R
R
L
2
1
2
I
O
+
C
O
V
O
L
)
Load
PQ1CF2