TOP242-249 POWERINT [Power Integrations, Inc.], TOP242-249 Datasheet - Page 15
TOP242-249
Manufacturer Part Number
TOP242-249
Description
Family Extended Power, Design Flexible,Integrated Off-line Switcher
Manufacturer
POWERINT [Power Integrations, Inc.]
Datasheet
1.TOP242-249.pdf
(48 pages)
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Figure 13. Full Frequency Operation (132 kHz).
Typical Uses of FREQUENCY (F) Pin
Voltage
Input
DC
+
-
D
S
CONTROL
Figure 15. Half Frequency Standby Mode (For High Standby
F
C
Voltage
Input
DC
+
-
Efficiency).
PI-2654-071700
D
S
CONTROL
Q
20 kΩ
R
S
HF
can be an optocoupler output.
F
Figure 14. Half Frequency Operation (66 kHz).
C
1 nF
Voltage
Q
Input
S
DC
47 kΩ
+
-
STANDBY
PI-2656-040501
D
S
August 8, 2000
CONTROL
F
C
TOP242-249
PI-2655-071700
7/01
E
15
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