TOP232PN Datasheet, PDF (11/36 Pages) Power Analog Micoelectronics – TOPSwitch-FX Family Design Flexible, EcoSmart®, Integrated Off-line Switcher

Typical Uses of FREQUENCY (F) Pin
TOP232-234
+
+
DC
Input
Voltage
-
D
CONTROL
C
S
F
Figure 10. Full Frequency Operation (132 kHz).
PI-2505-081199
DC
Input
Voltage
-
D
CONTROL
C
S
F
Figure 11. Half Frequency Operation (66 kHz).
PI-2506-081199
+
Q_S can be an optocoupler output.
DC
Input
Voltage
D
CONTROL
C
S
F
STANDBY
Q_S^{47 kΩ}
-
R_HF 20 kΩ ^{1 nF}
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Figure 12. Half Frequency Standby Mode (For High Standby
Efficiency).
11 ^B
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