TOP248R-TL Просмотр технического описания (PDF) - Power Integrations, Inc

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TOP248R-TL

TOPSwitch-GX Family Extended Power, Design Flexible, EcoSmart, Integrated Off-line Switcher

Power Integrations, Inc 

TOP242-250

Typical Uses of FREQUENCY (F) PIN

+

+

DC

Input

Voltage

-

D

CONTROL

C

S

F

Figure 13. Full Frequency Operation (132 kHz).

PI-2654-071700

DC

Input

Voltage

-

D

CONTROL

C

S

F

Figure 14. Half Frequency Operation (66 kHz).

PI-2655-071700

+

QS can be an optocoupler output.

DC

Input

Voltage

D

CONTROL

C

-

S

F

RHF

20 kΩ

QS47 kΩ

1 nF

STANDBY

PI-2656-040501

Figure 15. Half Frequency Standby Mode (For High Standby

Efficiency).

14 M

12/04

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