TOP242-249 データシートの表示（PDF） - Power Integrations, Inc

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TOP242-249

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

Power Integrations, Inc 

TOP242-249

Typical Uses of MULTI-FUNCTION (M) Pin (cont.)

+

QR can be an optocoupler

output or can be replaced by

a manual switch.

DC

Input

Voltage

ON/OFF

QR

47 kΩ

-

D

M

CONTROL

C

S

Figure 36. Active-on (Fail Safe) Remote ON/OFF.

PI-2519-040501

+

QR can be an optocoupler

output or can be replaced

by a manual switch.

DC ON/OFF

Input

Voltage

QR

47 kΩ

D

RMC

M 45 kΩ

CONTROL

C

-

S

PI-2522-040501

Figure 37. Active-off Remote ON/OFF. Maximum Duty Cycle will

be Reduced.

+

DC

Input

Voltage

RIL

ON/OFF

QR

4-7 kΩ

QR can be an optocoupler

output or can be replaced

by a manual switch.

For RIL = 12 kΩ

ILIMIT = 69 %

D

M

For RIL = 25 kΩ

ILIMIT = 43 %

CONTROL

C

S

PI-2520-040501

Figure 38. Active-on Remote ON/OFF with Externally Set

Current Limit.

+

QR can be an optocoupler

output or can be replaced

by a manual switch.

QR

DC

ON/OFF

47 kΩ

Input

Voltage

RMC

D

M

RIL 12 kΩ

CONTROL

C

24 kΩ

RMC = 2RIL

-

S

PI-2521-040501

Figure 39. Active-off Remote ON/OFF with Externally Set

Current Limit.

20 E

7/01

+

QR can be an optocoupler

output or can be replaced

RLS 2 MΩ

by a manual switch.

QR

DC ON/OFF

Input

47 kΩ

Voltage

D

M

CONTROL

C

For RLS = 2 MΩ

VUV = 100 VDC

VOV = 450 VDC

-

S

PI-2523-040501

Figure 40. Active-off Remote ON/OFF with LINE-SENSE.

August 8, 2000

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