TOP252PN Ver la hoja de datos (PDF) - Power Integrations, Inc

Número de pieza

componentes Descripción

Fabricante

TOP252PN

AC/DC Converters Off-Line Switcher IC 26W/64W PK

Power Integrations, Inc 

TOP252-262

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

QR

ON/OFF

47

-

kΩ

D

M

CONTROL

C

S

Figure 37. 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

Input

Voltage

RIL

ON/OFF

QR

1-6 kΩ

D

M

CONTROL

C

S

For RIL = 12 kΩ

ILIMIT = 61%

For RIL = 19 kΩ

ILIMIT = 37%

PI-4735-092107

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

(see M Pin Operation Description).

+

QR can be an optocoupler

output or can be replaced

by a manual switch.

ON/OFF

DC

Input

Voltage

7 kΩ

D

QR

RMC

M

RIL 12 kΩ

CONTROL

C

24 kΩ

RMC = 2RIL

-

S

PI-4736-060607

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

(see M Pin Operation Description).

+

DC

Input

Voltage

Reset 10 kΩ

VUV = IUV × RLS + VM (IM = IUV)

VOV = IOV × RLS + VM (IM = IOV)

For RLS = 4 MΩ

RLS

4 MΩ VUV = 102.8 VDC

VOV = 451 VDC

Sense Output Voltage

D

QR

DCMAX @ 100 VDC = 76%

M

DCMAX @ 375 VDC = 41%

CONTROL

C

-

S

PI-4757-120307

Figure 40. Line-Sensing for Undervoltage, Overvoltage, Line Feed-Forward and

Latched Output Overvoltage Protection with Device Reset.

20

Rev. H 06/13

www.powerint.com

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