TOP252 Ver la hoja de datos (PDF) - Power Integrations, Inc

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Fabricante

TOP252

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

Power Integrations, Inc 

TOP252-262

CONTROL (C)

MULTI-

FUNCTION (M)

VC

ZC

SHUNT REGULATOR/

ERROR AMPLIFIER

5.8 V

IFB

VI (LIMIT)

CURRENT

LIMIT

ADJUST

ON/OFF

+

5.8 V

4.8 V

-

INTERNAL UV

COMPARATOR

VBG + VT

STOP LOGIC

SOFT START

0

INTERNAL

1

SUPPLY

√ 16

SHUTDOWN/

AUTO-RESTART

HYSTERETIC

THERMAL

SHUTDOWN

V OVP OV/

UV

LINE

SENSE DCMAX

DCMAX

STOP SOFT

START

OSCILLATOR

WITH JITTER

F REDUCTION

DMAX

CLOCK

KPS(UPPER)

KPS(LOWER)

F REDUCTION

SOFT START

IFB

IPS(UPPER)

IPS(LOWER)

PWM

OFF

SQ

R

KPS(UPPER)

KPS(LOWER)

CURRENT LIMIT

COMPARATOR

SOURCE (S)

CONTROLLED

TURN-ON

GATE DRIVER

LEADING

EDGE

BLANKING

Figure 3a. Functional Block Diagram (P and G Packages).

CONTROL (C)

EXTERNAL

CURRENT

LIMIT (X)

VOLTAGE

MONITOR (V)

VC

ZC

SHUNT REGULATOR/

ERROR AMPLIFIER

5.8 V

IFB

VI (LIMIT)

CURRENT

LIMIT

ADJUST

ON/OFF

+

5.8 V

4.8 V

-

INTERNAL UV

COMPARATOR

VBG + VT

1V

STOP LOGIC

SOFT START

0

INTERNAL

1

SUPPLY

√ 16

SHUTDOWN/

AUTO-RESTART

HYSTERETIC

THERMAL

SHUTDOWN

V

OVP OV/

UV

LINE

SENSE DCMAX

DCMAX

STOP SOFT

START

OSCILLATOR

WITH JITTER

DMAX

CLOCK

F REDUCTION

KPS(UPPER)

KPS(LOWER)

F REDUCTION

SOFT START

IFB

IPS(UPPER)

IPS(LOWER)

PWM

OFF

SQ

R

PI-4508-120307

KPS(UPPER)

KPS(LOWER)

CURRENT LIMIT

COMPARATOR

SOURCE (S)

CONTROLLED

TURN-ON

GATE DRIVER

LEADING

EDGE

BLANKING

Figure 3b. Functional Block Diagram (M Package).

PI-4643-082907

DRAIN (D)

SOURCE (S)

DRAIN (D)

SOURCE (S)

4

Rev. H 06/13

www.powerint.com

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