IR1152S データシートの表示（PDF） - International Rectifier

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IR1152S

FIXED 66kHz FREQUENCY, µPFC ONE CYCLE CONTROL PFC IC WITH BROWN-OUT PROTECTION

International Rectifier 

IR1152S

Block Diagram

OVP/EN

ISNS

VBIAS

OVP (OVP)

Comparator

VBIAS

VOVP

VOVP(RST)

VSLEEP

SLEEP

(POWER OFF)

ENABLE

Comparator

OVP (OVP)

OVP (VFB)

Comparator

VOVP

VOVP(RST)

VBIAS

OVP (VFB)

V BIAS

V BIAS

gDCVISNS

VISNS(PK)

IPK LIMIT

Comparator

Current

Amplifier

Vm

VCOMP START

fC

-

+

V BIAS

OVP (VFB)

OVP (OVP)

V BIAS

VFB

COMP

V BIAS

VREF

Voltage Error

Amplifier

INTEGRATED

RAMP +

OSCILLATOR

VM

0

MAX DUTY

CYCLE LIMIT

VCOMP

Discharge

BOP

V BIAS

VOLP

OPEN LOOP

Comparator

VBIAS

VBOP(EN)

VBOP

BROWN OUT

Comparator

OLP

BOP

UVLO/SLEEP

STAND-BY

SQ

R

V BIAS

GATE

UVLO

(POWER OFF)

UVLO

Block

Bias & Internal

References

VCC

COM

www.irf.com

6

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