NCP1608 데이터 시트보기 (PDF) - ON Semiconductor

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NCP1608

Critical Conduction Mode PFC Controller Utilizing OTA

ON Semiconductor 

AC Line

EMI

Filter

NCP1608

Vin

L

NB:NZCD

RZCD

+

Cin

Rout1

Rout2

CCOMP Ct

NCP1608

VCC

1

8

FB

VCC

2

7

Control DRV

3

Ct

6

GND

4

CS

5

ZCD

Figure 1. Typical Application

D

M

Vout

LOAD

(Ballast,

SMPS, etc.)

+

Cbulk

Rsense

Vout

Cbulk

D

+ OVP

+−

Rout1

VOVP

− UVP

++

VUVP

FB

E/A −

+

Rout2

RFB

gm

+

VREF

POK

(Enable EA)

VCC

+ UVLO

+-

VDD Reg

VDD

VDDGD

VCC

mVDD

Fault

Haversine

Vin

L

NB:NZCD

Control

CCOMP

Ct

Ct

M

CS

Rsense

RZCD

ZCD

VControl

VDD

Icharge

VEAH

Clamp

Add Ct

Offset

PWM

−

+

POK

LEB

+

+ OCP

−

VILIM

+

+

−

VZCD(ARM)

+

+−

VZCD(TRIG)

ZCD Clamp

DRV

SQ

RQ

Reset

Off Timer

mVDD

Demag

SQ

RQ

SQ

RQ

SQ

RQ

VCC

UVLO

SQ

RQ

VDDGD

mVDD

POK

DRV

GND

All SR Latches are Reset Dominant

Figure 2. Block Diagram

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