NCL30051 Просмотр технического описания (PDF) - ON Semiconductor

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Компоненты Описание

производитель

NCL30051

PFC and Half-Bridge Resonant Combo Controller for LED Lighting

ON Semiconductor 

NCL30051

PDRV

PZCD

PControl

PFB

PCT

PCS

VCC

UVLO

tPFC(off)Timer

Disable

ZCD

Comparator

PDRV Reset

+

10V VZCD

VDD

> 5.65 V

Clamp

Edge

Detector

< 2.25 V

UVLO Clamp PFC

PFC UVP

Error

Amplifier

S

Q

Dominant

Reset

Latch

RQ

VDD

IPFB

+

− VPREF

IPCT(C)

On time

Comparator

Level

Shifter

PFC OVP

Comparator

UVLO

VCC

Good

Level

Shifter

Pulse

Trigger

Delay

VCC

Management

Istart

+

−

+

−

VCC(on)/

VCC(off)/

UVLO

HV

VCC

CCC

Undervoltage

Detector

S

Dominant

Reset

Latch

Q

R

VCC

Dboost

HBoost

HDRVhi

Cboost

HVS

HDRVlo

Delay

GND

PFC UVP

Comparator

+

− VPOVP

+

VPUVP −

VCCGood

LEB

+

−

PCS

Comparator

VPCS(ILIM)

QQ

Clock

Disable

CLK

Q

Q

Enable

−

+

+

VHB(DIS−)

CLK +

−

+

5V/

3V −

VDD

IOSC(C)

OSC

4*IOSC(C)

PDRV

UVLO

SQ

R

VDD

Voltage

Reference

VREF

Figure 1. Functional Block Diagram

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