MP4056—TRIAC DIMMABLE, NON-ISOLATED OFFLINE LED CONTROLLER WITH APFC

MP4056 Rev.1.01

www.MonolithicPower.com

15

11/9/2016

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FUNCTION DIAGRAM

ZCD

Short

OVP

Current

Sense

Current

LImit

ZCD

S

D

MULT

COMP

DIM

Multiplier

Zero Current

Detection

Gate

Driver

Control

PWM/

PFC

Dimmer

Type

Detector

EMI

Filter

Dimmer

GND

VCC

UVLO /

EN

Power Supply

Real Current

Calculation

Gate

control

Latch off

DP

Current

Sources

Dimming

Phase

Detector

OTP

OCP

Gate

Driver

Control

DAMP

Gate

Driver

Control

NTC

Vref

Opto-coupler

Circuit

LED+

LED-

LED-

Figure 1: MP4056 Function Diagram