RT8862 데이터 시트보기 (PDF) - Richtek Technology

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RT8862

Advanced 4/3/2/1-Phase PWM Controller with Embedded Drivers for CPU Core Power Supply

Richtek Technology 

RT8862

Function Block Diagram

RT

COMP

FB

OFS

Modulator

Waveform

Generator

-

+EA

IOFSP

Offset

IOFSN

+

OV

-

+

150mV

QR1/QR2

Transient

Response

Enhancement

SS/EN

EN/VTT

OV

OC

VIDOFF

POR

+

Soft Start

and

Fault

Logic

-

+

850mV

VIDSEL

VID7 to VID0

FBRTN

ADJ

IMAX/

IMAXPSI

IMONFB

GND

VID

Table

Generator

-

+

OC

-

Load Current

Monitor

POR

Power-On

Reset

5V

Regulator

IMON

Dynamic Phase

Control

+

-

OE4

PSI

MOSFET

Driver

+

MOSFET

-

OE3

Driver

+

-

OE2

+

-

OE1

-

I_SEN1

CH1

Current

SENSE

I_SEN2 CH2

-

Current

SENSE

AVG

CH3

-

I_SEN3 Current

SENSE

-

Temperature

Monitor

I_SEN4 CH4

Current

SENSE

IMON

TSEN

VCC12

VCC5

PS

BOOT1

UGATE1

PHASE1

LGATE1

BOOT2

UGATE2

PHASE2

LGATE2

PWM3

PWM4

ISP1

ISN1

ISP2

ISN2

ISP3

ISN3

ISP4

ISN4

VRHOT

www.richtek.com

14

DS8862-01 April 2011

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