RT9230 Просмотр технического описания (PDF) - Richtek Technology

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RT9230

1.5V advanced dual PWM and dual linear power controller

Richtek Technology 

RT9230

Function Block Diagram

GATE3

DRIVE4

VSEN4

UGATE2

PHASE2

VSEN2

SELECT

VSEN3

OCSET2

VSEN1

OCSET1

VCC

VAU X

_

75%

+

_ 1.26V

VCC

DR IVE2

LUV

L IN EAR

UN DER

VOLTAGE

200µA

110%

90%

115%

200µA

POWER-ON

RESET (POR)

UPPER

DR IVE

VCC

OC2

INHIBIT

OV

SOFT-START

GATE

PWM

COMP2

& FAULT

LOGIC

CONTROL PWM2 _

INHIBIT

FAULT

COMPEN-

SATION

_

+

ERROR

AMP2

75%

OC1

_

ERROR

AMP1

GATE

PWM1

CONTROL

LOGIC

PWM

COMP1

LOWER

DR IVE

VCC

+

1.5V or 3.3V

OSCILLATOR

VCC

28µA

5V

DACOUT

COMPEN-

SATION

TTL D/A

CONVERTER

(DAC)

FAULT

SS

FB1

VID0 VID2 VID4

VID1 VID3

VAUX

PGOOD

UGATE1

PHASE1

LGATE1

PGND

GND

www.richtek-ic.com.tw

4

DS9230-03 July 2001

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