NCP81243_17 datasheet(4/26 Pages) ONSEMI

Part #	NCP81243

Description	Dual Output 3 & 2 Phase Controller

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Manufacturer	ONSEMI [ON Semiconductor]

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NCP81243

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4

ADC

DIFFAMP

OVP

DAC

GND

CSREF

ERROR

AMP

THERMAL

MONITOR

DATA

REGISTERS

Intel proprietary interface INTER

FACE

DAC

CURRENT

MEASUREMENT

& LIMIT

CS

AMP

MUX

CURRENT

BALANCE

PWM

GENERATORS

POWER STATE

STAGE

UVLO & EN

RAMP

GENERATORS

VR READY

COMPARATOR

ENABLE

COMPA

OVP

ENABLE

VSN

VSP

TSENSE

VRHOT

SDIO

ALERT

SCLK

VRDY

CSP1A

CSN1A

CSP2A

CSN2A

DIFFOUT

FB

COMP

ILIM

IOUT

CSSUM

CSREF

CSCOMP

VSP

VSN

OVP

ENABLE

VSP

VSN

DAC

IPH2A

IPH1A

RAMP1A

RAMP2A

NCP81243

AUX DAC

AUX

DAC

VSPA

VSNA

AUX DAC

AUX

OVP

VSPA

VSNA

OVPA

TSENSEA

AUX

DIFFAMP

ERROR

AMP

CURRENT

MEASUREMENT

& LIMIT

AUX

CS

AMP

VSNA

VSPA

DIFFOUTA

FBA

COMPA

ILIMA

IOUTA

CSSUMA

CSREFA

CSCOMPA

VSP-VSN

VSPA-VSNA

TSENSE

TSENSEA

IMAX

IMAXA

IOUT

IOUTA

ADDR

ADDRA

CURRENT

BALANCE

PWM

GENERATORS

POWER STATE

STAGE

ENABLE

COMP

OVP

CSP1

CSN1

CSP3

CSN3

CSP2

CSN2

IPH3

IPH2

IPH1

RAMP1

RAMP2

RAMP3

VBOOT

VBOOTA

ADDR

ADDRA

Figure 3. 3 + 2 Block Diagram

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NCP81243 Datasheet(PDF) 4 Page - ON Semiconductor

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