ir3500v International Rectifier Corp., ir3500v Datasheet

ir3500v

Manufacturer Part Number

ir3500v

Description

Xphase3 Vr11.1 Cpu Vtt Control Ic

Manufacturer

International Rectifier Corp.

Datasheet

1.IR3500V.pdf (34 pages)

Current page: 1 of 34
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DESCRIPTION

FEATURES

PGOOD

ENABLE

VRHOT

VID4

VID3

VID2

12V

The IR3500V Control IC combined with one or more xPhase3

MOSFET driver functions for a VR11.1 CPU VTT power supply.

•

Page 1 of 34

1 to X phase operation with matching Phase IC

0.7% overall system set point accuracy

Programmable 250kHz to 9MHz Daisy-chain digital phase timing clock oscillator frequency provides a per

phase switching frequency of 250kHz to 1.5MHz without external components

Programmable Dynamic VID Slew Rate

Programmable Load Line Output Impedance

High speed error amplifier with wide bandwidth of 30MHz and fast slew rate of 12V/us

Programmable converter current limit during soft start, hiccup with delay during normal operation

Central over voltage detection with programmable threshold and communication to phase IC(s)

Over voltage signal output to system with overvoltage detection during powerup and normal operation

Detection and protection of open remote sense line and open control loop

IC bias linear regulator control with programmable output voltage and UVLO

Programmable VRHOT function monitors temperature of power stage through a NTC thermistor

Remote sense amplifier with true converter voltage sensing and less than 50uA bias current

Simplified PGOOD output provides indication of proper operation and avoids false triggering

Small thermally enhanced 32L 5mm x 5mm MLPQ package

RoHS Compliant

VID7

VID6

VID5

VID4

VID3

VID2

VID1

VID0

RVCCLDRV

RHOTSET2

RHOTSET1

IR3500V

RVCCLFB1

RFB1

ROSC / OVP

Figure 1 – Single Phase VR11.1 CPU VTT Application Circuit

RVCCLFB2

RFB

VSETPT

RFB2

SS/DEL

OCSET

LGND

VDAC

VDRP

CFB

IIN

RDRP

ROCSET

ROSC

CSS/DEL

RVDAC

CVCCL

4.7uF

RCP

CVDAC

CCP1

CCP

XPHASE3

ISHARE

DACIN

LGND

PHSIN

IR3505

CVCCL

VR11.1 CPU VTT CONTROL IC

GATEH

BOOST

VCCL

CBST2

Phase IC implement the control and

RTHERMISTOR1

RTHERMISTOR2

RCS

CCS

July 03, 2008

Close to

Power Stage

CIN

DISTRIBUTION

IMPEDANCE

DATA SHEET

IR3500V

COUT

VOUT SENSE+

VOUT+

VOUT-

VOUT SENSE-

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