ir3502a International Rectifier Corp., ir3502a Datasheet

ir3502a

Manufacturer Part Number

ir3502a

Description

Xphase3 Control Ic

Manufacturer

International Rectifier Corp.

Datasheet

1.IR3502A.pdf (1 pages)

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DESCRIPTION

FEATURES

ORDERING INFORMATION

The IR3502A control IC combined with an XPHASE3

to implement a complete VR11.0 and VR11.1 power solution. The IR3502A provides overall system control

and interfaces with any number of Phase ICs, each driving and monitoring a single phase. The XPhase3

architecture results in a power supply that is smaller, less expensive, and easier to design while providing

higher efficiency than conventional approaches.

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Page 1 of 38

1 to X phase operation with matching Phase IC

0.5% overall system set point accuracy

Daisy-chain digital phase timing provides accurate phase interleaving without external components

Programmable 250kHz to 9MHz clock oscillator frequency provides per phase switching frequency of

250kHz to 1.5MHz

Programmable Dynamic VID Slew Rate

Programmable VID Offset or No Offset

Programmable Load Line Output Impedance

High speed error amplifier with wide bandwidth of 30MHz and fast slew rate of 10V/us

Programmable constant converter output current limit during soft start

Hiccup over current protection with delay during normal operation

Central over voltage detection and latch with programmable threshold and communication to phase ICs

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

Load current reporting

Single NTC thermistor compensation for correct current reporting, OC Threshold, and Droop

Detection and protection of open remote sense line

Open control loop protection

IC bias linear regulator controller

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

Remote sense amplifier with true converter voltage sensing

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

RoHS Compliant

Samples only

IR3502AMTRPBF

* IR3502AMPBF

Device

IR Confidential

(5 x 5 mm body)

32 Lead MLPQ

Package

Phase IC provides a full featured and flexible way

XPHASE3

Order Quantity

100 piece strips

3000 per reel

Apr 07 2008

DATA SHEET

IR3502A

CONTROL IC

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