Defining the Quality of Power Through Innovation

picorpower.com

Rev 1.1 08/08

800-735-6200

Cool-ORing™ Series

Universal Low-Side Active ORing Controller, PI2003

Optimized for - 48 V ORing applications

Fast Dynamic Response to Power Source failures,

with 160 ns reverse current turn-off delay time

4 A gate discharge current

Accurate MOSFET drain - to - source voltage sensing

to indicate system level fault conditions

Low quiescent current enables biasing directly

from - 48 V (GND)

100 V for 100 ms operation in low side applications

Active low fault flag output

The PI2003 Cool-ORing™ solution is a universal high-speed

Active ORing controller IC designed for use with N-channel MOSFETs

and is optimized for -48V redundant power system architectures.

The PI2003 Cool-ORing controller enables an extremely low

power loss solution with fast dynamic response to fault

conditions, critical for high availability systems. The PI2003 controls

single or parallel MOSFETs to address Active ORing applications

protecting against power source failures. The PI2003 is optimized for

low-side -48V Active ORing applications. An internal VC shunt

regulator enables biasing of the controller directly from -48 V (GND).

The gate drive output turns the MOSFET on in normal steady state

operation, while achieving high speed turn-off during input power

source fault conditions, that cause reverse current flow, with

auto-reset once the fault clears. The MOSFET drain-to-source

voltage is monitored to detect normal forward, excessive forward,

light load and reverse current flow. The PI2003 provides an active low

fault flag output to the system during excessive forward current,

reverse current, light load and VC under-voltage.

Low-side -48 V bus Active ORing

N+1 Redundant Power Systems

Servers & High End Computing

Telecom Systems

High current Active ORing

Product Description

Applications

PI2003 Features

PI2003

Part Numbering

Typical Application

3 mm x 3 mm

10-Lead

TDFN

5 mm x 6 mm

8-Lead

SOIC

Low-side Active ORing

Return

PI2003

FT

VC

SN

GATE SP GND

–Vin1

PI2003

FT

VC

SN

GATE SP GND

–Vin2

Part Number

Package

Target

Bias

MOSFET Gate

MOSFET Gate

Turn-off

Shipment

Application

Supply

Drive Voltage

Discharge Current

Delay Time

Packaging

PI2003-00-QEIG

3mm x 3mm

Universal

Internal

Tape

10 Lead TDFN

Low-Side

VC Clamp

VC – 0.25 V

4 A (typ)

160 ns (typ.)

and

PI2003-00-SOIG

8 Lead

Active ORing

10 V – 12 V

Reel

SOIC

Up to 100 V

Evaluation Boards

PI2003-EVAL1

PI2003 Evaluation Board using 3 mm x 3 mm TDFN package and 100V SO-8 MOSFET in low-side configuration.