PI2003

Cool-ORing

Universal Active ORing Controller IC

Description

The PI2003 Cool-ORing

TM

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 input power 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 -48V low-side

Active ORing applications. An internal VC shunt

regulator enables biasing of the controller directly

from -48V(GND).

The gate drive output turns the MOSFET on during

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 and light load.

Features

•

Optimized for -48V ORing applications

•

Fast Dynamic Response to Power Source

failures, with 160ns reverse current turn-off

delay time

•

4A gate discharge current

•

Accurate MOSFET drain-to-source voltage

sensing to indicate system level fault conditions

•

Low quiescent current enables biasing directly

from -48V(GND).

•

100V for 100ms operation in low side

applications

•

Active low fault flag output

Applications

•

Low-side -48Vbus Active ORing

•

N+1 Redundant Power Systems

•

Servers & High End Computing

•

Telecom Systems

•

High current Active ORing

Package Information

The PI2003 is offered in the following packages:

•

10 Lead 3mm x 3mm TDFN package

•

8 Lead SOIC package

Typical Applications:

Figure 1:

PI2003 Low-Side Active ORing

Picor Corporation • picorpower.com

PI2003

Rev 1.0