PI2002 Datasheet, PDF (1/23 Pages) Vicor Corporation – Active ORing Controller IC with Load Disconnect Feature

PI2002
Cool-ORing^TM Series
Active ORing Controller IC with Load Disconnect Feature
Description
The PI2002 Cool-ORing^TM solution is a high-speed
Active ORing controller IC with a load disconnect
feature designed for use with back-to-back N-
channel MOSFETs in redundant power system
architectures. The PI2002 Cool-ORing controller
enables an extremely low power loss solution with
fast dynamic response to fault conditions, critical for
high availability systems. The PI2002 controls back-
to-back MOSFETs providing true bi-directional
switch capabilities to protect against both power
source and load fault conditions.
The gate drive output turns the MOSFETs 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 PI2002 has the
added benefit of being able to protect against output
load fault conditions that may induce excessive
forward current and device over-temperature by
removing gate drive from the back-to-back
MOSFETs with an auto-retry programmable off-time.
The back-to-back MOSFETs drain-to-drain voltage is
monitored to detect normal forward, excessive
forward, light load and reverse current flow. The
PI2002 provides an active low fault flag output to the
system during fault condition. A temperature
sensing function turns off the MOSFETs and
indicates a fault if the junction temperature exceeds
145°C.
Features
• Power Source & Load Fault Protection
• Fast Dynamic Response, with 120ns reverse &
150ns forward over-current turn-off delay time
• 4A gate discharge current
• Accurate back-to-back MOSFETs drain-to-drain
voltage sensing to indicate system level fault
conditions
• Programmable under & over-voltage detection
• Over temperature fault detection
• Programmable over-current Gate off time
• Programmable short circuit load detection
function
• Active low fault flag output
Applications
• N+1 Redundant Power Systems
• Servers & High End Computing
• Telecom Systems
• Active ORing with Load Disconnect
• High current Active ORing
Package Options
The PI2002 is offered in the following packages:
• 3mm x 3mm 10 Lead TDFN package
• 8 Lead SOIC
Typical Applications:
Figure 1a: PI2002 High Side ORing with load disconnect
Figure 1b: PI2002 Low Side Disconnect Switch
Picor Corporation • picorpower.com
PI2002
Rev1.1 Page 1 of 23