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PI2003
? Series
Universal Active ORing Controller IC
Description
Features
The PI2003 ? 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
?
?
?
?
?
?
?
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
from -48V (GND).
Applications
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
?
?
?
?
?
Low-side -48Vbus Active ORing
N+1 Redundant Power Systems
Servers & High End Computing
Telecom Systems
High current Active ORing
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.
Typical Applications:
Figure 1: PI2003 Low-Side Active ORing
Package Information
The PI2003 is offered in the following packages:
? 10 Lead 3mm x 3mm DFN package
? 8 Lead SOIC package
Picor Corporation ? picorpower.com
PI2003
Rev 1.1
Page 1 of 16
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