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Vicor Corporation

PI2003 Datasheet Preview

PI2003 Datasheet

Universal Active ORing Controller IC

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PI2003
Cool-ORingTM Series
Universal Active ORing Controller IC
Description
The PI2003 Cool-ORingTM 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.
www.DaTtayShpeiect4aUl.cAompplications:
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
Figure 1: PI2003 Low-Side Active ORing
Picor Corporation • picorpower.com
PI2003
Rev 1.0
Page 1 of 16




Vicor Corporation

PI2003 Datasheet Preview

PI2003 Datasheet

Universal Active ORing Controller IC

No Preview Available !

Pin Description
Pin
Name
GND
Pin Number
10 Lead 8 Lead
TDFN SOIC
11
GATE
2
2
VC 3
3
FC 5
FT 6
SP 7
4
5
6
SN 8
7
Description
Ground: This pin is ground for the gate driver and control circuitry.
Gate Drive Output: This pin drives the gate of the external N-channel MOSFET.
Under normal operating conditions, the GATE pin pulls high to VC-0.5V. The
controller turns the gate off during a reverse current fault that exceeds the reverse
voltage threshold.
Controller Input Supply: This pin is the supply pin for the control circuitry and gate
driver. Connect a 1μF capacitor between VC pin and the GND pin. Voltage on this pin
is limited to 11V by an internal shunt regulator. For high voltage auxiliary supply
applications connect a shunt resistor between VC and the auxiliary supply.
Fault Clamp Input: Connect the FT pin to FC when it is pulled by a resistor to a
voltage higher than the VC pin to clamp it to VC plus a diode. Leave this pin open if
unused.
Fault State Output: This open collector pin pulls low when a fault occurs. Fault logic
inputs are VC Under-Voltage, Reverse Current, Forward Over-Current, and light load.
Leave this pin open if unused.
Positive Sense Input & Clamp: Connect SP pin to the Source pin of the external N-
channel MOSFET close to the GND pin. The polarity of the voltage difference
between SP and SN provides an indication of current flow direction through the
MOSFET.
Negative Sense Input & Clamp: Connect SN to the Drain pin of the external N-
channel MOSFET. The polarity of the voltage difference between SP and SN provides
an indication of current flow direction through the MOSFET.
www.DataSheet4U.com
Package Pin-Outs
10 Lead TDFN (3mm x 3mm)
Top view
8 Lead SOIC (5mm x 6mm)
Top view
Picor Corporation • picorpower.com
PI2003
Rev 1.0
Page 2 of 16


Part Number PI2003
Description Universal Active ORing Controller IC
Maker Vicor Corporation
Total Page 16 Pages
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