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Vicor Corporation

PI2001 Datasheet Preview

PI2001 Datasheet

Universal Active ORing Controller

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PI2001
Cool-ORingTM Series
Universal Active ORing Controller IC
Description
The PI2001 Cool-ORingTM solution is a universal
high-speed Active ORing controller IC designed for
use with N-channel MOSFETs in redundant power
system architectures. The PI2001 Cool-ORing
controller enables an extremely low power loss
solution with fast dynamic response to fault
conditions, critical for high availability systems. The
PI2001 controls single or parallel MOSFETs to
address Active ORing applications protecting
against power source failures. The PI2001 can be
used in either high-side or low-side Active ORing
applications and a master/slave feature allows the
paralleling of IC/MOSFET chipsets for high current
Active ORing.
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 PI2001 provides an active
low fault flag output to the system during excessive
forward current, reverse current, light load, over-
voltage, under-voltage and over-temperature fault
conditions. There is an internal shunt regulator at
www.DatthaSeheVeCt4Ui.ncpomut for high voltage applications and the
under-voltage and over-voltage thresholds are
programmable via external resistor dividers.
Typical Applications:
Features
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
Programmable under & over-voltage detection
Over temperature fault detection
Adjustable reverse current blanking timer
100V for 100ms operation in low side
applications
Master/Slave I/O for paralleling (TDFN only)
Active low fault flag output
Applications
N+1 Redundant Power Systems
Servers & High End Computing
Telecom Systems
Low & High-side Active ORing
High current Active ORing
Package Information
The PI2001 is offered in the following packages:
10 Lead 3mm x 3mm TDFN package
8 Lead SOIC package
Figure 1a: PI2001 High Side Active ORing
Picor Corporation • picorpower.com
PI2001
Figure 1b: PI2001 Low Side Active ORing
Rev 1.0 Page 1 of 23




Vicor Corporation

PI2001 Datasheet Preview

PI2001 Datasheet

Universal Active ORing Controller

No Preview Available !

Pin Description
Pin
Name
GND
Pin Number
10 Lead 8 Lead
TDFN SOIC
11
GATE
2
2
VC 3
3
SL 4 n/a
BK 5
4
FT 6
SP 7
SN 8
5
6
7
www.DaUtaVSheet4U.co9m
8
OV 10 n/a
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 9.5V (typ) with respect
to the SP pin. 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 15.5V by an internal shunt regulator. For high voltage auxiliary supply
applications connect a shunt resistor between VC and the auxiliary supply.
Slave Input-Output: This pin is used for paralleling multiple PI2001 solutions in high
power applications. When the PI2001 is configured as the Master, this pin functions
as an output capable of driving up to 10 SL pins of slaved PI2001 devices. It serves
as an input when the PI2001 is configured in slave mode.
Blanking Timer Input-Output: Connect a resistor from BK to GND to set the blanking
time for the Reverse Comparator function. To configure the controller in slave mode,
connect BK to VC. To configure the controller in master mode with the fastest turn-off
response, connect BK directly to GND.
Fault State Output: This open collector pin pulls low when a fault occurs. Fault logic
inputs are VC Under-Voltage, Input Under-Voltage, Input Over-Voltage, Forward Over-
Current, light load, reverse current, and Over-Temperature. Leave this pin open if
unused.
Positive Sense Input & Clamp: Connect SP pin to the Source 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.
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.
Input Under-Voltage Input: The UV pin is used to detect an input source under-
voltage condition in ground referenced applications. When the UV pin voltage drops
below the UV threshold, the FT pin pulls low indicating a fault condition. The input
voltage UV threshold is programmable through an external resistor divider. Connect
UV to VC to disable this function.
Input Over-Voltage Input: The OV pin is used to detect an input source over-voltage
condition in ground referenced applications. When the OV pin voltage crosses the OV
threshold, the FT pin pulls low indicating a fault condition. The input voltage OV
threshold is programmable through an external resistor divider. Connect OV to GND
to disable this function.
Package Pin-Outs
10 Lead TDFN (3mm x 3mm)
Top view
Picor Corporation • picorpower.com
8 Lead SOIC (5mm x 6mm)
Top view
PI2001
Rev 1.0 Page 2 of 23


Part Number PI2001
Description Universal Active ORing Controller
Maker Vicor Corporation
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PI2001 Datasheet PDF






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