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PI2007 Datasheet Preview

PI2007 Datasheet

Universal High Side Active ORing Controller IC

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PI2007 pdf
PI2007
Cool-ORing® Series
Universal High Side Active ORing Controller IC
Description
The PI2007 Cool-ORing® solution is a universal
high-speed Active ORing controller IC designed for
use with N-channel MOSFETs in redundant power
system architectures. The PI2007 Cool-ORing
controller enables an extremely low power loss
solution with fast dynamic response to fault
conditions, critical for high availability systems. The
PI2007 controls single or parallel MOSFETs to
address Active ORing applications protecting
against power source failures. The PI2007 has an
internal charge pump enabling an ideal solution in
12V or 36-75V bus high-side Active ORing
applications.
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 causes reverse current flow. The
controller auto-resets once the fault clears. The
MOSFET drain-to-source voltage is monitored to
detect reverse current flow. The PI2007 has an
internal charge pump to drive the gate of a high side
N-Channel MOSFET above the VC input. There is
an internal shunt regulator at the VC input for high
voltage applications.
Features
Fast dynamic response to power source failure,
with 80ns reverse current turn off delay time.
4A gate discharge current
Forward Over Current Fault indication
Accurate MOSFET drain-to-source voltage
sensing
Internal charge pump
FET check at initial power-up
100V for 100ms, operation in high side
application
VC under voltage fault detection
Applications
N+1 Redundant Power Systems
Servers & High End Computing
Telecom Systems
High-side Active ORing
High current Active ORing
Package Information
The PI2007 is offered in the following packages:
10 Lead 3mm x 3mm DFN package
Typical Applications:
Figure 1: PI2007 High Side Active ORing for 12V
Bus applications
Picor Corporation • picorpower.com
Figure 2: PI2007 referenced to Vin in high voltage
high side Acti ve ORing applications
PI2007
Rev 1.3
Page 1 of 19



Picor
Picor

PI2007 Datasheet Preview

PI2007 Datasheet

Universal High Side Active ORing Controller IC

No Preview Available !

PI2007 pdf
Pin Description
Pin Name Pin
Number
Description
PGND
1
Gate Turn Off Switch Return: This pin is the high current return path for the gate driver
during turn off. Connect this pin to the low side of the VC coupling capacitor and SGND.
Gate Drive Output: This pin drives the gate of the external N-channel MOSFET. Under
normal operating conditions and when VSP-SN > 6mV, the GATE pin pulls high to
GATE
2 approximately 2*VC with respect to the SGND pin. The controller turns the gate off
during a reverse current fault that is below the reverse voltage threshold (-6mV) and
when VC is in Under Voltage (7.15V).
Controller Input Supply: This pin is the supply pin for the control circuitry and gate
driver. Connect a 1μF capacitor between the VC pin and the SGND pin. Voltage on this
VC 3 pin is regulated to 11.7V with respect to SGND by an internal shunt regulator. For high
voltage supply applications connect a shunt resistor between the SGND and PGND pins
and the supply return, as shown in Figure 2.
SGND
4
VC Return: This pin is the return (ground) for the control circuitry. Connect this pin to
the low side of VC decoupling capacitor.
Controller Input Supply With Limiting Resistor: This pin is connected internally to VC
VR 5 through a 420Ω resistor needed for Bus voltages greater than 10V and less than 14V.
Leave this pin open if unused.
Positive Sense Input: Connect SP pin to the Source pin of the external N-channel
SP 6 MOSFETs. The polarity of the voltage difference between SP and SN provides an
indication of current flow direction through the MOSFET.
NC
7, 10
Not Connected: Leave pins floating.
Negative Sense Input: Connect SN to the Drain pin of the external N-channel MOSFET.
SN 8 The polarity of the voltage difference between SP and SN provides an indication of
current flow direction through the MOSFET.
Fault Status Output: This open collector pin pulls low to indicate one of the several
potential fault conditions may exist. The FT pin will pull low after a reverse or forward
fault has been detected with a defined delay time (8μs). In addition, the FT pin will pull
FT 9 low when the controller input voltage is below the VC under-voltage threshold VVC-SGND <
7V. When VVC-SGND > 7.15V and 6mV < VSP-SN < 275mV this pin clears (High). In high
voltage applications this output must be translated with reference to the system return
with external circuitry, see Figure 19. Leave this pin open if unused.
Package Pin-Outs
10 Lead DFN (3mm x 3mm)
Top view
Picor Corporation • picorpower.com
PI2007
Rev 1.3
Page 2 of 19


Part Number PI2007
Description Universal High Side Active ORing Controller IC
Maker Picor
Total Page 19 Pages
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