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PI2126
?? Series
30 Volt, 12 Amp Full-Function Active ORing Solution
Description
Features
The ?? PI2126 is a complete full-function
Active ORing solution with a high-speed ORing MOSFET
controller and a very low on-state resistance MOSFET
designed for use in 12V Bus redundant power system
architectures. The PI2126 Cool-ORing solution is offered
in an extremely small, thermally enhanced 5mm x 7mm
LGA package and can be used in high side Active ORing
applications. The PI2126 enables extremely low power
loss with fast dynamic response to fault conditions,
critical for high availability systems.
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Integrated High Performance 12A, 4.5m Ω MOSFET
Very small, high density fully-optimized solution with
simple PCB layout
Fast dynamic response to power source failures,
with 90ns reverse current turn-off delay time
Accurate sensing capability to indicate system fault
conditions (-6mV reverse threshold)
Internal charge pump
Fault Status output
Applications
The PI2126, with its 4.5m Ω internal MOSFET provides
very high efficiency and low power loss during steady
state operation. The PI2126 monitors the current
direction in the MOSFET and will respond very fast to a
reverse current due to input power source fault
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N+1 Redundant Power Systems
Servers & High End Computing
Telecom Systems
High-side Active ORing
condition to prevent undesired high current build-up in
the system. The PI2126 provides an active low fault flag
output to the system during reverse current, excessive
Package Information
The PI2126 is offered in the following package:
forward over-current and UVLO fault conditions.
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25-pin 5mm x 7mm thermally enhanced LGA
package, achieving <11°C/W R θJ -PCB
Typical Application:
Vin1
S
D
SP
VR
VC
PI2126
SN
FT
FT
Applied Input Short
Normal operation
0A
Input
Current
Reverse Current
Vin2
S
D
SP
VR
VC
PI2126
SN
FT
FT
Reverse detection
V(D) Redundant Bus
V(S) (Input)
MOSFET Turn Off Time
0V
90ns
Figure 1: PI2126 High Side Active ORing
Figure 2: PI2126 response time to an input short fault
condition
Picor Corporation ? picorpower.com
PI2126
Rev 1.1
Page 1 of 15
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