Picor Corporation •
picorpower.com
PI2127-EVAL1 User Guide
Rev. 1.0
Page
2 of 9
Cool-ORing
®
PI2127 Product Description
The PI2127
Cool-ORing
®
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 redundant power system
architectures. The PI2127
Cool-ORing®
solution is offered
in an extremely small, thermally enhanced 7mm x 8mm
LGA package and can be used in high side, medium
voltage Active ORing applications. The PI2127 enables
extremely low power loss with fast dynamic response to
fault conditions, critical for high availability systems.
The PI2127, with its 60V/8.5mΩ internal MOSFET
provides very high efficiency and low power loss during
steady state operation, while achieving high-speed turn-
off of the internal MOSFET during input power source
fault conditions that cause reverse current flow. The
PI2127 provides an active low fault flag output to the
system during reverse current, excessive forward over-
current and UVLO fault conditions.
shows a photo of the PI2127-EVAL1 evaluation
board, with two PI2127 SiPs used to form the two Active
ORing channels. The board is built with two identical
Active ORing circuits with options and features that
enable the user to fully explore the capabilities of the
PI2127
Cool-ORing®
solution.
Figure 1:
PI2127-EVAL1 Evaluation Board (1.8” x 1.8”)
Terminals Maximum Rating
.
Vin1+, Vin2+,
60V/12A
Vout+
60V/24A
1,
2
20V / 10mA
VL1, VL2 (R5=R6=1.5kΩ)*
5.5V
* VL1, VL2 voltage can be raised , but R5 and R6 values
have to be increased to accommodate the LEDs
Terminal
Description
Vin1+
Power source Input #1:
or bus input designed to accommodate up to 60V and 12A continuous current.
Vin1-
Vin1+ return connection
Vin2+
Power source Input #2:
or bus input designed to accommodate up to 60V and 12A continuous current.
Vin2-
Vin2+ return connection
1
PI2127 (U1) Fault pin:
referenced to the Gnd terminal (Vin1-)
2
PI2127 (U2) Fault pin:
referenced to the Gnd terminal (Vin2-)
EN1
PI2127 (U1) Enable:
leave open to enable the U1 and connect to return (Vin1-) to disable U1
EN2
PI2127 (U2) Enable:
leave open to enable the U2 and connect to return (Vin2-) to disable U2
Vout+
Output:
U1 and U2 D pins connection, connect to the load high side.
Vout-
Vout+ return connection
Note: Vin1-, Vin2- and Vout- are connected to the same point at the PCB bottom layer
Table 1:
PI2127-EVAL1 Evaluation Board Terminals Description
