Picor Corporation • picorpower.com

Cool-ORing

The Cool-ORing PI2007 with an external industry

standard 25V N-channel MOSFET provides a complete

Active ORing solution designed for use in 12V Bus (10V to

14V) redundant power system architectures. The PI2007

controller with an N-channel MOSFET enables extremely

low power loss with fast dynamic response to fault

conditions, critical for high availability systems.

MOSFET provides very high efficiency and low power loss

during steady state operation. The PI2007 controller

provides an active low fault flag output to the system

during excessive forward current or reverse current, or

under VC under voltage condition.

Figure 1 shows a photo of the PI2007-EVAL2 evaluation

board, with two PI2007 controllers and two N-channel

MOSFET 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 PI2007 Active ORing controller.

Terminals Maximum Rating

Vin1, Vin2,

25V/15A

Vout

25V/30A

1,

2

-0.3V to 17.3V / 10mA

VL1, VL2 (R5=R6=1.5kΩ)*

5.5V

* VL1, VL2 voltage can be higher than 5.5V, but R5 and R6

values have to be increased to accommodate the LEDs

Figure 1: PI2007-EVAL2 Evaluation Board (1.8” x 1.8”)

Terminal

Description

Vin1

Power source Input #1 or bus input designed to accommodate up to 15A continuous current.

Vin2

Power source Input #2 or bus input designed to accommodate up to 15A continuous current.

1

PI2007 (U1) Fault pin: Monitors U1 fault conditions.

2

PI2007 (U2) Fault pin: Monitors U2 fault conditions.

VC1

PI2007 (U1) VC input: Leave this pin unconnected unless an alternative controller bias voltage.

VC2

PI2007 (U2) VC input: Leave this pin unconnected unless an alternative controller bias voltage.

VL1

Fault pin

1 LED supply

VL2

Fault pin

2 LED supply

Vout

Output: Q1 and Q2 MOSFETs drain connection, connect to the load high side.

Rtn

Return Connection: Three Rtn connections are available and are connected to a common point, the Ground plane. Input

Table 1: PI2007-EVAL2 Evaluation Board Terminals Description