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Picor Corporation • picorpower.com

PI2007

Rev 1.3

Figure 13: PI2007 performance in response to a fault (input short), configured for a +48V application as shown in

Figure 17.

Application Information:

The PI2007 is designed to replace ORing diodes in

high

current

redundant

power

architectures.

Replacing a traditional diode with a PI2007 controller

IC and a low on-state resistance N-channel MOSFET

will result in significant power dissipation reduction as

well as board space reduction, efficiency improvement

and additional protection features.

This section

describes in detail the procedure to follow when

designing with the PI2007 Active ORing controller and

N-Channel MOSFETs.

Two different Active ORing

design examples are presented.

VC Bias:

The PI2007 has a separate input (VC) that provides

power to the control circuitry, the charge pump and

the gate driver. An internal regulator clamps the VC

A bypass ceramic

turn off return (PGND) should be connected to SGND

the Gate is turned off in response to a fault.

In 12V system applications, where the input voltage

(Vin) is between 10V and 14V, connect the VR pin to

Vin and connect SGND and PGND to the Vin return.

A 420Ω internal resistor is connected between the VR

pin and the VC pin.

In high voltage applications, above 14V, a bias

drop Schottky diode are required.

Connect one

terminal to ground (Vin return). The Schottky diode

anode will be connected to the SGND pin and its

cathode connected at the VC pin. See typical

application drawings on page 1.

Recommended Schottky:

PMEG3005AEA

: from NXP or equivalent