IR5001S & (PbF)

1

www.irf.com

UNIVERSAL ACTIVE ORING CONTROLLER

Data Sheet No.PD60229 revB

F 1 - Typical application of the IR5001S in - 48V input, carrier class telecommunications equipment.

TYPICAL APPLICATION

APPLICATIONS

+48V input

-48V input B

-48V input A

IR5001

Vline

Vcc

FETch

INP

INN

Gnd

Vout

FETst

IR5001

DC

DC

FET Check Pulse

FET A Status

Fet B Status

A

B

Vline

Vcc

FETch

FETst

Vout

Gnd

INN

INP

FEATURES

DESCRIPTION

The IR5001S is a universal high-speed controller and

N-channel power MOSFET driver for Active ORing and

reverse polarity protection applications. The output voltage

of the IR5001S is determined based on the polarity of the

voltage difference on its input terminals. In particular, if the

current flow through an N-channel ORing FET is from

source to drain, the output of the IR5001S will be pulled

high to Vcc, thus turning the Active ORing FET on. If the

current reverses direction and flows from drain to source

(due to a short-circuit failure of the source, for example),

the IC will quickly switch the Active ORing FET off. Typical

turn-off delay for the IR5001S is only 130nS, which helps

to minimize voltage sags on the redundant dc voltage.

Both inputs to the IC (INN and INP) as well as Vline

input contain integrated high voltage resistors and internal

clamps. This makes the IR5001S suitable for applications

at voltages up to 100V, and with a minimum number of

external components.

Controller / driver IC in an SO-8 package for

implementation of Active ORing / reverse polarity

protection using N-channel Power MOSFETs

Suitable for both input ORing (for carrier class

telecom equipment) as well as output ORing for

redundant DC-DC and AC-DC power supplies

130ns Typical Turn-Off delay time

3A Peak Turn-Off gate drive current

Asymmetrical offset voltage of the internal high-speed

comparator prevents potential oscillations at light load

Ability to withstand continuous gate short conditions

Integrated voltage clamps on both comparator inputs

allow continuous application of up to 100V

Option to be powered either directly from 36-75V

universal telecom bus (100V max), or from an

external bias supply and bias resistor

Input/Output pins to determine the state of the Active

ORing circuit and power system redundancy

-48V/-24V Input Active ORing for carrier

class com m unication equipm ent

Reverse input polarity protection for

DC-DC power supplies

24V/48V output active ORing for

redundant AC-DC rectifiers

Low output voltage (12V, 5V, 3.3V...)

active ORing for redundant DC-DC

and AC-DC power supplies

Active ORing of multiple voltage

regulators for redundant processor

power

INP

Vout

Gnd

INN

Vline

4

3

2

1

5

6

7

8

FETst

Vcc

FETch

Top View

PACKAGE / ORDERING INFORMATION

PKG

PART

LEADFREE

PIN

PARTS

PARTS

T & R

DESIG.

NUMBER

S

IR5001S

IR5001SPbF

8

95

------

S

IR5001STR

IR5001STRPbF

8

-------

2500

Fig A