1

File Number

4419.4

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 321-724-7143

Hot Plug™ is a trademark of Core International, Inc.

HIP1012, HIP1012A

Dual Power Distribution Controller

The HIP1012 is a HOT SWAP dual supply power distribution

controller. Two external N-Channel MOSFETs are driven to

distribute power while providing load fault isolation.

At turn-on, the gate of each external N-Channel MOSFET is

charged with a 10

µA current source. Capacitors on each

gate (see the Typical Application Diagram), create a

programmable ramp (soft turn-on) to control inrush currents.

A built in charge pump supplies the gate drive for the 12V

supply N-Channel MOSFET switch.

Over current protection is facilitated by two external current

sense resistors. When the current through either resistor

exceeds the user programmed value the controller enters the

charging as the controller enters the time out period. Once

are latched off. In the event of a fault at least three times the

current limit level, the N-Channel MOSFET gates are pulled

low immediately before entering time out period. The

controller is reset by a rising edge on either PWRON pin.

Choosing the voltage selection mode the HIP1012 controls

either +12V/5V or +3.3V/+5V supplies.

For those applications where voltage tolerance is a concern

the HIP1012A has a minimum nominal over current threshold

voltage of 50mV as compared to 100mV for the HIP1012.

Features

• HOT SWAP Dual Power Distribution Control for +5V and

+12V or +5V and +3.3V

• Provides Fault Isolation

• Programmable Current Regulation Level

• Programmable Time Out

• Charge Pump Allows the Use of N-Channel MOSFETs

• Power Good and Over Current Latch Indicators

• Enhanced Over Current Sensitivity Available

• Redundant Power On Controls

• Adjustable Turn-On Ramp

• Protection During Turn-On

• Two Levels of Current Limit Detection Provide Fast

Response to Varying Fault Conditions

• Less Than 1

µs Response Time to Dead Short

•3

µs Response Time to 200% Current Overshoot

Applications

• Redundant Array of Independent Disks (RAID) System

• Power Distribution Control

• Hot Plug™, Hot Swap Components

Ordering Information

PART NUMBER

TEMP.

PACKAGE

PKG.

NO.

HIP1012CB

HIP1012ACB

-0 to 70

14 Ld SOIC

M14.15

HIP1012CB-T

HIP1012ACB-T

-0 to 70

14 Ld SOIC

Tape and Reel

M14.15

Pinout

HIP1012 (SOIC)

TOP VIEW

Typical Application Diagram

8

9

10

11

12

14

13

7

6

5

4

3

2

1

3/12VS

3/12VG

PWRON2

5VG

5VS

3/12VISEN

GND

PGOOD

5VISEN

MODE/

PWRON1

3/12VS

3/12VG

M/PON1

PWRON2

PGOOD

5VG

5VS

3/12VISEN

GND

5ISEN

HIP1012

12V

POWER ON

INPUTS

5V

5V OR 3.3V

OPTIONAL

Data Sheet

November 1999