1

HIP4020

Half Amp Full Bridge Power Driver

for Small 3V, 5V and 12V DC Motors

Description

In the Functional Block Diagram of the HIP4020, the four switches

and a load are arranged in an H-Configuration so that the drive volt-

age from terminals OUTA and OUTB can be cross-switched to

change the direction of current flow in the load. This is commonly

known as 4-quadrant load control. As shown in the Block Diagram,

switches Q1 and Q4 are conducting or in an ON state when current

respect to OUTB. Switches Q1 and Q4 are operated synchronously

by the control logic. The control logic switches Q3 and Q2 to an open

or OFF state when Q1 and Q4 are switched ON. To reverse the cur-

rent flow in the load, the switch states are reversed where Q1 and Q4

are OFF while Q2 and Q3 are ON. Consequently, current then flows

respect to OUTA.

Terminals ENA and ENB are ENABLE Inputs for the Logic A and B

Input Controls. The ILF output is an Over-Current Limit Fault Flag Out-

put and indicates a fault condition for either Output A or B or both. The

nal. The use of level shifters in the gate drive circuitry to the NMOS

(low-side) output stages allows controlled level shifting of the output

drive relative to ground.

Ordering Information

PART NUMBER

TEMP.

PACKAGE

PKG. NO.

HIP4020IB

-40 to 85

20 Ld SOIC

M20.3

Features

• Two Independent Controlled Complementary

MOS Power Output Half H-Drivers (Full-Bridge)

for Nominal 3V to 12V Power Supply Operation

• Split

±Voltage Power Supply Option for Output

Drivers

• Load Switching Capabilities to 0.5A

• Single Supply Range +2.5V to +15V

• Low Standby Current

• CMOS/TTL Compatible Input Logic

• Over-Temperature Shutdown Protection

• Over-Current Limit Protection

• Over-Current Fault Flag Output

• Direction, Braking and PWM Control

Applications

• DC Motor Driver

• Relay and Solenoid Drivers

• Stepper Motor Controller

• Air Core Gauge Instrument Driver

• Speedometer Displays

• Tachometer Displays

• Remote Power Switch

• Battery Operated Switch Circuits

• Logic and Microcontroller Operated Switch

June 1997

Pinout

HIP4020 SOIC

TOP VIEW

Block Diagram

11

12

13

14

15

16

17

18

20

19

10

9

8

7

6

5

4

3

2

1

NC

ILF

B2

ENB

B1

A1

ENA

A2

NC

NC

NC

OUTB

OUTA

NC

NC

OUTB

OUTA

B1

B2

ENB

A1

A2

ENA

ILF

Q1

Q3

Q2

Q4

File Number

3976.1

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

http://www.intersil.com or 407-727-9207