12

July 1996

HIP4083

80V, 300mA

Three Phase High Side Driver

Features

• Independently Drives Three High Side N-Channel

MOSFETs in Three Phase Bridge Configuration

• Bootstrap Supply Max Voltage to 95VDC

• Bias Supply Operation from 7V to 15V

• Drives 1000pF Load with Typical Rise Times of 35ns

and Fall Times of 30ns

• CMOS/TTL Compatible Inputs

• Programmable Undervoltage Protection

Applications

• Brushless Motors

• High Side Switches

• AC Motor Drives

• Switched Reluctance Motor Drives

Description

The HIP4083 is a three phase high side N-channel MOSFET

driver, specifically targeted for PWM motor control. Two

HIP4083 may be used together for 3 phase full bridge appli-

cations (see application block diagram). Alternatively, the

lower gates may be controlled directly from a buffered micro-

processor output.

Unlike other members of the HIP408x family, the HIP4083

has no built in turn-on delay. Each output (AHO, BHO, and

CHO) will turn-on 65ns after its input is switched low. Like-

wise, each output will turn-off 60ns after its input is switched

high. Very short and very long dead times are possible when

two HIP4083 are used to drive a full bridge. This dead time is

controlled by the input signal timing.

The HIP4083 does not have a built in charge pump. There-

fore, the bootstrap capacitors must be recharged on a peri-

odic basis by initiating a short refresh pulse. In most bridge

applications, this will happen automatically every time the

lower FETs turn-on and the upper FETs turn-off. However, it

is still possible to use the HIP4083 in applications that

require the high side FETs to be on for extended periods of

time. This can be easily accomplished by sending a short

refresh pulse to the DIS pin.

The HIP4083 has reduced drive current compared to the

HIP4086 making it ideal for low to moderate power applica-

tions. The HIP4083 is optimized for applications where size

and cost are important. For high power applications driving

large power FETs, the HIP4086 is recommended.

Ordering Information

PART NUMBER

TEMP.

PACKAGE

PKG.

NO.

HIP4083AB

-40 to 105

16 Ld SOIC

M16.15

HIP4083AP

-40 to 105

16 Ld PDIP

E16.3

Pinout

HIP4083

PDIP, SOIC

TOP VIEW

14

15

16

9

13

12

11

10

1

2

3

4

5

7

6

8

AHI

BHI

CHI

DIS

AHO

BHB

CHS

CHO

UVLO

AHS

AHB

BHO

CHB

BHS

Application Block Diagram

12V

80V

GND

GND

AHI

BHI

CHI

AHO

BHO

CHO

HIP4083

12V

GND

AHI

BHI

CHI

AHO

BHO

CHO

MICRO-

CONTROLLER

(OPTIONAL)

HIP4083

File Number

4223

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

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