L6204 데이터 시트보기 (PDF) - STMicroelectronics

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L6204

DMOS DUAL FULL BRIDGE DRIVER

STMicroelectronics 

L6204

APPLICATION DIAGRAM

Vs

C1

D1

VBOOT

Vs1 OUT1 OUT2

A

STEPPER MOTOR

B

Vs2 OUT3 OUT4

IN1

IN4

t(s) ENABLE1

uc IN2

CHARGE

PUMP

rod BOOTSTRAP

OSCILLATOR

P D2

C2

THERMAL

SHUT DOWN

SENSE1

SENSE1

RS1

GND

SENSE2

SENSE2

RS2

ENABLE 2

IN3

solete CIRCUIT DESCRIPTION

b L6204 is a dual full bridge IC designed to drive DC motors, stepper motors and other inductive loads. Each

O bridge has 4 power DMOS transistor with RDSon = 1.2Ω and the relative protection and control circuitry.

- (see fig. 3)

t(s) The 4 half bridges can be controlled independently by means of the 4 inputs IN!, IN2, IN3, IN4 and 2 en-

able inputs ENABLE1 and ENABLE2.

uc External connections are provided so that sensing resistors can be added for constant current chopper

d applications.

te Pro LOGIC DRIVE (*)

INPUTS

ole IN1

IN2

Obs IN3

IN4

OUTPUT MOSFETS

EN1=EN2=H

L

L

Sink 1, Sink 2

L

H

Sink 1, Source 2

H

L

Source 1, Sink 2

H

H

Source 1, Source 2

EN1=EN2=L

X

X

All transistor turned OFF

L = Low H = High X = Don’t care

(*) True table for the two full bridges

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