L634 データシートの表示（PDF） - STMicroelectronics

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L634

THREE PHASE MOTOR DRIVER

STMicroelectronics 

L6234

ELECTRICAL CHARACTERISTICS (Vs = 42V ; Tj = 25°C unless otherwise specified)

Symbol

VS

Vref

IS

TS

TD

Parameter

Supply Voltage

Reference Voltage

Quiescent Supply Current

Thermal Shutdown

Dead Time Protection

Test Condition

Min. Typ. Max. Unit

7

52

V

10

V

6.5

mA

150

°C

300

ns

OUTPUT DMOS TRANSISTOR

Symbol

IDSS

RDS (ON)

Parameter

Leakage Current

ON Resistance

Test Condition

Min. Typ. Max. Unit

1

mA

0.3

Ω

SOURCE DRAIN DIODE

Symbol

VSD

TRR

Tpr

Parameter

Forward ON Voltage

Reverse Recovery Time

Forward Recovery Time

Test Condition

ISD = 4A; EN = LOW

IF = 4A

Min. Typ. Max. Unit

1.2

V

900

ns

200

ns

LOGIC LEVELS

Symbol

VINL, VENL

VINH, VENH

IINL, IENL

IINH, IENH

Parameter

Input LOW Voltage

Input HIGH Voltage

Input LOW Current

Input HIGH Current

Test Condition

VIN,VEN = L

VIN,VEN = H

Min. Typ. Max. Unit

-0.3

0.8

V

2

7

V

-10

µA

30

µA

CIRCUIT DESCRIPTION

L6234 is a triple half bridge designed to drive

brushless DC motors.

Each half bridge has 2 power DMOS transistors

with RdsON = 0.3Ω. The 3 half bridges can be

controlled independently by means of the 3 inputs

IN1, IN2, IN3 and the 3 inputs EN1, EN2, and

EN3. An external connection to the 3 common

low side DMOS sources is provided to connect a

sensing resistor for constant current chopping ap-

plication.

The driving stage and the logic stage are de-

signed to work from 7V to 52V.

5/10

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