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L9230

March 2003

This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.

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OPERATING SUPPLY VOLTAGE 5V TO 28V

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OUTPUT TRANSISTOR (AT 25°C)

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CONTINOUS DC LOAD CURRENT 5A

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OUTPUT CURRENT LIMITATION AT TYP. 6A

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SHORT CIRCUIT SHUT DOWN FOR OUTPUT

CURRENTS OVER 8A

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LOGIC- INPUTS TTL/CMOS-COMPATIBLE

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OPERATING-FREQUENCY UP TO 30 kHz

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OVER TEMPERATURE PROTECTION

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SHORT CIRCUIT PROTECTION

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UNDERVOLTAGE DISABLE FUNCTION

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DIAGNOSTIC BY SPI OR STATUS-FLAG

(CONFIGURABLE)

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ENABLE AND DISABLE INPUT

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SO20 POWER PACKAGE

DESCRIPTION

The L9230 is an SPI controlled H-Bridge, designed

for the control of DC and stepper motors in safety crit-

ical applications and under extreme environmental

conditions.

The H-Bridge is protected against over temperature

and short circuits and has an under voltage lockout

ply). All malfunctions cause the output stages to go

tristate.

The H-Bridge contains integrated free-wheel diodes.

In case of free-wheeling condition, the lowside tran-

sistor is switched on in parallel of its diode to reduce

the current injected into the substrate.

Switching in parallel is only allowed, if the voltage-

level of the according output-stage is below the

ground-level.In this case it must be ensured, that the

upper transistor is switched off.

PowerSO20

BARE-DIE

ORDERING NUMBERS:

L9230

L9230-DIE1

PRELIMINARY DATA

SPI CONTROLLED H-BRIDGE

BLOCK DIAGRAM

IN1

GND

OUT1

OUT2

IN2

DI

EN

DMS

SF/SCK

SS

SI

SO

LOGIC

UNDERVOLTAGE

INTERNAL 5V

SUPPLY

OVERCURRENT

HIGH-SIDE

OVERCURRENT

LOW-SIDE

GATE CONTROL

1

GATE CONTROL

2

OVER

TEMPERATURE

MAXIMUM

CURRENT

LIMITATION

D01AT470A