L9230 Datasheet, PDF (1/25 Pages) STMicroelectronics – SPI CONTROLLED H-BRIDGE

L9230
s OPERATING SUPPLY VOLTAGE 5V TO 28V
s TYPICAL R_DSon = 150 mΩ FOR EACH
OUTPUT TRANSISTOR (AT 25°C)
s CONTINOUS DC LOAD CURRENT 5A
(T_case < 100 °C)
s OUTPUT CURRENT LIMITATION AT TYP. 6A
s SHORT CIRCUIT SHUT DOWN FOR OUTPUT
CURRENTS OVER 8A
s LOGIC- INPUTS TTL/CMOS-COMPATIBLE
s OPERATING-FREQUENCY UP TO 30 kHz
s OVER TEMPERATURE PROTECTION
s SHORT CIRCUIT PROTECTION
s UNDERVOLTAGE DISABLE FUNCTION
s DIAGNOSTIC BY SPI OR STATUS-FLAG
(CONFIGURABLE)
s ENABLE AND DISABLE INPUT
s 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.
SPI CONTROLLED H-BRIDGE
PRELIMINARY DATA
PowerSO20
BARE-DIE
ORDERING NUMBERS:
L9230
L9230-DIE1
The H-Bridge is protected against over temperature
and short circuits and has an under voltage lockout
for all the supply voltages ”V_S” (Main DC power sup-
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.
BLOCK DIAGRAM
V_S
UNDERVOLTAGE
V_S
INTERNAL 5V
SUPPLY
IN1
IN2
DI
EN
DMS
SF/SCK
SS
SI
SO
LOGIC
GATE CONTROL
1
GATE CONTROL
2
OVER
TEMPERATURE
MAXIMUM
CURRENT
LIMITATION
OVERCURRENT
HIGH-SIDE
OVERCURRENT
LOW-SIDE
OUT1
OUT2
GND
D01AT470A
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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