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L9929XP Datasheet

  • L9929XP

  • SPI CONTROLLED H-BRIDGE

  • 23頁

  • STMICROELECTRONICS   STMICROELECTRONICS

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L9929
SPI CONTROLLED H-BRIDGE
PRELIMINARY DATA
1
鈻?/div>
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Features
OPERATING SUPPLY VOLTAGE 5V TO 28V
TYPICAL R
DSon
= 150 m鈩?FOR EACH
OUTPUT TRANSISTOR (AT 25擄C)
CONTINOUS DC LOAD CURRENT 5A
(T
case
< 100 擄C)
OUTPUT CURRENT LIMITATION AT TYP.
8.6A
SHORT CIRCUIT SHUT DOWN FOR OUTPUT
CURRENTS OVER TYP. 10.6A
LOGIC- INPUTS TTL/CMOS-COMPATIBLE
OPERATING-FREQUENCY UP TO 30 kHz
OVER TEMPERATURE PROTECTION
SHORT CIRCUIT PROTECTION
UNDERVOLTAGE DISABLE FUNCTION
DIAGNOSTIC BY SPI OR STATUS-FLAG
(CONFIGURABLE)
ENABLE AND DISABLE INPUT
SO20 POWER PACKAGE
Figure 1. Package
鈻?/div>
PowerSO20
PowerSSO24
鈻?/div>
鈻?/div>
Table 1. Order Codes
Part Number
L9929
L9929XP
Package
PowerSO20
PowerSSO24
鈻?/div>
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鈻?/div>
鈻?/div>
鈻?/div>
鈻?/div>
The H-Bridge is protected against over tempera-
ture and short circuits and has an under voltage
lockout for all the supply voltages "V
S
" (Main DC
power supply). All malfunctions cause the output
stages to go tristate.
The H-Bridge contains integrated free-wheel di-
odes. In case of free-wheeling condition, the low
side transistor 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.
鈻?/div>
鈻?/div>
2
Description
The L9929 is an SPI controlled H-Bridge, de-
signed for the control of DC and stepper motors in
safety critical applications and under extreme en-
vironmental conditions.
Figure 2. Block Diagram
V
S
UNDERVOLTAGE
V
S
INTERNAL 5V
SUPPLY
IN1
IN2
GATE CONTROL
1
GATE CONTROL
2
LOGIC
DMS
SF/SCK
SS
SI
SO
MAXIMUM
CURRENT
LIMITATION
GND
D01AT470A
OVERCURRENT
HIGH-SIDE
OUT1
DI
EN
OUT2
OVER
TEMPERATURE
OVERCURRENT
LOW-SIDE
May 2005
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
Rev. 2
1/23

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