L9929 datasheet(1/23 Pages) STMICROELECTRONICS

部品番号	L9929

部品情報	SPI CONTROLLED H-BRIDGE

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L9929

May 2005

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

1

Features

■ OPERATING SUPPLY VOLTAGE 5V TO 28V

■ TYPICAL RDSon = 150 m

Ω FOR EACH

OUTPUT TRANSISTOR (AT 25°C)

■ CONTINOUS DC LOAD CURRENT 5A

(Tcase < 100 °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

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.

The H-Bridge is protected against over tempera-

ture and short circuits and has an under voltage

lockout for all the supply voltages "VS" (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.

Figure 2. Block Diagram

IN1

VS

GND

OUT1

OUT2

IN2

DI

EN

DMS

SF/SCK

SS

SI

SO

LOGIC

UNDERVOLTAGE

VS

INTERNAL 5V

SUPPLY

OVERCURRENT

HIGH-SIDE

OVERCURRENT

LOW-SIDE

GATE CONTROL

1

GATE CONTROL

2

OVER

TEMPERATURE

MAXIMUM

CURRENT

LIMITATION

D01AT470A

PRELIMINARY DATA

SPI CONTROLLED H-BRIDGE

Rev. 2

Figure 1. Package

Table 1. Order Codes

Part Number

Package

L9929

PowerSO20

L9929XP

PowerSSO24

PowerSO20

PowerSSO24

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