ATA6831 ATMEL Corporation, ATA6831 Datasheet

ATA6831

Manufacturer Part Number

ATA6831

Description

Triple Half-bridge Driver with SPI and PWM

Manufacturer

ATMEL Corporation

Datasheet

1.ATA6831.pdf (17 pages)

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Features

•

1. Description

The ATA6831 provides fully protected driver interfaces designed in SOI technology.

They are used to allow a microcontroller to control up to 3 different loads in automo-

tive and industrial applications.

Each of the 3 high-side and 3 low-side drivers is capable of driving currents up to

1.0A. Due to the enhanced PWM signal (up to 25 kHz) it is possible to generate a

smooth control of, for example, a DC motor without any noise. The drivers are inter-

nally connected to form 3 half-bridges and can be controlled separately from a

standard serial data interface, enabling all kinds of loads, such as bulbs, resistors,

capacitors and inductors, to be combined. The IC design especially supports the

application of H-bridges to drive DC motors.

Protection is guaranteed with respect to short-circuit conditions, overtemperature and

undervoltage. Various diagnostic functions and a very low quiescent current in

standby mode enable a wide range of applications. Automotive qualification (protec-

tion against conducted interferences, EMC protection and 2-kV ESD protection) gives

added value and enhanced quality for exacting requirements of automotive

applications.

Supply Voltage up to 40V

Up to 1.0A Output Current

Three Half-bridge Outputs Formed by Three High-side and Three Low-side Drivers

Capable of Switching Loads such as DC Motors, Bulbs, Resistors, Capacitors, and

Inductors

PWM Capability up to 25 kHz for Each High-side Output Controlled by External PWM

Signal

No Shoot-through Current

Very Low Quiescent Current I

Outputs Short-circuit Protected

Selective Overtemperature Protection for Each Switch and Overtemperature

Prewarning

Undervoltage Protection

Various Diagnostic Functions such as Shorted Output, Open Load, Overtemperature

and Power-supply Fail Detection

Serial Data Interface, Daisy Chain Capable, up to 2 MHz Clock Frequency

QFN18 Package

DSon

Typically 0.8 at 25°C, Maximum 1.5 at 150°C

< 5 µA in Standby Mode over Total Temperature Range

Triple

Half-bridge

Driver with SPI

and PWM

ATA6831

4908D–AUTO–09/06

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