ATA6832 ATMEL Corporation, ATA6832 Datasheet

ATA6832

Manufacturer Part Number

ATA6832

Description

High Temperature Triple Half-bridge Driver with SPI and PWM

Manufacturer

ATMEL Corporation

Datasheet

1.ATA6832.pdf (16 pages)

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Features

•

1. Description

The ATA6832 is a fully protected driver IC specially designed for high temperature

applications. In mechatronic solutions, for example turbo charger or exhaust gas recir-

culation systems, many flaps have to be controlled by DC motor driver ICs which are

located very close to the hot engine or actuator where ambient temperatures up to

150°C are usual. Due to the advantages of SOI technology junction temperatures up

to 200°C are allowed. This enables new cost effective board design possibilities to

achieve complex mechatronic solutions.

The ATA6832 is a triple half-bridge driver to control up to 3 different loads by a micro-

controller in automotive 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 internally 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 Output Controlled by External PWM Signal

No Shoot-through Current

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 1.8 at 200°C

High

Temperature

Triple

Half-bridge

Driver with SPI

and PWM

ATA6832

4951A–AUTO–08/06

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