ATA6824 ATMEL Corporation, ATA6824 Datasheet

ATA6824

Manufacturer Part Number

ATA6824

Description

High Temperature H-bridge Motor Driver

Manufacturer

ATMEL Corporation

Datasheet

1.ATA6824.pdf (22 pages)

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Features

•

1. Description

The ATA6824 is designed for high temperature mechatronic applications, for example

turbo chargers, where the electronic is mounted very close to the hot engine. In such

harsch environments the ICs have to withstand temperatures up to 150 C ambient

which results in junction temperatures up to 200 C. The IC is used to drive a continu-

ous current motor in a full H-bridge configuration. An external microcontroller controls

the driving function of the IC by providing a PWM signal and a direction signal and

allows the use of the IC in a motor-control application. The PWM control is performed

by the low-side switch; the high-side switch is permanently on in the driving phase.

The VMODE configuration pin can be set to 5V or 3.3V mode (for regulator and inter-

face high level). The window watchdog has a programmable time, programmable by

choosing a certain value of the external watchdog resistor RWD, internally trimmed to

an accuracy of 10%. To communicate with a host controller there is a HV Serial Inter-

face integrated.

PWM and Direction-controlled Driving of Four Externally-powered NMOS Transistors

High Temperature Capability up to 200 C Junction

A Programmable Dead Time Is Included to Avoid Peak Currents Within the H-bridge

Integrated Charge Pump to Provide Gate Voltages for High-side Drivers and to Supply

the Gate of the External Battery Reverse Protection NMOS

5V/3.3V Regulator and Current Limitation Function

Reset Derived From 5V/3.3V Regulator Output Voltage

A Programmable Window Watchdog

Battery Overvoltage Protection and Battery Undervoltage Management

Overtemperature Warning and Protection (Shutdown)

High Voltage Serial Interface for Communication

QFN32 Package

High

Temperature

H-bridge Motor

Driver

ATA6824

Preliminary

4931C–AUTO–09/06

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