Triple Half-bridge DMOS Output Driver with
Serial Input and PWM Control ATA6831/ATA6832
1.
Introduction
ATA6831 and ATA6832 are fully protected universal driver interfaces designed in
SMARTIS1 technology. They are used to control up to 3 different loads by a microcon-
troller in automotive and industrial applications. The ATA6831 is housed in a QFN18
4
×
4 mm package.
Each of the 3 high-side and 3 low-side drivers is capable of driving currents of up to
1A. The drivers are internally connected to form 3 half-bridges and can be controlled
separately from a standard serial peripheral data interface. Therefore, all kinds of
loads such as bulbs, resistors, capacitors, and inductors can be combined. The IC
design particularly supports the application of H-bridges to drive DC motors. The
PWM feature allows a smooth operation of DC motors and BLDC motor control. Pro-
tection against short-circuit conditions, overtemperature, and undervoltage is
implemented. Various diagnosis functions and a very low quiescent current in standby
mode open a wide range of applications. Automotive qualification referring to con-
ducted interferences, EMC, and 2 kV ESD protection gives added value and
enhanced quality for demanding up-market applications.
ATA6831 is designed to operate on junction temperatures up to 150°C. ATA6832 is
designed for high temperature applications on junction temperatures up to 200°C If
not explicit mentioned, all comments in this document for ATA6831 are valid for
ATA6832 as well.
ATA6831/
ATA6832
Driver ICs
Application Note
9120A–AUTO–01/08
