Rainbow Electronics ATA6827 - Manual

Features
• Supply Voltage up to 40V
• R
DSon
Typically 0.8
Ω
at 25°C, Maximum 1.8
Ω
at 200°C
• Up to 1.0A Output Current
• Three Half-bridge Outputs Formed by Three High-side and Three Low-side Drivers
• Capable to Switch all Kinds of Loads Such as DC Motors, Bulbs, Resistors, Capacitors
and Inductors
• No Shoot-through Current
• Outputs Short-circuit Protected
• 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
1. Description
The ATA6827 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 ATA6827 is a fully protected Triple Half-Bridge to control up to 3 different loads by
a microcontroller in automotive and industrial applications. Each of the 3 high-side and
3 low-side drivers is capable to drive currents up to 1.0A. The drivers are internally
connected to form 3 half-bridges and can be controlled separately from a standard
serial data interface. Therefore, all kinds of loads such as bulbs, resistors, capacitors
and inductors can be combined. The IC design especially supports the application of
H-bridges to drive DC motors.
Protection is guaranteed regarding short-circuit conditions, overtemperature and und-
ervoltage. Various diagnostic functions and a very low quiescent current in standby
mode opens a wide range of applications. Automotive qualification gives added value
and enhanced quality for exacting requirements of automotive applications.
High
Temperature
Triple
Half-bridge
Driver with
Serial Input
Control
ATA6827
Preliminary
4912C–AUTO–10/06