ATA6831C Triple Half-bridge Driver with SPI and PWM DATASHEET Features Supply voltage up to 40V R typically 0.8 at 25C, maximum 1.5 at 150C DSon 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 25kHz for each high-side output controlled by external PWM signal No shoot-through current Very low quiescent current I < 2A in standby mode over total temperature range VS 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 2MHz clock frequency QFN18 package 9215E-AUTO-02/151. Description The Atmel ATA6831C provides fully protected driver interfaces designed in SOI technology. They are used to allow a microcontroller to control up to three different loads in automotive and industrial applications. Each of the three high-side and three low-side drivers is capable of driving currents up to 1.0A. Due to the enhanced PWM signal (up to 25kHz) it is possible to generate a smooth control of, for example, a DC motor without any noise. The drivers are internally connected to form three 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 (protection against conducted interferences, EMC protection and 2-kV ESD protection) gives added value and enhanced quality for exacting requirements of automotive applications. Figure 1-1. Block Diagram O O P P P P P P H L H L H L S S S L H L H L H L S S S S S S R 10 I C D 3 3 2 2 1 1 3 3 2 2 1 1 R VS1 11 Input register Serial interface Ouput register Charge VS2 pump P I O n. n. n. n. n. n. H L H L H L T DI S N V u. u. u. u. u. u. S S S S S S P 4 F H L 3 3 2 2 1 1 CLK 5 CS 3 UV Fault Fault Fault protection DO detector detector detector 9 7 VCC Control PWM logic Power on 6 reset 8 GND 14 Fault Fault Fault GND detector detector detector 17 Thermal protection GND 18 GND 1 2 13 12 16 15 OUT3S OUT3F OUT2S OUT2F OUT1S OUT1F 2 ATA6831C DATASHEET 9215EAUTO02/15