Atmel ATA6824
The ATA6824 is designed for high temperature mechatronic applications, for example turbo chargers, where the electronic is mounted very close to the hot engine. The IC is used to drive a continuous current motor in a full H-bridge configuration. The PWM control is performed by the low-side switch; the high-side switch is permanently on in the driving phase.FEATURES
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● 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 1.
DESCRIPTION
In such harsch environments the ICs have to withstand temperatures up to 150° C ambient which results in junction temperatures up to 200° C. 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.