E910.69 universal driver IC simplifies control of brushless and DC motors

For use in diverse automotive and industrial applications:
Stutensee (Germany) – Gleichmann Electronics announces immediate availability of Elmos’ E910.69 motor control IC together with an evaluation board. The E910.69 was specifically designed by Elmos for the operation of brushless motors as well as the full bridge and half bridge control of DC motors.

Up to three external NMOS half bridge applications can be controlled with the IC, whereby each of the three half bridges of the E910.69 is controlled by a separate logic input.

The driver outputs for control of six external n-channel power transistors are provided by PWM signals up to 20 kHz. The external power transistors are protected against short circuit by adjustable thresholds and monitoring the drain-source voltage and protection against overcurrent by current measuring on external shunt resistors. The slew rate of the MOSFET can be adjusted by programming the gate drive currents. Via a serial interface (SPI), which also serves for supply voltage monitoring, the drivers can be parameterized and diagnostic data can be read out.

Control of the high-side transistors takes place with help of a bootstrap circuit. In case of low supply voltage, a charge pump provides a higher charging voltage for the external bootstrap capacitors and for driving the low-side transistors.

Due to the wide operating voltage range from 7 V to 60 V, the E910.69 can be used in 12 V, 24 V and 42 V vehicle power systems and in diverse 24 V industrial power grid. Typical fields of application are turbo chargers, control valves, battery powered drills/screwdrivers, common power tools, servo drives, high-efficiency fan drives, electric servo-assisted steering and automatic gearboxes.