Elmos: Fast BLDC motor controller with 16-bit CPU

Elmos E523.06

E523.06: Triple Half-Bridge Driver with Single Shunt FOC Operation

The Elmos-IC E523.06 is a BLDC motor system-in-a-chip, consisting of a gate driver for the 12 V vehicle electrical system combined with a powerful 16-bit CPU core. It controls up to 3 NMOS half bridges of BLDC, DC motors or other loads. The CPU architecture and motor driver peripherals are optimized for the single-shunt FOC (Field Oriented Control) method.

Elmos - E523.06

The IC calculates the motor position and the commutation times without additional Hall sensors. The only measuring element in the external wiring is a shunt. The device contains circuits that protect against overcurrent (the threshold is infinitely adjustable), over temperature, over and under voltages and short circuits (programmable thresholds for each FET).

In addition to the cost-effective design of the target application, the IC supports end-of-line programming via JTAG or high-speed LIN. In-vehicle updates can be carried out with the bootloader.

Possible applications include: radiator fans, air conditioning fans and pumps (fuel, hydraulics, oil or water).

The 16-bit CPU in conjunction with coprocessors for ADC tasking and PWM generation ensures high system performance. The closed control loop is processed so fast by this hardware acceleration that the calculation of the complete motor model within a PWM cycle becomes possible. An integrated high-bandwidth current sense amplifier handles the processing of the current values. All features optimize system performance, system reliability, power consumption, and development time.

Communication in the automotive network can be realized via an integrated LIN transceiver or via a PWM interface.

The IC is qualified to AEC Q-100 Grade 0 up to 150 ° C.

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