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Elmos Launches BLDC Motor Driver for 48V Board Net

3-fold Half-Bridge Driver IC E523.50 from Elmos for BLDC Applications

Elmos introduces with the E523.50, a threefold 72V half-bridge driver for brushless DC (BLDC) motors. Feasible are automotive applications with 12/24V- (Trucks) and 48V board net power supply as well as industrial applications with 24 to 60V power supplies.


The IC complies with AEC-Q100, Grade 0 (150°C) requirements.

The digital RUN pin and six digital inputs control the three half-bridge gate drivers (three high side and three low side gate drivers).

The IC is configurable for six direct control inputs or three enable and three PWM (pulse width modulation) inputs. In the latter case, the dead time is generated automatically and can be adjusted using an external resistor.

The component has an integrated DC/DC step-down (buck) converter, which provides the drivers and other loads with a gate voltage of 11V/100mA. The internal 3.3V control unit is able to supply the microcontroller with up to 20mA. An external boost transistor can be connected for higher loads.

Among the component, characteristics are comprehensive diagnostics and protective features. Two error outputs show any over-current, low voltage and excessive temperature rise. The excellent heat transfer properties of the exposed-pad QFN housing make it possible to operate the IC close to its maximum permissible temperature of up to 170°C.

Further info: [email protected] mentioning ‘E523.50’ in the reference line.


Niloy Banerjee

A generic movie-buff, passionate and professional with print journalism, serving editorial verticals on Technical and B2B segments, crude rover and writer on business happenings, spare time playing physical and digital forms of games; a love with philosophy is perennial as trying to archive pebbles from the ocean of literature. Lastly, a connoisseur in making and eating palatable cuisines.

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