E523.52: Maximum 72V – integrated microcontroller
With the E523.52 IC, Elmos is presenting a fully integrated motor controller for brushless DC (BLDC) motors. The E532.52 can be operated with a supply voltage of up to 72 V. It integrates a powerful 16-bit microcontroller with special motor controller hardware support. The IC controls 3 NMOS half bridges for motor powers up to approx. 1000 W.
The E523.52 features an integrated DC/DC buck converter to generate the gate driver voltage and to supply the integrated controller. The DC/DC buck converter is designed for voltages of 11 V/100 mA for gate drivers and other loads. The internal 3.3 V regulator can also supply a microcontroller with up to 20 mA. An external transistor can be connected for higher loads. Furthermore, this chip also features various monitoring and diagnostics functions for the MOSFETs. The E523.52 is certified according to AEC-Q100.
Potential applications include BLDC motors, applications in 48 V vehicle electrical systems, industrial applications in the 24 V to 72 V range, commercial vehicles or 48 V telecommunications applications.
Elmos offers free application software for block and sinus commutation and space-vector modulation. The offering is rounded out by a reference board with power stage and convenient PC environment.
 |
| E523.52 Motor Control Demonstration Board. |
The E523.52 is distinguished by its high flexibility: The compact housing (QFN36L7) requires little installation space. The 3 half bridges (3 high side and 3 low side gate drivers) are controlled directly via a high voltage input, a digital RUN pin and 6 direct digital inputs. The 6 PWM inputs are freely configurable.
Thanks to internal temperature sensing and a housing designed for efficient cooling, the ambient temperature range is –40° to 125 °C. Two outputs provide information on over and under voltage conditions and overheating.
