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Motor IC features LIN, PWM interface

Posted: 01 Sep 2011 ?? ?Print Version ?Bookmark and Share

Keywords:motor driver? window watchdog? DC motor?

Elmos Semiconductor AG has introduced the E523.01, an EC motor driver that features a LIN2.1 compatible interface and a PWM interface with data pre-processing. The IC claims to have all the functions needed for designing complete, low-cost systems. The company said the device is ideal for automotive and industrial applications.

In addition to the bridge driver, the E523.01 offers an optional 3.3 or 5V voltage supply (70mA), reset and a configurable window watchdog for external microprocessors. It has various applications that include radiator and blower fans, and gas, hydraulic, oil and water pumps to wiper applications as well as industrial motors (fans, pumps) up to 28V.

The motor driver powers three external NMOS half-bridges for BLDC or DC motors, optionally with three or six PWM input signals. Small loads can be directly controlled. The dead time between the high-side and low-side FETs can be adjusted via SPI interface, enabling the optimized control of the power drivers. Elaborate diagnostic and protective features such as short-circuit detection at all external FETs and voltage, current and temperature monitoring provide for the best possible safety, noted the company.

Due to its very low power loss and the efficient QFN package, the IC can also be used in high-temperature environments. Other characteristics of the E523.01 are the low standby current drain (In addition to the E523.01, the E523.11 is available with just a PWM interface. Both products can be supplied in the QFN44L7 or the QSOP44 package.

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