The EC motor driver E910.87 is now available from Gleichmann Electronics. Thanks to its particularly flexible configuration options and diverse protection mechanisms, the device is usable in a wide range of automotive and industrial applications. With the gate driver ICs for six NMOS FETs, developed by ELMOS, the individual driver outputs can be controlled with up to 60 kHz and the driver currents are adjustable from 40 mA to 300 mA. Control of the EC motor itself takes place via the power FETs of the 3 half-bridges (B6).
The charge pump applied allows duty factors for the high-side drivers of up to 100%. The motor control interface between microcontroller and motor driver IC consists of six PWMs for driving the six power transistors. Particularly for use with low performance microcontrollers, the E910.87 can also be installed so that three PWMs are sufficient for driving the power stage.
Further characteristics of the device include an integrated window watchdog, integrated free run comparators and motor current measurement with programmable amplification. Features such as amplification factor of current limitation, overcurrent threshold and error interrupts can be adjusted and configured in a simple and direct manner via the integrated SPI interface.
The diverse protection functions include protection against phase and gate short-circuits, cross-current protection, over-voltage and under-voltage protection for high-side and low-side driver supply, gate-source voltage limitation of high-side drivers and an over-temperature warning.
The EC motor driver E910.87 is designed for an extended temperature range of -40°C to +125°C and comes in a small 7×7 mm, 44-pin QFN package. Samples and evaluation boards are available from Gleichmann Electronics.
Gleichmann & Co. Electronics GmbH
Founded in 1979, Gleichmann & Co. Electronics GmbH, in the same company group with MSC Vertriebs GmbH, has established itself as one of the leading pan-European distributors of electronic assemblies and components. One of the reasons for the high acceptance by customers and suppliers is the company’s early focus on comparatively few, highly sophisticated products such as microcontrollers, programmable logic devices, displays and customer specific power supplies. From this, the resulting in-depth technical know-how of our sales engineers and field application engineers today enables us, if required by the customer, even implementation of complete new designs right up to the finished product. With two of its own ASIC design centers, the Gleichmann Electronics Research laboratory and one of the largest and most modern programming centers in Europe, Gleichmann & Co Electronics takes a leading role in terms of service and customer support.
Elmos Semiconductor AG
For many years, ELMOS is a leading developer and producer of customer-specific system solutions for the automotive sector as well as for consumer and industrial products. Based on the modular high-voltage CMOS technology, ELMOS offers a variety of analog, mixed-signal circuit elements such as voltage regulators, analog/digital converters, power drivers and non-volatile memory. In addition, special silicon-based microsystems based on MEMS sensor systems and dedicated package solutions, both developed and manufactured within the ELMOS Group, are offered. About 90 percent of sales are generated with ICs for automotive electronics. ELMOS is listed on the Prime Standard of the German Stock Exchange.