The device features comprehensive safety and diagnosis functions such as, for example, motor stalling detection, which protects the mechanical components against overload by switching off automatically. Furthermore, an extensive short-circuit protection - including detection, limitation and diagnosis - ensures maximum safety even when driving inductive loads. Each output is monitored independently of each other for short circuits or interruption. Overvoltage and undervoltage switch-off and temperature monitoring complete the extensive safety functions of the E520.01.
For the configuration, drive and diagnosis of stepper motors, the stepper pattern desired by the customer - full step, half step or wave drive - must simply be predetermined via the integrated SPI interface. All other functions are provided automatically by the E520.01.
For driving LEDs or relays, the E520.01 has 3 pre-settable PWM generators whose frequencies are 200 Hz or 25 kHz. The duty cycle allows for linear or logarithmic configuration.
If only 8 channels are required, the E520.03 can be used. The E520.01 (12-fold low side driver) is supplied in a QFN32L5 package, the E520.03 (8-fold low side driver) in a QFN20L5 package. The two devices have the exact same electrical characteristics.
For more information, samples and evaluation boards of the E520.01 and E520.03, please send an email to elmos@msc-ge.com.
ELMOS Semiconductor AG
For many years, ELMOS Semiconductor 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. More information can be found at: www.elmos.de