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.
