Reference Design Note

DNS002 V2.0

Roland Kratz - December 2018

Page 1/8

Copyright © Würth Elektronik eiSos GmbH & Co. KG

1. Introduction

power supply functionalities.

An adjustable output current limit can be set from 0mA to the maximum continuous output current of the module, turning

the module into a constant current source or still acting as a voltage source but with a user defined current limit.

An electronic fuse can be implemented by triggering on the “current limit” LED and pulling the enable pin low to shut down

Output voltage and current can have arbitrary waveforms. An example is imitating the behavior of a car battery voltage

during engine start up to test if the radio is malfunctioning.

Batteries can be charged with a DC current or with a defined charging current waveform, if a digital to analog converter or

a PWM output of a microcontroller is used instead of the potentiometer for current adjustment. Other possibilities include

end of charge voltage as well as super capacitor charging.

High power LEDs can be supplied up to 2.5A.

voltage at a distant point while the output voltage of the module adapts to the voltage drops on the supply lines.

housing until the power supply is defined for the final product.