Reference Design Note

MagI3C Power Modules

DNS005 MagI3C Multi Color LED Driver

DNS005 V1.0

Alexander Zeller

– June 2019

Page 2/20

Copyright © Würth Elektronik eiSos GmbH & Co. KG

2. Specifications

Electrical Specifications

Features



Input Voltage Range:



Input Voltage Transients:



Output Voltage Range:



Output Current:

18V

– 48V

Max. 50V

0V

– VIN

0mA

– 450mA



4 Channel LED Driver (can be extended by connecting daughter

board)



1-26 LEDs with 1,8V each in series per channel (depending on

LED forward voltage)



Intensity of each channel can be adjusted individually (dimming

0-100%)



Color mixing with four channels and RGBW LEDs



Dimming by potentiometer, button or Bluetooth control

(2608011024000)



PWM

dimming

method

-

controlled

by

PIC16F1527

microcontroller



Dimming profiles and colors can be stored



LED Driver: MagI³C Power Module 172 946 001



Conducted and radiated EMI compliant (EN55015)



Good thermal behavior

3. Functional Description

LED panel

User

panel

Power

Board

App

Figure 2: Block Diagram

The reference design consists of three parts: the power board, a control unit and the LED panel. The control unit can be an

App for iOS from the App-Store named

“WEIlluminate” or the user panel 1780051. The user panel allows for manipulation

of the PWM duty cycle using either the potentiometer or the digital buttons connected to the microcontroller. The power

board 1780050 converts the signals from the controlling unit to a PWM signal, which controls four independent channels

with an LED Step Down High Current Module (LDHM) on each channel. The four channels are built identically, each include

an input and output filter to comply to the EMI norm.