1780050, REFERENCE DESIGN BOARD, LED DRIVER
MagI³C multi colour 4 channel LED driver reference design demonstrates how four MagI³C LED step down high current modules (172946001) can be used to control the intensity and colour of 4 individual LED strings. The controlling can be done via hardware or software. An app for IOS was developed to control the reference design using Bluetooth. A user panel (1780051) was designed to adjust the intensity of each channel. The board can be used for horticulture, mixing of different white colour temperatures, mixing of RGBW LED combinations (red, green, blue, white) or just to change the intensity of one type of LED. This board has a size of 115x115mm and four layers of copper for heat dissipation. The board includes an EMI filter in order to comply with the limits of the EN55015 conducted lighting norm and the CISPR32 norm for radiated EMI (tested with 1m output cable length) even while dimming the LED strings.
• 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%)• Dimming by potentiometer, button or Bluetooth control (2608011024000)• PWM dimming method controlled by PIC16F1527 microcontroller• LED driver: MagI³C power module 172 946 001• Conducted and radiated EMI compliant (EN55015)• Good thermal behaviour• Input voltage range (VIN) from 18V to 48V, output voltage range from 0V to VIN• Output current range from 0mA to 450mA
