DC-DC power module reference design

26 June 2019 Power Electronics / Power Management

MagI³C power modules from Würth Elektronik are DC-DC converters with integrated controller IC, inductors and capacitors. With the new MagI³C power supply reference design, the manufacturer aims to demonstrate the ease with which an adjustable current or voltage source can be built with one of these power modules.

The board is based on the MagI³C VDRM (variable step-down regulator module) to which two additional control loops have been added. The design is aimed at various applications that require an adjustable power source: it generates a constant voltage with an adjustable maximum current on the one hand, or can be set to generate a constant current with adjustable maximum voltage on the other.

In the two operating modes, the output voltage can be set from 0 to 15 V and the current from 0 to 2,5 A; the input voltage range is 7 to 36 V. LEDs on the board indicate the voltage regulation mode, current regulation mode and a missing output voltage. The output voltage and output current are conveniently set via two potentiometers.

The reference design can be used as a driver for white, infrared and ultraviolet power LEDs or as a battery charger for lead, NiCd, NiMH or lithium-ion batteries. It can also be used as a supercapacitor charger and mini laboratory power supply.

For more information contact Jason Page, Würth Elektronik eiSos, +27 71 259 9381, [email protected], www.we-online.com

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