DFR0379 20W DC-DC Buck Converter DFRobot DFR0379 20W DC-DC Buck Converter with Digital Display offers 20W output power and supports self-calibration to provide high-precision voltage. This DC-DC buck converter sports a digital display that displays the output. The 20W DC-DC buck converter uses the LM2596 voltage regulator. The LM2596 regulator is a 3A step-down voltage regulator that offers ±0.05V accuracy and operates at 0V to 40V input DC voltage range. The DFR0379 20W DC-DC buck converter with a digital display supports a self-calibration function to provide high precision voltage.