DC-DC converter for car [12V / 13.8V....24V, 2A max, adjustable]

In the car, to power a laptop, a medium power audio amplifier that is powered at more than 12V or whose device requires a supply voltage

between 13.8V and 24V it is recommended to use a DC-DC converter that connects to lighter socket.

The maximum limited current is 2A between 13.8V and 16V and decreases approximately with a linear slope (from 0.1A / 2V) to 1.2A at 24V. The recommended limits for continuous operation are consider half. At the base of the circuit is MC34063. The output voltage is adjusted from RV1. The converter is protected at the input and output with diodes. For 60uH coil, if you don't have,

a standard inductor can be purchased, but rewinding is required (for 1mm wire we have 32 turns). The MPT3055E MOSFET transistor can be replaced with IRF530 / IRF630 / IRF740 / IRF840. MBR735 diodes can be replaced with BYW29. All capacitors should be Low ESR.

Have fun with it !