Voila ce que j'ai acheté, pour moins de 2 euros. Input voltage: 3.2-40V. Output Voltage: 1.5-35V (adjustable) ,input must least high 1.5V than output. Output current: rated current 2A, maximum 3A (need to add heat sink), if the output power greater than 15W, combined heat sink is proposed. Conversio...