Demonstration circuit 1780A-B features PolyPhase® design using the LTM4620EV, the high efficiency, high density, dual 13A, switch mode step-down power module regulator. The input voltage is from 4.5V to 16V. The output voltage is jumper selectable from 1.0V to 2.5V. DC1780A-B can deliver nominal 75A output current with 3× LTM4620s in parallel. Output current derating is necessary for certain VIN, VOUT, and thermal conditions.