DC1043A-A

DC1043A-A demonstration circuit features the LTM4601EV, high efficiency, high density switch mode step-down power modules. The input voltage ranges from 5.0V to 20V. The output voltage is programmable from 0.6V to 3.3V. The rated load current is 20A, while de-rating is necessary for certain VIN, VOUT, and thermal conditions. 24A load current can be achieved by applying forced airflow convection or attaching heatsinks. Host module U1 provides differential remote sensing to accurately regulate output voltage independent of load current. Integrated input and output filters enable a simple PCB layout. Only bulk input and output capacitors are needed externally. The DC1043A-A has on-board 180 degree interleaving clock generator. The LTM4601 allows the user to program output ramp-up and ramp down through the TRACK/SS pin. The output can be set to coincidentally or ratiometrically track with another supply’s output.

• 750kHz default operating frequency
• 83.2% efficiency (VIN =12V, VOUT =1.5V, IOUT =20A )