DC2157A

DC2157A demonstration circuit features the LTM4630EY-1, high-efficiency, high-density, dual 18A, switch-mode step-down power module regulator with ±0.8% total DC output accuracy. The input voltage is from 4.5V to 15V. The output voltage is programmable from 0.6V to 1.8V. DC2157A can deliver up to 18A maximum on each channel. With the help of external compensation, ±3% transient accuracy can be achieved with 25% load step. The board operates in continuous conduction mode in heavy load conditions. For high efficiency at low load currents, the MODE jumper selects pulse-skipping mode for noise-sensitive applications or Burst Mode® operation in less noise-sensitive applications. Two outputs can be connected in parallel for a single 36A output solution with optional jumper resistors. The board allows the user to program how its output ramps up and down through the TRACK/ SS pin. The output can be set up to either coincidentally or ratiometrically track with another supply’s output.

• 500kHz default operating frequency