DC2268A-E

DC2268A-E demonstration circuit is a high efficiency, high density, dual 18A, switch mode step-down power supply on a compact 1.5' × 1.2' PCB. It features the LTM4630-1 μModule regulator. The input voltage is from 4.5V to 15V. The output voltage is programmable from 0.6V to 1.8V. DC2268A-E 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 resistor jumper (R1/R2) selects pulse-skipping mode for noise sensitive applications or Burst Mode® in less noise sensitive applications. Two outputs can be connected in parallel for a single 36A output solution with optional jumper resistors.

• 500kHz default operating frequency
• The board allows the user to program how its output ramps up and down through the TRACK/SS pin
• Remote output voltage sensing is available for improved output voltage regulation at the load point
• An optional input inductor L1 reduces the EMI noise for noise sensitive applications
• DC2268A can be easily inserted to an edge connector for testing and debugging
• Ideal for use in many high-density point-of-load regulation applications