APPLICATION NOTE 3244

3mm-Tall, Dual-Phase, Step-Down, DC-DC Converter Delivers 1.6V at 20A from 12V for Mobile Processor Cores


Abstract: A dual-output, synchronous buck controller reduces component height in this single output design by splitting the current into two interleaved phases. The dual-phase design reduces the required input filter capacitance and allows each inductor to be shorter than would be possible in a single-phase design. The MAX8537 controller incorporates this design into a 3mm-high circuit that delivers 1.6V at 20A from 12V.