Demonstration circuit 664 is a high efficiency 2-phase dual step-down DC/DC converter with 2.75V to 9.8V input range. It has two outputs: 2.5V/2.5A and 1.8V/3A. The demo board features the constant frequency current mode LTC®3737EUF controller. The MOSFET VDS sensing eliminates the need for sense resistors and improves efficiency. Out of phase operation significantly reduces input ripple current and noise as well as the input capacitor size.