The SC2447 is a versatile high-frequency dual phase PWM step-down controller optimized for Philips and Renesas DrMOSTM. Both phases are capable of sourcing or sinking load currents, making the SC2447 suitable for networking system power and DDR applications. The SC2447 employs fixed frequency, continuous-conduction peak current-mode control for easy compensation and fast transient response. The SC2447 can be used to generate two independent outputs (up to 30A per output) or a single 60A output with shared phase current. The PWM signals are 180 out of phase to minimize input/output ripple. Either inductor DC resistance or precision sense resistor can be used for current-mode control. Inductor DC resistance sensing has the advantage of being lossless. Each phase has individual closed-loop soft-start and overload shutdown timer. The SC2447 powers up neatly with pre-biased output. It has tri-state shutdown and hiccup overload protection. In two-phase single-output configuration, the master timer controls the soft-start and overload shutdown functions. The SC2447 is in a lead-free, WEEE and RoHS compliant, TSSOP-28 package.