The LTC3870 is an alternative to Linear Technology’s full-featured controllers and provides the essential functions for multiphase slave designs. This device is a dual output multiphase synchronous step-down slave controller that generates currents up to 240A when paired with a companion master controller by extending the phase count in a single output multiphase application. It operates with true current mode control and is meant to be used with Digital Power System Management controllers, such as the LTC3880 and LTC3883.