The ADP1050 is an advanced digital controller with a PMBus? interface targeting high density， high efficiency dc-to-dc power conversion. This controller implements voltage mode control with high speed， input voltage feedforward operation for enhanced transient and noise performance. The ADP1050 has four programmable pulse-width modulation （PWM） outputs capable of controlling most high efficiency power supply topologies，with the added control of synchronous rectification （SR）。 The ADP1050 implements several features to enable a robust system of parallel and redundant operation for customers who require high availability. The device provides synchronization， prebias startup， and conditional overvoltage techniques to identify and safely shut down an erroneous power supply in parallel operation mode. The ADP1050 is based on flexible state machine architecture and is programmed using an intuitive graphical user interface （GUI）。 The easy to use GUI reduces design cycle time and results in a robust， hardware coded system loaded into the builtin EEPROM. The small size （4 mm × 4 mm） of the LFCSP package makes the ADP1050 ideal for ultracompact， isolated dc-to-dc power module or embedded power designs.