Full Bridge Phase Shifted On-Chip Dc-Dc Converter For Point-Of-Load Voltage Regulation

ABSTRACT: DC-DC converter is important in portable electronic devices which are supplied with power from batteries primarily. Such electronic devices often contain several sub-circuits, in which switched DC to DC converters offer a multiple voltage levels from a partially lowered battery voltage thereby saving space instead of using multiple batteries. An active filter based on-chip DC-DC voltage converter provides distributed multiple local power supplies across an integrated circuit while maintaining high current efficiency within a small area. The area occupied by the circuit is small because no inductor or capacitor is required than other voltage regulators. The circuit is appropriate for noise sensitive portions of an integrated circuit. Digital current mode control in a full bridge phase shifted DC-DC converter is introduced. So that, the digital current controller performs gain adjustments scheme to achieve fast dynamic response and a current sampling scheme to avoid switching noise and spike in DC-DC converter. The MATLAB tool is used for the simulation of the voltage regulator