Efficient Design Techniques for On-Chip Robust DC-DC Converters

The ever increasing demand for complex and miniaturized electronic systems, such as mobile electronic devices and medical implantable devices, has led to an increasing demand for robust and efficient DC-DC converters, which are used to change the power supply levels to the levels required by each of the system blocks. Our group is investigating efficient design techniques for on-chip DC-DC robust converters. We are currently working on improving the voltage regulation capability, which is important to provide a steady fluctuation-less output voltage, thus enhancing the robustness of the DC-DC converter. Our research considers the various aspects that govern the control mechanism and design a comprehensive control model for the DC-DC converter, which can improve its voltage regulation efficiency and thereby enhance its robustness. We perform our experiments on two different types of DC-DC converters, namely, buck converter and boost converter. While a buck converter is used to step-down (or reduce) the initial supply voltage, the boost converter is used to step-up (or increase) the initial supply voltage.

Fig. : Buck Converter (voltage step-down) Fig. : Boost Converter (voltage step-up)