TWO-STAGE VOLTAGE REGULATOR FED VOLTAGE CONTROL USING PIC MICRO CONTROLLER

Abstract

For today's laptops, computer peripherals, and light load efficiency, improving battery life is a major task. High-end server applications are increasingly focusing on the dual step 48V into 12V into 1.8V VRM (Voltage Regulator Module) configuration. Because it efficiently delivers the isolated 12V output, the Inductor-Inductor-Capacitor (LLC) dc-dc converters are the recommended option of the initial step of conversion. The multi-phase Buck converter next converts it to 1.8V. Because the switching loss is lower, this study offers a high-efficiency half-bridge inverter LC resonant circuit, followed by a full-wave diode rectifier. Because of the LLC's reduced core loss and the multi-phase Buck converter's lower switching loss, as well as the simplified converter architecture's reduced number of switches, total light load efficiency will improve significantly. A step-down transformer is then used to lower the inverter voltage. Experiments on the two-stage VRM reveal a fast transient response as well as a light load and an improved efficiency, high compactness 48V into 12V into 1.8V Inductor Inductor Capacitor is built. The outcomes of the experiment reveal the benefits of the approaches proposed.