Abstract
This thesis presents an integrated DC-DC buck converter using the synthetic ripple hysteresis control scheme with a fast transient path to define the boundary of hysteresis band. The hysteresis band and switching frequency depend on load current changes; therefore, it accelerates regulation and reduces overshoot. The present work requires no external compensation capacitors and can be implemented with integrated technology for on-chip applications. The whole chip is designed and simulated with TSMC 0.35μm 2P4M fabrication process data. The input supply voltage range of this work is 2.7V-4.2V, and the output voltage is 2V. The chip area is 1914μm × 2096μm. Full chip simulation results indicated output voltage recovery time is shortened within 10µs under load current condition between 100mA to 500mA, and the maximum conversion efficiency is 85.74%.