Ming-Chuan YenDan ChenSheng-Fu HsiaoYung-Jen ChenDAN CHEN2018-09-102018-09-102014-09http://scholars.lib.ntu.edu.tw/handle/123456789/388702For recent energy-saving computer power converter products, it's required to provide a very tightly regulated voltage under very stringent current load change conditions. In this paper, this issue is dealt with for a current-mode constant on-time buck converter. An issue about beat frequency effects analysis is first given using modulation spectrum theory and small-signal frequency-domain model. This analysis provides insight into the complexity of the issue. Then a time-domain approach is used to derive converter output voltage ripple in terms of converter load current excitation. The results are verified in experiments. A mathematical solution is established for estimating the worst-case output ripple voltage due to repetitive large-step AC load current excitation of wide-range frequencies. © 2014 IEEE.Adaptive voltage position (AVP); Constant on-time control; Current mode control; Output voltage ripple; Voltage regulator (VR)[SDGs]SDG7Energy conservation; Frequency domain analysis; Time domain analysis; Voltage regulators; Adaptive voltage; Current Mode Control; Mathematical solutions; Modulation spectrum; On-time controls; Output voltage ripple; Signal frequencies; Time-domain approach; DC-DC convertersconference paper10.1109/ECCE.2014.69536662-s2.0-84934342904