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Soft-Start Circuit Based on Switched-Capacitor for DC-DC Switching Regulator
Zhenpeng BIAN Ruohe YAO Fei LUO
IEICE TRANSACTIONS on Electronics
Publication Date: 2012/10/01
Online ISSN: 1745-1353
Print ISSN: 0916-8516
Type of Manuscript: BRIEF PAPER
Category: Electronic Circuits
soft-start, DC-DC switching regulator, switched-capacitor, inrush current, overshoot voltage,
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An on-chip soft-start circuit based on a switched-capacitor for DC-DC switching regulator is presented. A ramp-voltage, which is generated by a switched-capacitor, is used to make pulse width slowly increase from zero, in order to eliminate the inrush current and the overshoot voltage during start-up. The post simulation results show that the regulator soft starts well with the proposed soft-start circuit.