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摘要
This letter proposes a new adaptive on-time pulse-frequency modulation (PFM) circuit that operates at a wide range of supply voltage levels and that can generate various output voltage levels compared to conventional circuits. The circuit%26apos;s peak inductor current is well-controlled; the magnitude of the output ripple voltage is constant, even when the supply and output voltage levels are significantly different. Since the ripple voltage is a noise component, constant ripple voltage is important for predictable noise of a power management system.
- 出版日期2012-5
