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This paper explores generalized output impedance models and develops a new performance-limit figure of merit (FOM) for switched-capacitor (SC) dc–dc converters that can be resonated or soft-charged with a single inductor. Compared to past work, the output impedance model is greatly simplified through a two-port charge multiplier treatment, yet it maintains accuracy across conversion ratios and is...
This paper explores methods to optimize and compare a variety of switched-capacitor (SC) DC-DC topologies that can be operated in a resonant mode. A figure of merit is developed that is a proxy for minimum achievable power loss, based on conduction and frequency-dependent losses in the active semiconductor components. Similar to past work on pure SC converters, the method leverages a charge-multiplier...
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