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In today’s mobile devices, buck-boost converters are widely used to convert the Li-ion battery voltage , typically ranging from 2.7 to 4.2 V, to the specific output voltage levels required by various modules. While certain modules only need a fixed supply voltage [1–5], others, such as envelope tracking RF power amplifiers (PA), demand a wide range of supply voltages and exhibit fast changes in currents and voltages [6]. At times, the supply voltage of the PA is required to switch from sub-1 V to 6V in a short time. Therefore, the buck-boost converter must handle the wide output voltage ranges and provide fast dynamic voltage scaling (DVS). Recent works in [1–5] only support a fixed instead of a wide range. In addition, conventional buck-boost converters and the hybrid converters in [1–3] suffer from the right-half-plane (RHP) zero, resulting in slow dynamic response. The dual-channel 3-level converter in [6] can …