Abstract: A switched-capacitor coupled-inductor converter includes a converter, and near- and far-end power conversion units connected in parallel between positive and negative input interfaces. An output capacitor is arranged between the output interfaces. Each of the near- and far-end power conversion units include power switches Q1-Q3 and Q4-Q6 connected in series. The converter includes two coupled inductors having a same number of turns. An undotted terminal of one coupled inductor is connected to a dotted terminal of the other coupled inductor. A capacitor C1 is arranged between a node between Q1 and Q4 of the near-end power conversion unit and a ground terminal node of Q3 of the far-end power conversion unit. A capacitor C2 equal to the capacitor C2 is arranged at a node between a ground terminal node of Q4 of the near-end power conversion unit and Q2 of the far-end power conversion unit.

Abstract: A circuit adaptive zero-voltage switching control method based on switch transistor electroluminescence, an electroluminescence detection circuit, and an assembly structure thereof. Switching status is detected based on an electroluminescence effect, and gate switching of a device is autonomously controlled, implementing adaptive zero-voltage switching operation under both steady-state and transient-state loading conditions. Two signal receiving and amplifying assemblies are used in a differential mode in the detection circuit, to increase a signal-to-noise ratio of the electroluminescence detection circuit with an ultra-high amplification gain. A first silicon photomultiplier of a first signal receiving and amplifying assembly is close to a to-be-detected switch transistor die in a power module of an embedded printed circuit board and can sense electroluminescence in the switch transistor die.

Abstract: A power conversion system, including resonant capacitor, transformer, and proximal and distal power conversion units connected in parallel between positive and negative input interfaces. Proximal power conversion unit includes power switches S1-S3 connected, and the distal power conversion unit includes power switches Q1-Q3 connected. The transformer includes a primary and two secondary windings with a same number of turns. The resonant capacitor and primary winding are connected, one end is connected between S1 and S2 of the proximal unit, and the other is connected between Q1 and Q2 of the distal unit. The two secondary windings are connected, one end is connected between S2 and S3 of the proximal unit, and the other end is connected between Q2 and Q3 of the distal unit. A positive output port connection line between the two secondary windings, and a negative output port connected to a negative input port through a wire.

Abstract: A power supply conversion topology of a multiphase switch capacitor resonant cavity conversion circuit with full-wave output rectification. The power supply conversion topology includes at least k conversion switch capacitors and one output switch capacitor which are sequentially connected in series through conductors and are connected to two ends of input power supply. When a transformer ratio N is an even number, k=N/2; when transformer ratio N is not an even number, k is smallest integral greater than N/2; and lower end of output switch capacitor is grounded, and two ends of output switch capacitor are connected with output interfaces. Power supply conversion topology further includes k switch resonant cavity converters. When transformer ratio N is even number, k=N/2; and when transformer ratio N is not even number, k is smallest integral greater than N/2. The invention further discloses two power supply conversion structures based on power supply conversion topology.