Ring type switched-capacitor transformer and its applications

A switched-capacitor (SC) AC-DC or AC-AC converter with arbitrarily output voltage using the same circuit configuration

“…Figure 11 shows the comparison of the proposed circuit and the conventional circuit [2] when V ref =35V and R o_dc =10Ω. The parameters of the conventional circuit [2] are the same excluding C j =150uF(≠30uF). The output voltage drop of the conventional circuit was quite large.…”

“…Switched-capacitor (SC) converters convert the values of voltages by changing the connection of capacitors using switches [1][2][3][4]. The SC converter has the following features:…”

“…In conventional SC AC-DC converters [2][3] and AC-AC converters [4], it is general to charge capacitors when an input voltage is the value of integral multiples of the output voltage. Because of the charging chance is few, the output voltage decreases when the output current is large.…”

Design of a Dickson-Type Power Converter with Bootstrapped Gate Transfer Switches

“…For this reason, several types of DC-AC converters have been proposed (13) (17) . Among others, an SC DC-AC converter (15) (17) is one of the most efficient converters since magnetic elements are not required. Figure 6 shows the conventional SC DC-AC converter † † proposed by Hara et al (15) .…”

“…Among others, an SC DC-AC converter (15) (17) is one of the most efficient converters since magnetic elements are not required. Figure 6 shows the conventional SC DC-AC converter † † proposed by Hara et al (15) . In Fig.6 (a), the triangular voltage is generated from the ring-connected circuit which consists of 2N switches, N diodes, and N + 1 capacitors.…”