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1. (WO2018162133) METHOD AND VOLTAGE MULTIPLIER FOR CONVERTING AN INPUT VOLTAGE, AND ISOLATING CIRCUIT

Pub. No.:    WO/2018/162133    International Application No.:    PCT/EP2018/051267
Publication Date: Fri Sep 14 01:59:59 CEST 2018 International Filing Date: Sat Jan 20 00:59:59 CET 2018
IPC: H02M 3/07
H02M 1/08
H02M 1/32
H02H 3/00
H02M 1/36
H02M 1/00
Applicants: ELLENBERGER & POENSGEN GMBH
Inventors: BÖSCHE, Dirk
WILKENING, Ernst-Dieter
Title: METHOD AND VOLTAGE MULTIPLIER FOR CONVERTING AN INPUT VOLTAGE, AND ISOLATING CIRCUIT
Abstract:
The invention relates to a method for converting an input voltage (UE) into an output voltage (UA), which is increased in comparison with the latter, by means of a number of voltage stages (12, 12a, 12b) that each have a series circuit (16), connected to a reference-earth potential (UG), comprising a rectifier diode (18, D7, D9) and a charging capacitor (20, C2, C4) and also a switchable first semiconductor switch (22, Q16, Q18), wherein in each voltage stage (12, 12a, 12b) a switchable second semiconductor switch (24, Q1, Q17) is connected in parallel with the rectifier diode (18, D7, D9) and the charging capacitor (20, C2, C4), and wherein the rectifier diodes (18, D7, D9) of adjacent voltage stages (12, 12a, 12b) are connected in series, in which first of all the first semiconductor switches (22, Q16, Q18) are closed and the second semiconductor switches (24, Q1, Q17) are opened, so that the charging capacitors (20, C2, C4) of the voltage stages (12, 12a, 12b) are charged by means of the input voltage (UE), and in which subsequently the first semiconductor switches (22, Q16, Q18) are opened and the second semiconductor switches (24, Q1, Q17) are closed, so that the individual voltages (UZ) produced on the charging capacitors (20, C2, C4) add up along the series-connected rectifier diodes (18, D7, D9) to produce the output voltage (UA).