VOLTAGE REGULATOR AND UNINTERRUPTIBLE POWER SUPPLY USING THE SAME

To provide a voltage regulator with even higher power conversion efficiency on the basis of an isolated DC-DC converter with high power conversion efficiency.SOLUTION: A voltage regulator 1A includes an input positive pole connected to a positive input terminal Ti+ and an input negative pole connected to a negative input terminal Ti-, an isolated polyphase LLC resonant converter 10 equipped with an output positive electrode and an output negative electrode that converts the first DC voltage input between the input positive electrode and the input negative electrode into a second DC voltage that is isolated from the first DC voltage and outputs it, a first electric wire 11A connecting between the input positive electrode and the output negative electrode of the isolated polyphase LLC resonant converter 10, a positive output terminal To+ connected to the output positive terminal, and a negative output terminal To- connected to the input negative pole.SELECTED DRAWING: Figure 2 【課題】電力変換効率が高い絶縁形ＤＣ－ＤＣコンバータを基にして、更に電力変換効率の高い電圧調整装置を提供する。【解決手段】電圧調整装置１Ａは、正入力端子Ｔｉ＋に接続された入力正極および負入力端子Ｔｉ－に接続された入力負極と、入力正極と入力負極との間に入力された第１の直流電圧を第１の直流電圧とは絶縁された第２の直流電圧に変換して出力する出力正極および出力負極とを備えた絶縁形多相ＬＬＣ共振コンバータ１０と、絶縁形多相ＬＬＣ共振コンバータ１０の入力正極と出力負極との間を接続する第１電線１１Ａと、出力正極に接続される正出力端子Ｔｏ＋と、入力負極に接続される負出力端子Ｔｏ－とを備える。【選択図】図２