HIGH-FREQUENCY POWER SUPPLY DEVICE

• Main Authors: IKENARI TATSUYA, FUKUMOTO YOSHIKI
• Format: Patent
• Language: English; Japanese
• Published: 17.01.2019
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

To provide a high-frequency power supply device capable of reducing a conduction loss.SOLUTION: A high-frequency power supply device A1 comprises: an inverter circuit 21 that has a resonance circuit 31 obtained by series-connecting a capacitor C1 and an inductor L1; an inverter circuit 22 that has a resonance circuit 32 obtained by series-connecting a capacitor C2 and an inductor L2; a control circuit 4 that controls an output by changing a phase difference between drive signals to be outputted to the inverter circuits 21 and 22; and a voltage limiting circuit 5 that limits increase of an inter-terminal voltage of the capacitors C1 and C2 more than a predetermined voltage.SELECTED DRAWING: Figure 1 【課題】導通損失を低減することができる高周波電源装置を提供する。【解決手段】高周波電源装置Ａ１は、コンデンサＣ１とインダクタＬ１とを直列接続した共振回路３１を有するインバータ回路２１と、コンデンサＣ２とインダクタＬ２とを直列接続した共振回路３２を有するインバータ回路２２と、インバータ回路２１，２２に出力する駆動信号の位相差を変化させることで出力を制御する制御回路４と、コンデンサＣ１，Ｃ２の端子間電圧が所定電圧より大きくなることを制限する電圧制限回路５とを備えている。【選択図】図１