TWI331275B

TWI331275B -

Info

Publication number: TWI331275B
Application number: TW096105904A
Authority: TW
Inventors: Dan Chen
Priority date: 2007-02-16
Filing date: 2007-02-16
Publication date: 2010-10-01
Also published as: TW200836050A

Description

1331275 九、發明說明：【發明所屬之技術領域】本發明係有關於一種電源供應器之軟式切換電路，藉由在無橋式整流電路中連接一輔助電路之設計，令完成零電壓轉移之軟式切換，減低切換損失，並同時具有低導通損與低切換損之特性，適用於電源供應器或類似結構者。【先前技術】現今科技的發達，在有關電源的部份運用也越來越廣泛，越來越多的產品都會使用到電源供應器，尤其是在個人電腦、工業用電腦、交換機 '收銀機、印表設備……等等中需求AC/DC轉換電源，而藉由開關式結構來啟閉電源。而目則電源供應H巾大多制如第丨目巾所示之升壓型架構之功因校正之電轉換H ’其先藉由㈣整流驗錢電轉成直流，再1331275 IX. Description of the invention: [Technical field of the invention] The present invention relates to a soft switching circuit for a power supply, which is a soft type that completes zero voltage transfer by connecting an auxiliary circuit in a bridgeless rectifier circuit. Switching, reducing switching losses, and at the same time has low conduction loss and low switching loss characteristics, suitable for power supply or similar structures. [Prior Art] Nowadays, the development of technology is becoming more and more widely used in some parts of the power supply. More and more products will use power supplies, especially in personal computers, industrial computers, switches, and cash registers. In the printing equipment, etc., an AC/DC conversion power supply is required, and the power supply is turned on and off by a switch type structure. However, the power supply H-belt is mostly made up of the boost-type architecture shown in the 丨目 towel. The corrected electrical conversion H ’ is first converted to DC by the (4) rectification test.

…”、〈将性，藉由功因調控技術使之輸入電流辆波，*_輸出電顧人電流纖之目的。器，可省去前端之橋式整流器，流並可得到良好的電壓調控特性另第2圖部份為採用無橋式升壓型架構之功因校正之電源轉換利用電流調控技術直接將交流轉成直，輸入電流也可調控近似弦波，由於無橋式整流H，故有較少之元件導通損。 …、其上述第1圖及第2圖之兩種架構操作在高頻時，會導致較 5 1331275 大之切換損失及電磁干擾，乃為其最主要之缺失β 本發明人有鑑於上述缺失，期能提供一種利用在無橋式整流電路中連接-獅電路之設計’達職導通損及低切換損之效能，乃潛心研思、設計組製’以提供消費大微用，為本發明所欲研發之創作動機者。【發明内容】本發明之主要目_在提供祕應ϋ之軟式诚電路，藉由無橋式整流電路中連接-輔助電路之設計，即可完成主開關零電壓切換及辅助開關零電流切換之特性，使同時具有低導通損及低切換損者。本發明之次-目的在提供—種電祕魅之軟式切換電路，經由無橋式整流電路在輸人端移除橋式整流器，以達降低導通損失，，使電路具有低導通損者。為達上述之目的，本發财主要係包财—無橋式整流電路及一輔助電路；賴助電_連接雜橋式整耗財，該無橋式整流電路係包含有至少_璩波電感、二個主開關、二個二極體及一電容，其中衣慮波電感係、連接第—個二極體，而第—個二極體再連接第二個二極體’該第二個二極體係連接第一個主開關，而第一主開關再連接第。個主開關’該二個二極體及二個主開關係並聯—電容，以降低導通 —而糊助電路係包含至少_雜電感、—伽關、至少二個 •極體及—電壓源電路，其中該二個二極體係連接諸振電感再與電壓源電路連接’而電麵電路再連接輔助開關；藉此，以軟式切換電路 6...", "Sexuality, by means of power factor control technology to input current wave, *_ output for the purpose of human current fiber. Can eliminate the front-end bridge rectifier, flow and get good voltage regulation The second part of the feature is the power conversion using the power factor correction of the bridgeless boost architecture. The current regulation technology directly converts the AC into a straight line, and the input current can also regulate the approximate sine wave. Because of the bridgeless rectifier H, Therefore, there are fewer component conduction losses. ..., the above two structures of Figure 1 and Figure 2 operate at high frequencies, which will result in a larger switching loss and electromagnetic interference than 5 1331275, which is the main missing. In view of the above-mentioned deficiencies, the present inventors have been able to provide a design that utilizes the connection of the lion circuit in the bridgeless rectifier circuit to achieve the performance of the link loss and low switching loss, and is dedicated to research and design. The consumption of large-scale use is the creative motive for the research and development of the invention. SUMMARY OF THE INVENTION The main object of the present invention is to provide a soft-hearted circuit of the secret, which is designed by a connection-auxiliary circuit in a bridgeless rectifier circuit. , you can The characteristics of the zero-switching of the main switch and the zero-current switching of the auxiliary switch enable the low-conduction loss and the low-switching loss at the same time. The second objective of the present invention is to provide a soft switching circuit of the electric secret, via bridgeless rectification. The circuit removes the bridge rectifier at the input end to reduce the conduction loss, so that the circuit has low conduction loss. For the above purpose, the fortune is mainly a wealth-bridgeless rectifier circuit and an auxiliary circuit;赖助电_Connecting the hybrid bridge type of power consumption, the bridgeless rectifier circuit includes at least _chopper inductor, two main switches, two diodes and a capacitor, wherein the clothing wave inductance system, the connection a diode, and the first diode is connected to the second diode. The second diode is connected to the first main switch, and the first main switch is connected to the first main switch. Two diodes and two main open relationships are connected in parallel - a capacitor to reduce conduction - and the paste assist circuit includes at least - a hetero-inductance, a - gamma, at least two poles and - a voltage source circuit, wherein the two Two-pole system connects the inductors and voltage The source circuit is connected and the electrical circuit is connected to the auxiliary switch; thereby, the soft switching circuit 6

Claims

1331275 ___ %8'45 曰 Amendment 10, the scope of patent application: 1. A soft switching circuit for a power supply, comprising: a bridgeless rectifier circuit, the bridgeless rectifier circuit comprising at least one filter inductor, Two main switches, two diodes and a capacitor, wherein the chopper inductor is connected to the anode of the first diode, and the cathode of the first diode is connected to the cathode of the second diode The anode of the second diode is connected to the secret of the first charm switch ((4) (5), and the source of the first main switch is connected to the source of the second main switch (s〇urce), the second Two diodes and two main open relationships are connected in parallel to reduce conduction loss; - auxiliary circuit 'the auxiliary circuit is connected to the bridgeless rectifier circuit, and the auxiliary circuit includes at least one resonant inductor and one auxiliary a switch, at least two diodes, and a voltage source circuit, wherein the cathode of the one diode is connected to the resonant inductor and then connected to the voltage source circuit, and the voltage source circuit is connected to the drain of the auxiliary switch; With a soft switching circuit The characteristics of the zero-voltage switching and the gamma-zero current switching, and the characteristics of low conduction loss and low switching loss at the same time. 2. The soft switching circuit of the power supply as described in the application of the patent scope. The filter inductor of the bridgeless rectifier circuit is a coupled filter inductor. 3. The soft switching circuit of the power supply device according to the invention of claim w, wherein the filter inductor of the bridgeless rectifier circuit is uncoupled Filtering inductors. 4 A soft switching circuit for a power supply as described in claim 1 wherein the auxiliary switch of the main switch and the auxiliary circuit of the non-bridge rectifier circuit is a metal oxide semiconductor device (Metd) —Oxide—Semiconductor. Parallel capacitors and diodes. 5 'The soft-switching circuit of the power supply II as described in the first application of the patent, in which the 15 1331275 bridge rectifier circuit is closed and the auxiliary circuit The auxiliary opening relationship is the Insulated Gate Bipolar Transistor parallel capacitor and diode. 6. As claimed in the patent scope The soft switching circuit of the power supply device, wherein the auxiliary circuit is provided with a charm capacitor, and the impurity capacitor is respectively connected to the drain (Drain) and the source (Source) of the auxiliary switch. The soft-switching circuit of the power supply mentioned in Item 1 of the full-scale, wherein the main open circuit of the bridgeless rectifier circuit includes parasitic capacitance, and the parasitic capacitance is respectively connected to the drain of the main switch (Drain) And the source (s〇urce) 8. The soft switching circuit of the power supply device as described in claim 1, wherein the voltage source circuit of the auxiliary circuit is a polarity reducing self-bridge transistor circuit, the reduction The polarity self-bridge full-bridge transformer circuit is composed of two sets of two diodes and a reduced-polarity transformer which are connected in parallel with each other. The two ends of the reduced-polarity transformer are respectively connected to the two diodes of the group, and one end is connected with one two. The anode of the polar body and the cathode of a diode. 9. The soft switching circuit of the power supply device according to claim 1, wherein the voltage source circuit of the auxiliary circuit is a polarity-polarized self-coupled full-bridge transformer circuit, and the polarity-polarized self-coupled full-bridge transformer circuit is Two sets of two diodes and one pair of polar transformers are connected in parallel with each other. The two ends of the polarizing transformer are respectively connected to the two diodes of the group, and one end is connected to the anode of one diode and one diode. The cathode. 10, such as the scope of patents! The soft switching circuit of the power supply device of the item, wherein the voltage source circuit of the auxiliary circuit is a polar transformer circuit, and the polar transformer circuit is composed of two diodes and a polar transformer, and the polarity is added. The transformers are respectively connected to the anodes of the two diodes. 11. If you apply for the soft-switching circuit of the electric circuit as described in item 1, the auxiliary circuit is based on the Wei-class Wei scale-reducing polarity self-depressor circuit thief polarity from the transformer circuit system - a diode, A resistor, a capacitor and a reduced polarity transformer are formed. The polarity reducing transformer is connected to the anode of the diode, and the cathode of the diode is connected to the resistor and capacitor connected in parallel. 1 2. The soft switching circuit of the power supply device as described in the patent fine item i, wherein the voltage source circuit of the auxiliary circuit is a polar self-consumption transformer circuit, and the polarity-added self-side transformer circuit is composed of a diode , a resistor, a capacitor and a polar surface device, the polar transformer is connected to the anode of the diode, and the cathode of the diode is connected to the resistor and the capacitor connected in parallel. 1 3, such as _ please patent scope In the soft switching circuit of the power supply of the above, the voltage source circuit of the auxiliary circuit is a central tapped transformer circuit, and the central tapped transformer circuit is composed of two diodes and a central tapped transformer. The center tapped transformer is connected to the anodes of the two diodes, respectively.