CN202424562U - High-efficiency alternating current rectification booster circuit - Google Patents

High-efficiency alternating current rectification booster circuit Download PDF

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Publication number
CN202424562U
CN202424562U CN2011205724092U CN201120572409U CN202424562U CN 202424562 U CN202424562 U CN 202424562U CN 2011205724092 U CN2011205724092 U CN 2011205724092U CN 201120572409 U CN201120572409 U CN 201120572409U CN 202424562 U CN202424562 U CN 202424562U
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high
positive
negative
semiwave
wave
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CN2011205724092U
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Chinese (zh)
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刘松松
康淑红
李占尊
杨瑞杰
王京民
王大海
王新强
甄雪朋
管恩怀
陈云雪
韩玉杰
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深圳国耀电子科技有限公司
石家庄国耀电子科技有限公司
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Abstract

The utility model relates to a high-efficiency alternating current rectification booster circuit consisting of a booster inductor, a positive semiwave high-frequency modulation tube, a negative semiwave high-frequency modulation tube, a positive semiwave rectification diode, a negative semiwave rectification diode and two filter capacitors. Sources of the two high-frequency modulation tubes are connected, a drain of the positive semiwave high-frequency modulation tube is connected with one electrode of an alternating current power supply through the boost inductor, a drain of the negative semiwave high-frequency modulation tube is a public end for outputting direct current and is connected with the other electrode of the alternating current power supply, a cathode of the positive semiwave rectification diode is connected with the drain of the positive semiwave high-frequency modulation tube, an anode of the positive semiwave rectification diode is a positive preset voltage output end, an anode of the negative semiwave rectification diode is connected with the drain of the positive semiwave high-frequency modulation tube, a cathode of the negative semiwave rectification diode is a negative preset voltage output end, and two filtering capacitors are respectively connected between the positive, negative preset voltage output ends and the public end. The high-efficiency alternating current rectification booster circuit provided by the utility model can be used for omitting a rectification bridge of a traditional rectification booster circuit so that the circuit does not input rectification loss and effectively improves the conversion efficiency of the switch power supply.

Description

一种高效率的交流整流升压电路技术领域 An efficient AC-power boost rectifier circuit Technical Field

[0001 ] 本实用新型涉及一种用于将交流电转换成直流电的电路,属电源技术领域。 [0001] The present invention relates to a method of converting alternating current into direct current circuit for the power supply belongs to technical field.

背景技术 Background technique

[0002] 随着开关电源技术的快速发展,大功率、高效率、高功率密度已经成为开关电源的一种发展趋势,而高效率是实现大功率和高功率密度的基础。 [0002] With the rapid development of technology, the switching power supply, high power, high efficiency, high power density has become a development trend in switching power supply, high efficiency and is the basis for high power and high power density. 传统开关电源一般是先进行交流整流升压,再进行DC/DC转换,目前已有多项技术可以提高开关电源的效率,如全桥移相技术、LLC谐振技术、优异的器件性能,等等,但作为开关电源的第一级高损耗单元一整流升压电路中整流桥的损耗却被大部分人所忽略,这是因为在传统开关电源技术思维定式中,整流桥的效率损是必须的,没有办法消除的。 Usually the conventional switching power supply is to communicate rectification step, then DC / DC converter, there are a number of techniques may improve the efficiency of the switching power supply, such as a phase shift full bridge technology, LLC resonant technology, excellent device performance, etc. , but as a loss of the first stage a high loss of a switching power supply unit rectifying boosting circuit of the rectifier bridge was ignored by most people, because in the conventional switching power supply technology mindset, the efficiency loss of the rectifier bridge is necessary there is no way to eliminate. 在小功率电源中,输入电流小,损耗也较小,因此整流桥的损耗可以被忽略,但在大功率电源中,输入电流比较大,整流桥的损耗值不能被忽视,因此,减小整流升压电路中整流桥的损耗也是提高开关电源效率的有效手段之一。 In small power supply, the input current is small, the loss is small, and therefore the loss of the rectifier bridge can be ignored, but in the power supply, the input current is relatively large, the rectifier bridge loss value can not be ignored, thus reducing the rectifier loss in the boosting circuit the rectifier bridge is one effective means to improve the efficiency of the power switch. 但是,一般整流桥封装的均为硅二极管,其压降很难降低,因而通过提高器件性能的办法无法降低其损耗,这就给整流升压电路效率的提高带来了困难。 Generally, however, the rectifier bridge are encapsulated silicon diode, which is difficult to reduce the pressure drop, and thus the loss can not be reduced by improving the device performance of the approach, which makes it difficult to improve the efficiency of the rectifying boosting circuit.

实用新型内容 SUMMARY

[0003] 本实用新型的目的在于克服现有技术的不足,提供一种高效率的交流整流升压电路,以提闻开关电源的整体转换效率。 [0003] The object of the present invention is to overcome the disadvantages of the prior art, to provide an efficient AC-power boost rectifier circuit to provide the smell of the overall conversion efficiency of the switching power supply.

[0004] 本实用新型所述问题是以如下技术方案实现的: [0004] The problem of the present invention is implemented in the following technical solutions:

[0005] 一种高效率的交流整流升压电路,由升压电感、正半波高频调制管、负半波高频调制管、正半波整流二极管、负半波整流二极管和两个滤波电容组成,两高频调制管的源极相接,正半波高频调制管的漏极经升压电感接交流电源的一个极,负半波高频调制管的漏极是输出直流电的公共端并与交流电源的另一个极连接,正半波整流二极管的阴极接正半波高频调制管的漏极,阳极为正预置电压的输出端,负半波整流二极管的阳极接正半波高频调制管的漏极,阴极为负预置电压的输出端,两滤波电容分别接于正、负预置电压输出端与公共端之间。 [0005] A high efficiency ac rectifying boosting circuit, a boost inductor, a high frequency modulated positive half wave tube, a high frequency modulated negative half-wave tube, the positive half-wave rectifier diode, the negative half-wave rectifying diodes and two filter capacitors, two high-frequency modulation source transistor is connected, the drain of the boost inductor through the half-wave modulated high-frequency AC power supply pipe connected to a drain, the negative half-wave high-frequency modulation of the tube is a common DC output and the other end is connected to the AC power source, the positive half-wave rectifier diode cathode connected to the positive half-wave high-frequency modulation of the drain tube, the anode terminal of the output preset positive voltage, the anode to the negative half-wave rectifying diode of the positive half a high frequency wave modulation of the drain tube, cathode end of the negative output voltage is preset, two filter capacitors are connected to the positive, the voltage between the output terminal and the common terminal negative preset.

[0006] 上述高效率的交流整流升压电路,所述正半波高频调制管和负半波高频调制管采用IGBT,二者内部均设置有反向并联二极管。 [0006] The AC rectifier efficient boosting circuit, the positive half-wave tube and a high-frequency modulation frequency modulated negative half-wave tube using the IGBT, both provided with internal anti-parallel diode.

[0007] 本实用新型采用两个BOOST升压电路直接对输入交流的正负半波进行正负两个方向的升压,得到正预置电压和负预置电压,为后级DC/DC变换提供稳定电压。 [0007] The present invention uses two booster circuit BOOST input AC direct positive and negative half-waves of both positive and negative boosted to obtain a positive voltage and a negative pre preset voltage, the level of DC / DC converter to provide a stable voltage. 由于省去了传统整流升压电路中的整流桥,因而所述电路没有输入整流损耗,有效提高了开关电源的转换效率。 By eliminating the conventional rectifier bridge rectifying boosting circuit, so that said input rectifier circuit without losses, to effectively improve the conversion efficiency of the switching power supply.

附图说明 BRIEF DESCRIPTION

[0008] 下面结合附图对本实用新型作进一步说明。 [0008] DESCRIPTION OF DRAWINGS The present invention is further made.

[0009] 图I是本实用新型的电原理图;[0010] 图2是交流电压波形与调制管驱动脉宽的关系示意图。 [0009] FIG. I of the present invention is an electrical schematic diagram; [0010] FIG. 2 is a schematic view of the relationship between an AC voltage waveform and the drive pulse width modulator tube.

[0011] 图中各标号为:L、升压电感;S1、正半波高频调制管;S2、负半波高频调制管;D1、正半波整流二极管;D2、负半波整流二极管;C1、正半波滤波电容;C2、负半波滤波电容。 [0011] Each reference numeral in FIG.: L, boost inductor; S1, the positive half-wave high-frequency modulator tube; S2, negative half-wave high-frequency modulator tube; D1, the positive half-wave rectifier diode; D2, the negative half-wave rectifier diode ; C1, positive half-wave filter capacitor; C2, negative half-wave filter capacitor.

具体实施方式 Detailed ways

[0012] 本实用新型是一种高效率的交流整流及升压电路,它能够很好地改善开关电源输入整流的损耗,使整流桥的损耗降为0,并结合BOOST升压,为后级DC/DC变换提供稳定电压。 [0012] The present invention is a highly efficient AC rectifier and boost circuit, it is possible to greatly improve the rectified power input switching loss, so the loss of the rectifier bridge reduced to 0, and booster binding BOOST, after stage DC / DC converter to provide a stable voltage.

[0013] 本实用新型交流输入无须经过整流,而是直接对输入交流的正负半波进行正负两个方向的升压,输入交流电源经过BOOST升压电感后,其中正半波电压经正半波高频调制管的正向升压调制,再经过高频整流后得到正向预置电压,负半波电压经负半波高频调制管的负向升压调制,再经过高频整流后得到负向预置电压,滤波电容以OV为地分别对输出正电源和负电源滤波。 [0013] The present invention need not rectified AC input, but directly to the positive and negative half-wave of the AC input boosting both positive and negative, the input AC power supply through the boost inductor BOOST, wherein the positive half-wave voltage through n positive half-wave modulated high-frequency modulation boost tube, and then after the preset voltage high frequency rectified positive, negative half-wave voltage through a negative negative half-wave modulated high-frequency modulation to the booster tubes, then through a high frequency rectifier after obtaining a preset negative voltage, the filter capacitor to the output of OV are respectively a positive and a negative power supply filtering.

[0014] 电路工作原理如下: [0014] The circuit operates as follows:

[0015] 参看图1,Vin输入为交流电压,输出+V为正预置电压,当输入电源波形为正弦波正半波时,正半波电压经过L、SI、DU Cl组成的以OV为参考地的BOOST升压电路后,得到正预置电压+V,在此变换中,L为BOOST升压电感,SI为升压高频调制管,Dl、Cl对高频调制后的电压波形进行整流、滤波。 [0015] Referring to FIG. 1, Vin is the input AC voltage, + V is the positive output voltage preset when the input power waveform is a sine wave positive half-wave, the positive half-wave voltage through L, SI, DU Cl to OV is composed of after bOOST boosting circuit reference ground to obtain a preset positive voltage + V, in this transformation, L is a bOOST boost inductor, the boost frequency modulator tube the SI, Dl, Cl voltage waveform frequency modulated rectification, filtering. 输入交流正半波的电压波形是按正弦波曲线变化的电压,BOOST闭环调整稳压电路会根据正弦波正半波电压幅值的变化来调整高频调制管SI的驱动脉宽以实现输出稳压,交流电压波形与调制管驱动脉宽的关系如图2所示。 Positive AC input voltage waveform half-wave voltage of the sine wave curve, BOOST loop tuning regulator circuitry adjusts the driving frequency pulse width modulator tube SI varies according to a sine wave voltage amplitude of positive half-wave to achieve a stable output relationship pressure, an AC voltage waveform with a pulse width modulated drive tube as shown in FIG. 对输入交流正半波进行调制时,SI做为升压调制开关,SI和S2的驱动同步,S2此时只起到通路的作用。 When the positive AC half-waves of the input modulated, SI modulation switch as a boost, SI and S2 are driven synchronously, S2 function as passages of time only.

[0016] 同理逆推,当输入电源波形为正弦波负半波时,负半波电压经过L、S2、D2、C2组成的以OV为参考地的负向BOOST升压电路后,得到负预置电压-V,在此变换中,L为BOOST升压电感,S2为升压高频调制管,D2、C2对高频调制后的电压波形进行整流、滤波。 [0016] backstepping Similarly, when the input power waveform is a sine wave negative half-wave, the negative half-wave voltage through L, S2, D2, C2 composed of a negative reference to OV after the BOOST to the booster circuit, to obtain a negative preset voltage -V, in this transformation, L is a boost inductor bOOST, S2 of high frequency boosted modulator tube, D2, C2 of the high frequency modulation voltage waveform is rectified, filtered. 对输入交流负半波进行调制时,S2做为升压调制开关,SI和S2的驱动同步,SI此时只起到通路的作用。 When the negative half-wave of the AC input is modulated, S2 modulation switch as a boost, SI and S2 are driven synchronously, SI time only acts passage.

[0017] 交流输入的正负半波经过本电路升压后,最终在输出端得到以OV为地的正预置电压+V和负预置电压-V,在应用中我们可以以-V为地,从而得到两倍于+V的电压。 After the positive and negative half-wave circuit of the voltage present, to finally obtain the OV ground preset positive voltage + V and the negative voltage -V preset, we can apply to the output terminal -V [0017] AC input to thereby obtain twice the voltage of + V.

Claims (2)

1. 一种高效率的交流整流升压电路,其特征是,所述电路由升压电感(L)、正半波高频调制管(SI)、负半波高频调制管(S2)、正半波整流ニ极管(Dl)、负半波整流ニ极管(D2)和两个滤波电容组成;所述两高频调制管的源极相接,正半波高频调制管(SI)的漏极经升压电感(L)接交流电源的ー个极,负半波高频调制管(S2)的漏极是输出直流电的公共端并与交流电源的另ー个极连接;正半波整流ニ极管(Dl)的阴极接正半波高频调制管(SI)的漏扱,阳极为正预置电压的输出端,负半波整流ニ极管(D2)的阳极接正半波高频调制管(SI)的漏极,阴极为负预置电压的输出端,两滤波电容分别接于正、负预置电压输出端与公共端之间。 An efficient AC-power boost rectifier circuit, characterized in that said circuit by the boost inductance (L), the positive half-wave modulated high-frequency tube (the SI), the negative half-wave high-frequency modulation valve (S2), positive half-wave rectifier Ni diode (Dl), the negative half-wave rectifier Ni diode (D2) and two filter capacitors; two high-frequency modulation of the source transistor is connected, the positive half-wave modulated high-frequency tube (SI ) boosted drain inductor (L) connected to an AC power supply ー, a drain pipe negative half-wave high frequency modulation (S2) is a DC output and a common terminal connected to the other pole of the AC power source ー; n Ni anode to half-wave rectifying diode (Dl) cathode connected to the positive half-wave modulated high-frequency tube (SI) Cha drain anode is preset positive voltage output terminal, the negative half-wave rectifying diode Ni (D2) n half-wave modulated high-frequency tube (SI) of a drain, a preset negative cathode voltage of the output terminal, respectively connected to the two filter capacitor between the positive voltage output terminal and the common terminal negative preset.
2.根据权利要求I所述高效率的交流整流升压电路,其特征是,所述正半波高频调制管(SI)和负半波高频调制管(S2)采用IGBT,二者内部均设置有反并联ニ极管。 According to claim I of the rectified AC efficient boosting circuit, characterized in that the positive half-wave modulated high-frequency tube (SI) and a negative half-wave high-frequency modulation valve (S2) using the IGBT, both internal ni is provided with anti-parallel diode.
CN2011205724092U 2011-12-31 2011-12-31 High-efficiency alternating current rectification booster circuit CN202424562U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103904917A (en) * 2012-12-26 2014-07-02 中兴通讯股份有限公司 AC rectification voltage-boosting circuit and rectification voltage-boosting device
CN107147316A (en) * 2017-05-17 2017-09-08 华南师范大学 A kind of AC power circuit and its control method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103904917A (en) * 2012-12-26 2014-07-02 中兴通讯股份有限公司 AC rectification voltage-boosting circuit and rectification voltage-boosting device
CN107147316A (en) * 2017-05-17 2017-09-08 华南师范大学 A kind of AC power circuit and its control method
CN107147316B (en) * 2017-05-17 2019-06-11 华南师范大学 A kind of AC power circuit and its control method

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Address after: 050035 No. 56, 3 Kunlun street, Shijiazhuang Development Zone, Hebei, China

Patentee after: Shijiazhuang Guoyuo Electrnic Science & Technology Co., Ltd.

Address before: 050035 No. 56, 3 Kunlun street, Shijiazhuang Development Zone, Hebei, China

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