M437003 五、新型說明： 【新型所屬之技術領域】 本創作係有關於一種低漣波升壓型D c _ D c轉換 器，尤其是指一種輸出電流為連續導通電流〔C CM〕 、可降低電磁干擾〔EMI〕，且不需加大輸出電容值 即可減少輪出電壓漣波，並在相同關導通比時電屢轉 換比較π ’而在其整體施行使用上更增實用功效特性的 低漣波升壓型DC_DC轉換器創新設計者。 【先前技術】 按，近年來許多電子產品的電源轉換器往往都要求 大電流供電且高功㈣度，在大電流輸出的規格需求下 ，電源轉換H將面制性科料導體科之功率損失 及熱應力的問題，以及輸出電壓漣波增大等缺點。 其中，一般常見之升Μ型DC-DC轉換器，請參 閱第五圖現有之電路示意圖所示，該轉換器（2 )主要 係於電源輸入端之正極與電感（2 i )連接，電源輸入 端之負極則分別與開關（2 2 ).及電容（2 3 )連接， 且電感（2 1)及開關（2 2)另端與二極體（24) 之正極連接，該二極體（2 4)之負極則與電容（2 3 )另端連接，其電壓轉換比為v〇 = v / ( ^ —D )M437003 V. New description: [New technical field] This creation is about a low chopper boost type D c _ D c converter, especially one type of output current is continuous conduction current [C CM], which can be reduced. Electromagnetic interference (EMI), and it is not necessary to increase the value of the output capacitor to reduce the ripple of the output voltage, and the electric conversion is compared with π' at the same turn-on ratio, and the utility model is further increased in its overall implementation. An innovative designer of chopper boost DC_DC converters. [Prior Art] According to recent years, many electronic product power converters often require large current supply and high power (four degrees). Under the requirements of high current output specifications, power conversion H will reduce the power loss of the surface material conductors. The problem of thermal stress and the increase of output voltage ripple. Among them, the commonly used upgraded DC-DC converter, please refer to the schematic diagram of the circuit shown in the fifth figure. The converter (2) is mainly connected to the anode of the power input terminal and the inductor (2 i ), and the power input. The negative poles of the terminals are respectively connected to the switch (2 2 ) and the capacitor (2 3 ), and the other ends of the inductor (2 1) and the switch (2 2) are connected to the anode of the diode (24), and the diode ( 2 4) The negative pole is connected to the other end of the capacitor (2 3 ), and its voltage conversion ratio is v〇= v / ( ^ —D )
假設該轉換器（2)輸入電壓為12v、輸出電壓為3 6V'最大輸出功率為5〇w、切換頻率為1〇〇kH 〇 〇 β Η，透過 得知如第六圖現 由圖示中可得知 1012024054-0 z、輸入電感30仁ϋ與輸出電容為1 I s S p i c e電路模擬軟體作模擬， 有之輸入電流與輸出電流波形圖所示， 10120739#單編號A01〇l 第3頁/共π頁 M437003 該轉換器（2 )輪出電流為脈衝式電流，且請再一併參 閱第七圖現有之輸入電壓與輸出電壓漣波波形圖所示， 可得知該轉換器（2)輸出電壓峰對峰值為47 . 9m V，並請再一併參閱第八圖現有之輸入電壓與輸出電壓 比波形圖所示，可得知該轉換器（2 )當開關導通比為 0 . 6 7時，輸出電壓為3 6 V。 [0004] 也因此，該升壓型DC —D C轉換器因電路架構所 產生二極體輸出電流為不連續的脈衝電流，進而造成輸 出電壓漣波大的缺點，對於漣波電壓大小及電源產品體 積要求嚴格之升壓型D C — D C轉換器產品有很大的影 響。 [0005] [0006] [0007] [0008] 一般的解決電壓漣波太大的方法有以下兩種： 第一種係為加大輸出電容值使得電壓漣波減小，其 缺點為電容體積增大，使得功率密度下降； 第二種則係為提高開關切換頻率，其缺點為造成切 換損失的增加，效率降低。 緣是，創作人有鑑於此，秉持多年該相關行業之豐 富設計開發及實際製作經驗，針對現有之結構及缺失予 以研究改良，提供一種低漣波升壓型DC —DC轉換器 ，以期達到更佳實用價值性之目的者。 【新型内容】 [0009] 本創作之低漣波升壓型D C_D C轉換器，該轉換 器主要係令電源輸入端之正極與輸入電感第一端連接， 電源輸入端之負極則分別與開關、第一電容及輸出電容 10120739^ 單编號 A〇101 第4頁/共17頁 1012024054-0 M437003 [0010] toon]Assume that the converter (2) has an input voltage of 12v, an output voltage of 3 6V', a maximum output power of 5〇w, and a switching frequency of 1〇〇kH 〇〇β Η, which is known as shown in the sixth figure. It can be seen that 1012024054-0 z, the input inductor 30 and the output capacitor are 1 I s S pice circuit simulation software for simulation, there are input current and output current waveform diagram, 10120739# single number A01〇l page 3 / Total π page M437003 The converter (2) takes the current as a pulsed current, and please refer to the waveform of the input voltage and output voltage chopping waveform shown in the seventh figure. The converter can be known (2) The output voltage peak-to-peak value is 47.9 m V, and please refer to the waveform diagram of the input voltage and output voltage ratio shown in the eighth figure. It can be seen that the converter (2) has a switch-on ratio of 0. At 6 7 o'clock, the output voltage is 3 6 V. [0004] Therefore, the boost type DC-DC converter has a disadvantage that the output current of the diode is a discontinuous pulse current due to the circuit architecture, thereby causing a large ripple of the output voltage, and for the chopper voltage and the power product. The step-up DC-DC converter products with very tight volume requirements have a great impact. [0006] [0008] [0008] Generally, there are two methods for solving the problem that the voltage chopping is too large: The first type is to increase the output capacitance value so that the voltage chopping is reduced, and the disadvantage is that the capacitance is increased. Larger, the power density is decreased; the second is to increase the switching frequency of the switch, which has the disadvantage of causing an increase in switching loss and a decrease in efficiency. The reason is that, in view of this, the creators have been researching and improving the existing structures and defects by providing rich experience in design and development and actual production of the relevant industries for many years, and providing a low chopper boost type DC-DC converter to achieve more. The purpose of good practical value. [New content] [0009] The low chopper boost type D C_D C converter of this creation mainly makes the positive pole of the power input terminal and the first end of the input inductor connected, and the negative pole of the power input end respectively is connected with the switch , first capacitor and output capacitor 10120739^ single number A〇101 page 4 / total 17 pages 1012024054-0 M437003 [0010] toon]
之第-端連接，該輸人電感第二端與開關之第二端相連 接，且令輸入電感與開關之第二端同時連接有第一二極 體及第二電容之第一端，第一二極體與第一電容之第二 端則同時連接第二二極體之第一端，第二電容與第二二 極體之第二端則同時連接輸出電感之第一端，再令輸出 電感之第二端與輸出電容之第二端連接；藉此，使得該 轉換器輸出電流為連續導通電流〔CCM〕、可降低電 磁干擾〔EMI〕，且不需加大輸出電容值即可減少輪 出電壓漣波，並在相同開關導通比時電壓轉換比較高， 而在其整體施行使用上更增實用便利性者。 【實施方式】 為令本創作所運用之技術内容、創作目的及其達成 之功效有更完整且清楚的揭露，茲於下詳細說明之，並 請一併參閱所揭之圖式及圖號： 首先，請參閲第一圖本創作之電路示意圖所示，本 到作之轉換器（1)主要係令電源輸入端之正極與輸入 電感（1 1 )第一端連接，電源輸入端之負極則分別與 開關（12)、第一電容（13)及輸出電容（14) 之第一端連接，該輸入電感（1丄）第二端與開關（1 2)之第二端相連接，且令輸入電感（1 1 )與開關（ 1 2)之第二端同時連接有第一二極體（丄5)及第二 電容（16)之第一端，第一二極體（1 5)與第一電 各（13)之第二端則同時連接第二二極體（2 7)之 第一端，第二電容（i 6)與第二二極體（丄7)之第 二蠕則同時連接輸出電感（1 8)之第一端， 1〇12〇739# 單蝙St A_ 第5頁/共Π頁 再令輸出 ' 1012024054-0 [0012]M437003 電感（18)之第二端與輸出電容（14)之第二端連 接0 ♦如此一來，使得本創作之轉換器（工）在電路作動 施行使用上，當該開關（1 2 )為ON、第一二極體（ 1 5 )為of F，此時該第一電容（丄3 )釋能對第二 電谷（1 6)充能，使得第二二極體（i 7)順向偏壓 為ON，輸入電感（i）此時的跨壓即等於輸入電壓 ，輪入電感（1 1)之電流線性上升，輸出電感（工8 )此時之跨壓則為第一電容（1 3 )之電壓減掉輸出電 壓’輪出電感（18)之電流線性下降；而當開關（丄 2)為OFF，該第一電容（13)透過輸入電壓充能 ’使得第—二極體（1 5)順向偏壓為ON，且第二二 極體（17)逆向偏壓為off，輸入電感（1 ；[)此 時的跨壓為輸入電壓減掉第一電容（丄3)之電壓，輸 入電感（1 1 )之電流線性下降，輸出電感（丄8)此 時之跨壓則為第二電容（16)之電壓加上第一電容（ 1 3)之電壓減掉輸出電壓，輸出電感（18)之電流 線性下降》 [0013] 假設本創作之轉換器（1 )與傳統的轉換器（2) 電氣規格相同’輸入電壓為12V、輸出電壓為36V '最大輸出功率為5 0 W、切換頻率為1 〇 〇 k Η z、 輸入電感30#H與輸出電容為ι〇〇#η，透過I s S p i c e電路模擬軟體作模擬。請再一併參閱第二圖 本創作之輸入電流與輸出電流波形圖所示，可得知本創 作轉換器（1)輸出電流為連續導通電流〔CCM〕、 1012〇739户單编號* A0101 第6頁/共17頁 1012024054-0 1437003 可降低電磁干擾〔EMI〕，且請再一併參閱第三圖本 創作之輸入電壓與輸出電壓漣波波形圖所示，可得知本 創作轉換器（1 )輸出電壓峰對峰值為1 3 . 3 mV， 本創作轉換器（1 )不需加大輸出電容值即可減少輸出 電壓漣波，並請再一併參閱第四圖本創作之輸入電壓與 輸出電壓比波形圖所示，可得知本創作轉換器（1 )當 開關導通比為0.5時，輸出電壓為36V，使得在相 同開關導通比，本創作轉換器（1 )電壓轉換比較高。 [0014] 藉由以上所述，本創作結構之組成與使用實施說明 可知，本創作與現有結構相較之下，本創作主要係能讓 輸出電流為連續導通電流、可降低電磁干擾，且不需加 大輸出電容值即可減少輸出電壓漣波，並在相同開關導 通比時電壓轉換比較高，而在其整體施行使用上更增實 用便利性者。 [0015] 前述之實施例或圖式並非限定本創作之結構樣態， 任何所屬技術領域中具有通常知識者之適當變化或修飾 ，皆應視為不脫離本創作之專利範疇。 [0016] 綜上所述，本創作實施例確能達到所預期之使用功 效，又其所揭露之具體構造，不僅未曾見於同類產品中 ，亦未曾公開於申請前，誠已完全符合專利法之規定與 要求，爰依法提出新型專利之申請，懇請惠予審查，並 賜准專利，則實感德便；* 【圖式簡單說明】 [0017] 第一圖：本創作之電路示意圖 1_39严編請01 第7頁/共17頁 1012024054-0 M437003 [0018ί第二圖：本創作之輸入電流與輸出電流波形圖 [0019] 第三圖：本創作之輸入電壓與輸出電壓漣波波形圖 [0020] 第四圖：本創作之輸入電壓與輸出電壓比波形圖 [0021] 第五圖：現有之電路示意圖 [0022] 第六圖：現有之輸入電流與輸出電流波形圖 [0023] 第七圖：現有之輸入電壓與輸出電壓漣波波形圖 [0024] 第八圖：現有之輸入電壓與輸出電壓比波形圖 【主要元件符號說明】 [0025] ( 1 )轉換器 （1 1 )輸入電感 [0026] ( 1 2 )開關 （1 3 )第一電容 [0027] (14)輸出電容（15)第一二極體 [0028] (16)第二電容（17)第二二極體 [0029] (18)輸出電感 （2) 轉換器 [0030] ( 2 1 )電感 （2 2 )開關 [0031] (23)電容 （24)二極體 1012024054-0 10120739#單编號Α01ίΠ 第8頁/共17頁The first end of the input inductor is connected to the second end of the switch, and the first end of the first diode and the second capacitor are connected to the input end of the switch and the second end of the switch, The second end of the first capacitor and the second end of the second capacitor are simultaneously connected to the first end of the second diode, and the second end of the second capacitor and the second end of the second diode are simultaneously connected to the first end of the output inductor, and then The second end of the output inductor is connected to the second end of the output capacitor; thereby, the output current of the converter is continuous conduction current [CCM], electromagnetic interference (EMI) can be reduced, and the output capacitance value can be reduced. The pinch-out voltage ripple is reduced, and the voltage conversion is relatively high at the same switch-on ratio, and the practical convenience is increased in the overall implementation. [Embodiment] In order to make the technical content, creative purpose and the effect achieved by this creation more complete and clear, please elaborate below, and please refer to the drawings and drawings: First, please refer to the circuit diagram of the first picture. The converter (1) is mainly used to connect the positive terminal of the power input terminal to the first end of the input inductor (1 1 ), and the negative terminal of the power input terminal. Connected to the first end of the switch (12), the first capacitor (13) and the output capacitor (14), the second end of the input inductor (1丄) is connected to the second end of the switch (12), and The first end of the first diode (丄5) and the second capacitor (16) are connected to the second end of the input inductor (1 1 ) and the switch ( 1 2 ), and the first diode (1 5) And the second end of the first electric (13) is simultaneously connected to the first end of the second diode (27), the second capacitor (i6) and the second dipole (丄7) Then connect the first end of the output inductor (1 8), 1〇12〇739# Single bat St A_ Page 5 / Total page and then output ' 1012024054-0 [0012] M437003 Inductance (18 The second end is connected to the second end of the output capacitor (14). ♦ In this way, the converter (work) of the present invention is used in the circuit operation, when the switch (1 2 ) is ON, the first The diode (15) is of F, and the first capacitor (丄3) release energy charges the second electric valley (16), so that the second diode (i7) is forward biased to ON, the input inductor (i) at this time is equal to the input voltage, the current of the wheeled inductor (1 1) rises linearly, and the output inductor (gong 8) is the first capacitor (1 3 ). The voltage is reduced by the output voltage. The current of the wheel-out inductor (18) decreases linearly. When the switch (丄2) is OFF, the first capacitor (13) is charged through the input voltage' to make the first-pole (1 5) The forward bias is ON, and the reverse bias of the second diode (17) is off. The input inductor (1; [) is the voltage across the input voltage minus the voltage of the first capacitor (丄3). The current of the inductor (1 1 ) decreases linearly, and the output inductor (丄8) is the voltage across the second capacitor (16) plus the voltage of the first capacitor (13) minus the output voltage. The linear current drop of the sense (18) [0013] Assume that the converter (1) of this creation has the same electrical specifications as the conventional converter (2) 'the input voltage is 12V, the output voltage is 36V' and the maximum output power is 50 W. The switching frequency is 1 〇〇k Η z, the input inductor 30#H and the output capacitor are ι〇〇#η, and the simulation software is simulated by the I s S pice circuit. Please refer to the second figure for the input current and output current waveform diagram of this creation. It can be seen that the output current of the author converter (1) is continuous conduction current [CCM], 1012〇739 single number* A0101 Page 6 of 17 1012024054-0 1437003 can reduce the electromagnetic interference [EMI], and please refer to the third picture of the input voltage and output voltage chopping waveform diagram shown in the third figure, you can know the author converter (1) The output voltage peak-to-peak value is 13.3 mV. The original converter (1) can reduce the output voltage ripple without increasing the output capacitance value, and please refer to the input of the fourth figure. The voltage vs. output voltage ratio is shown in the waveform diagram. It can be seen that when the switch-on ratio is 0.5, the output voltage is 36V, so that the voltage conversion of the present converter (1) is compared at the same switch-on ratio. high. [0014] By the above, the composition and use of the present construction structure can be seen that, compared with the existing structure, the present invention mainly enables the output current to be a continuous conduction current, which can reduce electromagnetic interference, and It is necessary to increase the output capacitor value to reduce the output voltage chopping, and the voltage conversion is relatively high at the same switch-on ratio, and it is more practical and convenient in its overall implementation. [0015] The foregoing embodiments or drawings are not intended to limit the scope of the present invention, and any suitable variations or modifications of the ordinary skill in the art should be considered as not departing from the scope of the invention. [0016] In summary, the present embodiment can achieve the expected use efficiency, and the specific structure disclosed therein has not been seen in the same product, nor has it been disclosed before the application, and has completely complied with the patent law. Regulations and requirements, 提出Proposing new type of patent application according to law, pleading for review, and granting patents, it is really sensible; * [Simple diagram] [0017] The first picture: schematic diagram of the circuit of this creation 1_39 01 Page 7 of 17 1012024054-0 M437003 [0018ίSecond diagram: Input current and output current waveforms of this creation [0019] Third: The input voltage and output voltage chopping waveform of this creation [0020] The fourth picture: the input voltage and output voltage ratio waveform of this creation [0021] The fifth picture: the existing circuit schematic [0022] The sixth picture: the existing input current and output current waveform [0023] Seventh: existing Input voltage and output voltage chopping waveform diagram [0024] Figure 8: Existing input voltage vs. output voltage ratio waveform diagram [Main component symbol description] [0025] (1) Converter (1 1 ) input inductor [0026] ( 1 2) switch (1 3 ) first capacitor [0027] (14) output capacitor (15) first diode [0028] (16) second capacitor (17) second diode [0029] (18) output Inductor (2) Converter [0030] ( 2 1 ) Inductor (2 2 ) Switch [0031] (23) Capacitor (24) Diode 1012024054-0 10120739#单号Α01ίΠ Page 8 of 17