200836460 九、發明說明： 【發明所屬之技術領域】 本發明係一種多輸入單一輸出電源之電流源隔離式回授 4路’主要指一種藉由電流源回授隔離方式可並接二個或二個 以上之電源轉換器，並可放寬P丽控制器的選擇限制。 【先前技術】200836460 IX. Description of the invention: [Technical field of the invention] The present invention is a current source isolated feedback four-way of a multi-input single output power supply, which mainly refers to a current source feedback isolation method that can be connected to two or two More than one power converter, and can relax the selection limit of the P-controller. [Prior Art]
同時提供AC或DC或AC、DC輸人之電源轉換器係可具有較 佳輸入電源義性，如第五騎示為習知—之電路架構，主 要係具-AC/DC轉換器i，、-DC/DC轉換器2,，並兩者之輸出端 連接具單DG輸㈣酬，又祕^賴11，、DG/DG轉換器2, 之輸出端分別連接-組由電阻RseU、R1，及電阻n敗， 組成之分壓電路分別回授至AC/轉換器丨，、D(yDc轉換器2, 之誤差放大職丨，、EA2,，使得藉錢變電鋪setl，、Rset2, 可改變回授至誤差放大·丨，,，之回授電壓以改變輸出電 壓V0 然而前述方式因調整輸出電㈣須同時改變電阻 Rset1’、Rset2’，造成調整不便情 L_setl\ Rsetf 之誤差值料錄”縣異鼓衫敎情形。 請參閱第六圖所示係習知二之電路架構，係具-AC/DC轉 m/DG細4’，輪之軸繼單At the same time, AC or DC or AC, DC input power converters can have better input power, such as the fifth riding circuit as a conventional circuit structure, the main system - AC / DC converter i, -DC/DC converter 2, and the output terminals of the two are connected with a single DG input (four) remuneration, and the secret is 12, DG/DG converter 2, the output terminals are respectively connected - the group consists of resistors RseU, R1, And the resistance is defeated, and the voltage dividing circuit composed is respectively fed back to the AC/converter 丨, D (yDc converter 2, the error amplification job, EA2, so that the borrowing money is changed to setl, Rset2, The feedback can be changed to the error amplification 丨,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, Record the situation of the county different drums. Please refer to the circuit diagram of the second in the sixth figure, the system - AC / DC to m / DG fine 4 ', the axis of the wheel
源V0，又該AC/DC轉換哭I ㈣时3、DC/DC轉換器4,輸出端共同一址 由電福4，、職成之分壓電路回授至Α__、、 5 200836460 • DC/DC轉換器4’之誤差放大疆3,、EA4，，因㈣藉由改變一 、 電組Rset4’即可改變回授至誤差放大器EA3,、EA4,電壓，故可 改進前述習知-之輸出龍設定誤差，且可具較麵整便利 性。 然而前述方式因共用一組回授分壓電路，因而當其中一 組誤差放大器⑽，或EA4，）不動作時電路將無法正常運作。 等 請參閱第七圖係習知三之電路架構，係具-AC/DC轉換 為5、一DC/DC轉換器6’，並兩者之輸出端連接具單Dc輸出 、 電源VO，又該AC/DC轉換器5,、DC/DC轉換器6，輸出端連Source V0, and the AC/DC conversion is crying I (four) 3. DC/DC converter 4, the output common address is from the electric Fu 4, and the voltage dividing circuit of the professional is fed back to Α__, 5 200836460 • DC The error of the /DC converter 4' is amplified by 3, EA4, and (4) by changing the one, the electric group Rset4' can change the feedback to the error amplifiers EA3, EA4, voltage, so the above-mentioned conventional knowledge can be improved. The output dragon sets the error and can be more convenient. However, the foregoing method shares a set of feedback voltage dividing circuits, so that when one of the sets of error amplifiers (10), or EA4, does not operate, the circuit will not operate normally. Please refer to the seventh diagram of the circuit structure of the conventional three, the system - AC / DC conversion to 5, a DC / DC converter 6 ', and the output of the two connected with a single Dc output, power VO, and AC/DC converter 5, DC/DC converter 6, output terminal
接由電阻Rset6,、R6,組成之分壓電路，並於電阻以啪，、R6, 严曰1連接誤差放大器EA5,及光搞合元件5卜61，，並該光麵合元 I 件5Γ、61’分別連接AC/DC轉換器5，、DC/DC轉換器6，之PWM 控制器，使得電阻Rset6,、誤差放大器、EA5，、光耦合元件 • 51’形成對應AC/DC轉換器5,之回路，又電阻汉6，、誤差放大 器EA5’、光耦合元件61，形成對應DC/DC轉換器6，之回路，並 可由改變一電阻Rset6,即可改變輸出電壓v〇。 , 前述方式雖然僅須改變電阻Rset6,即可改變輸出電壓 V〇，並採用光耦合元件51，、61，隔離可改善前述習知二之共 同回授電路問題，但該光耦合元件51，、61，之電流轉換比CTR 與溫度效應會增加誤差，且同時AC/DC與DC/DC之回授環 路嚮應不同，不易達成高性能要求，又因誤差放大器EA5，之 200836460 輸出位準有一定之限制，使得該電 之輸㈣串接财_ 成使岐放大器 (二個以上）之輸入電源轉換器:用以_路不適合較多 【發明内容】 ιΓΠ之目的在藉由電源細授隔離方式可並接二個或 之轉換器，並可放寬簡控制器的選擇限制。 $ j月包3至電源轉換器、—電流源隔離式回授電 Γ 4源轉換器係可具第—電源轉換器、第二電源^ 观砸、第：電源轉_ W :並該第一電源轉換器、第二電源轉換器㈣ 亚该PWM控制器連接誤差放大器輸出端，又第— 轉換㈣：細繼之輸_接具單輸 二 源隔離式回授電路連接單輸出·與第-電源轉_、第ΓΓ 源轉換器之誤差放大器輸入端，並具電流鏡電路，：二:： 電路具:-電晶體，並配合第一電源轉換器、第二電源::： 技動作需求設置對應之第二電晶體、第三電晶體，而該 =原第二電晶體、第三電晶體之6極連接，並£極連接單： 乐―、乐二電阻接地，並該電阻分別連接第一電源'轉換哭、第 二電源轉換H之誤差放大諸人端，使得單輸出_流^第一 200836460 電晶體、可調式電阻、分壓電阻之電流鏡射複製至第二電晶 體、第三電晶體’並產生相同之第―、第二電流，而該第—、 第二電流流經第二、第三電阻產生回授電壓分別回授至第—電 源轉換器、第二1源轉換器之誤差放大H，使縣由改變-可 二式私阻即可改變第―、f二電流及回授至第—電源轉換器、 第二電源轉換社誤差放大如授霞，且相互衫影響，而 若有其中-誤差放大器獨麵林會影㈣體_，又若第 -電源轉換器、第二電源轉換器選用不同參考電壓時可令第 二、第三電阻制不同對應_之阻抗值應對，使電路設計可 具更佳靈活適用性。 【實施方式】 請參閱第-圖，本發明之第—實施例具第—電源轉換哭 卜第二電源轉換nm源隔離式回授電路3，而該第— 電源轉換器丨為轉換轉換器2為DC/DC轉 換器，並該第一電源轉換器1、帛二電源轉換器2具™控^ 器11、21，並該p丽控制器U、21分別連接誤差放大器EA1、 EA2輸出端，又第一電源轉換器！、第二電源轉換器2之輸出 端連接具單輸出電源V0。 請-併參閱第-〜三圖，電流源隔離式回授電路3連接 單輸出電源VQ與第-電轉換m二電源轉換器2之誤 呈放大器EA卜EA2輸入端，並具電流鏡電路，而該電流鏡電 200836460Connected to the voltage divider circuit composed of resistors Rset6, R6, and connected to the error amplifier EA5, 光5, and the light fitting component 5b 61, and the smooth surface element I 5Γ, 61' are respectively connected to AC/DC converter 5, DC/DC converter 6, PWM controller, so that resistor Rset6, error amplifier, EA5, and optical coupling element • 51' form corresponding AC/DC converter 5, the circuit, the resistor 6, the error amplifier EA5', the optical coupling element 61, forming a loop corresponding to the DC/DC converter 6, and the output voltage v〇 can be changed by changing a resistor Rset6. In the foregoing manner, although the output voltage V〇 can be changed only by changing the resistance Rset6, and the optical coupling elements 51, 61 are used for isolation, the common feedback circuit problem of the above-mentioned conventional two can be improved, but the optical coupling element 51, 61, the current conversion ratio CTR and temperature effect will increase the error, and at the same time AC/DC and DC/DC feedback loop should be different, it is not easy to achieve high performance requirements, and because of the error amplifier EA5, the 200836460 output level has Certain restrictions, so that the power of the (four) serial connection _ into the 岐 amplifier (two or more) of the input power converter: used _ road is not suitable for more [invention] ιΓΠ purpose is carefully isolated by the power supply The mode can be connected to two or more converters, and the selection limit of the simple controller can be relaxed. $ j month package 3 to power converter, - current source isolated feedback power supply 4 source converter system can have the first - power converter, the second power supply ^ Guan, the first: power turn _ W: and the first Power converter, second power converter (4) sub-PWM controller connected to the error amplifier output, and then - conversion (four): fine succession _ splicing single-transmission two-source isolated feedback circuit connection single output · and - Power converter _, ΓΓ source converter error amplifier input, and current mirror circuit, : 2:: circuit: - transistor, and with the first power converter, the second power supply ::: technical action requirements set Corresponding to the second transistor, the third transistor, and the original transistor of the second transistor and the third transistor are connected, and the pole is connected to the single: Le-, Le-resistor is grounded, and the resistor is respectively connected A power supply 'converts the crying, the second power conversion H's error amplifies the human terminals, so that the single output _ stream ^ first 200836460 transistor, adjustable resistor, voltage divider resistor current mirror is copied to the second transistor, third The transistor 'generates the same first and second currents, and the first The second current flows through the second and third resistors, and the feedback voltage is respectively fed back to the error amplification H of the first power converter and the second source converter, so that the county can be changed by changing ―, f two currents and feedback to the first - power converter, the second power conversion agency error amplification such as xiaxia, and the influence of the mutual shirt, and if there is - error amplifier alone Lin Yingying (four) body _, and if the first - When the power converter and the second power converter select different reference voltages, the impedance values of the second and third resistors can be made different, so that the circuit design can have better flexibility and applicability. [Embodiment] Please refer to the first embodiment, the first embodiment of the present invention has a first power conversion crying second power conversion nm source isolated feedback circuit 3, and the first power converter 转换 is a conversion converter 2 It is a DC/DC converter, and the first power converter 1, the second power converter 2 has TM controllers 11, 21, and the p controllers U, 21 are respectively connected to the output terminals of the error amplifiers EA1, EA2, Another first power converter! The output of the second power converter 2 is connected to a single output power supply V0. Please - and refer to the -3rd diagram, the current source isolated feedback circuit 3 is connected to the single output power supply VQ and the first-to-electric conversion m two power converter 2 is the error amplifier EA EA2 input terminal, and has a current mirror circuit, And the current mirror electricity 200836460
路具第一電㈣Q1 ’並配合第—電源轉翻1、第二電源轉器 2回授動作需求設置對應之第二電晶體敗、第三電晶體⑽， 而及乐-电曰曰體Q1、第二電晶體Q2、第三電晶體⑽為層電 晶體’並其B極連接’且E _接單輸出電源v◦，又第一電 ‘晶體Q1之B極、C極連接，並c極串接可程式調整（亦可由^ 動或其他方式調整）阻抗之可調式電阻_及麵電阻幻接 :也；又第二電晶體Q2、第三電晶體Qkc極分別串接第二、 第三電阻R2、R3接地，並該電阻R2、R3分別連接第—電源轉 換器卜第二電源轉換器2之誤差放大器腿、⑽輸入端。 請參閱第三圖，本發明單輸出電源V0流經第一電晶體 Q卜電阻Rset、分壓電阻R1之電流挪鏡射複製至第二電 晶體Q2、第三電晶體q3，並產生相同之第一、第二電流π、 12，而該第—、第二電流η、12流經第二、第三電阻R2、R3 產生回授電壓分別’至第—電源轉換器〗、第二電源轉換器 2之決差放大& EA卜EA2，使得藉由改變—電阻Rset即可改 變第一、第二電流n、12及回授至第-電源轉換器卜第二 迅源轉換$ 2之誤差放大器㈣、回授雜卜搬， 且η、12之電流源隔離相互不受影響，因而若有其中一誤差 放大器（ΕΑ1 < ΕΑ2)獨作時亦不會影響整體動作，使得若第 电源轉換益1有輸入電源使誤差放大器彳動作，而第二 S源轉換◎ 2無輸人電源使誤差放大器不動作時第一電流 200836460 π仍不受影響，並產生回轉带 ^ 阳又屯昼·1回授至誤差放大器ΕΑ1， 使得知出電源V0具設定輪出電壓。 又若第一電源轉換器i、第一带 乐一私源轉換态2之誤差放大器 EA2選用不同參考電堡V1、V2，VI.，本發明可令第 二、第三電阻R2、R3 _不_應比例之阻抗值應對，使得 電路設計可具更佳靈活適用性。 本發明可剌二個以上之輸人電源，請參閱第四圖，本 發明第二實施例係與第—實施例相同方式，並具與第一電源轉 換器卜第二電源轉換器2、第三電源轉換器4、f四電源轉 換器5，並分別具誤差放大器EM、EA2、EA3、M4，又電麵 祕式回授電路3具第—電晶體Q1，並配合4個輸入電源具 第二電晶體Q2、第三電晶體q3、第四電晶體Q4、第五電晶體 Q5 ’又第-電晶體qi之c、β極連接，且c極串接電阻⑻七、 R1 ’且各PNP電晶體之B極連接，又第二電晶體Q2、第三電 晶體Q3、第四電晶體Q4、第五電晶體奶之〇極分別串接電2 R2、R3、R4、R5 ’並使得輸出電源v〇流經第—電晶體⑴、電 阻Rset、R1之電流Iset鏡射複製至電晶體Q2、q3、q4、奶 產生相同之第一電流II、第二電流12、第三電流13、第四電 流14 ’並使得電阻R2、R3、R4、R5產生回授電壓VFB1、VFB2、 VFB3、VFB4分別回授至誤差放大器EA1、EA2、EA3、EA4，並 只要改變一電阻Rset即可改變回授電壓VFB1、VFB2、抑助、 200836460 VFB4，可具調整便利性，且電流n、I2、I3、ί4相互不受麥 響，又若第一電源轉換器i、第二電源轉換器2、第三電源轉 換器3、第四電流轉換器4採用不同參考電壓時亦可採用電^ R2、R3、R4、R5不同比例阻抗值應對以增加電路設計靈活性 及適用性。 剛述實施例僅為本發明之例示，凡依據本發明精神及申 請專利範圍所作之均等變化及修飾亦應屬於本發明申請專 範圍之範田壽内。 、 【圖式簡單說明】 第一圖係本發明之第一實施例整體電路架構示意圖。 第二圖係本發明之第一實施例電流源隔離式回授電路示 意圖。 第三圖係本發明之第一實施例動作示意圖。 第四圖係本發明之第二實施例電路及動作示意圖。 第五圖係習知一使用二分壓電路控制回授電壓之電路示 意圖。 第六圖係習知二使用共同一分壓電路控制回授電壓之電 路示意圖。 第七圖係習知三使用光耦合元件控制回授電壓之電路示 忍圖。 【主要元件符號說明】 200836460 1第一電源轉換器11PWM控制器EA1誤差放大器 2第一電源轉換器21PWM控制器EA2誤差放大器 3電流源隔離式回授電路 31電流源隔離式回授電路 Q1第一電晶體 Q2第二電晶體Q3第三電晶體 Q4第四電晶體 Q5第五電晶體The first electric circuit of the road (4) Q1 'and the first power supply turn-over 1, the second power supply 2 feedback operation demand setting corresponding to the second transistor defeat, the third transistor (10), and the music-electric body Q1 The second transistor Q2, the third transistor (10) is a layer transistor 'and its B pole is connected' and the E_ is connected to the output power supply V◦, and the first electric 'crystal Q1 is connected to the B pole and the C pole, and c Extremely series programmable (can also be adjusted by ^ or other means) adjustable impedance _ and surface resistance phantom: also; second transistor Q2, third transistor Qkc pole connected in series second, The three resistors R2 and R3 are grounded, and the resistors R2 and R3 are respectively connected to the error amplifier leg and the (10) input terminal of the second power converter 2 of the first power converter. Referring to the third figure, the single output power supply V0 of the present invention flows through the first transistor Q, the resistor Rset, and the voltage dividing resistor R1, and the current mirror is copied to the second transistor Q2 and the third transistor q3, and the same is generated. The first and second currents π, 12, and the first and second currents η, 12 flow through the second and third resistors R2, R3 to generate a feedback voltage respectively to the first to the power converter, and the second power conversion The difference between the 2 and the EA EA2 is such that the first and second currents n, 12 and the feedback to the second power converter can be changed by changing the resistance Rset. Amplifier (4), feedback miscellaneous, and the current source isolation of η, 12 are not affected by each other, so if one of the error amplifiers (ΕΑ1 < ΕΑ2) is used alone, it will not affect the overall action, so that if the first power conversion Yi 1 has input power to make the error amplifier 彳 action, and the second S source converts ◎ 2 without input power supply, the first current 200836460 π is still unaffected when the error amplifier does not work, and the slewing band is generated ^ 阳·屯昼·1 Feedback to the error amplifier ΕΑ1, so that the power supply V0 has a setting Voltage. If the first power converter i, the first error amplifier EA2 of the private-to-source conversion state 2 uses different reference electric castles V1, V2, VI., the present invention can make the second and third resistors R2, R3 _ _ should be proportional to the impedance value, so that the circuit design can be more flexible and applicable. The present invention can be used for more than two input power sources. Please refer to the fourth figure. The second embodiment of the present invention is the same as the first embodiment, and has the first power converter and the second power converter 2. Three power converters 4, f four power converters 5, and respectively have error amplifiers EM, EA2, EA3, M4, and electric surface secret feedback circuit 3 with the first transistor Q1, and with four input power supplies The second transistor Q2, the third transistor q3, the fourth transistor Q4, and the fifth transistor Q5' are connected to the c- and β-poles of the first transistor, and the c-pole is connected in series with the resistor (8), R1' and each PNP. The B pole of the transistor is connected, and the drains of the second transistor Q2, the third transistor Q3, the fourth transistor Q4, and the fifth transistor milk are respectively connected in series with 2 R2, R3, R4, R5' and output The power source v 〇 flows through the first transistor (1), the resistors Rset, and R1, and the Iset mirrors the replica to the transistors Q2, q3, and q4, and the milk generates the same first current II, second current 12, third current 13, and Four currents 14' and the feedback voltages VFB1, VFB2, VFB3, VFB4 generated by the resistors R2, R3, R4, and R5 are respectively fed back to the error amplifier E A1, EA2, EA3, EA4, and only change the resistance Rset to change the feedback voltage VFB1, VFB2, suppression, 200836460 VFB4, can be adjusted convenience, and the currents n, I2, I3, ί4 are not affected by the wheat In addition, if the first power converter i, the second power converter 2, the third power converter 3, and the fourth current converter 4 use different reference voltages, different ratios of impedances of the resistors R2, R3, R4, and R5 may be used. Value response to increase circuit design flexibility and applicability. The following examples are merely illustrative of the invention, and equivalent variations and modifications in accordance with the spirit of the invention and the scope of the claims are intended to be within the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS The first drawing is a schematic diagram of the overall circuit architecture of the first embodiment of the present invention. The second drawing is a schematic diagram of a current source isolated feedback circuit of the first embodiment of the present invention. The third figure is a schematic view of the operation of the first embodiment of the present invention. The fourth figure is a schematic diagram of the circuit and operation of the second embodiment of the present invention. The fifth figure is a schematic diagram of a circuit that uses a two-divider circuit to control the feedback voltage. The sixth figure is a schematic diagram of a circuit for controlling the feedback voltage using a common voltage dividing circuit. The seventh figure is a circuit diagram for controlling the feedback voltage using an optical coupling element. [Main component symbol description] 200836460 1 first power converter 11 PWM controller EA1 error amplifier 2 first power converter 21 PWM controller EA2 error amplifier 3 current source isolated feedback circuit 31 current source isolated feedback circuit Q1 first Transistor Q2 second transistor Q3 third transistor Q4 fourth transistor Q5 fifth transistor
Rset、Rl、R2、R3 電阻 VO單輸出電源 電流 Iset、II、12、13、14 VFB卜 VFB2、VFB3、VFB4 回授電壓 V1、V2參考電壓 丨 4弟二電源轉換器 5第四電源轉換器 1 ’AC/DC轉換器 2，CD/DC轉換器 ΕΑΓ、EA2’誤差放大器 Rsetl’、Rl’、Rset2’、R2’電阻 3’AC/DC 轉換器 4’DC/DC 轉換 ΕΑ3’、ΕΑ4’誤差放大器 Rset4’、R4’電阻 5’AC/DC轉換器 6，DC/DC轉換器 EA5’誤差放大器Rset, Rl, R2, R3 Resistor VO Single Output Supply Current Iset, II, 12, 13, 14 VFB Bu VFB2, VFB3, VFB4 Feedback Voltage V1, V2 Reference Voltage 丨 4 Dielectric Converter 5 Fourth Power Converter 1 'AC/DC converter 2, CD/DC converter ΕΑΓ, EA2' error amplifier Rsetl', Rl', Rset2', R2' resistor 3' AC/DC converter 4'DC/DC converter ΕΑ3', ΕΑ4' Error amplifier Rset4', R4' resistor 5' AC/DC converter 6, DC/DC converter EA5' error amplifier
Rset6’、R6’電阻 51，、61，光耦合元件 12Rset6', R6' resistor 51, 61, optical coupling element 12