M416272 五、新型說明： 【新型所屬之技術領域】 本創作涉及電路領域’更具體地涉及一種初級側反饋式的返馳轉換電 源電路。 【先前技術】 現在全球都在節能減碳，綠色能源更是大勢所趨，轉換電源或充電器 對更低待機功耗(例如，小於50mW)及更低成本提出了更高的技術要求。原 來的設計均採用有光耦有次級基準穩壓器的次級反饋來控制工作週期從而 控制輸出電壓的方法，成本高，電路板尺寸大。 【新型内容】 、鑑於以上_題，本創作提出了—種採肋級側反饋方式的返驰轉換 電源電路。 、 根據本創作的一個實施例的初級側反饋式返馳轉換電源電路包括交流 整流電路、電磁干擾濾波電路、反饋電路、返轉換電路、輸出整流= =路、以及控織路。其中，交流整流電路的輸人端與交流電源相連^， =端與電斜題波電路輯人端㈣接；電針觀波魏的輸入端 ^父流整流電路的輸出端相連接，輸出端與返 入端相連接;反饋電路的輪入端與返驰轉換電路的輪= 端與控制電路的輸入端相連接；返驰轉換電路的輸入端與電磁干 擾，皮J路的輸出端和控制電路的輸出端相連接，輸 =電2軌滅跨錢轉換電路巾现顏器之初 ==慮波電路的輸入端與返轉換電路的輸出端相連= ==控制電路的輸入端與電磁干擾滤波電路的輸出: ==連:及返驰轉換電路的輸出端相連接，輸出端與返馳轉 入端整流渡，路的輸人端、以及控制電路的輸人端 ，據士創刺秘辆換路線了目前的技術瓶 於現有的電源電路來說周邊零件少、成本低、 頸，並且相對 且待機功耗低 3 M416272 【實施方式】 “以下將詳細描縣鋪各財_彳粮㈣繼實 涵盍了許多具體細節，以便提供對本 下的描述 技術人員來說顯而易見的是，本創作可在不。但是，對於本領域 =創作更清楚的理解。本創作絕====來提 替:離本創作之精神的前提下涵蓋了相關元素或部件的飾修改、 妒姑ΓΓί作提出了翻_反饋式的返轉換電源電路。第1圓表示了 =康2作實施例之初級側反饋式返驰轉換電源電路的方塊圖。如第;圖 二;：==奐轉電:雷電路包括交 制電路F，並且返驰轉換還包括^電^出G整流滤波電路E、以及控 擾遽^路流電山^的輸入端與交流電源相連接’輸出端與電磁干M416272 V. New description: [New technical field] This creation relates to the field of circuits. More specifically, it relates to a flyback conversion power supply circuit of a primary side feedback type. [Prior Art] Nowadays, energy conservation and carbon reduction are all around the world, and green energy is the trend. The conversion power supply or charger puts forward higher technical requirements for lower standby power consumption (for example, less than 50mW) and lower cost. The original design uses a secondary feedback with an optocoupler with a secondary reference regulator to control the duty cycle to control the output voltage, resulting in high cost and large board size. [New content] In view of the above _ questions, this creation proposes a flyback conversion power supply circuit with a rib-level side feedback method. The primary side feedback type flyback conversion power supply circuit according to an embodiment of the present invention includes an AC rectification circuit, an electromagnetic interference filter circuit, a feedback circuit, a return conversion circuit, an output rectification == path, and a control weave. Wherein, the input end of the AC rectification circuit is connected to the AC power source, the ^ terminal is connected to the electric oblique wave circuit (4); the input end of the electroacupuncture Wei Wei input terminal is connected with the output end of the parent current rectifier circuit, and the output end is connected Connected to the return end; the wheel-in end of the feedback circuit and the wheel=end of the flyback converter circuit are connected to the input end of the control circuit; the input end of the flyback converter circuit and the electromagnetic interference, the output end of the J-channel and the control The output of the circuit is connected, the input of the circuit is connected to the output of the return circuit. === The input of the control circuit and the electromagnetic interference The output of the filter circuit: == even: and the output end of the flyback conversion circuit is connected, the output end and the flyback turn-in end are rectified, the input end of the road, and the input end of the control circuit, according to Shichuang The current technical bottle has a small number of peripheral parts, low cost, neck, and relatively low standby power consumption in the existing power supply circuit. 3 M416272 [Embodiment] "The following will describe the county's various wealth _ 彳 grain (4) Following the actual details, so It will be apparent to those skilled in the art that this creation may not be. However, a clearer understanding of the field = creation. This creation is absolutely ==== to replace: under the premise of the spirit of the creation Covering the modification of related elements or components, 妒 ΓΓ ΓΓ 提出 提出 提出 提出 提出 提出 提出 反馈 反馈 反馈 反馈 反馈 反馈 反馈 反馈 反馈 反馈 反馈 反馈 反馈 反馈 反馈 反馈 反馈 反馈 反馈 反馈 反馈 反馈 反馈 反馈 反馈 反馈 反馈 反馈 反馈 反馈 反馈 反馈 = = = = = = As shown in Fig. 2; Fig. 2;:==奂奂: The lightning circuit includes the switching circuit F, and the flyback conversion also includes the input of the G-rectifying filter circuit E and the input of the disturbance 遽^路流电山^ The end is connected to the AC power supply.
電路Α的松愉相連接，電磁干擾遽波電路Β的輸入端與交流整流 輸出端相連接，輸出端與返馳轉換電路d的輸入端和控制電路F 輸出端二:路反F饋的電:入：^與返 擾B ; _轉換電_的輸入端與電磁干 C ^翰入戚、和控制電路F的輸出端相連接，輸出端與反饋電路 J 1流濾波電路Ε的輸入端、以及控制電路F的輸入端相 ΐϊ端ΐΐΐΓ波電路E的輸人端與返馳轉換電路D的輸出端相連接’ 輪相連接；並且控制電路F的輸入端與電磁干擾渡波電路B的 轉娜罐㈣相連接，輸 路的表示了轉摘作·"個實施例之初級麻饋式返馳轉換電源電 糙揸喷·如第2圖所示’根據本創作一個實施例的初級側反饋式返馳 波電路:、以及控=Γ反饋電路4、返驰轉換電路5、輸出整流滤 在第2圖所不的實關巾，交流整流電路丨包括紐娜聰)和整流 4 M416272 二極管，主要侧是對交流電壓整流^其中H極管的數量最少 可以是-個’最多可以是八個。保險絲可以用保險絲電阻、繞線電阻、或 電感來代替。 在第2圖所示的實施财，題舰電路2包括、高壓電解電容、 以及靜電放電(deCtrostatlc discharge，励)電p且，主要作用是抑制題及整 流後遽波。根據不同的應用，麵遽波電路中可用兩個電感，也可以只用 -個共模電感m—個高壓電解電容；並且在有些場合_也可不用 ESD放電電阻幻。第3圖表示了歷濾波電路的多種接法，其中幻為 ESD放電電阻，其可串聯或並聯以達到所需的電阻值，也可以取消。 在第2圖所不的實施例中，吸收電路3可^根據不同的系統要求而變 化。進-步地，吸收電路也可以根據不同的市場要求而可完全取消，從而 進一步降低成本。第4圖表示了吸收電路的多種接法。 在第2圖所示的實施例中，反饋電路4包括取樣電阻，主要作用是利 電阻將通過變壓器的初級供電繞組按比例感應出的次級交流電歡反 愚貝Γ且ί的交流電壓)送到控制電路7。從原理上看沒有絲及纽基準穩 =阻Γ 了成本。取樣電阻可以串聯或並聯的方式達到所需要 搞普在ϋΓ的實施例令，返驰轉換電路5包括返驰變廢器、開關三 返馳變壓雜電阻，主要作収將交流整流後的高壓直流電壓通過 聯的方式達到所需要的電阻值。 尺业 和清福實施财，輸出整域波電路6包括輸出整流二極管 ’以’夺®主要部分。針對不同的 路或者共模濾波電路來改善=== ，種加強讀出整流奴電路_ 了 串聯達到所需的電阻值。 ㈣夕個電阻並聯或 她Γ 2Γ标的實施财，控制電路7的主要裝置是-顆脈衝宽户調 i或類似功能的控制晶片，該晶片(IQ總共包含六個功能接腳，分別 5The circuit is connected to the loose connection, the input end of the electromagnetic interference chopper circuit is connected to the AC rectification output terminal, the output terminal and the input terminal of the flyback conversion circuit d and the output terminal of the control circuit F are two: the reverse F feed : input: ^ and return interference B; _ conversion electric _ input terminal and electromagnetic dry C ^ John, connected to the output of the control circuit F, the output end and the feedback circuit J 1 flow filter circuit Ε input, And the input end of the control circuit F is connected to the output end of the chopper circuit E and the output of the flyback converter circuit D; and the input end of the control circuit F and the electromagnetic interference wave circuit B The tanks (four) are connected, and the transmissions are referred to as "the primary heave-feedback converter power supply of the embodiment". As shown in Fig. 2, the primary side feedback according to an embodiment of the present creation The flyback wave circuit:, and the control = Γ feedback circuit 4, the flyback conversion circuit 5, the output rectification filter is not the actual closing wiper in Fig. 2, the AC rectification circuit 丨 includes Nuna Cong) and the rectification 4 M416272 diode. The main side is the rectification of the AC voltage ^the number of H-tubes Less can be - a 'can be up to eight. The fuse can be replaced by a fuse resistor, wirewound resistor, or inductor. In the implementation shown in Fig. 2, the ship's circuit 2 includes a high-voltage electrolytic capacitor, and an electrostatic discharge (deC), and the main function is suppression and chopping after rectification. Depending on the application, two inductors can be used in the face-wave circuit, or only one common-mode inductor m-a high-voltage electrolytic capacitor can be used; and in some cases, the ESD discharge resistor can be used instead. Figure 3 shows the various connections of the filter circuit, in which the illusion is an ESD discharge resistor that can be connected in series or in parallel to achieve the desired resistance value, or it can be eliminated. In the embodiment of Fig. 2, the absorbing circuit 3 can be varied according to different system requirements. Further, the snubber circuit can be completely eliminated according to different market requirements, thereby further reducing costs. Figure 4 shows the various connections for the snubber circuit. In the embodiment shown in FIG. 2, the feedback circuit 4 includes a sampling resistor, and the main function is that the secondary resistor is proportionally induced by the primary power supply winding of the transformer, and the alternating current voltage is sent. Go to control circuit 7. In principle, there is no silk and New Zealand benchmark stability = hindering costs. The sampling resistors can be connected in series or in parallel to achieve the required embodiment. The flyback conversion circuit 5 includes a flyback converter, a switch three returning variable voltage resistors, and the main high voltage after AC rectification. The DC voltage is connected to achieve the required resistance value. The rule industry and the Qingfu implementation of the wealth, the output of the entire domain wave circuit 6 includes the output rectifier diode ‘to win the main part. For different circuit or common mode filter circuits to improve ===, a kind of enhanced readout rectifier circuit _ has reached the required resistance value in series. (4) Simultaneous resistors are connected in parallel or in the implementation of the standard. The main device of the control circuit 7 is a pulse-width wide-tuning or similar-function control chip. The chip contains a total of six function pins, respectively.