M413100 五、新型說明： 【新型所屬之技術領域】 ^創^歩及-種降Μ電源電路架構，尤其涉及_種 率、低待機功耗、低成本特性的電磁爐電源方案的降麼電源電路結向構效 【先前技術】 隨著人類财祕天然資源，使得生活魏被 臨能源不足的壓力，因而節能減碳的需求已迫在眉睫重時面 器設備及電子產品，必簡其電轉換轉行優化於電 耗’實現更高的轉換效率及更低的靜態待機功耗優 降低此源消 -般，目前的電磁爐供電方㈣遍制設計簡單的· 疋市面上返馳式開關電源的缺點在於轉換效率不高 。但 纽憎需的零件數目料、龍太大而 導致系統成本及生產成本居高不下，6無法再献各種新 及安全規範。因此，需要一種新式的降屡電源 、bj準 片進行精確的開關控制以提供穩定的輪评外邱=用控制晶 磁爐，並解決上述的問題。 <的翰出電源給外部電氣裝置，如電 【新型内容】 曰古作的主要目的在於提供—種降壓電源電路架構，用於能提供 ，、同效率、絲機祕、域本雛的電賴電源方案。、、 it達到^目的，本創作提供的㈣電源電路架構包括輸入整 tits f開關單元、輸出遽波穩料元、回饋採樣供電單元 ΐ曰曰^ 整流;慮波單元，將外部輸入的交流輸入電源 轉換成第-域’控制晶片連接第—信號以及第四信號， 信降單元’連接第二信號並產生第一随輸出信號以及第 二輪出遽波穩壓單元，連接並調節第一降壓輸出信號以及第三 3 M413100 信號，且產生第二降壓輸出信號，該第二降壓信號以及第一降壓信號 連接外部負載裝置；回饋採樣供電單元，接收第一降壓輸出信號產生 第四信號，且第一信號經啟動電阻而連接第四信號；以及控制晶片， 具有電源端、汲極端、接地端、補償端以及電流感測端，且該電源端 連接第四信號，該汲極端連接第一信號，該接地端連接第二信號，該 補償端經補償電容而連接第二信號，該電流感測端經電流感測電阻而 連接第二信號。M413100 V. New description: [New technology field] ^Chuang^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ To the structure of the structure [previous technology] With the natural resources of human resources, the life Wei is under the pressure of insufficient energy, so the demand for energy saving and carbon reduction is imminently heavy-duty equipment and electronic products, it must be optimized The power consumption' achieves higher conversion efficiency and lower static standby power consumption. This source is eliminated. The current induction cooker power supply (4) is simple in design. · The disadvantage of the flyback switching power supply on the market is the conversion efficiency. not tall. However, the number of parts required by New Zealand is too large, resulting in high system cost and production cost. 6 No new and safe specifications can be offered. Therefore, there is a need for a new type of power supply, bj-sequence for precise switching control to provide a stable round-robin = control of the crystal furnace, and to solve the above problems. <Han power supply to external electrical devices, such as electricity [new content] The main purpose of the ancient work is to provide a kind of step-down power supply circuit architecture, which can be used to provide, the same efficiency, silk machine secret, domain Electric power supply scheme. (4) The power supply circuit architecture provided by the present invention includes an input tits f switch unit, an output chopper stabilized element, a feedback sampling power supply unit, a rectification, a wave unit, and an external input AC input. The power source is converted into a first-domain 'control wafer connection first-signal and a fourth signal, and the signal-down unit' connects the second signal and generates a first output signal and a second round-out chopper regulator unit to connect and adjust the first drop. Pressing the output signal and the third 3 M413100 signal, and generating a second step-down output signal, the second step-down signal and the first step-down signal are connected to the external load device; feeding back the sampling power supply unit, and receiving the first buck output signal to generate the first a fourth signal, wherein the first signal is connected to the fourth signal via a starting resistor; and a control chip having a power terminal, a 汲 terminal, a ground terminal, a compensation terminal, and a current sensing terminal, and the power terminal is connected to the fourth signal, the 汲 terminal Connecting a first signal, the ground terminal is connected to the second signal, and the compensation end is connected to the second signal via a compensation capacitor, and the current sensing terminal is connected to the current sensing resistor Connect the second signal.
在上述，壓電源電路架構中’所述輸入整流濾波單元包括一保險 絲變阻器、-共模渡波電感、一前級電容、一後級電容、一整流 電橋以及-輸入遽波電容’該保險絲的一端連接該第一交流端，該保 險絲的另-端連接該變阻器的—端，該變阻器的另—端連接該第二交 流端，且該保險絲與該變阻器串接，且該保險絲與該變阻器的 二===級電谷’该共模遽波電感的一側連接該前級電容，而 财波電感㈣—側連接該後級電容，該整流電橋包括—第一二 極體、一第二二極體、一第三二極體以及四 :負ΪΪΓίΓ極體的—正極，該第三二極體的一ϋ 體=及該第三二極體 第二二極體In the above, the input power rectification filtering unit includes a fuse varistor, a common mode wave inductor, a pre-capacitor, a post-capacitor, a rectifying bridge, and an input chopper capacitor. One end is connected to the first AC end, the other end of the fuse is connected to the end of the varistor, the other end of the varistor is connected to the second AC end, and the fuse is connected in series with the varistor, and the fuse and the varistor are Two === level electric valley 'the side of the common mode chopper inductor is connected to the front stage capacitor, and the financial wave inductance (four) - side is connected to the rear stage capacitor, the rectifying bridge includes - the first diode, one a diode, a third dipole, and a fourth: a positive electrode, a positive electrode, a third body of the third diode, and a second diode of the third diode
信號在容二負==正極連接該第-體以及-變壓ί電:=::视降壓開關單元包括-續流二極 側，且該髓峨—側跨接_及一第二 該變壓賴：物_輸出信號， 在上述降壓電源雷1初德占 · ^乐一15號。 二極體、-祕穩壓H、_第波觀單元包括-整流 -第三輸出毅電容、一第一 ϋ慮ϋ谷、-第二輸出遽波電容、 載，該整流二極體的—正極載以及一第三假負 °，第號，该第一假負载的一端連 4 M413100 2第-降壓輸ίϋ錢，該第二假負載以及輸城波電容並聯 跨接該第-降壓輪出信號及該祕接地，該第—假負載的另—端連接 該^二輸出纽電容的-正極、該整流二極體的—負極以及該線性穩 ，器的-輸人端’該第二輸域波電容的—負極連接該系統接地，該 線性穩麵的ϋ端連接紗二随輸紐號，且麟㈣壓器的 -接地端連接該系統接地，該第三假貞载以及該第三輸雌波電容並 聯跨接該第二降壓輸出信號及該系統接地。 古在上述降壓電源電路架構中，所述回饋採樣供電單元包括一回饋 整流二極體、1鋪波電容以及—啟動電阻，該_整流二極體的 了正，連接該第一降壓輸出信號，該回饋整流二極體的一負極連接該 第二信號’細姆波電容的—正極連接該第四錢，_回饋遽波 電谷的一負極連接該第二信號，該啟動電阻的一端連接該第四信號， s亥啟動電阻的另一端連接該第一信號。 在上述降壓電源電路架構中，所述控制晶片為一 ΟΒ2226晶片， 且該ΟΒ2226晶片為一脈寬調制(pwM)功率開關晶片，該〇Β2226晶 片的》及極端為一内部功率金屬氧化物半導體場效應電晶體如〇弧丁） 的及極’該^B2226晶#的電源端及電流感測端是經過該〇B2226晶 片的内部運算後以調節該内部M〇SFET的導通時間，藉以控制輸出 電壓穩定。 因此’本創作的降壓電源電路架構的有益效果是能克服目前的技 術瓶頸’提供具高效率、低待機功耗、低成本特性的電源方案，尤其 適合供電給如電磁爐的外部負載裝置。 【實施方式】 以下將對本創作以示範性實施的方式做更詳細的說明，以使熟悉 本領域的技術人員在研讀本綱書後能據以實施。 參考圖1 ’圖1為本創娜壓電源電路架構的示意圖。如圖1所 不’本創作的降壓電源電路架構1包括輸入整流滤波單元1〇、控制 晶片2〇、降壓開_單元3〇、輸出遽波穩壓單元4〇以及回饋採樣供電 5 M413100 單元50，用於將外部輸入的交流輸入電源VAC轉換成穩定的第一降 壓輸出信號VOl及第二降壓輸出信號V02。 交流輸入電源VAC具有第一交流端VAC+以及第二交流端 VAC- 〇 輪入整流濾波單元10將交流輸入電源VAC轉換成第一信號 VI ’控制晶月20連接第一信號VI並產生第二信號V2，降壓開關單 兀30連接第二信號V2並產生第一降壓輸出信號v〇l以及第三信號 V3，輸出遽波穩壓單元40連接並調節第一降壓輸出信號ν〇ι以及 第二信號V3，且產生第二降壓輸出信號v〇2，回饋採樣供電單元50 接收第一降壓輸出信號VOl並產生第四信號V4，且該第一信號V1 經啟動電阻RD而連接該第四信號V4。 控制晶片20具有電源端VDD、汲極端DRAIN、接地端GND、 補償端CMP以及電流感測端CS ,其中電源端vdd連接第四信號 V4 ’汲極端drain連接第一信號V卜接地端GND連接第二信號 V2，補償端CMP經補償電容CC而連接第二信號V2，電流感測端 cs經電流感測電阻rCS而連接第二信號V2。 因此，本創作可將第一降壓輸出信號V01以及第二降壓輸出信 號V02連接並供電給外部負載裝置(圖中未顯示），比如電磁爐，藉以 達到高效率、低待機功耗、低成本的目的。 參考圖2，圖2為本創作輸入整流濾波單元的示意圖。輸入整流 濾波單元10包括保險絲FUSE '變阻器MOV、共模濾波電感u、前 級電容CX卜後級電容CX2、整流電橋BD1以及輸入濾波電容C1 ’ 其中保險絲FUSE的一端連接第一交流端VAC+，保險絲FUSE的另 一端連接變阻器MOV的一端，變阻器肘〇¥的另一端連接第二交流 端VAC- ’且保險絲FUSE與變阻器MOV串接，且保險絲FUSE與 變阻器MOV的串接點並聯連接前級電容CX1，共模濾波電感u的 —側連接前級電容CX1，而共模濾波電感L1的另一側連接後級電容 CX2 〇 整流電橋BD1包括第一二極體DB1、第二二極體DB2、第三二 極體DB3以及第四二極體DB4,其中第一二極體DB1的負極連接第 6 M413100 二二極體DB2的正極，第三二極體DB3的負極連接第四二極體DB4 的正極，且第一二極體DB1的負極以及第三二極體DB3的負極並聯 連接後級電容CX2，而第一二極體DB1的正極以及第三二極體DBj 的正極連接系統接地，第二二極體DB2的負極以及第四二極體DB4 的負極輸出第一信號，輸入濾波電容Cl跨接第一信號Vl以及系 接地® 參考圖3,圖3為本創作降壓開關單元的示意圖。如圖3所示， 降壓開關單元30包括續流二極體D2以及變壓器T1，其中續漭:，The signal is in the second negative == positive pole connected to the first body and -transformed ί electric:=:: as the buck switch unit includes - freewheeling diode side, and the medullary side - side span _ and a second Variable pressure 赖: material _ output signal, in the above-mentioned step-down power supply Lei 1 Chu Dezhan········ The diode, the -Frequently regulated H, _ the first wave-viewing unit includes - a rectification - a third output 毅 capacitance, a first ϋ ϋ 、, a second output chopper capacitance, a load, the rectifying diode - The positive load and a third negative negative °, the number, one end of the first dummy load is connected to the 4 M413100 2 first-buck, the second dummy load and the power wave capacitor are connected in parallel to the first-buck The turn-off signal and the secret ground, the other end of the first-false load is connected to the positive pole of the ^2 output capacitor, the negative pole of the rectifier diode, and the linear stable, the input end of the device The grounding capacitor of the second transmission domain is connected to the grounding of the system, and the end of the linear stable surface is connected with the number of the yarn, and the grounding end of the (four) voltage transformer is connected to the grounding of the system, and the third false load and the The third female wave capacitor is connected in parallel across the second step-down output signal and the system is grounded. In the above-mentioned step-down power supply circuit architecture, the feedback sampling power supply unit includes a feedback rectifier diode, a 1 wave capacitor, and a start resistor. The _rectifier diode is positive and connected to the first buck output. a signal, a negative electrode of the feedback rectifier diode is connected to the second signal 'the fine wave capacitor' - the positive pole is connected to the fourth money, and a negative pole of the _ feedback chopper electric valley is connected to the second signal, one end of the starting resistor The fourth signal is connected, and the other end of the s start resistor is connected to the first signal. In the step-down power supply circuit architecture, the control chip is a 2226 chip, and the ΟΒ 2226 chip is a pulse width modulation (pwM) power switch chip, and the 〇Β 2226 chip is extremely an internal power metal oxide semiconductor. The power supply terminal and the current sensing terminal of the field effect transistor such as 〇 丁 ) 该 该 该 该 该 该 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 The voltage is stable. Therefore, the beneficial effect of the proposed step-down power supply circuit architecture is to overcome the current technical bottlenecks. A power supply solution with high efficiency, low standby power consumption, and low cost characteristics is provided, and is particularly suitable for supplying power to an external load device such as an induction cooker. [Embodiment] Hereinafter, the present invention will be described in more detail in an exemplary manner, so that those skilled in the art can implement it after studying this text. Referring to FIG. 1 ', FIG. 1 is a schematic diagram of the circuit structure of the Cynergy power supply. The step-down power supply circuit architecture 1 of the present invention includes an input rectification and filtering unit 1〇, a control chip 2〇, a buck-opening unit 3〇, an output chopper voltage stabilizing unit 4〇, and a feedback sampling power supply 5 M413100 The unit 50 is configured to convert the external input AC input power VAC into a stable first buck output signal VO1 and a second buck output signal V02. The AC input power source VAC has a first AC terminal VAC+ and a second AC terminal VAC- 〇 wheeled rectification filtering unit 10 converts the AC input power source VAC into a first signal VI' to control the crystal moon 20 to connect the first signal VI and generate a second signal V2, the buck switch unit 30 is connected to the second signal V2 and generates a first buck output signal v〇1 and a third signal V3, and the output chopper regulator unit 40 is connected and adjusts the first buck output signal ν〇ι and a second signal V3, and a second step-down output signal v〇2, the feedback sampling power supply unit 50 receives the first buck output signal VO1 and generates a fourth signal V4, and the first signal V1 is connected via the starting resistor RD The fourth signal V4. The control chip 20 has a power terminal VDD, a 汲 terminal DRAIN, a ground GND, a compensation terminal CMP, and a current sensing terminal CS, wherein the power terminal vdd is connected to the fourth signal V4 '汲 extreme drain connection first signal V 卜 ground GND connection The second signal V2, the compensation terminal CMP is connected to the second signal V2 via the compensation capacitor CC, and the current sensing terminal cs is connected to the second signal V2 via the current sensing resistor rCS. Therefore, the present invention can connect the first buck output signal V01 and the second buck output signal V02 to an external load device (not shown), such as an induction cooker, thereby achieving high efficiency, low standby power consumption, and low cost. the goal of. Referring to FIG. 2, FIG. 2 is a schematic diagram of an input input rectification filtering unit. The input rectification and filtering unit 10 includes a fuse FUSE 'varistor MOV, a common mode filter inductor u, a pre-capacitor CX, a post-capacitor CX2, a rectifying bridge BD1, and an input filter capacitor C1 '. One end of the fuse FUSE is connected to the first AC terminal VAC+, The other end of the fuse FUSE is connected to one end of the varistor MOV, the other end of the varistor elbow is connected to the second AC terminal VAC-' and the fuse FUSE is connected in series with the varistor MOV, and the fuse FUSE is connected in parallel with the series connection point of the varistor MOV. CX1, the common mode filter inductor u is connected to the front capacitor CX1, and the other side of the common mode filter inductor L1 is connected to the rear capacitor CX2. The rectifying bridge BD1 includes the first diode DB1 and the second diode DB2. The third diode DB3 and the fourth diode DB4, wherein the cathode of the first diode DB1 is connected to the anode of the sixth M413100 diode DB2, and the cathode of the third diode DB3 is connected to the fourth diode. The anode of DB4, and the cathode of the first diode DB1 and the cathode of the third diode DB3 are connected in parallel to the capacitor CX2, and the anode of the first diode DB1 and the anode of the third diode DBj are grounded. , the first The negative pole of the diode diode DB2 and the cathode of the fourth diode DB4 output the first signal, and the input filter capacitor C1 is connected to the first signal V1 and the grounding ground. Referring to FIG. 3, FIG. 3 is a schematic diagram of the step-down switching unit of the present invention. . As shown in FIG. 3, the buck switch unit 30 includes a freewheeling diode D2 and a transformer T1, wherein continued:
體02的正極連接系統接地，續流二極體D2的負極連接第一LThe positive connection system of body 02 is grounded, and the negative pole of freewheeling diode D2 is connected to the first L
V2 ’而變壓器T1具有第一側以及第二側，且變壓|| T1的第一相= 接第二信號V2以及第一降壓輸出信號，變壓器T1的第二側具 -端以及第二端’第二側的第—端連接系統接地，第二 接第三信號V3。 叫第—鈿連 一參考圖4,圖4為本創作輸出濾波穩壓單元的示意圖。如圖4所 不，輸出濾波穩壓單元40包括整流二極體D3、線性穩壓器78L〇5、 崎波電容C4、第二輸出紐電容C5、第三輪出滤波電容 C6、第一假負載R4、第二假負載R5以及第三假負載你^V2' and the transformer T1 has a first side and a second side, and the first phase of the transformer || T1 = the second signal V2 and the first step-down output signal, the second side of the transformer T1 - the second and the second The first end of the second side is connected to the grounding system, and the second end is connected to the third signal V3. Referred to as the first - 钿 一 a reference to Figure 4, Figure 4 is a schematic diagram of the output filter regulator unit. As shown in FIG. 4, the output filter regulator unit 40 includes a rectifier diode D3, a linear regulator 78L〇5, a saturating capacitor C4, a second output capacitor C5, a third output filter capacitor C6, and a first dummy. Load R4, second dummy load R5 and third dummy load you ^
整流二極體D3的正極連接第三信號V3，第一假負載r 連接第-降壓輸出信號VCH，第二假負載R5以及第—輪 C4並山聯跨接第—降壓輸出信號v〇1及系統接地，第—假=皮二 ^端連接第二輸出遽波電容C5的一端、整流二極體D3的以 及線性78L05的-輸人端，第二輸雌波電容C5的另一端以 觀器刪5的接地端連接系統接地，線性麵器劃5的 ^端連接第二關輪出信號v〇2，第三假負載R6以及第三輸出 滤波電容C6並聯跨接第二降壓輸出信號v〇2及系統接地第 則關輸出信號VC)1可為+i8v，而第二_輸出信號 為+ v，且線性穩壓器78L05具有+5V穩壓功能。 ^開關單元3G可針對不同的輸出紋波要求，進—步包括冗型 滤波電路或者共難波電路，以改善瀘波效應。 參考圓5 ’圖5為本創作回饋採樣供電單元的示意圖。如圖5所 7 M413100 示，回饋採樣供電單元5G包括回饋整流二極體m 容㈣雜流二鋪D1的正極連接第—降驗出信號^电 極^ D1的㈣連接第四信號V4，回饋遽波電容Q的正 =連接第四城V4，_饋舰電容C3的負極端連接第二信號 上述的控制晶月20可利用商品化的〇B2226晶片而實 (^2226晶片為PWM功率開關晶片，其中沒極端為内部功 率MOSFET的没極，電源端伽及電流感測端cs經過〇B2226晶 電壓穩定 熟 本創作 運算後，可調節内部聰取的導通時間，藉以控制輸出 :德疋〇 熟，本領域技術人員在不偏離如職φ請專利範财所定義的 作範圍下’將會想到域觸示及說_實施例而修改及改變。 【圖式簡單說明】 圖1為本創作實施例中降壓電源電路架構的示意圖； 圖2為本瓣實關t輸人整m單元的示意圖； 圖3為本創作實施例中降壓開關單元的示意圖； 圖4為本創作實施例中輸出濾波穩壓單元的示意圖；以及 圖5為本創作實施例中回饋採樣供電單元的示意圖。 【主要元件符號說明】 10 輸入整流濾波單元 20 控制晶片 30 降壓開關單元 40 輸出濾波穩壓單元 50 回饋採樣供電單元 8The anode of the rectifier diode D3 is connected to the third signal V3, the first dummy load r is connected to the first step-down output signal VCH, the second dummy load R5 and the first wheel C4 are connected to the first step-down output signal v〇 1 and system grounding, the first - false = leather two end is connected to one end of the second output chopper capacitor C5, the rectifying diode D3 and the linear 78L05 - the input end, the other end of the second female capacitor C5 is The grounding end of the viewer is connected to the grounding of the system, the end of the linear plane is connected with the second closing wheel output signal v〇2, the third dummy load R6 and the third output filtering capacitor C6 are connected in parallel to the second stepping output. The signal v〇2 and the system grounded first off output signal VC)1 can be +i8v, while the second_output signal is +v, and the linear regulator 78L05 has a +5V regulation function. The switching unit 3G can be adapted to different output ripple requirements, and includes a redundant filter circuit or a common hard wave circuit to improve the chopping effect. Reference circle 5 ′ FIG. 5 is a schematic diagram of the feedback feeding sampling power supply unit. As shown in FIG. 5, M413100, the feedback sampling power supply unit 5G includes a feedback rectifier diode m capacitor (4) a positive current connection D1 of the positive connection, a lower detection signal ^ electrode ^ D1 (four) connection fourth signal V4, feedback The positive of the chopper capacitor Q = connected to the fourth city V4, the negative terminal of the feeder capacitor C3 is connected to the second signal. The above control crystal 20 can be realized by using the commercially available 〇B2226 wafer (^2226 wafer is a PWM power switch chip) There is no extreme for the internal power MOSFET's immersed, the power supply galvanic current sensing terminal cs after the 〇B2226 crystal voltage stable familiar with the creation operation, can adjust the internal Cong lead time, so as to control the output: Those skilled in the art will modify and change the domain touch and say _ embodiment without deviating from the scope defined by the patent φ patent. The simple description of the figure is shown in Fig. 1 FIG. 2 is a schematic diagram of a buck switch unit in the present embodiment; FIG. 3 is a schematic diagram of a buck switch unit in the present embodiment; FIG. Schematic diagram of the filter regulator unit Figure 5 and Figure 5 are schematic diagrams of the feedback sampling power supply unit in the present embodiment. [Main component symbol description] 10 input rectification filtering unit 20 control chip 30 buck switching unit 40 output filter voltage stabilizing unit 50 feedback sampling power supply unit 8