1255676 九、發明說明： 【發明所屬之技術領域】 本發明係有關於一種接地雜訊抑制技術，尤指一種藉 由改變電子元件間之接地連接方式以改善電磁干擾問題之 接地雜訊抑制方法。 【先前技術】 現代電子産品，功能越來越強大，電子線路布局也越 形複雜，先前在電子線路設計過程中很少出現之雜訊及電 磁干擾問題，現卻已成爲主要問題。大多數電子設備在大 部分時間均係處於一個充滿電磁干擾的環境中，電磁干擾 之可能來源係為電源設備、基本元件甚或設備本身内部。 然電子設備完全遭受電磁干擾而損毁之案例雖較少見，但 因電磁干擾所造成的影響卻時有所聞，電池干擾會導致設 備故障、資料遺失及降低設備之可靠性，其結果可能是： 電子設備經常出現故障現象，故防止設備遭受電磁干擾係 已成爲目前亟待解決的技術問題。 此外，抑制雜訊，減小電磁干擾等問題在現代電子線 路設計過程中儼然成爲判斷系統性能優劣之最主要因素。 習用濾波電路抑制接地雜訊之方法係如第1圖所示，開關 驅動器1、被動元件2及被動元件3之接地腳位1 a、2a及 3a乃直接與電路板内層之數位接地面4相連接，惟此一做 法，將使得電磁輻射易經由不同路徑輻射出去（如第3圖 所示），從而形成一輻射干擾源並産生較強之雜訊干擾， 進而影響電路中其他電子元件之正常運作，致使電子產品 18197 u»676 因電磁干擾過大之故而a、、 職是，如何提出= f相關f規之認證。 之電源迴路實為目前效抑制雜訊及減小電磁干擾 【發明内容】 工待~決之技術問題。 於接^於以上所述習知技術之缺點，本發明之主要目 方供-種接地雜訊抑制 ^月之主要目的在 之連接方式更為直接，葬其可令迴路路控所含元件 有效防正接地雜訊及原迴路之迴路路經，以 度。 干I對週遭零件之影響程 法。為達上述目的’本發明即提供—種接地雜訊抑制方 中，地雜訊抑制方法係應用於-濾波電路 關_^ ==電路板上，其至少包括有-開 元件（如旁路電：)又；：二：開關驅動器）及複數個被動 路板外層表面之電源接地面（p〇w 動器所含的接地腳位電性連 I開關驅 地腳位與電路板内層之數位接/錯由該開關驅動器之接 如 位接地面（Dlgltal Gnd)接觸， =使得電源迴路所經元件間之連接方式更為直 性㈣制電源迴路之迴路路徑，俾可有效防 立曰==訊就窥以減少接地雜訊產生，並同時抑制信號電 : 之輻射及遮罩無關之干擾頻率信號，從而改善電 干&對方；週遭電子兀件之影響程度，進而使得所設計之 笔子電路可更容易通過全球才目_法規之認證。 18197 6 1255676 【實施方式】 悉此技藝之人士可:本本發明之實施方式’熟 發明之其他優點與"揭不之内容輕易地瞭解本 例加以施行或庫 太 &明亦可藉由其他不同具體實 於此首先需 '之4神下進行各種修飾與變更。 而〆王思的疋，爲简語 、主 地雜訊抑制方法之 ’、、s早a疋地顯示本發明接 重要元件之示意圖。、^ 本案所附圖式均僅顯示其中 之電子其係用以顯示應用本發明方法 形，於以下實施方式 件間接地及連接之示意情 路板上之遽波電路所含的=明方法係應用於—組設於電 1 5 ^ ^源迴路中，丨、；、Λ、，， 及改善電磁干擾對週遭電子元件 ^ V接地雜訊 該電源迴路所、經元件係 〜θ I度，如圖所示， 端雙向可控石夕開關驅動 1在—開關驅動器1 (如三 及被動元件3(如旁路電。容)）、=動元件2_(如旁路電容）g 係用以驅動大功率三# 中’ _二端開關驅動器1 1 值阻隔電塵（如⑽⑽:^可控㈣關’其可提供三種峰 (5A，10A或15A)，從而可r?Aat〇〇V)和之種觸發電流 動元件2及被動元件3，= f源並提高工作效率；而被 〇…陶繼並聯而成：二別為^ 需要之共模編仏”二自兀件或電境中轉移出不 相容性。 ^除多餘能量及穩定電路之電磁 ]8]97 1255676 別二=，， 舶丨位2a及33透過電路板外岸 接至開關驅動器1所含之接地腳位la:以：;接面5連 -同連接至電路板内層之數位接地面 電源迴路所經元件間之連接方式更為如%即可使得 示），藉以限制電源迴路 (如弟4圖所 雜訊亂竄以減少接地雜1產^ 工，俾可有效防止電源 生之輻射… 制時抑制信號電場所產 ,々 件之影響程度，進而使得所嗖蚪之+工干 路可更容易通過全球相關法規之認證。…％子琶 經由2圖所示之旁路電容2及旁路電容3係 工由电路板外層之電源接地面5連接到接 / 该接地腳位la 一併連彳 卩< la，设與 —電源迴路之連接方連_^電路板内層之數位接地面斗，此 進行-強迫性規Γ:你 於對電源迴路之迴路路經 更為直接，二因電源迴路所經元件間之連接方式 同路徑L出=迴路路_多而使得接地雜訊經由不 需要义θ > 可抑制仏號電場之對外輕射及遮罩不 而要或疋热關之頻率信號，以更有效防止電源 :::弱！磁t擾對於週邊電子元件之影響程度，二】 s °又5之％子電路得以更為容易通過相關法規之認證。 限定爲本發明之較佳實施方式而已，並非用以 因:本：月：乾圍，亦即，本發明事實上仍可做其他改變， 斑技二二ΐ:項技術者在未脫離本發明所揭示之精神 一尸斤兀成之-切等效修飾或改變，仍應由後述 18197 1255676 之申請專利範圍所涵蓋。 【圖式簡單說明] 經元圖，其係，示習用電源迴路所 第2圖係為一剖面圖， 之電源迴路與所經過之電子 形； 其係用以顯示應用本發明方法 元件間接地及連接之示意情 第3圖係為第1圖習用電源迴路之電路結構示意圖， 以及 第4圖係為第2圖之應用本發明之電源迴路的電路結 構示意® ° 【主要元件符號說明】 1 開關驅動器 2 被動元件 3 被動元件 4 數位接地面 5 電源接地面 1 a、2 a、3 a 接地腳位 9 181971255676 IX. Description of the Invention: [Technical Field] The present invention relates to a ground noise suppression technique, and more particularly to a ground noise suppression method for improving electromagnetic interference problems by changing a ground connection between electronic components. [Prior Art] Modern electronic products are becoming more and more powerful, and the layout of electronic circuits is more complicated. The problems of noise and electromagnetic interference that were rarely seen in the electronic circuit design process have become a major problem. Most electronic devices are in an environment full of electromagnetic interference for most of the time, and the possible sources of electromagnetic interference are power supplies, basic components, or even the interior of the device itself. However, the cases in which electronic equipment is completely damaged by electromagnetic interference are rare, but the effects caused by electromagnetic interference are sometimes heard. Battery interference can cause equipment failure, data loss and reliability of equipment. The result may be : Electronic equipment often has a malfunction, so preventing the equipment from being subjected to electromagnetic interference has become a technical problem that needs to be solved urgently. In addition, the problem of suppressing noise and reducing electromagnetic interference has become the most important factor in judging the performance of the system in the design process of modern electronic circuits. The method for suppressing ground noise by the conventional filter circuit is as shown in FIG. 1. The grounding pins 1 a, 2a and 3a of the switch driver 1, the passive component 2 and the passive component 3 are directly connected to the digital ground plane 4 of the inner layer of the circuit board. Connection, but this practice will make the electromagnetic radiation easy to radiate through different paths (as shown in Figure 3), thus forming a radiation interference source and generating strong noise interference, which in turn affects the normality of other electronic components in the circuit. Operation, resulting in electronic products 18197 u»676 due to excessive electromagnetic interference, a,, job, how to propose = f related f regulations certification. The power supply circuit is currently effective in suppressing noise and reducing electromagnetic interference. [Summary of the Invention] The technical problem of work-to-decision. In view of the shortcomings of the above-mentioned prior art, the main purpose of the present invention is to provide a grounded noise suppression. The main purpose of the connection is to make the connection method more direct, and the funeral can make the components included in the loop control effective. Anti-grounding noise and loop circuit of the original circuit, in degrees. The effect of dry I on the surrounding parts. In order to achieve the above object, the present invention provides a ground noise suppression method, and the ground noise suppression method is applied to a filter circuit _^ == circuit board, which at least includes an on-off component (such as a bypass) :) again;: 2: switch driver) and the power grounding surface of the outer surface of a plurality of passive circuit boards (the grounding pin included in the p〇w actuator is electrically connected to the digital position of the I switch driving ground and the inner layer of the circuit board) / wrong by the switch driver connected to the ground plane (Dlgltal Gnd) contact, = make the connection between the components of the power supply circuit more straight (four) system loop circuit path, can effectively prevent the vertical == signal In order to reduce the ground noise generation, and at the same time suppress the signal power: the radiation and the mask-independent interference frequency signal, thereby improving the influence of the electric drying & the other side; the surrounding electronic components, thereby making the designed pen circuit It is easier to pass the certification of the global _ statute. 18197 6 1255676 [Embodiment] The person skilled in the art can: The other embodiments of the present invention, the other advantages of the invention, and the contents of the disclosure are easily understood. To be implemented or Kutai & Ming can also be modified by various other specifics in order to do the first thing, and then the decoration and change of the main noise suppression method. s, s early to show a schematic diagram of the important components of the present invention. ^ ^ The drawings herein only show the electronics used to display the application of the method of the present invention, indirectly and in the following embodiments The method of the chopping circuit included in the chopping circuit board is applied to set the voltage in the source circuit, 丨, ;, Λ,,, and improve the electromagnetic interference to the surrounding electronic components ^ V grounding The noise of the power circuit, the component system ~ θ I degree, as shown in the figure, the end bidirectional controllable Shih switch drive 1 in the switch driver 1 (such as three and passive components 3 (such as bypass power) , = moving component 2_ (such as bypass capacitor) g is used to drive high power three # 中 ' _ two-terminal switch driver 1 1 value blocking electric dust (such as (10) (10): ^ controllable (four) off' which can provide three peaks (5A , 10A or 15A), so that r?Aat〇〇V) and the kind of triggering current moving element 2 and passive element 3, = f source and improve work efficiency; and beggar... Tao is connected in parallel: two are required for ^ common mode editing" two self-adhesive parts or electrical environment to transfer incompatibility. And the electromagnetic of the stability circuit]8]97 1255676 别二=,, the 丨2a and 33 are connected to the grounding pin of the switch driver 1 through the outer shore of the circuit board la: to:; The digital ground plane of the inner layer of the circuit board is connected to the power supply loop by means of a more %, so as to limit the power supply loop (such as the miscellaneous information in the figure 4 to reduce the grounding noise, 俾It can effectively prevent the radiation generated by the power supply... The suppression of the signal electric field production and the influence degree of the equipment can make it easier to pass the certification of the relevant global regulations. ...% 琶 琶 via the bypass capacitor 2 and the bypass capacitor 3 shown in Figure 2 are connected by the power supply ground plane 5 of the outer layer of the circuit board to the ground / the ground pin la and connected with < la, - The connection of the power supply circuit is connected to the digital grounding surface of the inner layer of the circuit board. This is done - the compulsive regulation: you are more directly connected to the circuit of the power supply circuit, and the connection between the components of the power supply circuit. The same path L out = loop way _ so that the ground noise passes the unwanted sense θ > can suppress the external light of the 仏 electric field and the frequency signal of the mask is not needed or hot, to prevent the power supply more effectively: ::weak! The degree of influence of magnetic t-interference on peripheral electronic components, s ° and 5% of the sub-circuits are easier to pass the relevant regulations. The invention is not limited to the following: the present invention: The spirit of the invention disclosed in the context of the invention is still covered by the scope of the patent application of the above-mentioned 18 197 1 255 676. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 2 is a cross-sectional view showing a power supply circuit and an electronic shape passing through it, which is used to display an indirect component of the method of the present invention. FIG. 3 is a schematic diagram showing the circuit structure of the power supply circuit of FIG. 1 and FIG. 4 is a circuit diagram of the power supply circuit to which the present invention is applied. FIG. 2 [Main component symbol description] 1 switch Drive 2 Passive component 3 Passive component 4 Digital ground plane 5 Power ground plane 1 a, 2 a, 3 a Ground pin 9 18197