1321893 九、發明說明： 【發明所屬之技術領域】 置1321893 IX. Description of the invention: [Technical field to which the invention belongs]
本發明係有關於一種具空載運作低待機功率損耗之轉換控 方法及裝置，特別是一種在任何負載條件下，均可達到較言= 換效能與良好負載穩壓率及低待機功率消耗之轉換控制方法及S 【先前技術】 由於可用能制枯竭’各種能源的開發與能源使用的限 ^前全球之共識。因此目前歐美日等先進國家已針對能源運 之能源政策。而電氣產品在待機模式(standby _ 功率消耗值之規範，即綠色電源(Green p〇wer)，一， y瓦之下’此乃避繼產品在不開 又以$ Π 發 供應器等，甚至在大功率的電氣久上特二力日電源 重視，例如ATX PLLS 80等。以下將介二貝耗也開始被 式電源供應器及其相闞控制器所使用之習°知二低待機損耗交換 第1B為f知低待機損耗交換式電源 — 思圖。-般而言’主要是由交流/直流 電路架構不 換器12串接，其中交流/直流轉換單及直流/直流轉 以採用整流/倍壓整流+渡波器或功率 ^糸J規格下’可 系統輸入之交流電壓Vacl轉換為贫_ ^斋，/、作用乃是將 修正單元可達到功率因;U。使用功率因數 壓之作用’而交流/直流轉換單&穩 單12係由-返赋轉換器、 直流/直流轉換 控制器構成。較流/直流轉換單^^㈣❻及—待機模式 轉換為所需之第二直流電壓仏批如 3之第一直流電壓Vdcll 是其他規格電麗等。 · 5V、12V、24V、48V或 其中直流/直流轉換單元12所採用之架構可使用隔離型或非 6 ϊίΐΞί ί lit交換式電源供應財’返馳式(Fiyback) 100W !ίτ (Activp 【 順向式(F〇rWard) ’主動箝位順向式 在100W以上之i用017ard)或其他零電壓切換⑽之架構則使用 器，轉換器架構中被大幅使用之返驰式轉換 i賴i要ίΐ 2载條件所使用之控制器（功能）外，在綠色 當負载在、式下之系統控制時序與輸出電壓示意圖。 ’+_工作週期(响調整 之導通及開關。)方式’間歇控制功率晶體 圍内二』壓版12維持在某4 輸出電>1 Vdcdt山^輸出電壓下限值VB22之間），當 之控制訊號，直時系統可_功率晶體 VB22，系統重新輸出對二曰==，於輸出電墨下限值 的使用亦伴隨著功轉耗，秘1(VGltage-splke)，緩振電路 殊控制或輔助^轉Λ1：在未使用特 功率損耗。細樣也伴隨著 為請〜1W左右。而且，使^叢目統在待機模式之損耗約 曰及差在此所使用的方式多只適用於1_以下的產品“、反應 =在待機模式= £===;損==之 ，、適用於200W以下之轉換考。 叙而η此種方式 器上’ S大般f用$小功率單輪出之電源轉換 嚴重。朴輸出的條件下’其設計將更困難，其缺點將更加 1故明乃針對先前技術之缺點，提出-種Μ人王f Η古 效改善上述缺失之D⑽C轉換㈣方法及^。種&理且有 【發明内容】 整切換轉換控制方法及裝置，藉調 切換，以達成較既有之能量轉移方式，完成零電屢 結合同步整流再在，制方法及裝置， 為達成上述目的及且侦'日，達到更向之轉換效能。 空载運作低待機功率損第-觀點教導-種具 壓之控制策略，同時利用作為調節及穩定輸出電 易在輕載與空载時，完成零量轉換之特性，能輕 在大負载電流之輸出規格較高之轉換器效能； • 由木用同步整流電路，更能提 1321893 •高全機之轉換效率。此外採用混合變觸盘 適當時機卜般而言是輕軌與^任·之方式，在 動作狀況，來達成空勸振式轉換裝置之 反應及待機模式時低功率消耗。 '、载知壓率與較快速之暫態 共振式轉換控制裝置自括.· 制器及一穩壓模式(FMHYPWM)H換器、共振式轉換器控 在前級使用-功率因數統及規格需求，可 流需求’可在共振式轉換器中使二:為因應大負载電 正器或倍壓整流單元，係用於。該功率因數修 其中功率因數修正器可且功電力轉換。 作用，以輸出穩定之第—直、、Γι 數g正及前置調節器穩麗之 換或手動域哺合麵單元可藉自動切 出之第-直流電壓V-，共振ί轉ίί用壓單元所輸 轉換為所需之第二直流電壓v用於將第-直雜壓Vdc„ 責任週期方式，根據負載狀ζπ採用调整切換頻率與調節切換 W其中共振式二及==之第二直流電壓 二極體或是同步整流電路。 （0utPut Rectifler)可採用 叙=2換來自ί振式轉換器之輸出電 與責任週期，以穩定系&二之功率晶體控制信號的頻率 換器使用同步整流電^ j I莖’此外此控制器在共振式轉 信號。 ^路^亦必須提供同步整流功率晶體之^ 壓拉系接收共振式轉換器所輸出之第二直流带 期=切換訊號至以或切換頻率之責任遇 轉換控财辨-之共振式 爛具空裁猶低神損耗之共振式轉換^ 1321893 功率因數修正11、―共振式轉換器、 驟制盗及—穩壓模式控制器所組成’包括下列步 :第流電壓；使—功率因數修正器轉換該交流電壓 壓；⑻使—共振式轉換器轉換該直流高電壓成 fvlf第:參考電壓（Vbf)且vc◦命令電壓大於第二i考ίϋ Ξ第二直流電壓至誤差放大器與第-參考電 Q命令賴至共振式觀器㈣H授該單元之 =it制器解二參考賴值㈤‘ ί 共振式轉換器控制11依據負載狀況調整變頻條3 壓ί於第大於第r參考電壓⑹且vco命令電 _值㈤經由誤差放大;產生:=¾電=㈡； 切換頻率同時回授V0)命令電壓 堡決疋 經共振式轉換器控制器依據比較’ 制直器任週期之大::二 裝置本;;力==換，法及 器之動作狀況°因U π力羊祕^更甚者，由於與習知技術相較下， 同。 請參閱第6圖，第β阁％ 7 低功率損耗之共振式轉換據本發明之一實施例具空載運作 圖。圖中橫軸為頻率，嚴巧法所使用之譜振電路頻率響應 中可知，在重負載時，如曲繞Ηζ，縱軸為相對電壓增益。由圖 但負載減輕時，如曲 、、、01所不’電壓增益在高頻時減少， 頻率必須提高以/标’電壓增益增加。此時切換 在頻率低於7><1〇5Ηζ時，電$ 5载再減輕時，如曲線604所示， 切，頻率必須大於7χι〇5ηζ，以共振發生。此時， 義電路就不容易設計率必須大於L 05 操作虞負载條件與實圖= 低功率損耗之^之發明之—實施例*空載運作 圖。頻率在_ Fl之間，責切，頻率之關係座標示意 fa1 j ΐί« fs F,^"" 低功率損耗之裝i之第明之一實施例具空載運作 圖。vco電^令置自之電ft與，切換頻率之關係座標示意The invention relates to a conversion control method and device with low standby power loss with no-load operation, in particular, under any load condition, it can achieve better performance, good load regulation rate and low standby power consumption. Conversion Control Method and S [Prior Art] Due to the availability of energy systems, the development of various energy sources and the limits of energy use are global consensus. Therefore, advanced countries such as Europe, the United States and Japan have already targeted energy policies for energy transportation. And the electrical products are in standby mode (standby _ power consumption value specification, that is, green power (Green p〇wer), one, y watts below 'this is the avoidance of the product is not open and then $ Π hair supply, etc., even In the high-power electrical long-term special power, such as ATX PLLS 80, etc. The following two-battery consumption is also beginning to be used by the power supply and its associated controllers. 1B is a low standby loss switching power supply - thinking. - Generally speaking, 'mainly by AC / DC circuit architecture without converter 12 series, of which AC / DC conversion single and DC / DC conversion to use rectification / Double voltage rectification + ferrite or power ^ 糸 J specification 'AC voltage Vacl can be converted into poor _ ^ fast, /, the role is to modify the unit can reach the power factor; U. Use the role of power factor pressure' The AC/DC converter single & stable single 12 is composed of a return-to-return converter and a DC/DC converter controller. The flow/DC conversion unit ^^(4)❻ and the standby mode are converted to the required second DC voltage仏Batch 3 such as the first DC voltage Vdcll is its Specifications, etc. · 5V, 12V, 24V, 48V or the architecture of the DC/DC conversion unit 12 can use the isolated or non-6 ϊίΐΞί ί lit switching power supply for the 'Fyback' (Fiyback) 100W ! (Activp [F〇rWard] 'active clamp forward direction is above 017ard for 100W or more with 017ard) or other zero voltage switching (10) architecture is used, converter converter architecture is widely used in the flyback conversion i 赖 i want to ΐ 2 controllers (functions) used in the conditions, in the green when the load is under the system control timing and output voltage diagram. '+_ work cycle (cancel the adjustment of the conduction and switch.) way 'Intermittent control power crystal enclosure 2' pressure plate 12 is maintained at a certain 4 output power > 1 Vdcdt mountain ^ output voltage lower limit value VB22), when the control signal, the system can be _ power crystal VB22, system re Output pair 曰 ==, the use of the lower limit of the output ink is also accompanied by the power consumption, secret 1 (VGltage-splke), slow control circuit control or auxiliary ^ turn Λ 1: in the use of special power loss. The sample is also accompanied by ~1W or so. Moreover, the loss and the difference in the standby mode are mostly applicable to products below 1_, "reaction = in standby mode = £===; loss ==, Applicable to the conversion test below 200W. θ and η on this mode on the 'S big f with a small power single wheel out of the power conversion is severe. Under the conditions of the plain output 'its design will be more difficult, its shortcoming will be even more Therefore, in view of the shortcomings of the prior art, it is proposed that the D(10)C conversion (four) method and the above-mentioned missing D(10)C conversion method are used to improve the above-mentioned missing D(10)C conversion method and the invention. Switching to achieve the existing energy transfer mode, complete the zero-electric combined with synchronous rectification and then, the method and device, in order to achieve the above purpose and detect the day, achieve more conversion efficiency. No-load operation low standby power Loss - Viewpoint - a control strategy with pressure, while using the characteristics of zero-conversion at light load and no-load as a regulation and stable output, can convert light output with high load current Performance; • by wood Rectifier circuit can better improve the conversion efficiency of 1321893 • high full-scale machine. In addition, the appropriate timing of the hybrid touch-sensitive disc is the way of light rail and ^ Ren·, in the action state, to achieve the reaction of the air-vibration type conversion device. And low power consumption in standby mode. ', load pressure rate and faster transient resonant converter control device. · Controller and a voltage regulator mode (FMHYPWM) H converter, resonant converter control Level use - power factor system and specification requirements, flow demand ' can be made in the resonant converter: for large load electric or double voltage rectification unit, which is used for power factor correction It can be used to convert the power to the output of the first - straight, Γι number g positive and pre-regulators stable or manual field feeding surface unit can automatically cut out the first - DC voltage V-, Resonance ί ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ == the second DC voltage The diode is either a synchronous rectifier circuit. (0utPut Rectifler) can use the =2 to change the output power and duty cycle from the 振-vibration converter to stabilize the system & 2 power crystal control signal frequency converter using synchronous rectification ^ ^ I stem 'this control The device is in a resonant turn signal. ^路^ must also provide synchronous rectification power crystal ^ Pressing system receiving resonant converter converter output of the second DC period = switching signal to or switching frequency of the responsibility of the conversion control - the resonance of the rotten Resonant conversion of the loss of God's low God ^ 1321893 Power factor correction 11, "resonant converter, sneak thief and - voltage mode controller composed of 'including the following steps: the first voltage; make - power factor corrector conversion The alternating voltage voltage; (8) causing the - resonant converter to convert the DC high voltage into fvlf: reference voltage (Vbf) and vc ◦ command voltage is greater than the second i ϋ ϋ Ξ second DC voltage to the error amplifier and the first reference Q command depends on the resonance viewer (4) H grants the unit =it controller solution two reference Lai value (5)' ί resonant converter control 11 adjusts the frequency converter strip 3 according to the load condition, the voltage is greater than the rth reference voltage (6) and vco Command electric_value (5) via error amplification; generate:=3⁄4 electric=(2); switching frequency simultaneously feedback V0) command voltage 疋 疋 via resonant converter controller according to comparison 'straightener's maximum cycle:: two devices Ben; force == change, And an operation status of the sheep ° secret force due to U π ^ What is more, since lower compared to the prior art, the same. Referring to Fig. 6, the resonance conversion of the ?th cabinet % 7 low power loss has a no-load operation diagram according to an embodiment of the present invention. In the figure, the horizontal axis is the frequency, and it can be seen from the frequency response of the spectral circuit used in the rigorous method that, in the case of heavy load, such as a meandering, the vertical axis is a relative voltage gain. However, when the load is reduced, if the voltage gain is not high at the high frequency, the frequency must be increased by the / standard voltage gain. At this time, when the frequency is lower than 7 <1〇5Ηζ, when the power is reduced by 5, the load is reduced as shown by the curve 604, and the frequency must be greater than 7χι〇5ηζ to occur by resonance. At this point, the circuit is not easy to design the rate must be greater than L 05 operation 虞 load conditions and real map = low power loss of the invention - embodiment * no-load operation diagram. The frequency is between _Fl, the duty, the relationship of the frequency coordinates fa1 j ΐί« fs F, ^"" One of the first examples of low power loss is a no-load operation diagram. The vco electric control is set by the electric ft and the switching frequency.
Vbi/。穩壓模式控制琴413 〇又‘^ F2之0，在巧時Vra = 下(其情_ v。-- 式，分述如 壓）： Μ荟考电屋、‘為第二參考電Vbi/. The voltage regulation mode controls the piano 413 〇 and ‘^ F2 0, in the case of Vra = (the situation _ v.--, the description is like pressure): Μ 考 test electric house, ‘for the second reference
Cl) v〇>yBF, Vvc〇>Vbf ： 參考第7圖，當系統操作於正常條件 在：定_之内，共振式轉換器411之電控制 頻乾圍為(Fw)。輸入一交流電屢，♦使 式知作。變 =成為第一直流電厂堅;使一共振式轉換器 £成為第二直流電壓；回授該第二直流電壓至一並掂if机尚电 制器；並回授該單元之VCO命令電屋至麵模 12 1^^1893 壓模式控制器依據變頻條件得知負載狀況調整該共振式轉換器， ^調整該第二直流電壓。此為設計者依負載條件來設計頻率調變 範圍。 (2) V〇>Vbf，Vvco<Vbf : 趙2考第7圖及第8圖，#輸出賴VgA於nvVC0<vBD此時 ，壓拉式控制器413會產生控制訊號，控制共振式轉換器411之 電路以切換責任週期進入調變，同時伴隨變頻方式，# Vvc〇〈Vbd， ’則共振式轉換器411之切換信號之責任週期就 越小，可以最後為零的狀態。回授第二直流電壓 =====產生ra命令電壓’此驗=2 ΐίΞϊϊίΙΐί電壓值與第二參考電壓值㈤經由誤差放 土益決疋此時之責任週期大小。此為混合變頻與 : 制法„„作；及使該共振式轉換器正常運作。又-交工 以上’責任獅變化顧為(5Μ)， 乂上白馮„又计者依負載條件設計 / 如晴死=== 流/直流轉轉損耗之直 之連接方式’可區分為串聯譜振電路 ，^f兀件與負載 晶式之橋式轉換器、推挽式轉換器等。e或多 器或同步整流電路，只要適當之4級卯6可為整流 頻與脈波寬度調變(fmhypwm;)操作 > 數叹计，在混合變 件下，亦可達到零電壓切換。同時在輕载或空载之條 此全機可以有良好的負載率增加緩振電路，因 機功率消耗。 二载條件下，具有極低之待 第10圖為為依據本發明之—竇 構。共振式轉換器控制器為—且】H：/、振式轉換器控制器架 C〇ntr〇1㈣此沉，_功能之功有電^=振盪器（Voltage 早日日體控制信號產生器。由 1321893 -回授電路及誤差放AH臟、一賴控偷麵及 Γ义=控二請產/器1006或一同步整流功率晶體控制信號 盡ϊί if構成，以產生轉換11功率晶體控制域或同步整流功 體控制信號。係可接收來自回授電壓控制信號，改變功 體控制信號頻率之控制器。 曰曰 為為依據本發明之一實施例之具穩壓模式控制器之丘 ，·。穩?模式㈣11為—具有脈波寬度控亲;Cl) v〇>yBF, Vvc〇>Vbf: Referring to Fig. 7, when the system is operating under normal conditions, the electrical control frequency of the resonant converter 411 is (Fw). Input an AC power repeatedly, ♦ make the formula known. Change = become the first DC power plant; make a resonant converter £ to become the second DC voltage; feedback the second DC voltage to the same as the machine, and return the unit's VCO command house To the surface mode 12 1 ^ ^ 1893 pressure mode controller according to the variable frequency conditions to determine the load condition to adjust the resonant converter, ^ adjust the second DC voltage. This is the designer's design of the frequency modulation range according to the load conditions. (2) V〇>Vbf,Vvco<Vbf: Zhao 2 test 7th and 8th, #output赖VgA at nvVC0<vBD At this time, the pull-down controller 413 generates a control signal to control the resonance conversion The circuit of the device 411 enters the modulation with the switching duty cycle, and is accompanied by the frequency conversion mode, #Vvc〇<Vbd, 'The smaller the duty cycle of the switching signal of the resonant converter 411 is, the last zero state. The feedback of the second DC voltage ===== generates the ra command voltage 'this test=2 ΐίΞϊϊίΙΐί voltage value and the second reference voltage value (5) through the error release decision to determine the size of the duty cycle at this time. This is a hybrid frequency conversion with: the system is made; and the resonant converter is operating normally. Also - above the work of the 'responsible lion change Gu Wei (5 Μ), 乂上白冯 „ again according to the load conditions design / such as the death === flow / DC transfer loss straight connection method can be divided into series spectrum Circuits, bridges and load-carrying bridge converters, push-pull converters, etc. e or multi-device or synchronous rectification circuits, as long as the appropriate level 4 卯6 can be used for modulation of the frequency and pulse width ( Fmhypwm;) Operation> The number of sighs, under the hybrid variable, can also achieve zero voltage switching. At the same time, in the light load or no load, the whole machine can have a good load rate to increase the vibration-damping circuit, due to machine power consumption. Under the condition of two loads, there is a very low waiting time. Figure 10 is the sinus structure according to the present invention. The resonant converter controller is - and] H: /, the vibration converter controller frame C〇ntr〇1 (four) This sinking, _ function has electricity ^ = oscillator (Voltage early body control signal generator. By 1321893 - feedback circuit and error AH dirty, a control sneak peek and = meaning = control two request / device 1006 or a synchronous rectified power crystal control signal is constructed as follows to generate a conversion 11 power crystal control domain Or a synchronous rectification power control signal, which is a controller that can receive a feedback voltage control signal and change the frequency of the power control signal. 曰曰 is a hill with a voltage regulator mode controller according to an embodiment of the present invention. Stable mode (4) 11 is - with pulse width control;
Hi缝11⑽)電壓命令錢，改變共 1102 餘職之㈣11。由，授魏及誤差放ϋ =_構成之穩壓模式控制器,⑽及— 步整流功率晶體控制信號產生11麵構成' 本發同步整流神晶體㈣信號。 器，:狀共振式轉換 脈波寬度調變之控制機制在不同之負貝利用混合變頻與 模式，有效改善負载穩壓率，降低:可 的=者上發明，用額外之：S i 切換，失皆較習知技術還要^^乍在南頻’其鐵心損失之功率與 本創楚描述 本發明之範#加以限制。相反的·2j較佳具體實例來對 及具相等㈣財發珊欲賴各種改變 【圖式簡單說明】 第1圖為習知低待機損耗交換式。 第2圖為f知低待機損耗交換 ^之祕輯示意圖。 貝耗乂換以供應財，後級直流/直流轉換 繁叢發待機模式下之祕控制時序與輸出電壓示音圖。 Ξίί知使用共振式轉換器利用叢發模式(b^達 笛4 m Γ載操作與低待機功率損耗之轉換器架構 =依據本發明之—實施例之轉換裝置架構圖。 黛β二1依據本發明另—實施例之轉換裝置架構圖。 據本發明之—實補具空作低功率損耗之 j換㈣方法所使狀諧振電路鮮響細。 弟本發明之一實施例具空載運作低功率損耗之 序貝任週期與切換頻率之座標示意圖。 酽置之時 第8 iff本發明之—實施例具空载運作低功率損耗之果置之 楚命令與切換鮮之關係座標示意圖。 直闕網軸糊耗之直流/ ，10圖為為依據本發明之—實施例之共振 轉換器控制器架構。 ^之/、振式 【主要元件符號說明】 η交流/直流轉換單元 31交流/直流轉換單元 40共振式轉換控制方法及裂置 401功率因數修正器 412共振式轉換器控制器 511整流/倍壓整流及濾波器 601、602、603、604 負载曲線 904諧振槽架構 1002回授電路及誤差放大器 12直流/直流轉換器 32直流/直流轉換器 41直流/直流轉換器 411共振式轉換器 413穩壓模式控制器 902轉換器架構 906輸出整流器 ιυυώ㈡仅电岭汉铁是玟大器 10〇4電壓控制 1006轉換器功率晶體控制信號產生器 孟佐制振盪态（VCO) 1008同步整流功率晶體控制信號產生器 15 1321893Hi slit 11 (10)) voltage command money, change a total of 1102 (4). By, the Wei and the error ϋ = _ constitute a voltage regulator mode controller, (10) and - step rectification power crystal control signal produces 11 faces to form 'the synchronous synchronous rectifier crystal (four) signal. ,: The resonant-type conversion pulse width modulation control mechanism uses mixed frequency conversion and mode in different negatives to effectively improve the load regulation rate, and reduce: can be invented, with the additional: S i switch, The loss is better than the conventional technology. ^^ 乍 南 南 南 南 南 南 南 南 南 南 南 南 南 南 南 南 南 南 南 南 南 南 南 南 南 南 南Conversely, 2j is a better specific example. It has the same (four) financial and savvy changes. [Simplified Schematic] Figure 1 shows the conventional low standby loss switching type. Figure 2 is a schematic diagram of the secret of low standby loss exchange. The consumption of the shell is replaced by the supply of money, and the DC/DC conversion of the latter stage is controlled by the secret control timing and output voltage diagram in the standby mode.使用 ί ί 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用In another embodiment of the present invention, the embodiment of the present invention has a low-load operation. The embodiment of the present invention has a low-load operation. Schematic diagram of the order of the power loss and the switching frequency. The 8th iff of the present invention is an embodiment of the present invention with a low-power loss of the no-load operation and a schematic diagram of the relationship between the switching and the switching. The DC / 10 of the grid paste consumption is a resonant converter controller architecture according to the embodiment of the present invention. ^ /, vibration type [main component symbol description] η AC / DC conversion unit 31 AC / DC conversion Unit 40 resonant conversion control method and split 401 power factor corrector 412 resonant converter controller 511 rectification / voltage doubler rectification and filter 601, 602, 603, 604 load curve 904 resonant tank architecture 1002 back Circuit and error amplifier 12 DC/DC converter 32 DC/DC converter 41 DC/DC converter 411 Resonant converter 413 Regulated mode controller 902 Converter architecture 906 Output rectifier υυώ (2) Only electric Ling Hantie is a large device 10〇4 voltage control 1006 converter power crystal control signal generator Mengzoo oscillation state (VCO) 1008 synchronous rectification power crystal control signal generator 15 1321893
1102回授電路及誤差放大器 1104電壓控制振盪器（VCO) 1106穩壓模式控制器 1108轉換器功率晶體控制信號產生器或同步整流功率晶體控制 信號產生器 161102 Feedback Circuit and Error Amplifier 1104 Voltage Controlled Oscillator (VCO) 1106 Regulated Mode Controller 1108 Converter Power Crystal Control Signal Generator or Synchronous Rectified Power Crystal Control Signal Generator 16