使用於無限能量收獲設計的真實弦波電壓電路的設計與驗證

Abstract

由於傳統的AC晶片製作方式都是在晶片內放入AC電源轉成DC電源的電路，這個電路內往往都會造成功率上面的消耗，所以改良之靜態電路變成一個可行的設計技術。在未來可應用在生醫植入人體之無線電源傳輸生醫晶片上。 在本文中，我們提出利用改良靜態電路的AC電壓元件以植入生物電子。作為可以直接用AC電壓（ACVdd）驅動的改良之靜態電路，沒有交流電壓與直流電壓的電力變換，期望降低功率消耗，也使生物的植入式設備使用的無線傳輸系統真正接收弦波電源，進而發展低功消耗的生物電子。 電路設計使用傳統的CMOS結構，本專題設計的元件可直接使用AC的電源來操作，不需AC轉DC電路，藉此降低晶片的功率消耗與電源轉換機制的面積浪費，不同於傳統的植入式無線傳輸生醫晶片使用需定期置換的DC電池，直接使用由外部無線傳輸進來的AC電源，使得在體內的晶片能完全利用由外部無線傳輸進來的電源，能使植入式晶片盡可能的省電以及縮小面積的設計目標。可應用在植入人體之無線電源傳輸生醫晶片上，減少病人重新置換電池的痛苦與經濟成本，適宜應用在植入式電子醫療設備。 本專題中，將介紹兩個研究部分： 1. 建立元件庫 如果直接使用AC當作電源，在AC下降時AND會無法鎖住數值，輸出的數值都會被AC所影響，我們知道當輸出的電壓理論上為1時，而其輸出的電壓會降低，然而作為靜態電路的功能是決定PMOS和NMOS充放電的操作，也就是說在VDD-AC<1.8V時，動態電路的工作可以分為預充電及評估兩個階段，在預充電階段中，寄生電容被充電到一定的電壓，在評估階段，它依賴於由電容所儲存的電壓。而電壓會從儲存在電晶體的電容放電。為了防止電流流失以及輸出的不穩定性，我們利用PMOS產生類似Diode的功能，將AC濾波，以及利用電路本身會產生的寄生電容為補足這一段電源的不足，但發現寄生電容的電會從PMOS的Body端往Vdd漏電，PMOS寄生二極體的順偏漏電流把寄生電容的電漏掉。因此我們在PMOS Body端加一顆電容，防止漏電，結果可以用AC電源運算，但是缺點是輸出波型沒有到達full-swing，因為加了Diode會有壓降，所以為了讓電壓有1.8V，我們把電壓提高到2.2V。 2. 用c6288電路模擬與驗證在DC、AC、PULSE-DC電壓下改良元件是否正常 我們將改良後的元件應用於C6288電路來驗證元件使用AC(VDD)是否能正常運轉，並用自動化繞線流程節省許在LATOUT上設計的時間，而且可以降低人為上的失誤而導致電路設計有瑕疵。而最後驗證結果顯示我們的元件不但可以使用傳統的DC電壓，也可以使用AC電壓和PULSE-DC電壓。

The traditional way of making AC chips transfers AC into DC power supply circuit in the chip. It will cause the power consumption of the chip, so my circuit is available for improving it into a static design techniques. In the future, it can be used in biomedical implanted by wireless power transmission chip. In this paper, we propose using a modified static circuit for AC voltage to implantable bio-electronic components. AC voltage can be used directly on (ACVdd) driven by improve of static circuits, no AC and DC voltage converters, desirable to reduce the power consumption, also placed biological product device for wireless transmission system by receives true sine wave power. Thus,development of low power consumption for bio-electronics. CMOS circuit design using traditional structure, design elements of this topic can be directly used AC power to operated, no AC and DC voltage converters, thus reducing the power consumption and waste power conversion area of chip. Unlike conventional implantable biomedical chip using wireless transmission need DC batteries to regular replacement. We used wireless transmission coming from an external AC power supply, so that chip in the body can use the radio transmission coming from an external power supply, It’s makes Implantable chip saving power and reduced the area as much as possible. It can be used in implanted chip on the human body by wireless power transmission, reducing the patient's pain by change the battery and economic cost, suitable for use in implantable electronic medical devices.

This topic, we will introduce two research components:

1. Establish library If you used the AC as the power supply, when the AC voltage dropped, traditional component values cannot be locked. The output voltage was influenced by AC, so that the output voltage will reduced. We improved the component for adding a diode between PMOS and Vdd, in PMOS Body-side adding a capacitor, so the output voltage does not affect by low potential of AC power source. Build the library for AC power supply components, to solve the problem of the traditional elements in the AC case that cannot be used. Use AC power circuit design will be able to lead the new low-power design thinking circuits. 2. Using synthetic c6288 circuit simulation and verification by improved components We used c6288 circuit by improved the components to verify the components that AC (VDD) is not able to operate normally, we saved time in the LAYOUT design with automated routing process, and reduce human errors which led to be defective in circuit design.