意法半導(dǎo)體的EZ板容易與表面貼裝功率器件的設(shè)計(jì)

　　你有沒(méi)有建立一個(gè)快速原型的那個(gè)好主意，一直在你的腦海里滾動(dòng)？有想法是偉大的。第一次建造它并讓它開(kāi)始工作，對(duì)于像我這樣的人來(lái)說(shuō)簡(jiǎn)直是涅盤(pán)。那真是發(fā)明中有趣的一部分。使之工作

　　在半導(dǎo)體的早期，建造一個(gè)電路意味著你必須制造晶體管。我很高興那些日子已經(jīng)過(guò)去了。半導(dǎo)體行業(yè)已經(jīng)出現(xiàn)了很多改變自約翰·巴丁以來(lái)，1947年12月Walter Brattain和威廉·肖克利建立了第一個(gè)“晶體三極管”。我們是建立在偉人的肩膀上的。

　　Figure 1： Transistor inventors William Shockley （seated）， John Bardeen， and Walter Brattain， 1948. （Courtesy of AT&T Archives and History Center）

　　In more recent times， prototyping was a matter of pulling out your white board （or perf-board） and plugging in a quick circuit to verify what you were thinking would actually work. Simulations can really only take you so far. Some time ago， I had designed a simple alternator voltage regulator for a niche aftermarket application. I drew up the schematic， spent hours simulating it， optimizing it， and making it stable. I was proud of my little circuit. It was a simple discrete analog control loop driving a smart high-side driver. In those days， power switches were relatively big leaded components with a tab you could snap a small heatsink onto， or bolt on a big heatsink when needed. The protected high-side switch I used was a VN820 in a 5 leaded TO-220 package.