意法半导体的EZ板容易与表面贴装功率器件的设计

　　意法半导体的EZ板容易与表面贴装功率器件的设计

　　你有没有建立一个快速原型的那个好主意，一直在你的脑海里滚动？有想法是伟大的。第一次建造它并让它开始工作，对于像我这样的人来说简直是涅盘。那真是发明中有趣的一部分。使之工作

　　在半导体的早期，建造一个电路意味着你必须制造晶体管。我很高兴那些日子已经过去了。半导体行业已经出现了很多改变自约翰·巴丁以来，1947年12月Walter Brattain和威廉·肖克利建立了第一个“晶体三极管”。我们是建立在伟人的肩膀上的。

　　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.