負空間應用設計：PC板電源設計的數字控制技術

　　越來越多的處理到網絡和計算設備的印刷電路板（PCB）始終是一個“處理能力與權力”悖論。較新的集成電路（IC）的設計包多次處理能力在同一空間超過上一代設備。這種增加的能力使高性能的產品，如一個軟件定義的網絡（SDN）開關與額外的開關能力或自動化測試設備（ATE）設備具有更快的吞吐量。然而，更高的處理能力也可能意味著更高的功率要求，與IC和電源模塊使用更多的PCB房地產

　　How can designers recover board space lost to rising power requirements fueled by the need for increased processing capability？ At GE we look at solutions to these challenges with a principle we call Designing in the Negative Space.

　　Designing in the Negative Space （DITNS） looks at a number of engineering approaches to reduce the power module “footprint” on a printed circuit board. For example， making power modules denser while reducing their height enables designers to place them in previously unusable spaces. We see this approach used with GE’s low-height SlimLynx? family of point-of-load （POL）， or DC/DC converter， power modules that fit under a mezzanine board， or that can be placed on the back of the board， freeing up top-of-board space for taller components. （See Figure 1）