中文说明：资源描述將上述數值代入整理可以得 ，畫出未補償前的 波德圖 Buck-boost未補償前波德圖 由波德圖可以看出系統GM(-9.88dB)與PM(-14.4˚)都不穏定，操作於CCM的降-升壓轉換器有一個右半平面(RHP)零點，由於RHP零點使相位落後了90°，為了避免引起過多的相移造成系統不穩，增益交越頻率值應小於右半平面零點，一般取頻寬為右半平面零點頻率的1/3~1/5，且需要將系統的Phase Margin設計在45°-60°。 本系統增益交越頻率fC選擇800Hz，相位提升約60°。 首先設計相位領先補償
English Description：
Application backgroundThe equations of consolidation can be drawn, without compensation before Podtu Buck-boost did not bode diagram before compensationBy the Bode diagram can be seen system GM (-9.88dB) PM -14.4 or not the behavior set, operate in CCM buck boost converter and a right half plane (RHP) zero, because the RHP zeros the phase lag has 90 degrees, in order to avoid caused much of the phase shift caused system instability, the gain crossover frequency value should be smaller than the right half plane zero, generally take bandwidth for the right half plane zero frequency 1 / 3 to 1 / 5, and will require the system phase margin design in 45 degrees to 60 degrees.The system gain crossover frequency fC choose 800Hz, the phase of the upgrade is about 60 degrees.Phase lead compensation