Abstract: In view of nonlinearity and unstable zero-dynamics in Boost type DC/DC converter（BTDC） when taking capacitor voltage as output,that causes a great limitation on its performance such as low-bandwidth and sluggish dynamic response.This paper,based on input-output feedback linearization method,proposed a novel control scheme with inductor current which utilizes nonlinear control as inner-loop,capacitor voltage with proportional-integral（PI） control being taken as outer-loop as well.This novel cascade-structure control scheme can not only solve nonlinearity and unstable zero-dynamics problems in direct method when taking capacitor voltage as output,but also overcome lack due to power source fluctuation and large load variation in indirect method when taking inductor current as output.Experimental results of a self-manufactured prototype show that,compared with traditional cascade proportional-integral（PI） control,this control scheme can significantly improve BTDC’s dynamic and steady-state performances such as output voltage regulation range,steady-state error,and dynamic settling time.