The staggered parallel Boost converter combined with the current mode control mode can not only realize the current flow between the phases, but also reduce the current stress of the device.This article systematically introduces the working principle of Boost under the staggered parallel structure, adopts the COT control technology based on the valley value current mode, and adopts type II compensation to accelerate the response time of the system. Based on Simplis, a model was built and simulated, and the feasibility of this control method was demonstrated through software simulation; We have designed and developed a miniature power module that includes two Boost circuits, each of which can operate independently or operate in interleaved parallel mode. The power module is small, lightweight, and has a small range of output voltage fluctuations due to its control strategy and switch tube integration inside the chip. The peak conversion efficiency can reach 90%.