Abstract: Quadruped robots exhibit broad application prospects in the field of power inspection due to their all-scenario adaptability. To address the issues of significant current ripple and insufficient output power in existing motor drivers for quadruped robots, this study proposes a conditioning circuit that employs operational amplifiers combined with common-mode and differential-mode dual filtering. A frequency-domain model is established, and parameter design is carried out, with experimental validation confirming the precision of current sampling ripple. Subsequently, theoretical analysis and modeling of the thermal power consumption in the three-phase bridge circuit are conducted, and the power capacity is enhanced by adopting an aluminum substrate process. Finally, experiments verify that the motor driver possesses the capability for sustained high-current and high-power output under high temperatures, meeting the requirements of power inspection.