To meet the demands of humanoid robot joint actuation for high power density, high efficiency, fast response, and high reliability, this paper systematically reviews the key technologies and development trends of motor gate driver ICs. It first analyzes the differentiated requirements of various joints in terms of power, voltage, and control performance, and compares the technical characteristics of silicon-based and GaN power devices. Then, focusing on four major trade-offs—switching speed versus electromagnetic interference, dead-time optimization, signal transmission rate versus common-mode transient immunity, and power density versus thermal integration—it surveys promising technologies including active gate driving, dead-time optimization, high-reliability signal transmission, monolithic integration, and intelligent sensing. Finally, it summarizes the technology roadmaps for different joint types and points out that high-frequency operation, integration, intelligence, and specialization will be the future development directions.