Breaking the Cost-Size Tradeoff: Domestic CT-2001B+CT-1902 GaN Dual-Chip Drive Solution Slashes Robot Joint Costs and Boosts Efficiency

Bot Telegraph, July 26, 2026 – The year 2026 marks the beginning of mass production for humanoid, quadruped, and logistics robots. The core bottleneck for manufacturers in scaling up lies in joint actuators. Industry data shows that 70% of the hardware cost of a robot is concentrated in joint modules, with price differences for reducers of varying specifications reaching 500 to 1,000 yuan. Traditional drive and control solutions suffer from five major pain points: “large size, high heat generation, complex parameter tuning, high mass production costs, and the inability to balance torque with miniaturization.”

To address the long-standing dilemma between performance and cost in the industry, China’s first company deeply engaged in AI + compound integrated circuits, Zhongke Wireless Semiconductor, has introduced the CT-2001B dedicated motion control ASIC + CT-1902 integrated GaN (Gallium Nitride) driver dual-chip integrated drive and control solution. Based on a fully domestic, self-developed architecture, this solution simultaneously addresses five critical industry needs from the chip level: miniaturization, high torque, low temperature rise, low cost, and easy mass production.

The complete solution consists of two core chips: the CT-2001B motion control ASIC and the CT-1902 integrated GaN driver chip, eliminating redundant components such as traditional MCUs, independent computing units, and discrete power devices. The CT-2001B adopts a dual-core 540MHz superscalar ASIC architecture, with a current loop frequency of up to 450kHz, delivering 10 times the computational performance of traditional software-based FOC. The CT-1902 is specifically designed for the mainstream 48V/80V robot power supply platforms, integrating two GaN HEMT power devices and gate driver channels on a single chip.

The two chips work in synergy, achieving cost optimization across hardware, R&D, and mass production: the number of core peripheral components is reduced by 40%, the hardware cost of joint drives is lowered by 40%, and for a robot with 12 joints, this translates to savings of approximately 20,000 yuan, resulting in a 40% reduction in overall actuator cost. The drive and control board area is reduced by 65%, freeing up space within the joints.

This solution has undergone batch verification across three major robot segments: humanoid, quadruped, and collaborative robotic arms. It has already established batch supply cooperation with nearly 20 leading domestic and international robot companies. On-site testing by leading customers has demonstrated a direct 40% reduction in joint costs, providing a mature mass production solution for the import substitution of core components in domestic robots.

Source: Bot Telegraph China