YSPRING motor main control + gallium nitride (GaN) driver
Empowering dual tracks of robotic joints and smart home appliances
Currently, there are common pain points in the robot joint drive and home appliance industries, such as high switching losses, insufficient control accuracy, large module size, low energy efficiency, and a single supply chain. Humanoid robots' multi-joint modules have stringent requirements for miniaturization, high-speed response, and low heat generation. Home appliance systems such as refrigerators, air conditioners, washing machines, and high-speed fans pursue energy saving, quiet operation, and low cost.
YSPRING has launched a domestically produced full-stack gallium nitride (GaN) motor drive integration solution. The main controller utilizes YSPRING's dedicated MCU for motors, while the low-voltage robot joint power side is equipped with Innoscience's integrated half-bridge GaN chip. The high-voltage home appliance circuit is paired with 700V GaN transistors. The solution integrates hardware architecture, FOC control algorithm, and communication development, supporting two major application scenarios: 48V industrial robot joints and AC 220V home appliances. It combines four core advantages: domestically produced high cost-effectiveness, high frequency and low loss, high-precision closed-loop control, and minimal development effort. YSPRING provides equipment manufacturers with a mature GaN drive solution that can be directly mass produced.
YS32M410 is a Cortex-M4F core master controller specially designed by YSPRING for BLDC/FOC servo control, serving as the computational core of the entire solution:
· Computation power adapts to complex closed-loop control: 120MHz clock speed + hardware FPU floating-point unit, 80KB Flash + 12KB SRAM, capable of smoothly running complex motor algorithms such as three-loop PID, FOC, feedforward compensation, etc;
· Professional motor simulation peripherals: 2 channels of 2.5MSPS high-speed 12bit ADC, 3 channels of 70MHz programmable PGA, high-speed comparator, two-channel resistance current sampling for distortion-free acquisition, accurately capturing motor phase current and bus voltage; advanced Timer outputs 3 channels of complementary PWM, compatible with 100kHz high-frequency GaN switch driver;
· Full coverage of communication interfaces for all scenarios: Integrated CAN2.0B, multiple UART/SPI/I2C, robot-side compatible with CAN and magnetic encoder SPI communication, home appliance-side supports fan panel and electronic control board serial port interaction;
· Wide temperature stable mass production attributes: -40℃~105℃ industrial temperature range, LQFP48/64 dual package.
For the low-voltage scenarios of 48V robot joints and collaborative robotic arms, three ISG3204LA chips are used to build a three-phase drive system, replacing the traditional discrete MOSFET + pre-driver solution:
Integrated minimalist design: Single 5×6.5mm LGA package, with built-in upper and lower bridge GaN power transistors + gate driver, achieving one phase half-bridge with a single chip, and only requiring 3 chips for three phases. The PCB layout area is reduced by 40%, perfectly fitting micro joint drive boards with diameters up to 80mm;
Ultra-low loss and high-frequency characteristics: 100V voltage withstand, typical on-resistance of 2.4mΩ, no reverse recovery charge, PWM frequency support up to 100kHz, dead time as low as 200ns; compared to silicon-based MOS solutions, the overall switching loss is reduced by 24.5%, peak efficiency at 48V operating conditions reaches 98.23%, and external radiators can be omitted for low-power joints, significantly reducing module weight and volume;
Integrated drive and protection: Built-in overcurrent, overtemperature, and undervoltage lockout protection, with adjustable independent high and low side gate drive strength, easily suppressing high-frequency EMI and reducing the cost of overall EMC rectification; peak output of 60A phase current, covering the joint power range of 50W~1kW for humanoid robots and collaborative robots.
For 220V AC variable frequency home appliances (air conditioning compressors, washing machines, high-speed hair dryers, and ventilation fans), a three-phase inverter circuit is built using six ISG6136A chips:
· High-voltage and high-efficiency gallium nitride characteristics: 700V voltage tolerance, typical Rds (on)=350mΩ, gate charge Qg only 1.5nC, zero reverse recovery loss; full-load overall efficiency up to 98%, temperature rise reduced by more than 10℃ under the same power, achieving silent and long-lasting operation for home appliances;
· Minimal peripherals + high reliability: Built-in ESD protection, compatible with PFC, LLC, and three-phase inverter full topologies, requiring only a small amount of resistance and capacitance in the peripherals of a single device, simplifying the design of home appliance power boards; operating temperature range of -55℃~150℃, suitable for long-term uninterrupted operation of refrigerators and air conditioners;
· Cost substitution advantage: It can directly replace traditional IGBTs and high-voltage silicon MOSFETs, reducing the number of components and simplifying the heat dissipation structure. The overall BOM cost is reduced by 12% to 18%, and it is compatible with a full range of variable-frequency home appliances from 30W to 300W.
Traditional silicon-based drivers suffer from significant switching losses, bulky heat sinks, and cumbersome modules. This solution achieves a performance leap by using GaN devices throughout the entire chain:
· The robot-side ISG3204LA integrates a half-bridge, eliminating the need for six discrete MOSFETs and pre-driver ICs. This reduces the size of the drive board and the weight of the joint module, enhancing the robot's load ratio and motion compliance;
· The ISG6136A in home appliances features high-frequency and low-loss characteristics, eliminating the need for metal heat sinks, reducing the overall thickness, and allowing for more flexible internal structural design of home appliances;
· With the same power, the overall power consumption is reduced by 15% to 25%, improving the endurance of robots. The energy efficiency of household appliances can easily meet the new level of energy efficiency standards, in line with national energy-saving policies.
Complete FOC software library, accompanied by exclusive host computer debugging tool (ChipView):
· Multi-feedback closed-loop compatibility: Native support for SPI magnetic encoders, incremental photoelectric encoders, and Hall sensors, ensuring smooth joint movement and precise positioning for robots;
The core components of the entire solution are all sourced from domestic original manufacturers, eliminating the risks associated with long supply cycles, price hikes, and supply disruptions from overseas chip suppliers:
· Main controller: YS32M410, YS32F031 (MCU dedicated to domestic motors);
· GaN power devices: Innoscience ISG3204LA, ISG6136A (leading domestic gallium nitride manufacturers);
Optional domestic substitutes are available for supporting DCDC, operational amplifier, and communication transceivers, ensuring stable delivery and controllable costs for bulk purchases. This meets the high-volume production needs of industries and home appliances.
Complementary development resources significantly lower the threshold for customer development:
· Publicly available free resources: hardware schematics, BOM lists, basic FOC routines, and quick start guides;
· Full-process technical services: Providing guidance on hardware layout, algorithm optimization, and comprehensive follow-up from scheme design to mass production.
· Humanoid robot joint module: 48V power supply, compatible with shoulders, elbows, and hips, high response, low heat generation, lightweight body;
· Collaborative robotic arm: Supports CAN real-time communication, multi-joint synchronous control, high positioning accuracy, and is compatible with 3C assembly, logistics sorting, and flexible robots;
· AGV/Mobile Robot Power Joint: Wide voltage input, resistance to jittery voltage fluctuations, and smooth output of high torque.
· White goods inverter system: air conditioning compressor, inverter refrigerator, main drive of drum washing machine, first-level energy saving, low noise;
· High-speed fan products: high-speed hair dryers, ventilation systems, range hood DC fans, high-frequency speed regulation, lower wind noise;
· Small commercial equipment: commercial refrigerators, dehumidifiers, and variable frequency electronic controls for water pumps, ensuring long-term stable operation.
For other scenarios in the home appliance field, we have also launched a series of third-generation gallium nitride (GaN) motor drive and control integrated solutions:
Under the development trend of lightweight robots and energy-saving home appliances, YSPRING has launched the YS32M410+ISG3204LA, YS32F031+ISG6136A gallium nitride integrated motor drive solution, which combines domestic high-performance MCU with high and low voltage gallium nitride power devices to solve the two major industry pain points of robot joint miniaturization, high precision, and household appliance frequency conversion, high efficiency and power saving. The above plan will be provided by Huichun Technology with complete technical support and services from the original factory. YSPRING has established branches in multiple cities across the country, including Shenzhen, Beijing, Chengdu, Shanghai, and Foshan, which can quickly respond to customers' localized technical needs and help them accelerate product research and production progress.
YSPRING was founded in 2007, focusing on the development of embedded intelligence through "chip+algorithm". In 2011, the company acquired and integrated Taiwan's McKinsey Semiconductor, inheriting McKinsey's full range of MCU products and core technologies. Currently, it has McKinsey microcontrollers (MDT), 8-bit/32-bit general-purpose MCUs, motor specific main control MCUs, photoelectric sensors, and gesture control modules. It is a specialized and innovative small and medium-sized enterprise in Guangdong Province, a national level specialized and innovative "little giant", and has established the Guangdong Province Intelligent Sensor SOC Chip Engineering Technology Research Center. It has won the first prize of the "Shenzhen Science and Technology Progress Award", the second prize of the "Guangdong Science and Technology Progress Award", and the "Shenzhen/Bay Area Famous Brand".
YSPRING is deeply involved in the field of electric motors and has launched a family series of motor control MCUs, covering cores such as M0/M23/M4F. The original factory provides FOC/BLDC algorithm support for fan, high-speed fan, power tool, pump, personal care, cleaning appliances, intelligent travel and other scenarios.
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