ST and Sanken to develop intelligent power modules

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STMicroelectronics and Sanken Electric are working together to develop intelligent power modules (IPM) in high-voltage, high-power equipment designs.

The two companies are developing and will jointly market 650V/50A and 1200V/10A industrial modules, that will look to address design challenges and shrink the bill of materials for HVAC systems, industrial servo drives, industrial washing machines, and general-purpose inverters over 3 kW. The ST/Sanken IPM product roadmap will continue with 650V/50A automotive-grade modules for high-voltage compressors, pumps, and cooling fans.

Commenting Marco Monti, President, Automotive and Discrete Group, STMicroelectronics, said, “These new devices extend our established STPOWER SLLIMM portfolio with a High-Power (HP) product line to address applications over 3 kW and introduce our first automotive-grade IPMs that permit sleeker designs and greater reliability.”

IPMs enable designers to replace traditional power circuits built using discrete components with a compact, integrated device that simplifies circuit layout and PCB design, helping to accelerate time to market and improve cost-effectiveness and reliability. Leveraging easier manufacturing, faster assembly, and bill-of-materials savings, designers of high-voltage equipment can create new generations of power products that are space-saving, economical, energy-efficient, and robust.

The new IPMs integrate a complete inverter stage including six short-circuit rugged IGBTs with freewheeling diodes, associated high-side and low-side gate drivers in a single package designed optimally for thermal efficiency. Ready to operate in hard switching up to 20 kHz, the modules contain built-in features for protection and control. These include bootstrap diodes, short-circuit protection, under-voltage lockout protection for gate drivers, a 100 kΩ thermistor for temperature monitoring, and a comparator for fault protection.

Additional benefits that simplify design for users and enhance safety and reliability include:

  • 3.3V/5V TTL/CMOS-compatible inputs with hysteresis
  • Shutdown input and Fault output
  • Separate open-emitter outputs
  • Very fast, soft-recovery diodes
  • Fully isolated package with isolation rating of 2500Vrms/min