Infineon Technologies' CoolSiC products have been adopted by Delta Electronics, a Taiwan-based global power and power management solutions provider, to enable a major step towards energy transition and carbon neutrality with green energy.
With the successful development of bidirectional inverters, a three-in-one hybrid system that integrates solar power, energy storage and electric vehicle (EV) charging, Delta is enabling EVs to become home emergency backup power.
The bidirectional inverter can be used to provide power to charge electric vehicles (EVs) and home batteries, while also acting as backup power for unexpected outages and as a high-efficiency green power control core.
Infineon's products include the 1200V M1H CoolSiC EasyPACK 1B and 1200V CoolSiC D²PAK 7-pin modules, a surface mount device. The integration of three applications is also a milestone. This three-in-one system has been realized in a compact package of just 425 x 865 x 160 mm 3 . With an output power of around 10 kW, the system allows a maximum continuous current of 34 A and achieves peak efficiencies of over 97.5%.
“Infineon is a trusted brand that has been leading the development of power and energy-efficient semiconductors for many years,” said Raymond Lee, director of the Delta PV Inverter business unit. “With the company’s devices, we were able to integrate three applications into one system, allowing us to take a giant leap towards green energy.”
One of the essential elements for creating the three-in-one system includes the 1200 V M1H CoolSiC EasyPACK 1B module (F4-23MR12W1M1_B11) with integrated NTC temperature sensor and PressFIT contact technology. The module offers maximum flexibility and high current density. Featuring best-in-class package technology combined with CoolSiC MOSFETs, the module features a low inductivity design with minimal switching and conduction losses. Additionally, high switching frequency operation is enabled on the client side, which allows for smaller system designs.
The EasyPACK module helps optimize development time and reduces overall costs for the customer.
Several other Infineon components are used in the system, including devices using CoolMOS C7 and TRENCHSTOP 5 IGBT technologies. Additionally, the 1200V CoolSiC MOSFET (IMBG120R350M1H) in a surface-mounted device (SMD) package, the 7-pin D²PAK, is also part of this system. This device uses .XT interconnect technology to achieve best-in-class thermal properties as well as the Kelvin source concept. MOSFETs ensure very low switching losses, improving system efficiency.
“We are proud to be a big part of this project, representing an important milestone on the path to carbon neutrality,” said Dr. Peter Wawer, president of Infineon's Industrial Energy Control Division. “We look forward to a long-term collaboration between Infineon and Delta and are proud that our devices contribute to this smart energy solution.”
The devices include a 3 µs short circuit resistance and the MOSFETs provide full slew rate control (dV/dt) as well as a reference gate threshold voltage (V). GS(º) ) of 4.5 V. They are also robust against parasitic activation and can be operated with a turn-off voltage of 0 V. In addition, MOSFETs contain a robust body diode that allows difficult switching. Packaging clearance and creepage distances are 6.1 mm.
Additionally, the SMD package allows direct integration into PCBs with natural convection cooling without additional heat sinks.