The new devices include super-junction transistors (MOSFETs) that are capable of withstanding peak voltages up to 950V as well as 900V devices offering best-in-class energy efficiency and 850V devices offered in the ultra-thin and space-saving PowerFLAT 8x8 HV package.
Super-junction technology enables MOSFETs to achieve higher operating voltages with very low electrical on-resistance in relation to device size, enabling power supplies to deliver increased system reliability and energy efficiency within compact overall dimensions.
A major supplier of super-junction MOSFETs, ST now offers one of the highest voltage ratings in the market as well as the industry’s only second source of 900V super-junction devices. The MOSFET family will soon be extended to include new 800V devices.
Super-junction technology for a greener world
ST also demonstrated the efficiency of the SuperMESH 5 devices in its first successful customer application for its ultra-high-voltage MOSFETs. TCI, an Italian solid-state lighting innovator chose the 950V STU6N95K5 in IPAK package as the main power switch in its latest LED drivers for advanced and feature-rich LED lamps offering benchmark energy efficiency in a physically compact and cost-effective form factor.
Other popular high-volume applications for ST’s new super-junction MOSFETs include flat-panel televisions, PC power supplies, LED lighting drivers, and electronic ballasts for High-Intensity Discharge (HID) lamps. The MOSFETs will enable designers to meet increasingly strict limits on maximum power and minimum energy efficiency specified by eco-design standards such as Energy Star and the EU’s Energy-related Products (ErP) Directive.
The high voltage rating of ST’s new super-junction MOSFETs increases system safety and reliability, benefitting HID lamp ballasts and other systems operating at AC line voltages and higher, such as solar micro-inverters and charging points for electric vehicles.
Key features of SuperMESH 5 MOSFETs:
- First in ST’s SuperMESH 5 fifth-generation super-junction family
- Range includes 900V STx21N90K5, 950V STx20N95K5 and 950V STx6N95K5 in various package options
- 850V variant in the PowerFLAT 8x8 HV package has a footprint of 64mm², 56% smaller than the industry-standard D²PAK package
- Mounted height of 1mm is 77% lower than D²PAK allowing use in ultra-slim designs