onsemi AFGHL50T65SQD: 650V, 50A IGBT with Advanced Field Stop Technology
Power electronics design continually demands components that offer higher efficiency, greater power density, and improved reliability. The onsemi AFGHL50T65SQD is a state-of-the-art Insulated Gate Bipolar Transistor (IGBT) engineered to meet these exacting requirements in high-power applications. This device combines a 650V breakdown voltage and a 50A continuous current rating with advanced Field Stop technology, establishing a new benchmark for performance in its class.
A key innovation of this IGBT is its Advanced Field Stop (FS) structure. This technology is pivotal in optimizing the trade-off between two critical parameters: low saturation voltage (Vce(sat)) and switching losses. The thin wafer Field Stop design creates a weaker electric field slope in the drift region, allowing for a much thinner silicon wafer. This results in a significant reduction in both conduction and switching losses compared to previous generation technologies like Non-Punch-Through (NPT) IGBTs. The outcome is higher overall system efficiency and the ability to operate at higher frequencies.
The device is housed in a low-inductance TOLL (TO-Leadless) package. This surface-mount package is designed for high-current applications and offers a more compact footprint than traditional through-hole packages like TO-247. Its leadless design minimizes parasitic inductance, which is crucial for suppressing voltage overshoot during high-speed switching. This leads to more stable and robust operation, enhanced thermal performance due to a large exposed pad, and ultimately, a higher power density design.
The positive temperature coefficient of Vce(sat) is another vital feature. This characteristic allows for the straightforward parallel connection of multiple IGBTs to handle even higher currents. As temperature increases, the Vce(sat) also rises, ensuring current is shared more evenly between parallel devices and preventing thermal runaway.
Furthermore, the AFGHL50T65SQD features a co-packaged reverse recovery softness diode. This anti-parallel diode is optimized for soft recovery, which minimizes ringing and electromagnetic interference (EMI) in applications like motor drives and inverters. This integration simplifies circuit design, reduces the component count on the board, and enhances the overall reliability of the power stage.
ICGOOODFIND: The onsemi AFGHL50T65SQD represents a significant leap in IGBT technology, perfectly suited for demanding applications such as industrial motor drives, solar inverters, UPS systems, and welding equipment. Its combination of Advanced Field Stop technology for exceptional efficiency, a low-inductance TOLL package for high power density and robustness, and integrated soft recovery diode makes it an outstanding choice for designers pushing the limits of performance and reliability.
Keywords: IGBT, Field Stop Technology, Low Inductance, High Power Density, Switching Losses
