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New 650V CoolSiC hybrid IGBT

Infineon Technologies has launched a 650V CoolSiC Hybrid IGBT portfolio in a discrete package with 650V blocking voltage.

The CoolSiC hybrid product family combines key benefits of the 650V TRENCHSTOP 5 IGBT technology and the unipolar structure of co-packed Schottky barrier CoolSiC diodes.

Providing superior switching frequencies and reduced switching losses, the devices are especially suited for DC-DC power converters and power factor correction (PFC). These can typically be found in applications like battery charging infrastructure, energy storage solutions, photovoltaic inverters, uninterruptable power supplies (UPS), as well as server and telecom switched-mode-power supplies (SMPS).

Due to a freewheeling SiC Schottky barrier diode co-packed with an IGBT, the CoolSiC Hybrid IGBT is able to perform with significantly reduced switching losses at almost unchanged dv/dt and di/dt values.

They offer up to 60 percent reduction of E on and 30 percent reduction of E off compared to a standard silicon diode solution. Alternatively, the switching frequency can be increased at least by 40 percent with unchanged output power requirements. A higher switching frequency will allow reducing passive components size and thus lower bill-of-material cost.

The Hybrid IGBTs can be used as a drop-in replacement for TRENCHSTOP 5 IGBTs allowing an efficiency improvement of 0.1 percent for each 10kHz switching frequency without redesign efforts.

The product family creates a bridge between pure silicon solutions and high performing SiC MOSFET designs. Hybrid IGBTs can improve electromagnetic compatibility and system reliability. Because of the unipolar nature of Schottky barrier diodes, the diode can switch fast without severe oscillations and risk of a parasitic turn-on. Customers can choose between a TO-247-3 or a TO-247-4 pin Kelvin Emitter package. The fourth pin of the Kelvin Emitter package allows for an ultra-low inductance gate-emitter control loop and reduces the total switching losses.


Author
Neil Tyler

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