Infineon Technologies AG of Munich, Germany has broadened its CoolGaN series with two new devices. The CoolGaN 400V device is tailored for premium HiFi audio systems where end users demand every detail of their high-resolution sound tracks. These have conventionally been addressed by bulky linear or tube amplifiers. Instead, audio designers can use the CoolGaN 400V switch as the class D output stage. The CoolGaN 600V industrial-grade device enables performance and cost optimization for low- and mid-power applications, such as in the area of low-power SMPS and telecom rectifiers. Every product in the CoolGaN family meets JEDEC standards.
Infineon says that the CoolGaN 400V switch enables smoother switching and more linear class D output stage by offering low/linear Coss, zero Qrr, and normally-off swich. Suitable class D audio amplifiers offer 0% distortion and 100% efficiency. What impairs the linearity and power loss is highly dependent on the switching characteristics of the device. Infineon says that CoolGaN introduces zero reverse recovery charge in the body diode and very small, linear input and output capacitances. The resulting benefit to the end users is more natural and wider soundstage audio.
To further simplify the design, Infineon pairs the CoolGaN 400V device in an HSOF-8-3 (TO-leadless) package with a popular class D controller in an evaluation board.
The CoolGaN 600V portfolio is now also extended with a new 190mΩ, industrial-grade high-electron-mobility transistor (HEMT), developed to fit any consumer and industrial application on an optimized cost with the aim to lower the technology entry barrier. Easy design-in is supported with a standardized DFN 8×8 packaging and the matching driver ICs from the GaN EiceDRIVER series.
The CoolGaN 400V and CoolGaN 600V devices can be ordered now. The evaluation board EVAL_AUDAMP24 will be available for order in February.
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