Infineon Technologies has expanded its range of gallium nitride (GaN) switches with 400V and 600V industrial versions.
The 600V IGLD60R190D1 CoolGaN HEMT transistor is aimed at low- and mid-power applications, such as in the area of low-power SMPS and telecom rectifiers. Every product within the Infineon CoolGaN family meets JEDEC standards. The 190 mΩ, industrial-grade HEMT device was 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 400V IGT40R070D1 E8220 is optimised for premium HiFi audio systems where end users demand every detail of their high resolution sound tracks. These have been conventionally addressed by bulky linear or tube amplifiers. With the 400V GaN switch as class D output stage, audio designers are able to deliver excellent listening experience to their prospective audio fans. This enables smoother switching and more linear class D output stage by offering low/linear C oss, zero Q rr, and normally-off swich. Ideal class D audio amplifiers offers zero percent distortion and 100 percent efficiency. What impairs the linearity and power loss is highly dependent on switching characteristics of the switching device. Infineon’s CoolGaN breaks through the technology barrier by introducing 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 experience.
To further simplify the design, Infineon pairs the CoolGaN 400 V device in an HSOF-8-3 (TO-leadless) package with a popular class D controller, the IRS20957STRPBF, in an evaluation board.
Both GaN devices are available now and the EVAL_AUDAMP24 evaluation board will be available for order in February, 2020.