Infineon Expands CoolGaN Portfolio with New Device Tailored for Premium Audio Systems

October 29 2019, 02:10
Infineon Technologies broadened its CoolGaN series with two new devices: the CoolGaN 400 V and the CoolGaN 600 V. Gallium nitride (GaN) offers fundamental advantages over silicon, with outstanding specific dynamic on-state resistance and smaller capacitances compared to silicon MOSFETs. The new CoolGaN 400 V device will appeal to audio product designers looking for a premium solution for home or professional Class D amplifiers, and car audio systems that are able to translate high resolution audio material.

The CoolGaN 400 V (IGT40R070D1 E8220) is tailored for premium HiFi audio systems where end users demand every detail of their high resolution sources, which have been conventionally addressed typically by bulky linear or tube amplifiers. With the CoolGaN 400 V switch as a Class D output stage, audio designers are able to deliver an excellent listening experience that will rival top quality designs.

The CoolGaN 400V e-mode GaN HEMT is a derivative of the industry benchmark CoolGaN 600V technology. This enhancement-mode power transistor (IGT40R070D1 E8220) overcomes the technology barriers, such as linearity and power loss, by introducing zero reverse recovery charge in the body diode and very small, linear input and output capacitances.

The CoolGaN 400 V switch enables smoother switching and more linear class D output stage by offering low/linear C oss, zero Q rr, and normally-off switch. 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 400 V 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 user is a 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 (IRS20957STRPBF) in an evaluation board.

The CoolGaN 600 V industrial-grade device (IGLD60R190D1) 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 within the Infineon CoolGaN family meets JEDEC standards.

Infineon’s CoolGaN 600 V portfolio is now also extended with a new 190 mΩ, industrial-grade HEMT. This product 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 8x8 packaging and the matching driver ICs from the GaN EiceDRIVER series.

The CoolGaN 400 V (IGT40R070D1 E8220) and the new CoolGaN 600 V (IGLD60R190D1) devices can be ordered now. The evaluation board EVAL_AUDAMP24 will be available for order in February, 2020.
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