Air conditioning device and corresponding power supply including a single buck converter with a SiC diode, an attenuator and a ferrite bead
An air conditioning device includes a buck converter which comprises a switching device, an inductor, a diode and at least one capacitor. The diode is a SiC diode, and the buck converter further includes an attenuator associated to the SiC diode and a ferrite bead associated to the switching device.
1. An air conditioning device comprising:
an air conditioning unit; and
a power supply,
wherein
the power supply comprises a single buck converter, wherein the single buck converter comprises a switching device, an inductor, a diode and at least one capacitor,
the inductor has an inductivity equal to or greater than 4.7 mH,
the diode is a SiC diode,
the single buck converter further includes
an attenuator connected in parallel with the SiC diode, and
a ferrite bead connected to the switching device, and
the switching device is configured to switch between ON and OFF states to operate the single buck converter in a continuous current mode during which current flowing through the inductor does not stop.
2. The air conditioning device according to claim 1 , wherein the ferrite bead is connected to an input of the switching device.
3. The air conditioning device according to claim 1 , wherein the attenuator includes a snubber circuit connected to the SiC diode.
4. The air conditioning device according to claim 3 , wherein the snubber circuit is connected in parallel with the SiC diode.
5. The air conditioning device according to claim 1 , wherein the single buck converter is free of a ground plane below the inductor, the SiC diode and the switching device.
6. The air conditioning device according to claim 1 , wherein the single buck converter is configured for an input voltage from 70 to 560 V DC.
7. The air conditioning device according to claim 1 , wherein the single buck converter provides an output voltage 15V DC.
8. A power supply comprising a single buck converter, which includes a switching device, an inductor, a diode and at least one capacitor, wherein:
the inductor has an inductivity equal to or greater than 4.7 mH;
the diode is a SiC diode;
the single buck converter further includes
an attenuator connected in parallel with the SiC diode, and
a ferrite bead connected to the switching device; and
the switching device is configured to switch between ON and OFF states to operate the single buck converter in a continuous current mode during which current flowing through the inductor does not stop.