Abstract: An inverter includes a chassis, which has a cavity that accommodates a plurality of power devices and a partition and blocking assembly. The partition and blocking assembly divides the cavity of the chassis into two installation cavities, and the plurality of power devices are disposed in the two installation cavities. The chassis includes a first side wall and a second side wall that are adjacent to each other. An air inlet of a fan of the partition and blocking assembly communicates with one installation cavity, an air outlet of the fan communicates with the other installation cavity, and a direction from the air inlet to the air outlet faces away from the first side wall. A gap exists between the partition and blocking assembly and the second side wall, or the partition and blocking assembly is provided with a through hole.

Abstract: A package structure includes a first substrate, a second substrate, pins, and a first die. The package structure is connected to a printed circuit board through the pins. The first substrate includes a first routing layer, a first insulation layer, and a first metal layer that are sequentially stacked, and the second substrate includes a second routing layer, a second insulation layer, and a second metal layer that are sequentially stacked. The first metal layer is mechanically and electrically connected to a first part of the second routing layer, and the first metal layer and the first part of the second routing layer are connected to a quiescent point. At least one die is disposed on a surface that is of the first routing layer and that is away from the first metal layer, and a contact point between the die and the first routing layer is a moving point.

Abstract: This application relates to a power consumption grading method for a network-based power supply system. The method includes: when it is detected that power overload protection is not triggered, starting a plurality of power modules of a powered device one by one in a specific order until all the plurality of power modules are started or it is detected that the power overload protection is triggered after a specific power module is started; when it is detected that the power overload protection is triggered, selecting, according to the specific order and based on the specific power module, one or more of the plurality of power modules as a power module combination of the powered device; and determining a load power of the powered device and a corresponding power consumption level based on the power module combination.

Abstract: This application discloses a power supply system, including: A first end of a bus capacitor is connected to a first end of a power supply, and a second end of the bus capacitor is connected to a second end of a semiconductor switch device. A first end of the semiconductor switch device is connected to a second end of the power supply. An input end of a power conversion circuit is connected to the bus capacitor. Two ends of a resistor are respectively connected to the first end and the second end of the semiconductor switch device. When the semiconductor switch device is switched off, the power supply supplies power to the bus capacitor by using the resistor. When a voltage of the bus capacitor is greater than a first preset voltage, an auxiliary power supply is powered on and the semiconductor switch device is switched off.

Abstract: This application relates to a power consumption grading method for a network-based power supply system. The method includes: when it is detected that power overload protection is not triggered, starting a plurality of power modules of a powered device one by one in a specific order until all the plurality of power modules are started or it is detected that the power overload protection is triggered after a specific power module is started; when it is detected that the power overload protection is triggered, selecting, according to the specific order and based on the specific power module, one or more of the plurality of power modules as a power module combination of the powered device; and determining a load power of the powered device and a corresponding power consumption level based on the power module combination.

Abstract: A powered device (PD) detection device is configured to identify a type of power sourcing equipment. The PD detection device includes a detection circuit and a processing circuit, and the detection circuit is connected to the processing circuit. The detection circuit is configured to: receive hierarchical waveform information sent by the power sourcing equipment, and generate a corresponding first-type signal or a corresponding second-type signal based on the hierarchical waveform information, and is further configured to send the first-type signal or the second-type signal to the processing circuit, where the first-type signal corresponds to first-type power sourcing equipment, and the first-type power sourcing equipment includes at least one of non-standard power sourcing equipment and a direct current adapter.

Abstract: A powered device PD detection device is configured to identify a type of power sourcing equipment. The PD detection device includes a detection circuit and a processing circuit, and the detection circuit is connected to the processing circuit. The detection circuit is configured to: receive hierarchical waveform information sent by the power sourcing equipment, and generate a corresponding first-type signal or a corresponding second-type signal based on the hierarchical waveform information, and is further configured to send the first-type signal or the second-type signal to the processing circuit, where the first-type signal corresponds to first-type power sourcing equipment, and the first-type power sourcing equipment includes at least one of non-standard power sourcing equipment and a direct current adapter.