Huawei Technologies Co., Limited

Xiaokun Wang

Zhongjian Chen

Shibin Xu

Wujian Liu

Yanbiao Luo

Liangyi Zhang

Nianbing Li

This application provides a load line circuit and an electronic device, where the load line circuit is applied to the electronic device. A voltage value of a feedback voltage provided by the load line circuit to a switch-mode power supply is linearly and positively correlated with each of a voltage value of a first voltage and a current value of a first current, where the first voltage is a voltage provided to a load circuit, and the first current is a current provided to the load circuit. Through disposition of the load line circuit, the switch-mode power supply can implement a load line function.

Load line circuit and electronic device

This application discloses a voltage scaling method and an electronic device. The method is applied to an electronic device having a processor and a power supply that supplies power to the processor. The method includes the processor sending power supply scaling information to the power supply based on an operating frequency in a next time period. The method further includes the power supply determining, based on the power supply scaling information, a supply voltage Vused to supply power to the processor. The supply voltage Vdecreases as a load current of the power supply increases. V≤V≤V, where Vis a lowest supply voltage of the processor at the operating frequency in the next time period, and V is a specified supply voltage of the processor at the operating frequency in the next time period.

Methods and devices for voltage scaling for a processor based on predicted operating frequency

An electronic product protective case includes a rear housing and a holder which further includes a magnet assembly, and the magnet assembly includes a first magnet group and a second magnet group. The first magnet group includes a first magnet and a third magnet that have opposite polarities. The second magnet group includes a second magnet and a fourth magnet that have opposite polarities. The first magnet and the second magnet have opposite polarities. The third magnet and the fourth magnet have opposite polarities. The first magnet and the second magnet are mutually absorbed, and the third magnet and the fourth magnet are mutually absorbed.

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Shenzhen, China

Xiaokun Wang