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公开(公告)号：US12170479B2
公开(公告)日：2024-12-17
申请号：US17951469
申请日：2022-09-23
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Tuanbao Fan , Ningbo Sun , Xiaoshan Shi , Yi Wang
Abstract: A power management system includes a direct current-direct current DC-DC conversion circuit, a first control circuit, a charging circuit, an input port, and an output port. The input port is configured to receive an input voltage. The output port is configured to supply an output voltage to a load. The DC-DC conversion circuit is configured to charge the output port from the input port, to adjust the output voltage. The first control circuit is configured to: obtain a second feedback voltage of the output voltage from the output port, generate a first control signal based on the second feedback voltage and a second reference signal, and supply the first control signal to the charging circuit. The charging circuit charges the output port from the input port based on the first control signal, to supplementally adjust the output voltage.
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公开(公告)号：US20240427406A1
公开(公告)日：2024-12-26
申请号：US18824694
申请日：2024-09-04
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Tuanbao Fan , Eitan Rosen , Ningbo Sun , Yang Wang , Xiaoshan Shi , Mingfeng Jiang , Yu Liu , Zhangrong Hu
Abstract: A power supply circuit and a frequency adjustment method are provided, to improve running stability of a processing module (200). The power supply circuit obtains an operating voltage of the processing module (200), and generates, based on the operating voltage, a clock signal that indicates an operating frequency of the processing module (200), so that the processing module (200) runs at an operating frequency corresponding to a current operating voltage. Even if the operating voltage fluctuates, running of the processing module (200) is not affected. This improves running stability of the processing module (200) without increasing power consumption.
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