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· JOULWATT has been granted an invention patent authorization:

Securities Star News: According to data from Qichacha, JOULWATT (688141) has obtained a new invention patent authorization, titled "Interleaved Parallel Switching Power Supply Control Circuit and Control Method", with patent application number CN201810731929. X and authorization date of April 19, 2024.Patent AbstractThe present invention proposes an interleaved parallel switch power supply control circuit, wherein the interleaved parallel switch power supply comprises a main switch circuit and a slave switch circuit. The control circuit comprises a first operational amplifier, wherein the first input terminal receives a feedback voltage and the second input terminal receives a first reference voltage. The first operational amplifier outputs a reference signal, which is used to control the upper and lower limits of the inductor current in the main switch circuit and the upper and lower limits of the inductor current in the slave switch circuit; The control circuit adjusts the upper and...
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04-20
2024
· ORIENT-CHIP has been granted a utility model patent:

Securities Star News: According to data from Qichacha, ORIENT-CHIP (688061) has recently obtained a utility model patent authorization, titled "A zero crossing detection circuit for improving the light load efficiency of switching power supplies". The patent application number is CN202322136766. X, and the authorization date is April 19, 2024.Patent AbstractThis utility model provides a zero crossing detection circuit for improving the light load efficiency of a switching power supply. The zero crossing detection circuit includes a current sampling circuit, with the input end connected to the switching voltage node and the output end of the switching power supply, and the output end connected to the input end of the offset processing circuit. During the phase of inductor current decrease, the circuit outputs a sampling current proportional to the current flowing through the rectifier tube; The input end of the circuit is connected to the output end of the current sampling circuit, and...
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04-19
2024
· XJ GROUP has been granted an invention patent authorization:

Securities Star News: According to data from Qichacha, XJ GROUP (000400) has obtained a new invention patent authorization, titled "A Monitoring Method and Device for Switching Power Supply". The patent application number is CN202111051484.9, and the authorization date is April 16, 2024.Patent abstractThe present invention relates to a monitoring method and device for a switching power supply, which monitors the state of the electrolytic capacitor by obtaining the temperature rise of the electrolytic capacitor, and adaptively switches the standby electrolytic capacitor based on the monitoring results; And monitor the power output in real time to determine whether the sampling data of the power output exceeds the predetermined threshold. By judging whether the electrolytic capacitor is normal based on its temperature rise, it is possible to quickly identify electrolytic capacitors that have aged and reduced capacity, and quickly switch to backup electrolytic capacitors, thereby extendi...
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04-18
2024
· Convert has been granted an invention patent:

Securities Star News: According to data from Qichacha, Convert (688693) has obtained a new invention patent authorization, titled "An Over temperature Detection Circuit and Switching Power Supply for High Side Switches". The patent application number is CN202410122448.4, and the authorization date is April 16, 2024.Patent Abstract: The present invention relates to the field of power integrated circuit technology and discloses an over temperature detection circuit and a switching power supply with a high side switch. The over temperature detection circuit includes a transistor Q1 and a current source. The collector of the transistor Q1 is used for electrical connection with the power supply VCC, and the base of the transistor Q1 is respectively connected to the emitter and current source of the transistor Q1; In practical use, the present invention detects temperature by utilizing the characteristic that the saturation current of the collector junction of the transistor increases with...
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04-18
2024
· Analysis Report on the Development Trends of China's Switching Power Supply Industry in 2024

1. The development trend of the scale of the switching power supply industrySwitching power supply products, with their excellent performance advantages, have become the largest category of power supply products. Their market size has grown rapidly with the growth of China's power supply industry. The market size of China's switching power supply has increased from 121.5 billion yuan in 2016 to 183.2 billion yuan in 2020.With the arrival of the "low-carbon era" with the goal of peaking carbon emissions and achieving carbon neutrality, electronic devices are tending towards miniaturization, thinness, and energy conservation, further driving the growth of the switch mode power supply market.In the future, as downstream enterprises such as new energy electric vehicles and new energy generation (photovoltaic) further increase their requirements and demands for switch mode power supply products in terms of energy conservation, environmental protection, and higher performance, the demand fo...
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04-18
2024

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