A hot-swappable device and its input voltage overshoot suppression protection circuit
A technology of input voltage and protection circuit, applied in the direction of emergency protection circuit device, emergency protection circuit device, circuit device for limiting overcurrent/overvoltage, etc., can solve problems such as reduced work efficiency, increased maintenance cost, Efuse damage, etc. , to achieve the effect of inhibiting damage and inhibiting the phenomenon of ignition
Active Publication Date: 2022-02-18
SUZHOU METABRAIN INTELLIGENT TECH CO LTD
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Problems solved by technology
[0002] There are many hot-swappable devices in various electrical equipment at present. In the hot-swappable protection circuit in the prior art, an input capacitor with a small capacitance is arranged at the front end of the electronic fuse Efuse, and the input capacitor can suppress The ignition phenomenon during the hot plugging process, but in many cases (Efuse short circuit or hot-swappable device triggers overcurrent protection, etc.) the circuit will generate overshoot voltage, which may cause damage to Efuse, resulting in a reduction in work efficiency and increased maintenance costs
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[0033] The core of the present invention is to provide an input voltage overshoot suppression protection circuit, which improves the working efficiency of hot-swappable devices and reduces maintenance costs; another core of the present invention is to provide an input voltage overshoot suppression protection circuit comprising the above-mentioned The hot-swappable device improves the work efficiency of the hot-swappable device and reduces the maintenance cost.
[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by perso...
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The invention discloses an input voltage overshoot suppression protection circuit. Before the power connector of the hot-swappable device is fully connected to the power supply, the default disconnected control switch can isolate the energy storage capacitor from the input capacitor (to prevent the Capacitance can increase the capacitance of the input capacitor), so that the input capacitor can suppress the sparking phenomenon with its own small capacitance at the moment when the power connector and the power supply are in contact, and when the power connector and the power supply are fully connected After connection, the control device can control the control switch to be closed so that the voltage flows to the load, and when the circuit generates an overcharge voltage, the energy storage capacitor can suppress the damage to the electronic fuse by the overshoot voltage with its large capacitance. Improves hot-swap device productivity and reduces repair costs. The invention also provides a hot-swappable device, which has the same beneficial effects as the above input voltage overshoot suppression protection circuit.
Description
technical field [0001] The invention relates to the field of hot-swappable devices, in particular to an input voltage overshoot suppression protection circuit, and also relates to a hot-swappable device. Background technique [0002] There are many hot-swappable devices in various electrical equipment at present. In the hot-swappable protection circuit in the prior art, an input capacitor with a small capacitance is arranged at the front end of the electronic fuse Efuse, and the input capacitor can suppress The ignition phenomenon during the hot plugging process, but in many cases (Efuse short circuit or hot-swappable device triggers overcurrent protection, etc.) the circuit will generate overshoot voltage, which may cause damage to Efuse, resulting in a reduction in work efficiency and increased maintenance costs. [0003] Therefore, how to provide a solution to the above technical problems is a problem that those skilled in the art need to solve at present. Contents of ...
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IPC IPC(8): H02H9/02H02H11/00
CPCH02H9/02H02H11/00
Inventor 张松涛
Owner SUZHOU METABRAIN INTELLIGENT TECH CO LTD