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An SMPS having a saftey arrangement, a method of operating a SMPS, and a controller therefor
An SMPS having a saftey arrangement, a method of operating a SMPS, and a controller therefor
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机译:具有安全管理的SMPS,操作SMPS的方法及其控制器
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摘要
A switched mode power supply (SMPS) is disclosed. The SMPS includes a mechanism for discharging charge stored in an input capacitor, upon the SMPS becoming disconnection from the mains, for instance by being unplugged. The SMPS includes a detector for detecting the disconnection of the mains, and a discharge circuit. The discharge circuit comprises a discharge element. The discharge element may be a part of the SMPS which is used otherwise, for instance, a high- voltage current source, or a bus capacitor or it may be an additional element, for instance a resistance load. The discharge circuit is adapted for, in response to the detector detecting a disconnection of the mains, discharging the input capacitor along a path. The detector controls a switch which engages the discharge circuit upon the detection. The switch forms a part of the discharge path. Also disclosed are methods of operating an SMPS including a safety arrangement, and a controller adapted or configured to operate such methods.
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