Power supply systems with filters

摘要

A filter for a power supply includes at least two inputs, at least two outputs, and a common mode choke coupled between the at least two inputs and the at least two outputs. Each input includes a pair of input terminals and each output includes a pair of output terminals. The common mode choke includes a magnetic core and at least four windings extending about the magnetic core. Each winding is coupled between one of the input terminals and one of the output terminals. The filter may further include X-capacitors coupled between the at least two inputs and the at least two outputs. Also disclosed are power supply systems including one or more power supplies and a filter coupled to the power supplies.

主权项

1. A filter for a power supply, the filter comprising:
at least two inputs, each input including a pair of input terminals; at least two outputs, each output including a pair of output terminals; a pair of X-capacitors including a first X-capacitor and a second X-capacitor, each X-capacitor having a first terminal and a second terminal, the first terminal of the first X-capacitor coupled between one input terminal of the pair of input terminals of one of the at least two inputs and one output terminal of the pair of output terminals of one of the at least two outputs, the second terminal of the first X-capacitor coupled between one input terminal of the pair of input terminals of another one of the at least two inputs and one output terminal of the pair of output terminals of another one of the at least two outputs, the first terminal of the second X-capacitor coupled between another input terminal of the pair of input terminals of said one of the at least two inputs and another output terminal of the pair of output terminals of said one of the at least two outputs, the second terminal of the second X-capacitor coupled between another input terminal of the pair of input terminals of said another one of the at least two inputs and another output terminal of the pair of output terminals of said another one of the at least two outputs, and a common mode choke coupled between the at least two inputs and the at least two outputs, the common mode choke including a magnetic core and at least four windings extending about the magnetic core, each winding coupled between a different one of the pair of input terminals of each of the at least two inputs and a different one of the pair of output terminals of each of the at least two outputs than the other windings of the common mode choke.