| 摘要 |
A voltage converter (100) includes a transformer circuit (102), a filter (104), and a controller (106). The transformer circuit is coupled to the filter, and the controller is coupled to the transformer circuit and the filter. The transformer circuit includes an input port (108 ) and an autotransformer (202) coupled to the input port. The voltage converter receives an input signal (126) at the input port (108) and generates a transformer output signal (134) from transformer output output port (110). The filter receives an output signal (134) on filter input port (116) and the filter generates on output signal (128) at an output port (118). The controller receives the output signal (128) form the filter and provides one or more control signals (130, 132) to the transformer circuit to control the output signal (128). A method includes receiving a first input signal (126) on an input port (108) at a transformer circuit (102) including a first coil (216) and a second coil (218), activating a first switch (206) to serially connect the first coil to the second coil, activating a second switch (208) to connect the second coil to a second input port (212), deactivating the first switch and the second switch, and activating a third switch (210) to connect the first switch to the second input port (212).
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