Interference suppression for switched mode power supply

摘要

The invention relates to a switched mode power supply comprising at least one switch and at least one inductor, the at least one switch being arranged to connect one terminal of the at least one inductor to one of a plurality of supply voltages, the other terminal of the at least one inductor providing a supply output, and further comprising a capacitor connected in parallel with the at least one inductor.

主权项

1. A switched mode power supply comprising:
a first switch; a first inductor connected with the first switch, wherein the first switch is arranged to:
connect a first terminal of the first inductor with a first voltage when the first switch is in a first switching state; andconnect the first terminal of the first inductor with a second voltage when the first switch is in a second switching state; a first capacitor connected in parallel with the first inductor between the first terminal and a second terminal of the first inductor; a second switch; a second inductor connected with the second switch, wherein the second switch is arranged to:
connect a first terminal of the second inductor with the first voltage when the second switch is in a third switching state; andconnect the first terminal of the second inductor with the second voltage when the second switch is in a fourth switching state, wherein the second terminal of the first inductor and a second terminal of the second inductor are configured to provide a supply output; and a second capacitor connected in parallel with the second inductor between the first and second terminals of the second inductor.