| 摘要 |
An energy tracking system comprises at least one switching element, at least one inductor and a control circuit to keep the output voltage at a pre-selected level. An example energy tracking system (200) has energy transfer blocks (202, 204), a control circuit (201) and reference impedance (205). Each energy transfer block (202, 204) has a diode Di, switched transistors SWia, SWib, and an inductor INDi coupled between a switched transistor and an output of the block. The control circuit (201) compares the output voltage of the system to a reference value and controls the switching of transistors (SWS1a, SWS1b, SWSia, SWSib) in order to transfer energy for the primary voltage into a secondary voltage at the system output. The control circuit receives a signal from an ON-time and OFF-time generator and generates switching signals for the switching elements in the form of ON-time pulses with a constant ON-time. |
