| 摘要 |
The present invention relates to a converter circuit and a conversion method for converting an input signal to an output signal of a predetermined value based on a switched operating mode, wherein a first control loop ( 40 ) is provided for comparing the predetermined value of the output signal to a first reference value and for generating a feedback signal in response to the comparison result; and wherein a second control loop ( 60 ) is provided for comparing a time period passed until the feedback signal is generated to a second reference value and for controlling the switching parameter of the switched operating mode in response to the comparison result. As a result, the output signal is correctly controlled not only with respect to the output load but also over a wide range of the input signal, so that power efficiency and reliability can be optimized.
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