| 摘要 |
The invention relates to a switched mode power supply (102) arranged to provide a switched supply at one terminal of an inductor (106), another terminal of the inductor (106) being connected to a first input of an error amplifier (104) having a reference signal (VREF) at a second input, the error amplifier (104) generating a corrected switched supply at an output in dependence on the difference between signals at its first and second inputs, there being provided a feedback path (200) between the output of the error amplifier (104) and the first input of the error amplifier (104), and further comprising circuitry for sensing a switcher interference current in the feedback path (200) of the error amplifier (104), and for adjusting the corrected switched supply output to reduce the switcher interference current in the output. |
