| 摘要 |
An apparatus comprising a first circuit and a second circuit. The first circuit may be configured to generate an output signal oscillating at a first frequency in response to (i) a first control signal, and (ii) a second control signal. The second circuit may be configured to generate the second control signal in response to (i) an input signal having a voltage and (ii) the output signal. The second circuit may be configured to compare a peak voltage of the output signal to the input voltage.
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