CPC H02M 1/0009 (2021.05) [H02M 3/157 (2013.01); H02M 3/158 (2013.01)] | 20 Claims |
1. An apparatus configured to measure a load current provided to a load of a switching converter, the apparatus comprising:
a pulse generation circuit configured to generate a control pulse based on a power switch driving signal of the switching converter;
a reference current generation circuit configured to generate a reference current based on the control pulse;
a clock generation circuit configured to generate a clock signal based on the control pulse and the reference current; and
a clock counter configured to count a number of cycles of the clock signal during a switching period of the switching converter,
wherein the reference current generation circuit is configured to adjust the reference current to compensate for a leakage current generated in the clock generation circuit during the switching period.
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