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Current sense apparatus and method using a combination of a simulation and a real sense for a switching mode power converter
Current sense apparatus and method using a combination of a simulation and a real sense for a switching mode power converter
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机译:使用模拟和真实感相结合的电流感测装置和方法用于开关模式功率转换器
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摘要
In a switching mode DC-to-DC power converter including a high-side transistor connected between an input voltage and an output node, a low-side transistor connected between the output node and a reference potential, and an inductor connected to the output node to derive an output voltage and an output current, a current sense apparatus and method employs a ramp signal generator to generate a ramp signal with a slope proportional to the difference between the input and output voltages, a DC signal generator to generate a DC signal proportional to the DC component of the current through the low-side transistor, and a summing circuit for combining the ramp and DC signals.
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