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Circuit for pulse duty factor limitation in a switch mode regulator, and method for operating a switch mode regulator
Circuit for pulse duty factor limitation in a switch mode regulator, and method for operating a switch mode regulator
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机译:用于开关模式调节器中的脉冲占空比限制的电路以及用于操作开关模式调节器的方法
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摘要
A circuit for pulse duty factor limitation in a switch mode regulator, having an output stage to which control is applied by a signal, is described, in which circuit a pulse duty factor limiter is connected to the switch mode regulator in order to transfer the signal to the pulse duty factor limiter; the pulse duty factor limiter is configured to generate from the signal a limited signal limited at the top end in terms of pulse duty factor; and the pulse duty factor limiter is connected to the output stage in order to transfer the limited signal to the output stage. Also proposed is a method for operating a switch mode regulator having a downstream circuit to which control is applied by a signal of the switch mode regulator and having a capacitor that becomes charged when the downstream circuit is switched off, in which method the pulse duty factor of the signal is limited at an upper limit value in such a way that a predetermined charging time for the capacitor is available.
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