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DC-DC converter, which uses a modified Schmitt trigger circuit, and a method of modulating a pulse width.
DC-DC converter, which uses a modified Schmitt trigger circuit, and a method of modulating a pulse width.
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机译:使用改进的施密特触发器电路的DC-DC转换器以及一种调制脉冲宽度的方法。
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摘要
A DC-DC converter includes a PWM modulator, a power switch and a filter. The PWM modulator positively feeds back a pulse width modulated signal of which a pulse width and a frequency are varied to generate an oscillated signal, amplifies a difference between a negatively fed-back direct current output signal and a reference signal to output a first signal, and compares the first signal with the oscillated signal to generate first and second switching signals. The power switch transfers an input signal to a first output node in response to the first and second switching signals, and generates the pulse width modulated signal, wherein the pulse width modulated signal is provided to the first output node. The filter generates a direct current output voltage signal in response to the pulse width modulated signal, wherein the direct current output voltage signal is provided to a second output node.
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