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Hello, I’m working on a project where I need to design a circuit that provides a steady output voltage (e.g., 5V) despite variations in the input power supply. My power source can fluctuate anywhere between 9V and 15V, and I’d like to ensure that the output remains consistent for sensitive electronics. I’m considering a voltage regulator but am unsure which type would be best for this range. Should I look at a linear regulator, or would a buck converter be more efficient given the input range? I’m also curious about any filtering components I might need to smooth out fluctuations. |
November 07, 2024 |
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A buck converter, while efficient in energy, may generate an unwanted ripple which can be detected with a scope handling a time scale in the 2ns range. (Place the trigger at a voltage a little bit higher than the intended steady voltage to capture the unwanted short "pulse"). That ripple may be excessively difficult to get rid of (even if you install a linear regulator later in series, the linear regulator, as most electronic filters, is just too slow to react adequately), but may be acceptable for your circuit. The voltage peak detected by your scope compared to the critical component data sheet would tell you more about it. |
by vanderghast November 09, 2024 |
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Thank you so much!!!!!!!!!! |
November 10, 2024 |
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