Videos
MEASURING HIGH-PERFORMANCE POWER SUPPLY FEEDBACK LOOPS In this video, we demonstrate the low-frequency performance of the AP300 and show why you need large dynamic range and noise rejection for measuring high performance power supply control loops. |
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MEASURING HIGH-PERFORMANCE POWER SUPPLY FEEDBACK LOOPS In this video, we demonstrate the low-frequency performance of the AP300 and show why you need large dynamic range and noise rejection for measuring high performance power supply control loops. |
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Frequency Response Analysis for Power Supplies Part I - Why do you need it? In this first part of a series of videos on frequency response analysis, Dr. Ridley explains the need for frequency response analysis for switching power supplies. The high-noise environment means that time-domain waveforms are of very little use in solving stability problems. |
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Frequency Response Analysis Part II What frequency range do you need? In this second part of a series of videos on frequency response analysis, Dr. Ridley shows the frequency range of testing needed to cover just about every power application. The range starts at below 1 Hz for power factor correction feedback loops, and extends above 10 MHz for magnetics characterization. |
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Frequency Response Analysis Part III How much signal do you need? In this third part of a series of videos on frequency response analysis, Dr. Ridley shows the range of signal needed to inject into the loop of a power system. At low frequencies, with high gains, a 5 V signal often needs to be injected to overcome the noise issues. |
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Frequency Response Analysis Part IV Power Supply Loop Measurement In this fourth part of a series of videos on frequency response analysis, Dr. Ridley shows how to inject into the loop of a noisy switching power supply. Clean measurements are obtained with over 80 dB of gain at low frequencies. |
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Engineer It - How to test power supplies - Measuring Stability TI's Bob Hanrahan demonstrates how to measure stability when testing power supplies. |