Determination of one or more operating parameters for a switched-mode power supply

A non-transitory computer readable storage device storing instructions that, when executed by one or more processors, cause the one or more processors to measure operating parameters for a switched-mode power supply by a plurality of operations comprising:

• obtaining from a sensor an output waveform representing an output of the switched-mode power supply over a time window at a transition of that output from a first output level to a second output level;
• removing a high frequency component from the output waveform to generate a modified waveform;
• determining a stable value of the modified waveform over a portion of the time window by at least:
• determining an error band based on the output waveform;
• and
• identifying a first time at which a voltage level of the modified waveform exceeds or is less than the error band, wherein the portion of the time window is bounded by the first time;
• determining, based on the modified waveform and the stable value, an overshoot value at the output of the switched-mode power supply and an undershoot value at the output of the switched-mode power supply;
• and
• outputting indications of the overshoot and undershoot values.

An apparatus configured to measure operating parameters for a switched-mode power supply, the apparatus comprising:

• one or more processors;
• and
• a memory storing instructions that, when executed by the one or more processors, cause the one or more processors to:
• obtain from a sensor an output waveform representing an output of the switched-mode power supply over a time window at a transition of that output from a first output level to a second output level;
• generate a modified waveform by removing a high frequency component from the output waveform;
• determine a stable value of the modified waveform over a portion of the time window by at least:
• determining an error band based on the output waveform;
• and
• identifying a first time at which a voltage level of the modified waveform exceeds or is less than the error band, wherein the portion of the time window is bounded by the first time;
• determine, based on the modified waveform and the stable value, an overshoot value at the output of the switched-mode power supply and an undershoot value the switched-mode power supply;
• and
• output indications of the overshoot and undershoot values.