Loop Measurement of Digital Peak Current Mode Control

This article by Dr. Michael Hallworth and Dr. Ali Shirsavar investigates a microcontroller-based peak current mode control of a Buck converter.

The proposed solution uses a discrete-time controller with digital slope compensation implemented using only a single-chip microcontroller. Detailed frequency response measurements are taken using the OMICRON Lab Bode 100 to confirm the stability of the converter.

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Dr. Michael Hallworth is a senior design engineer at XP Power. He holds a Ph.D in the digital control of switch mode power supplies and has published academic papers and technical articles in the field of digital power and power supply design. At XP, Michael works in the custom power team based in Pangbourne, UK, which is responsible for ground up custom products to meet a variety of bespoke customer requirements.
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Dr. Ali Shirsavar founded Biricha Digital Power over a decade ago. Prior to that he was a senior academic a leading UK university specializing in Power Electronics. He is well known throughout our industry for his excellent training workshops on power supply design and EMC.
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