Simple Transient-Response Measurement Determines Power-Supply Bandwidth

It’s normal to assume that there’s an easy way to relate the bandwidth of a power-supply control loop to its transient response—no good reference exists that defines this in simple terms. It seems like a straightforward problem, which should have a simple solution. The higher the bandwidth, the faster the loop responds, and with less voltage deviation.

It's not always that straight forward, however. 

MATsolutions' insight:

Ascertaining the relationship between bandwidth and response in power supplies isn’t easy, but this idea for design presents a measurement approach that helps ease the process.

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