Does your PSU have a RHPZ? How to solve this problem

In this video Dr Ali Shirsavar from Biricha, and supported by @OMICRONLabTutorials, explains in clear and simple terms what we mean by right half plane zero (RHPZ), the problems that is causes, how to identify if your PSU has a RHPZ and how to design our power supply control loop to mitigate its impact.

[esoterex]

There are a few ways to avoid right hand plane zeros in a flyback. If your applications allows it one can use DCM (Discontinuous Mode Conduction). The other way is to use a controller that does
not allow a duty cycle beyond 50%. But these also have disadvantages, higher peak currents for example. Flybacks, despite their apparent simplicity are surprisingly complex circuits.
Maybe Dr Ali could do a video on that. Otherwise an other excellent video as all his others. Learned a great deal from him.

[yl]

Wow!! I have never seen such a crystal clear explanation!

[banchanaluck]

Your BIG FAN from Thailand. Thank for your informative videos Dr. Ali

[DudleyToolwright]

Nicely explained. You were correct, you explanations are very easy to follow.

[volodymyrzakolodyazhny]

RHPZ - Right Half-Plane Zero. Hear about this term for the first time. Thank you.

[basaltnow]

very good explained, I have the sensation that many designers forget about the RHPz. I usually use a pole zero diagram in addition to the bode plot.

[filips]

Your flyback topology is wrong, the forward biased dot, being inverted, cannot deliver any power to the load. The dot is down and the diode is reversed.