[SOLVED] Single capacitor half bridge converter

[mrinalmani]

Hello everyone,
I have a cheap AC-DC SMPS board with 230V in and 54V-20A DC out.
There are only two MOSFETs driving the transformer primary and the FETs are in a half bridge configuration. There is a total of 1000uF HV bulk capacitor that is not center tapped. I suspect there is also a 5uF capacitor in series with the primary winding of the transformer.
What type of half bridge configuration is this that has non-split capacitor configuration?
I also did Chat-GPT and it seems to tell me a lot about this type of configuration and also gave me a comparison table. But I am unable to find any information about it on the internet.
Here is a screenshot from CHAT-GPT

Please give your feedback. Is this type of configuration in use?
Thank you

 

[FvM]

There are only two MOSFETs driving the transformer primary and the FETs are in a half bridge configuration. There is a total of 1000uF HV bulk capacitor that is not center tapped. I suspect there is also a 5uF capacitor in series with the primary winding of the transformer.

In other words you didn't analyze the circuit throroughly, do you want us to guess what the circuit is? A small capacitor like 5 uF is probably a series resonant capacitor. If it's used in combiaton with a large DC link capacitor, there's no significant behavioral difference to a "split capacitor" configuration.

Without referring to an correct circuit description, the ChatGPT answer is inappropriate and misleading. Spare us the gibberish.