Electronics > Projects, Designs, and Technical Stuff

international standard for ac/ac converter ("electronic transformer")

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poorchava:
Just a simple smps-based converter to step down 230V to 110V, for the life of me I can't find it on the IEC website.

ArthurDent:
If you're trying to convert 230VAC at 50Hz to 110VAC at 50Hz, that won't be that simple or cheap to accomplish electronically and a transformer/autotransformer would be far more practical.

bin_liu:
The transformer/autotransformer is very bulky, and the SMPS is very lightweight. Many Chinese companies manufacture this kind of equipment, and also design and produce car Inverter. What I know is that these products look for some loopholes and use ordinary Electronic products EMI, EMC, CE... standards for certification.

NiHaoMike:
How many amps and what kind of load? That would hugely impact what sort of solution would be the best.

poorchava:
The solution is gonna be an AC-buck topology running probably at around 40kHz (or higher if the inductor becomes too bulky) with bidirectional switches (either 2x mosfet or diode bridge + igbt) + requisite filtering to pass the emissions. We're talking about 150W output power. It's probably not even gonna be regulated - fixed PWM because the equipment can handle mains variations

It must be SMPS because of size, weight and cost.

I am only looking for the requisite standard to design to (such as 60335 for white goods and 60730 for building automation)

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