tps92210 613

Lubo,

Firstly the TPS92210EVM-613 is to help customers to evaluate the topology and is not a fully manufacturable design, so does not have EMI plots etc.. The EVM is actually a single layer board. The internal layer is only for bringing out test points to help with evaluation.

For a closer to manufacturing design take a look at the PMP6003, this has been tested for EMI in our internal lab.

Regards,

Richard.

thank you,,I will do the pcb -equipment ,and goint to go in a pcb house ,

thank you very much ,again

pest regards

what about pfc on this schematic??

Lubo,

This design uses fixed on time (see equation below) to achieve a power factor of greater than 0.9 at 265VAC and >0.94 at 230VAC. THD is less than 12%.

I_in = (t_on/Lp) x V_in, since t_on and Lp are fixed I_in = k x V_in, so I_in tracks V_in.

Lp= primary inductance of coupled inductor/transformer. V_in is rectified input voltage, no large capacitor is used after the bridge to create a DC as is normal with AC/DC converters. So the  transformer sees the rectified input voltage.

Regards,

Richard.

thank about illustrative in this EVM..

What about a suppressor after fuse F1 pmp6003 smaj250ca,,example

Why did you put a question for discussion to the collective ?

bye bye

regards Lubo