kicad-developers team mailing list archive

[Vesa Solonen <vesa.solonen@xxxxxxxx>]

19.10.2012 22:41, Miguel Angel Ajo Pelayo kirjoitti:
> Nice Vesa, does it handle ADC sync to PWM (useful for SMPS) and dead band
> control in PWM ? -)
120 does not, but 230 seems usable.

> I'm using some SMPS dspic chips that handle that, but 32bits and free
> toolchains would be even better.
I've kept away from (DS)Pic because of their weird architecture, 
toolchain limitations and power consumption. Atmel AVR XMega has very 
interesting advanced pwm unit with dead time hardware, but no real 
experience on that yet. I have one test board for xmega32a4u waiting for 
some software.
Can you tell any more details of your application, like converter 
topology etc? In my case main interest is phase shifted full bridge 
converters with synchronous rectification and full load range soft 
switching. Integrated magnetics, swinging choke filtering and load plane 
optimisation for dead times. Induction heating converters as well, but 
generally it is easier there. Power levels 2kW and up, but an easy 
access upper limit is at 22kW. Fortunately I'm still evaluating 
transformer designs for 3kW level. Current designs are two tier feedback 
systems with analogue controller plus digital optimiser/low bandwidth 
feedback.
In case you need an easy boost PFC without much firmware work, it may be 
a good idea to check Infineon ICE3PCS series. Their digitally filtered 
voltage feedback gives excellent load and line response and low current 
distortion.
-Vesa