Monday, June 8, 2009

SMPS Journey Update

After several countless nights without REM sleep and tons of downloads from the net, I finally managed to get my SMPS to work as intended. Final board shown below. Few learning points for me on SMPS.

  • The rectifier diode recovery time is a critical parameter. Consider the switching frequency in diode selection. Slow diode will result in short circuit like behaviour on the secondary.
  • Use of snubber circuit on the mosfet help to reduce the voltage spikes.
  • Filtering and emi protection for sensitive digital circuit.
  • Capacitor explodes with big bang... :-)

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