Re: Capacitor Charger IC
Marko, Sat Jul 29 2006, 09:43PM

I say ZVS is much more simple, useful and powerful...

Adn for photoflash charging, usually something ultra-simple like a blocking oscillaor...

Re: Capacitor Charger IC
Sulaiman, Sat Jul 29 2006, 10:40PM

I like parallel-resonant zvs invertors - for continuous ac
for charging capacitors the zvs is far from ideal;
- inefficient at charging a discharged capacitor
- lots more wire and cores for a given power than a flyback

Blocking oscillators are very inefficient due to the required core saturation
so inefficient that they're only useful for low-power/low-cost applications.

For high-power, series-resonant or flyback are best.

This ic uses very few parts (comparable to a 555/mosfet flyback)
and has easily settable charge-rate and stops once the capacitor is charged.
Looks near ideal to me.

Re: Capacitor Charger IC
Psyko, Sun Jul 30 2006, 03:03PM

We had a discussion about a similar thing on the old board.