Best boost converter topology for a 400V capacitor charger

[ZeroResistance]

I want to charge a 10uF cap, upto 400Vdc, my input voltage would be 12VDC what boost converter topology would be suitable for this ?
I have seen most people using the MAX1771 but currently I don't have that part in my kitty.

Edit: I am also looking for low EMI emissions, so I would preferably like a topology that is sine wave driven.

[capt bullshot]

Use a single transistor self oscillating converter aka Joule Thief
You'd need a suitable transformer anyway

https://electronics.stackexchange.com/questions/234656/reverse-engineering-camera-flash-charger

[ZeroResistance]

Use a single transistor self oscillating converter aka Joule Thief
You'd need a suitable transformer anyway

https://electronics.stackexchange.com/questions/234656/reverse-engineering-camera-flash-charger

Many thanks bullshot, that's a novel idea, I'm wondering what kind of efficiencies does this kind of circuit exhibit and is it also notorious for noise / EMI generation?

[ZeroResistance]

Boost controller w/FET + ATB322524, that's my usual choice for low power (1~3W) high voltage power supply.

Thanks for the info blueskull is this low on EMI?

[ogden]

I want to charge a 10uF cap, upto 400Vdc, my input voltage would be 12VDC what boost converter topology would be suitable for this ?

I would use Xenon photo flash charger IC like TPS65552 or similar. Those ICs usually have "power good" indicator which is nice bonus

[capt bullshot]

Use a single transistor self oscillating converter aka Joule Thief
You'd need a suitable transformer anyway

https://electronics.stackexchange.com/questions/234656/reverse-engineering-camera-flash-charger

Many thanks bullshot, that's a novel idea, I'm wondering what kind of efficiencies does this kind of circuit exhibit and is it also notorious for noise / EMI generation?

This circuit is rather old, from ancient times where IC manufactureres didn't try to sell you a special IC for each special purpose (IC's weren't common at all then), and you'd have to come up with a simple and cost effective solution, more transistors would have been considered a waste of money. Anyway, it's so simple and effective, photo flashes were built this way over decades.

The efficiency is rather mediocre, there's some art in designing the transformer for maximum efficiency. Older designs were known for their typical whining "charging" sound, but that was because of the rather slowish transistors and diodes. Today, one can design this circuit with higher switching frequencies, so audible noise won't be a concern.
EMC and electrical noise isn't worse than any other boost converter.

[ZeroResistance]

Are there any resonant topologies suitable for this application. I believe they would be efficient and low on noise?

[ogden]

Are there any resonant topologies suitable for this application. I believe they would be efficient and low on noise?

There are quasiresonant flyback topology which indeed could be suitable for this application - in case you don't mind complexity of it.