• Getting somewhere, 80% efficiency =)

    Victor Vikström • 02/11/2015 at 22:27 • 0 comments

    I've been having trouble getting by "big-ass" mosfet, from an old class D amplifier project I'd been working on, working with the 3.3V output from the teensy (gate charge, threshold voltage etc.).
    Eventually I managed to put together a circuit with a 3.3V to 5V level-shifter + totem-pole-driver to drive the mosfet. This mosfet will not be used in the final design but I will use it for a proof-of-concept breadboard circuit .
    According to my first simulations I am able to reach around 80% efficiency, which I find fantastic. It's not too close to the commercial ICs but hey, it's 80% efficiency with only a switch, inductor, diode and cap.

  • New layout thoughts

    Victor Vikström • 02/02/2015 at 20:54 • 0 comments

    I've been thinking about the layout and I think I'm going to take a different route than I first planned. This will be the new layout for now, until I realise that there is something wrong with it.

  • The beginning

    Victor Vikström • 01/30/2015 at 00:37 • 0 comments

    After realising the big issue with getting god efficiency when designing your own SMPS I've been looking for controllers and converters to help me out. The result so far has been that there is none that is available to me and fits my needs so I'll have to turn down my current specs a bit, to say around 100mA for the two variable supplies, and do it myself.

    I think I'll upload the .asc files from ltspice when I get a working circuit.

  • Just starting

    Victor Vikström • 01/20/2015 at 23:39 • 0 comments

    Info, code, schematics and so on will be published as soon as I have something to show =)