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    • openhardware.io

      💬 Super-capacitor-power-supply-for-wireless-sensors-w-charger
      OpenHardware.io • power supply boost converter supercap • • openhardware.io  

      5
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      5
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      1596
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      Noki

      @ceech I really like this design, however I think it has a problem: According to the datasheet the TPS610986DSET has no feature to disconnect the load at low battery voltages. I think the result will be that e.g. a ESP32 or other power hungry chips will not power up properly. The TPS63031 might therefore be a better fit. btw.: Do you still sell assembled versions of this design? Would you be willing to create a new version with the TPS63031 and probably also with 10 or 20F capacitors or an board to solder your own capacitors. Best regards Tobias
    • openhardware.io

      💬 3.3v Boost Converter with Pass-Through
      OpenHardware.io • converter step-up dc-dc boost converter voltage 3.3v booster mote pass-through ltc3525d • • openhardware.io  

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      NeverDie

      @rozpruwacz said in 3.3v Boost Converter with Pass-Through: Hi, I just came across this project and I like the idea of pass trough very much I have a question, why did You use the LTC3525D part instead of MCP1640C which You already used in other boost converter projects ? MCP1640C is 5 times cheaper than LTC3525D and they are quite similar. I just now revised the board to expose the Enable pin, so now you can do a pass-through if you wish. I also made it more compact and gave it a ground-plane on the back. https://www.openhardware.io/view/279 Enjoy!
    • openhardware.io

      💬 Solar Energy Harvester
      OpenHardware.io • converter step-up boost boost converter charger solar mppt booster energy harvesting ltc3105 mppc boosting charging • • openhardware.io  

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      Mar

      Right you are. Live and learn (even at 81), and I even learned a new word -'vias.' Thanks.
    • openhardware.io

      💬 Adjustable Boost Converter with Pass-Through
      OpenHardware.io • boost step-up boost converter voltage mcp1640 • • openhardware.io  

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      32
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      7918
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      NeverDie

      @alexsh1 If the pinout is the same, then the PCB should work.
    • openhardware.io

      💬 Inexpensive 3.3V Boost Converter
      OpenHardware.io • converter step-up boost boost converter dc-dc voltage 3.3v dc-to-dc aat1275-3.3 aat1275 • • openhardware.io  

      12
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      4197
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      tonnerre33

      Thanks you a lot for your work