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USB Hi Power

USB based 3.3v 1-2A power supply. Utilizes a charger detector to raise a signal notifying when high current may be available.

chris-hamiltonChris Hamilton
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Provides up to 2A at 3.3V from compatible USB charger systems. Allows for wearables to be powered by off the shelf (cheap) Power Banks.

Utilizes a highly efficient TPS62067 buck converter and the BQ24392 charge detector. ESD protection provided by TPD4S014. The USB micro-B connector is SMD only for ease of installation during design testing. I would not expect it to be durable and it will be replaced.

This board is part of Fyber Labs Flex Module project.

The current design is a TPS62067 driven from a USB 2.0 micro B connector. USB lines are filtered through a TPD4S014 for ESD and high voltage supression. The TPD4S014 also provides a startup delay to the TPS62067 to minimize inrush current. The data lines are further processed by a BQ24392 which will send a high CHG_DET when greater than 500mA is available on USB.

Provides USB supplied +5V, +3.3V, GND, USB D+/- , ID and the following 3 status signals:
SW_OPEN - Low when the D+/D- lines are connected to a host,
CHG_AL_N - Low when charge detection complete/charging allowed,
CHG_DET - High when a high current charger is detected.

We are no longer developing this board. It is replaced by the USB BiPower Flex Module. It adds a -3.3V output, but is otherwise the same form factor.

  • 1 × DX4R005H91R1500 Connectors and Accessories / Telecom and Datacom (Modular) Connectors
  • 1 × TPD4S014DSQR Semiconductors and Integrated Circuits / Misc. Semiconductors and Integrated Circuits
  • 1 × SN74LVC1G04DRYR Logic ICs / Gates and Inverters
  • 1 × BQ24392RSER Power Management ICs / Power Supply Support
  • 1 × TPS62067DSGT Power Management ICs / Switching Regulators and Controllers

  • End of Project

    Chris Hamilton • 09/26/2014 at 05:45 • 0 comments

    Hi, we are consolidating the effort of the USB based power supplies into the USB BiPower.  We have had better luck developing around the TPS62086 buck converter.  That design is more powerful and has a similar in cost.  Please follow the USB Bi Power project.  At some point, we might revisit a non bi polar design that is a smaller board/less pins based on the TPS62086.

View project log

  • 1
    Step 1

    Detailed discussion of tools and process will be made on the Flex Module project.

  • 2
    Step 2

    Order board from OSHPark and stencil through OSH Stencils.

  • 3
    Step 3

    Order BOM components.

View all 5 instructions

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