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PD100W bidirectional fast charging pad

Overview

This mini-sized board supports multiple protocols
and is ideal for DIY projects.
It features a rich array of output ports: two USB-A, one Type-C, and one micro-USB.
For high-power applications, a cooling system is required.

The NTC thermistor was placed next to the MCU during layout, necessitating a cooling solution.

The board includes DIP switches for battery capacity adjustment, battery string count, and battery charging voltage.

No resoldering of corresponding resistor values is necessary; simply toggle the switches to the appropriate positions for easy adjustment.

The board's compact design allows for the placement of larger batteries, enhancing DIY convenience.
A flashlight function has been added; a 2-second press turns it on, and another 2-second press turns it off.
Charging current, voltage, and power display functions will be added later; this
is still under development.

Design Files

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Update:2026-03-26 15:36:21

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