power
Power tree. power_supply.kicad_sch is the top level and instantiates the
other sheets. The Key parts and Ports columns are generated by
docs/gen_hardware_docs.py; edit only the Function text.
| Sheet | Function | Key parts | Ports |
|---|---|---|---|
power_supply.kicad_sch |
Ties the sources together | BAT54C,215 | BAT_CHARGE, GND, IS_CHARGING, USB_DN, USB_DP, Vcc |
usb_c.kicad_sch |
USB-C sink with CC pulldowns | 5.1 kΩ x2, TYPE-C_16PIN_2MD__073_ | 5V, GND, USB_DN, USB_DP |
battery_charging.kicad_sch |
Li-ion charger with NTC temperature limits | ${SIM.PARAMS}, 1 MΩ x2, 10 µF x2, 24 kΩ, 3 kΩ, 33 kΩ, TP4056-42-ESOP8 | 5V, BAT+, BAT-, BAT_CHARGE, GND, IS_CHARGING |
battery_18650.kicad_sch |
Cell holder and single-cell protection | 0.1 µF, 1 kΩ, 100 Ω, DW01A_C351410, FS8205A_C908265, MY-18650-02 | Batt+, Batt- |
3_3V_booster.kicad_sch |
Buck-boost converter to 3.3 V | 0.1 µF, 10 µF x2, 100 Ω, 2.2 µH, 22 µF, TPS63001DRCR | 3.3V, GND, Vin |
- The BAT54C diode-ORs the charger output and the battery into the booster input.
BAT_CHARGEisBatt+divided by two 1 M resistors.IS_CHARGINGis the TP4056 status pin.