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LoRaPowerBox

h0lad·LoRaPowerBox·pcb/LoraPowerBox.kicad_pcb

LoRaPowerBox PCB layout, top view — open source board by h0lad
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About the LoRaPowerBox PCB

LoRaPowerBox is an open source PCB design by h0lad, published on GitHub under the CERN-OHL-S-2.0 license. It is a 4-layer board measuring 51.6 × 60.6 mm, with 52 components from 34 distinct parts.

Other key parts include the HT-CT62, TI BQ25628E, TPS631000 and APX803L05. By type, the board carries 15 resistors, 13 capacitors, 12 connectors, 4 ICs, 3 switches and 3 diodes.

It belongs with the power & battery, rf & radio and iot & wireless designs in this gallery.

From the project

The LoRaPowerBox combines the Heltec HT-CT62 module (ESP32C3 + Semtech SX1262) with a TI BQ25628E wide-range charger. Main target is IoT projects that deliver data over LoRa and/or Wifi utilizing solar power.

This PCB integrates a Heltec HT-CT62 (ESP32-C3 + SX1262), a TI BQ25628E wide-range Li-ion charger and a TI TPS631000 buck-boost converter providing a stable 3.3V rail at up to 1.5A. The TI BQ25628E is capable of handling highly dynamic sources like solar cells and wind generators.

- 3.9-18V input range, with survival up to 26 V - Up to 3.2A input current (IBUS) - Up to 2A battery charge current (IBAT) - Up to 3.5A system output current (ISW), limited to 1.5A @ 3.3V by the TPS631000 - Configurable hot/cold charging profile to restrict charging at extreme temperatures - Integrated ADC provides…

LoRaPowerBox, from the project README
From the project README

Main components on the LoRaPowerBox

HT-CT62TI BQ25628ETPS631000APX803L05

LoRaPowerBox bill of materials (BOM)

52 components, 34 distinct parts.

QtyPartRefs
1
HT-CT62
U1
1
TI BQ25628E
U2
1
TPS631000
U3
1
APX803L05
U4
6
Conn_01x04_Pin
J1, J2, J3, J5, J6, J7
1
Conn_01x06_Pin
J4
1
Conn_01x02_Pin
J8
3
Conn_01x02_Pin
J9, J10, J11
1
Conn_01x05_Pin
J12
2
SSSS811101
SW1, SW3
1
TS-1088-AR02016
SW2
1
D
D1
2
LED
D2, D3
2
1uH
L1, L2
2
0.1uF
C1, C8
1
47uF
C2
2
100nF
C3, C13
1
47nF
C4
1
20uF
C5
1
4.7uF
C6
Show 14 more
QtyPartRefs
2
10uF
C7, C9
1
1uF
C10
1
47uF
C11
1
22uF
C12
4
10k
R1, R2, R5, R6
2
R
R3, R4
1
5.23k
R7
1
30.1k
R8
1
1.5k
R9
1
511k
R10
1
91k
R11
1
50
R12
1
100k
R13
2
300
R14, R15

LoRaPowerBox design files

The KiCad project lives in the h0lad/LoRaPowerBox repository on GitHub; these links point at the commit this page was built from.

LoRaPowerBox: common questions

How big is the LoRaPowerBox PCB?

The LoRaPowerBox measures 51.6 × 60.6 mm, has 4 copper layers and is 1.600198 mm thick.

How many components are on the LoRaPowerBox?

52 components, from 34 distinct parts. The full bill of materials is listed on this page.

Where can I download the LoRaPowerBox design files?

From the h0lad/LoRaPowerBox repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the LoRaPowerBox design in my own project?

Yes, under the terms of its CERN-OHL-S-2.0 license, which h0lad chose for the repository.

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