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CN3058 LiFePO4 Power Board LS 5V
10 months agoOpen source license: CC-BY-SA 3.0
Description
Single cell LiFePO4 charger (CN3058E), protector (HY2112) and 5V booster (MT3608) board with load sharing power path management.
The board was developed for 5V projects that are operated both by battery and external power. The load sharing system interrupts the connection between the battery and the load when an external power supply is connected. In this case, the project is powered by the external power supply while the battery is being charged. This protects the battery and increases its lifespan. The maximum output current is 1A.
BOM
| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | Connector | VIN,VOUT,BAT1 | HDR-1X2/2.54 | 3 |
| 2 | HY2112 | U2 | SOT-23-6 | 1 |
| 3 | FULL | LED2 | LED0603 | 1 |
| 4 | 22uH | L1 | IND-SMD_L7.3-W6.8 | 1 |
| 5 | POWER OUT | USB2 | USB-2.0-A-F-90-JCJ-H9.36 | 1 |
| 6 | DMP1045U-7 | Q2 | SOT-23-3_L2.9-W1.3-P1.90-LS2.4-BR | 1 |
| 7 | 15k | R6 | 0603 | 1 |
| 8 | 2k | R4,R7 | 0603 | 2 |
| 9 | 1k2 | R2 | 0603 | 1 |
| 10 | 1k | R1 | 0603 | 1 |
| 11 | 100R | R3 | 0603 | 1 |
| 12 | CN3058E | U1 | SOP-8_EP_150MIL | 1 |
| 13 | POWER IN | USB1 | USB PWR CONNECTOR | 1 |
| 14 | MT3608 | U3 | SOT-23-6 | 1 |
| 15 | Slide Switch | PWR | SLIDE SWITCH DPDT 1P2T | 1 |
| 16 | 10k | R5 | 0603 | 1 |
| 17 | 100n | C3 | 0603 | 1 |
| 18 | 10u | C2 | 0603 | 1 |
| 19 | 1u | C1 | 0603 | 1 |
| 20 | CHARGE | LED1 | LED0603 | 1 |
| 21 | 22u | C4,C5 | 1206 | 2 |
| 22 | SS34 | D2,D1 | DIODE-SMA(DO-214AC) | 2 |
| 23 | FS8205 | Q1 | SOT-23-6 | 1 |
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Project Members
1
Stefan Wagner
@stephen.mcmxiv Thank you. I'm not sure if this device can really act as a UPS, but you can set the output voltage (up to 28V) by selecting proper R6 and R7.
stephen.mcmxiv
Nifty project. If only the output is 12V, I think I can make a router UPS out of it. Good work, Sir!