Power-path controller, 66.5 × 43 mm, under development. USB Power Delivery 3.1 up to 140 W, an STM32 that stays powered, and an I2C link for an external BMS. Output on a push-in terminal. Not for sale.
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Under development. Figures follow the current product sheet and can still change.
The NecoPower-PD140i is a power-path board, 66.5 mm by 43 mm. It sits between a USB-PD port and the rest of the product and holds the output up when the input drops. One bidirectional USB-C port, USB Power Delivery 3.1, up to 140 W either way. Charge and discharge limits can be set. The photo is marked PD 3.1, 28 V / 5 A.
The STM32 on the board stays powered. Data lines are I2C and UART. There is no pack BMS on this PCB. An external BMS connects over I2C. With that link the controller can read cell voltage and temperature and use the pack protections: undervoltage, overvoltage, overcurrent, short circuit, low temperature, high temperature, and the charge counter. The power output is a push-in terminal block. The board has its own overvoltage protection. Cell chemistry and cell count come from the external BMS. The sheet does not fix a cell count.
Applications
Battery backup in a product
USB-PD power path with a terminal-block output
Specifications
Status: Under development, not for sale
Product sheet: PF2526-1, November 2026, revision V1
Function: Power-path controller
USB Power Delivery: 3.1, one bidirectional USB-C port, up to 140 W
Charge: Up to 140 W
Discharge: Up to 140 W
Marking on the photo: PD 3.1, 28 V / 5 A
Controller: STM32, stays powered
BMS: External, over I2C. Not on this PCB.
Data: I2C, UART
Power output: Push-in terminal block
Protections: Overvoltage on this board. Pack protections come from the external BMS.
Size: 66.5 × 43 mm
Temperature grade: 0 to 70 °C, or -40 to 85 °C, depending on the build
Origin: Made in the Czech Republic, 2026
NECOSIN Systems s.r.o. · www.necosin.com · info@necosin.com
NecoPower-PD140i
Data sheet
Status
Under development, not for sale
Product sheet
PF2526-1, November 2026, revision V1
Function
Power-path controller
USB Power Delivery
3.1, one bidirectional USB-C port, up to 140 W
Charge
Up to 140 W
Discharge
Up to 140 W
Controller
STM32, stays powered
Protections
Overvoltage on this board. Pack protections come from the external BMS.
Data
I2C, UART
Size
66.5 × 43 mm
Temperature grade
0 to 70 °C, or -40 to 85 °C, depending on the build
Catalog entry only. This item is not for sale.
The NecoPower-PD30M is a controller for a power bank, or for a USB-PD supply inside another product. It has one bidirectional USB-C port, USB Power Delivery 3.1. Charge is set up to 100 W. Discharge...
Power-path controller, 66.5 × 43 mm, under development. USB Power Delivery 3.1 up to 140 W, an STM32 that stays powered, and an I2C link for an external BMS. Output on a push-in terminal. Not for sale.
