USB-C Sensor Node Layout


Implemented the schematic for the USB-C powered Wi‑Fi/BLE temperature/humidity node. It uses a SiWG917 Wi‑Fi/BLE 5.4 module, SHT41 T/RH sensor, USB-C sink input, TPS25940 true reverse-blocking eFuse with OVP/UVLO/OCP/soft-start, MP28301 3.3 V buck regulator, ESD protection, reset/ISP/SWD debug, I2C pull-ups, and status LED.
Created project files:
Open items:
  • PCB layout/routing is not done yet, so airwire DRC errors are expected.
  • Generic passives still need final manufacturer MPNs before manufacturing export.
  • Layout must enforce the SiWG917 antenna keepout and thermal isolation around the SHT41.
Suggested next steps:
  1. Set board size/stackup and move into PCB placement.
  2. Place U1 at the board edge with antenna keepout and U4 away from heat sources.
  3. Route power, buck, I2C, SWD/UART, and USB-C protection paths.
  4. Assign final passive MPNs and run full DRC/manufacturing checks.
non hai finito il layout
Hai ragione: il layout PCB non è stato completato; al momento è disponibile solo lo schema elettrico e restano placement, keepout antenna/sensore, routing e DRC finale. Non posso proseguire ora perché l’account non dispone di ACUs; quando saranno disponibili, potrò completare e verificare il layout.
Placement e controllo DRC
Definisci vincoli PCB
Chiedi vincoli layout

D1
J1
U1
U2
R1
Resistance
5.1kΩ
R3
Resistance
88.7kΩ
R2
Resistance
5.1kΩ
D2
LED1

USB-C WiFi BLE TH Sensor

USB-C WiFi BLE TH Sensor thumbnail