e-peas AEM30940 RF 2.45 GHz User Guide
- June 6, 2024
- e-peas
Table of Contents
e-peas AEM30940 RF 2.45 GHz
FEATURES
Connectors
- 1 SMA connector for input power below -10dBm [LOW]
- 1 SMA connector for input power above -10dBm [HIGH]
- 1 screw connector + 1 JST connector for the Storage Element
- 1 screw connector for Primary Battery
- 1 screw connector for HVOUT LDO output (80mA @ 1.8 – 4.2 V)
- 1 screw connector for LVOU LDO output (20mA @ 1.2 or 1.8 V)
Configuration
- 2 jumpers SELMMP[x] to define the MPPT ratio linked to the harvester technology
- 3 Jumpers CFG[x] to define the storage element protection levels
- 6 resistors footprint related to the custom mode (CFG[2:0]=000)
- 2 jumpers to enable/disable the internal LDOs
- 2 jumpers to define the primary battery minimum level
- 1 jumper to set the dual cell supercapacitor BAL feature
- 1 resistors footprint to use the ZMPP feature (constant impedance)
Size
- 79mm x 49mm
- 4 x M2.5 Mounting holes
SUPPORT PCB
BOM around the AEM30940
Matching network and RF rectifier schematic under NDA signature Footprint & Symbol: Available on the web product page
Configuration
- MPPT ratio: SELMPP0 – SELMPP1
- Storage Element voltages protection: CFG2 – CFG1 – CFG0
- BAL option: Select “ToCn” for dual-cells supercapcacitor and “GND” for any other storage
- PRIM option: Connect both jumpers “NoPRIM” or remove them if a primary battery is connected. Define the lower limit voltage on the primary battery using R7 and R8:
- 100 kΩ ≤ RP ≤ 500 kΩ
- RP) / 2.2 V
- R9 = RP – R7
- ZMPP resistor footprint
- LDOs Outputs Voltages: ENHV (HVOUT) – ENLV (LVOUT)
- MATCHING NETWORK + RF RECTIFIER: one matching for LOW input power (< -10 dBm) and another matching for HIGH input power (< +20 dBm)
- Connect the Storage Element (and the Primary Battery)
- Connect the Load(s) to HVOUT / LVOUT
- Connect the antenna to the SMA connector
- Overall efficiency from the antenna to the storage element:
- Check the Status
References
Read User Manual Online (PDF format)
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