E-peas AEM30940 User manual

AEM30940 RF 868 MHz
Quick Start Guide EVK
www.e-peas.com © 2020 e-peas S.A. V2.1
FEATURES
Connectors
•1 SMA connectorforinput powerbelow -10dBm[LOW]
•1 SMA connectorforinputpowerabove -10dBm[HIGH]
•1 screw connector + 1 JST connectorforthe Storage Element
•1 screw connectorfor Primary Battery
•1 screw connector forHVOUT LDO output(80mA @ 1.8 –4.2 V)
•1 screw connectorforLVOU LDO output (20mA @ 1.2 or 1.8 V)
Configuration
•2 jumpers SELMMP[x] to define the MPPTratiolinkedto the harvestertechnology
•3 Jumpers CFG[x] to definethe storage element protection levels
•6 resistors footprint related tothe custom mode (CFG[2:0]=000)
•2 jumpers toenable/disable the internal LDOs
•2 jumpers todefine the primary battery minimum level
•1 jumperto setthe dual cell supercapacitorBALfeature
•1 resistors footprint touse the ZMPP feature (constant impedance)
Size
•79mm x49mm
•4 x M2.5 Mountingholes
SUPPORT PCB
BOM around the AEM30940
Matching network and RF rectifier schematic under NDA signature
Footprint & Symbol: Available on the web product page
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STEP 1: AEM30940 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 (2.2V by default with the jumper and 0R R7 mounted)
•100 kΩ ≤ RP ≤500 kΩ
•R7 = (𝑉𝑝𝑟𝑖𝑚_𝑚𝑖𝑛
4* RP) / 2.2 V
•R9 = RP –R7
•ZMPP resistor footprint
•LDOs Outputs Voltages: ENHV (HVOUT) –ENLV (LVOUT)
•MATCHING NEWORK + RF RECTIFIER: one matching for LOW input power (< -10 dBm)
and anothermatching forHIGH inputpower(<+20 dBm)
STEP 2: Connect the Storage Element (and the Primary Battery)
STEP 3: Connect the Load(s) to HVOUT / LVOUT
STEP 4: Connect the antenna to the SMA connector
•Overall efficiency from the antenna tothe storage element:
STEP 5: Check the Status
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