e-peas AEM00940 Ambient Energy Manager User Guide
- June 3, 2024
- e-peas
Table of Contents
AEM00940 Ambient Energy Manager
AEM00940
Quick Start Guide EVK
FEATURES
Connectors
- 1 screw connector for the source (SRC) + 2 screw connectors for AC input signal (LF/MF)
- 1 screw connector + 1 JST connector for the Storage Element (BATT)
- 1 screw connector for Primary Battery (PRIM)
- 1 screw connector for HVOUT LDO output (80mA @ 1.8 – 4.2 V)
- 1 screw connector for LVOUT LDO output (20mA @ 1.2 or 1.8 V)
Configuration
- 2 jumpers SRC_LVL_RANGE[1:0] to define the GAIN ratio linked to the harvester technology …
- 3 Jumpers CFG[2:0] to define the storage element protection levels
- 6 resistors foot print 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
- 2 resistors to define the harvesting level
- 1 potentiometer to define the harvesting voltage
- 1 jumper to set the dual cell supercapacitor BAL feature
Size
- 79mm x 49mm
- 4 x M2.5 Mounting holes
SUPPORT PCB
BOM around the AEM00940
Footprint & Symbol: Available on the web product page
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STEP 1: AEM00940 Configuration
• Source range: SRC_LVL_RANGE[1:0]
• Storage Element voltages protection: CFG[2] – CFG[1] – CFG[0]
• 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
• R7 = ( *RP) 2.2 V
• R9 = RP – R7
• LDOs Outputs Voltages: ENHV (HVOUT) – ENLV (LVOUT)
• Source level: Use the potentiometer or resistors R9 and R10 in combination of the source range functionality to define the harvesting voltage.
• 100 kΩ ≤ RS ≤ 500 kΩ
• R10 = ( * RS) / 2.2 V
• R9 = RS – R10
STEP 2: Connect the Storage Element (and the Primary Battery)
STEP 3: Connect the Load(s) to HVOUT / LVOUT
STEP 4: Connect the Harvester
• Internal Boost efficiency Vs. input voltage:
STEP 5: Check the Status
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