E-peas AEM10900-QFN 28 User manual

AEM10900 –QFN 28
Quick Start Guide EVK
FEATURES
Connectors
•1 screw connector for the photovoltaic cell.
•1 screw connector + 1 JST connector for the storage element.
•1 screw connector for thermal monitoring.
•1 screw connector for RZMPP.
Configuration
•3 R_MPP[x] headers to define the MPP ratio linked to the harvester technology.
•2 T_MPP[x] headers to define the MPP timing.
•3 STO_CFG[x] headers to define the storage element protection levels.
•1 TH_MON header to enable/disable the thermal monitoring.
•6-pin header for the I²C communication.
•2 headers for the KEEP_ALIVE and DIS_STO_CH features.
Reset
•1 reset button (press for 5 seconds minimum to reset the AEM).
Size
•79mm x 49mm.
•4 x M2.5 mounting holes.
SUPPORT PCB
BOM around the AEM10900
Footprint & Symbol: information available on the datasheet.
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STEP 1: AEM10900 QFN28 configuration
•MPP timing : T_MPP[1:0] (seen as HIGH if left floating)
1. For I²C configuration, T_MPP[2:0] value is set thanks to the MPPTCFG[6:4] register (see datasheet).
2. Only T_MPP[1:0] settings are available by GPIO configuration (T_MPP[2] = H in that case).
•MPP ratio: R_MPP[2:0] (seen as HIGH if left floating)
1. For I²C configuration, R_MPP[3:0] value is set thanks to the MPPTCFG[3:0] register (see datasheet).
2. Only R_MPP[2:0] settings are available by GPIO configuration (R_MPP[3] = L in that case).
•Storage element threshold voltages: STO_CFG[2:0] (seen as HIGH if left floating)
•Thermal monitoring:
Enable thermal monitoring by placing a jumper on the dedicated header to
connect TH_MON to THERM.
Disable thermal monitoring by placing a jumper on the dedicated header to
connect TH_MON to VINT.
•Configuration mode:
•DIS_STO_CH : Connect to L to enable the charge of the storage element,
connect to H to disable it (seen as LOW if left floating).
•KEEP_ALIVE : Connect to H to enable the feature, connect to L to disable the
feature (seen as HIGH if left floating).
•I²C communication:
All the AEM configurations, as well as various information are available
through I²C communication. See the AEM00900 datasheet for more details.
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STEP 2: Connect a storage element with a voltage higher than 2.8 V
STEP 3: Connect a photovoltaic single cell
•Internal boost efficiency vs. input voltage (LDCDC = 6.8 µH):
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