User manual for APPEB1012 Revision 1.2, Oct 2019
Solar Energy Harvesting Supercapacitor Evaluation Board using a
PMIC with MPPT
© CAP-XX Pty Limited 2019 | Tel +61 2 9420 0690 | www.cap-xx.com
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User Manual for APPEB1012 Revision 1.2, Oct 2019
Solar Energy Harvesting Supercapacitor
Evaluation Board using a PMIC with
MPPT
Author: Henry Huang
Features
PCB supports all CAP-XX supercapacitors
•
Supports all CAP-XX prismatic supercapacitor footprints
•
Supports all CAP-XX cylindrical supercapacitor
products
•
Supports both single and dual cell devices with
integrated active cell balancing
Ultra-low power boost regulator
e-peas AEM10941 with:
•
Open-circuit voltage sensing for MPPT every 5s
•
Configurable MPPT with 2-pin programming
•
Selectable V
ppt
/V
oc
ratio of 70%, 75%, 85%, 90%
•
V
in
operation from 50mV to 4.5V
Configurable cell voltage control
•
Charge voltage regulation configurable via headers
•
Eight inbuilt operation modes including user customisable mode for selectable
supercapacitor voltage
Integrated dual output LDO regulators
•
Low voltage LDO of 1.2 / 1.8 V with up to 20 mA load current
•
High voltage LDO of 1.8 – 4.2 V up to 80 mA load current with 300 mV drop out
•
Jumper link selectable
Configurable output control
•
PMIC controlled output with user customisable voltage thresholds, or
•
Direct connection between supercapacitor and the output
•
Jumper link selectable
Low quiescent current
•
Entire circuit draws on average of 5
µ
A
•
Great for low power energy harvesting application
