APPEB1012 – Solar Cell charging with PMIC
The APPEB1012 is designed to aid the development of energy harvesting applications with a supercapacitor, particularly solar energy harvesting, using a PMIC to achieve a highly efficient, regulated dual-output supply using a supercapacitor as the high-power energy storage element.
A cold-start circuit allows the board to start operation with a discharged supercapacitor with an input voltage as low as 380 mV and input power of just 3 µW. The board incorporates a maximum power point tracking (MPPT) switch mode power management IC (PMIC),
Main Features
- PCB supports entire range of CAP-XX supercapacitors (Less than or equal to 100F)
- 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 Vppt/Voc ratio of 70%, 75%, 85%, 90%
- Vin 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
- Output voltage control configurable via a jumper link:
- PMIC controlled output with user customisable voltage thresholds
- Direct connection between supercapacitor and the output
- Multiple test points
- Test points for input voltage and supercapacitor voltage measurement
- Includes 1Ω resistors for input and output current sensing
Note: The APPEB1012 Evaluation Board is made to order. Please allow 2-3 weeks for delivery. If there is a significant delay shipping your order, CAP-XX will notify you via email or telephone.
Click Here – Solar Cell charging with PMIC Evaluation Board Manual
