Energy harvesting from single cell solar panel for li-ion battery reference design


Design files


The TIDA-050039 reference design demonstrates how to use a fully-integrated synchronous boost converter TPS61089 in combination with a single-cell solar panel to charge a li-ion battery. An additional maximum power-point (MPP) sampling network is implemented to dynamically control the input voltage to optimize the transfer of power from solar panel.

  • Low working input voltage range: 0.4 V to 0.6 V
  • Fixed Maximum Power Point (MPP)
  • Maximum charging current up to 200 mA
  • High efficiency
  • Simple and flexible
Output voltage options TIDA-050039.1
Vin (Min) (V) .4
Vin (Max) (V) .6
Vout (Nom) (V) 3.8
Iout (Max) (A) .2
Output Power (W) .76
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Boost- CCM
??image.gallery.download_en_US?? View video with transcript Video

A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.


Reference design overview and verified performance test data

TIDM400.PDF (139 K)

Detailed schematic diagram for design layout and components

TIDM401.PDF (58 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDM402.PDF (114 K)

Detailed overview of design layout for component placement

TIDM404.ZIP (1577 K)

Files used for 3D models or 2D drawings of IC components

TIDCFQ7.ZIP (1174 K)

Design file that contains information on physical board layer of design PCB

TIDM403.PDF (522 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Boost converters (integrated switch)

TPS6108912.6-V, 7-A Fully-Integrated Synchronous Boost Converters in 2.0-mm x 2.5-mm VQFN Package

Data sheet: PDF | HTML

TLV7042Dual nanopower comparator with open-drain output

Data sheet: PDF | HTML
General-purpose op amps

LPV321-NSingle, 5-V, 152-kHz, low quiescent current (9-μA), RRO operational amplifier

Data sheet: PDF | HTML
P-channel MOSFETs

CSD25480F3-20-V, P channel NexFET™ power MOSFET, single LGA 0.6 mm x 0.7 mm, 159 mOhm, gate ESD protection

Data sheet: PDF | HTML
Series voltage references

REF33121.25-V, 30-ppm/°C drift, 3.9-µA, 3-pin SOT-23, 3-pin SC70, 8-pin UQFN voltage reference

Data sheet: PDF | HTML

Technical documentation

= Top documentation selected by TI
No results found. Please clear your search and try again.
View all 1
Type Title Date
* Design guide Energy Harvesting From Single Cell Solar Panel for Li-Ion Battery Ref Design Dec. 20, 2019

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​