Jasper SikkenI saw this article on Hackaday.com about the this BQ25504 Ultra low power Solar LiPo Charger sold by Kris Winer on Tindie. I wish that article was about my TSEM. Here I compare the differences with my TSEM. The BQ25504 is very similar to AEM10941 but it does not have two integrated outputs (3.3V and 1.8V). The BQ25504 Solar Cell LiPo Charger board does not have on board solar cells, it cannot be surface mount soldered, it requires more external passives, and the mppt Voc ratio cannot be changed without changing the passive components.
Difference with another ultra low power harvesting board
A project log for Tiny Solar Energy Module (TSEM)
A 1 square inch PCB module with 2 tiny solar cells, a highly efficient Li-Ion charger and with 3.3V and 1.8V output
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In addition the AEM10941 has two integrated regulators and a balance feature for dual-cell supercapacitor.
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