Testing the energy harvesting circuit TI BQ25570 without solar panel

This video is a tutorial on how I test the Texas Instruments BQ25570 energy harvesting chip. It is based on the board you can easily find online and order. My goal was to find the optimal input current and voltage to feed in the highest power into the circuit. In other words, my goal is to find the optimal solar panel. I test it with a programmable power supply instead of a solar panel. The battery in the test circuit is a small Lithium-Ion Polymer 110 mA rechargeable battery. I explain all my steps in the video. For the full article, to entirely understand, as well as the circuit schematics, please visit my site with the article: www.lab4iot.co...

[@RGPinger]

Can you confirm if BQ25570 starts to run at 600 mV or at 330 mV?

[@kafr8413]

How do you set the output voltage? What pins give what output voltage? I read the TI schematic, but did not see it mentioned...though I am sure it was. Looking for anything over 2 volts out, with converter enabled.

[@keithwalter7136]

Is this available commercially? And where can we acquire this one?

[@refikhadzialic6229]

Do you mean the BQ25570 on the PCB? If so, yes. AliExpress or Ebay if you want the same board as I have had used in the clip.

[@olavobarreto]

Your site is down, please fix that issue

[@muhammadamjadzikrymohdsi-pu1yw]

Hello i am newbie, i bought the chip solder all part my input is 1.5v but there's no output can you help identify my problem it's for school project hoping you can give some guidance 🙇🙇

[@YongHuiLiew]

According to the datasheet, I believe the input current is limited to 100mA, and VIN must be < VSTOR < VBAT_OV.
If VIN exceeds the specification, it will be "pulled to ground through a small resistance to stop further charging".
Thanks for the practical demonstration.
Also, your website is down when I tried to access it. Appreciate if u could bring it up. It'll be of great help to many. Thanks!

[@RGPinger]

so if I put there 30 volts it will not kill it?

[@animech007]

Can I use it with a source having current input in the range of 10 microamp and open circuit voltage around 400 mV? What would be the header pin connections in that case?

[@refikhadzialic6229]

I am not sure, according to the data sheet it should be possible, just won't be the most efficient charging. Check the figures in the data sheet!

[@martinbesse862]

What the voltage you inject inside the converter ?(What's the Input Voltage Range ?)
Instead of using it for solar panel, do you think it allows to use with a thermoelectric generator?

[@refikhadzialic6229]

I believe you can find the voltages in the data sheet for that specific IC.