I found that VSTOR seems to have 4.2V as its max charging value, but is it adjustable and how?
Thanks and appreciate your help.
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I found that VSTOR seems to have 4.2V as its max charging value, but is it adjustable and how?
Thanks and appreciate your help.
So VBAT_OV basically determines the max VSTOR value, also the output at VOR.
I did an experiment, without adding or changing any resistance on the bq25505 module, I supplied total of 5.1V battery at the VBAT_SEC, the VSTOR value is suppose to be about 4.2V by default, but I measured and got the same value as the VBAT_SEC, 5.1V. Is this operation normal as the VBAT_SEC takes over the VSTOR and to the output VOR?
Also, I have a few doubts do you mind answering me on that:
1. If I connect a 5.1V battery at the VBAT_SEC, is the VSTOR which is getting input from VIN_DC able to charge up the battery? (since the voltage is higher on the VBAT_SEC)
I would think that only when VBAT_SEC drops to below VSTOR (VBAT_OV), boost converter is enabled again giving input to VSTOR, and that input will BOTH supply to load VOR and charge up battery at VBAT_SEC at the SAME time, is this true?
2. In the ratings, VIN_DC, VSTOR, VBAT_SEC all have 0.3 to 5.5V maximum ratings. If I want to give a 5.1V output at VOR, I will use 5.1V in VBAT_SEC and set VBAT_OV to 5.1V. Is this the right thing to do?
Thanks! Appreciate your replies.