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Hi Kaveh,
The BQ25570 uses the same boost topology as the BQ25505 and BQ25504 which requires that VBAT_OV be greater than VIN_OC. It just integrates a buck for load rail regulation.
Best Regards,
Juan Ospina
Part Number: BQ25505 Tool/software: Hi there
I'm using the BQ25505 for a small IoT-Device with a rechargeable battery and I'm having the problem that after a short voltage drop at VBAT_SEC from a battery disconnection (some few milliseconds), the…
Part Number: BQ25505 Other Parts Discussed in Thread: BQ25570 Tool/software: Hi Sir,
My customer is designing the BQ25505 and using a photovoltaic (solar) to the DC source.
Could you please review the schematics and reply the below questions?
Design…
Part Number: BQ25505 Other Parts Discussed in Thread: BQ25504 Tool/software: Hi,
I am looking for a PMIC similar to BQ25505 that can be used for power harvesting from a solar cell and storing energy into a battery. I need the device to have a small package…
Part Number: BQ25505 Other Parts Discussed in Thread: BQ25570 , , BQ25504 Hi,
my end goal is building a USB C charger (for an eInk device) that is powered by a solar cell (ca 300 cm^2) in indoor lighting conditions.
The ouput power of the solar cell is…
Not considering this condition 1. Solar panel input voltage: 4.5V or above (standard 5V) BQ25570RGRT, BQ25505RGRT, BQ24650RVAR, TI-BQ25504, TI-BQ25505 According to my request, which chip would be the most suitable and cost effective option to choose?I…
Part Number: BQ25505 Hi,
I am using BQ25505RGRT in my design. What will happen if a battery with reverse polarity is connected to this chip? I am not going to use series diode with my battery for reverse polarity protection, because of the voltage drop…
Part Number: BQ25505 Hi
I have a query need your help.
VBAT_SEC is connected to the battery 3.8V. Initially, there is no load and the voltage can be output normally, and then the voltage can be output normally when connected to the load. Initially, there…
Part Number: BQ25505 Hi Team,
To my understanding, the first stage of boost is to achieve MPPT, then Vin of boost is regulated, right? Then Vin sense accuracy is important, what's the accuracy of Vin sense and is Vin sensed by Vin_DC pin? Thanks.…
Part Number: BQ25505 Other Parts Discussed in Thread: BQ25570 , BQ25504 , Hello. The BQ25570 circuit I asked you about earlier works well because the problem has been solved.
When applying mass production products, the circuit is changed, so the output of…
