Search tips
Showing 359 results View by: Thread Post Sort by
    Answered

  • RE: BQ25505: Using BQ25505 as a power converter with variable output voltage

    Resolved
    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

  • RE: BQ25505: review schematics and ask the application questions

    Hello, It all depends on how low your battery voltage on VBAT_SEC is. If it is above 3V, your VSTOR will be above 3V. Then you could use an LDO. There is a BQ25570 that has a buck output rail, but the maximum voltage it can have is limited by VSTOR. …
    • Answered

  • BQ25505: Power harvesting chip with small package size

    Resolved
    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…
    • Resolved

  • RE: BQ25505: The selection issue of chips

    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…

  • BQ25505: Energy harvester with small indoor solar cell for USB C charging (BQ25504, BQ25505, BQ25570)

    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…
    • Answered

  • BQ25505: BQ25505 with reverse polarity battery connected

    Resolved
    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…
    • Resolved

  • BQ25505: BQ25505 VSTOR cannot output voltage to the load

    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…
    • Answered

  • BQ25505: Vin detect accuracy

    Resolved
    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.…
    • Resolved
    • Answered

  • BQ25505: Inquire about BQ25505 or BQ25504 differences and design

    Resolved
    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…
    • Resolved
    • Answered

  • BQ25505: BQ25505 VDC_IN voltage level

    Resolved
    Part Number: BQ25505 I have a solar cell with VOC = 3V (@ sunlight) approximately when not connected to BQ25505. I have connected my solar cell, battery and other components to BQ25505 chip according to the datasheet. When my solar cell is connected to…
    • Resolved

Didn't find what you are looking for? Post a new question.