Part Number: BQ24640 Hi,
I am a little bit confused with the parameter charge current, which is calculated according to the given formula in the datasheet. I would like to use this IC for charging 2 supercapacitors (45F/5.6V) rated from Visay. I have…
Part Number: BQ24640 Hi BCP,
Please see a question below from a customer. Thanks!
I am finally testing the BQ24640 and have encountered a specification problem: From the datasheet
Feedback regulation voltage (bottom of sheet 5)
Feedback regulation…
Part Number: BQ24640 Other Parts Discussed in Thread: LM5155 Tool/software: WEBENCH® Design Tools Hi,
I used the BQ24640 spreadsheet calculator to to design the supercap charger for 9 Vinput, 7.5V 5A output. But my prototype shuts down at just above 2A…
Part Number: BQ24640 Hi,
I have just read this document http://www.ti.com/lit/ug/tidu594/tidu594.pdf .
In the document, it introduces a block diagram (attached below) to charge the super-cap.
Its says that this kind of charging circuit benefits the cost…
Part Number: BQ24640 Other Parts Discussed in Thread: BQ25570 On the BQ24640 part, what is the lowest operational charge current I can set using iset with the sense resistor?
Can I program it for 100uA charge current?
Douglas
Part Number: BQ24640 When the super capacitor charge is not intermittent, and STAT-turns on / PG-turns on even when charging is not possible.
Figure 11. Typical Application Schematic of Datasheets Changes in the reference circuit Input voltage (Adapter…
Part Number: BQ24640 Other Parts Discussed in Thread: BQ33100 Hi team,
my customer wanted to implement a circuit where they have to charge and monitor a supercap of roughly 5F. So far they tested the EVM of the BQ24640 and the companion BQ33100. They…
Part Number: BQ24640 Other Parts Discussed in Thread: TPS92515 Hi,
Currently, we are looking for a solution for charging super cap(two cells in series, each one is 25F/2.7V and the charging time is 90s). I’m not sure if TPS92515 is effective to charge…