Part Number: BQ24640 Hello, I am currently using BQ24640, using the recommended schematic diagram. The circuit is working normally.
As expected: charging voltage is set to about 11.4V.Charging current around 350mA, 12V/30F plug-in capacity, charging time…
Part Number: BQ24640 When the voltage of the ultracapacitor is less than 2.1V, the output current is only 25mA. Is there any solution to make the capacitor charge according to the set current even when the voltage is less than 2.1V
Part Number: BQ24640 Hi TI,
I have been trying to build a basic BQ24640 charger for a single 2.7V 330F supercap. I am trying to reach the advertised 10A charging current. My circuit replicates the circuit from the eval board https://www.ti.com/tool/BQ…
Part Number: BQ24640 Other Parts Discussed in Thread: BQ24610 , BQ24600 Does the bq24640 also support Li-Ion Battery? If the bq24640 also supports Li-Ion Battery, how to detect the Termination?
Best regards,
Kagawa
Part Number: BQ24640 Customer is looking for solution on backup power module in motor application.
The backup power rail is 24V which is generated from AC/DC aux. power. When AC/DC power is failure in motor spin operation with certain events, the motor…
Part Number: BQ24640 Other Parts Discussed in Thread: CSD17573Q5B , LM5109B About BQ24640 My customers have the following questions? 1. Can the Sense resistor be changed to 4m ohms to become a 25A fast charge? 2. Can I push two parallel CSD17573Q5B MOS? …
Part Number: BQ24640
HI,
Could you kindly review the charging waveform internally ?
If yes, I would highly appreciate if let me share the waveform and schematic internally.
Thank you and best regards,
Part Number: BQ24640
Hi,
Please let me double check on the voltage feedback line.
bq24640 datasheet shows the voltage feedback line is between inductor and output capacitor as below.
Is the schematic correct ?
Thank you and best regards,
Michi…
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.
It says that this kind of charging circuit benefits the cost…