Part Number: BQ24640 Hi
I use BQ24640 to charge a super capacitor bank. This is the circuit diagram of the BQ24640 part.
VCC_BATTERY is 24V. After connecting the super capacitor, it can be charged. First CC and then CV, but the charging current cannot…
Part Number: BQ24640 Hi
I wish to use bq24640 to charge a supercapacitor bank of 4* (2.7V 50F) by a generator with an output range of 9V to 42V.
When the supercapacitors are fully charged there is a potential danger of overvoltage. In the typical application…
Part Number: BQ24640 Hi team,
Is there any max/min value for resistor-divider, R1 and R2? (R2 is connected from VFB to the output, and R1 is connected from VFB to GND.)
Typical application on the datasheet has 105kohm and 300kohm. Is it OK to use 10ohm…
Part Number: BQ24640 Hi Team,
Customer is looking for a super capacitor charger solution, the super-capacitor is 12V and charging current should maintain 5.5A lasting 10s. Do u think BQ24640 is best solution for this customer's demand? If not, pls recommend…
Part Number: BQ24640 Hi team,
My customer is considering using BQ24640, and I’d like to ask your help.
For TS pin, which temperature is it monitoring? The datasheet states BQ24640 monitors load temperature by measuring the voltage between TS and…
Part Number: BQ24640 Other Parts Discussed in Thread: BQ24610 Hi Team,
Customer wants to use BQ24640 in their new Ethernet switch project to charge Lead-acid battery.
Can BQ24640 charge lead-acid battery?
If not, I will recommend him to use BQ24610…
Part Number: BQ24640 Hi team,
Could you share the leakage current from TS-pin?
The background of this question is that when TS-pin function is not needed, same value of RT1 and RT2 required.
The appropriate range for RT1 and RT2 would be to set the…
Part Number: BQ24640 Hi
Use bq24640 to charge the super capacitor, set the voltage to 5.4v, charging current is 8A.
The problem is the output voltage only reach about 1.7v after the CE pin is pulled high when power on, and it is no-load state at this…
Part Number: BQ24640 I designed a super capacitor charger based on BQ24640. The charger has adjustable charging voltage and current. The schematic diagram is basically the same as that provided by the official. It is powered by a DC stabilized power supply…
Part Number: BQ24640 Hi Team,
My customer is inquiring a supercap charger solution, they need:
1. Current limit function
2. Single way
3. 20Vin, charge a super-capacitor 1.2F/5.5V, and nano system consumption (<5W)
when adapter removed they use sup…
