BQ33100: Question on BQ33100EVM and SMBUS - Does it support 3kF supercaps?

Gijoo Kim

Part Number: BQ33100
Other Parts Discussed in Thread: BQ24640, , EV2400

Hi,

I have an application of Supercapacitor power bank using 5 supercapacitors value of 3kF in series.

I'm planning to use components BQ33100 and BQ24640 for my charger and balancer.

I have two questions on them:

1) Can those ICs support high-value supercaps of 3kF?

2) BQ33100 is recommended to work among SMBUS EV2300 in order to view the data and status of balancer.

By the way, does I2R (I square R) from BQ33100 gives the same data that EV2300 do? If not, exactly what kind of data can it give?

Thank you

0 Kang Kang over 5 years ago

Hello Gijoo,

1. Can you share the super cap DS?

2. EV2400 will work with bq33100.

0 Gijoo Kim over 5 years ago in reply to Kang Kang

1) Sure, this is my datasheet for supercap

Packaging	Bulk /Retail
Part Status	Active
Capacitance	3000F
Tolerance	-
Voltage - Rated	2.7V
ESR (Equivalent Series Resistance)	0.29mOhm
Lifetime @ Temp.	1500 Hrs @ 65°C
Termination	Same as photos Terminals
Mounting Type	Chassis, Stud Mount
Package / Case	Axial, Can - same as photo Terminals
Lead Spacing	-
Size / Dimension	2.390" Dia (60.70mm)
Height - Seated (Max)	5.445" (138.30mm)
Operating Temperature	-40°C ~ 65°C

2) May I ask a further question about my BQ33100? What value can I2C port from BQ33100 can return?

Thank you

0 Vos over 5 years ago in reply to Gijoo Kim

Gijoo,

1) The max value the gauge can support is 655F.

2) The max communication speed is 100khz

Thanks,

Eric Vos