BQ40Z50: Gauge for 3 cell lithium Battery with 18650 core

Jimmy Zhou95

Part Number: BQ40Z50

Are there some gauge with 10 A discharge current and 3A charge current for 3 cell lithium battery with 18650 core(I find that BQ40Z50 is a gauge with 7A discharge current)?

over 7 years ago

0 Swaminathan Ramanathan75031 over 7 years ago

TI__Expert 6575 points

Hi,
The TI EVM only supports 7Amps, but if you design your own PCB, the device itself can support up to 28Amps of current as long as the sense resistor is selected such that the voltage across the sense resistor is limited to +-100mV.
Regards,
Swami

0 Miguel Angel Rios over 7 years ago

TI__Expert 4640 points

Hi, Jimmy,

Have you see this document? e2e.ti.com/.../6562.Gauge-Design-Configurations-for-High-Charge--Discharge-Rate-Applications.pdf

Thanks

Miguel

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BQ40Z50: Gauge for 3 cell lithium Battery with 18650 core