BQ34Z100-G1: Separate Rsense

Alfred Logico

Part Number: BQ34Z100-G1

Hi Team,

I received an inquiry from one of my customers with regards to the BQ34Z100PWR-G1. Would it be possible to use this for two separate Rsense? This is for BBU application and they wanted to know if they can use this part for separate Rsense for the charger and discharger. They need to ensure that charger and discharger should not turn on at the same time. Hence, they have separate R-sense for each, so that once there is current passing thru the Discharger R-sense, then charger will be turned off.

Thanks!

Best Regards,

Alfred

over 6 years ago

0 Bryan Kahler over 6 years ago

TI__Mastermind 25955 points

Hi Alfred,

Could you provide a proposed schematic? This device utilizes a low side current sense resistor. Separate CHG and DSG FETS on the power rail may be utilized to disconnect charger and load (controlled by a host mcu and protection circuitry).

This device is configured and calibrated for one current sense resistor by default.

Sincerely,
Bryan Kahler

0 Alfred Logico over 6 years ago in reply to Bryan Kahler

TI__Expert 5060 points

Hi Bryan,

Thanks for the reply! I responded in email/

Best Regards,

Alfred

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BQ34Z100-G1: Separate Rsense