BQ51050B: Value selection for Ros resistor?

Phil Vella

Part Number: BQ51050B

The typical application schematics for this part show a resistor "Ros" between the RECT and FOD pins, but I don't see any advice on value selection for that. Some guidance would be appreciate, thanks.

over 6 years ago

0 Bill Johns over 6 years ago

TI__Guru* 75876 points

Hello
The Ros resistor is part of Foreign Object Detection (FOD) circuit along with RFOD.
Default values used on Evaluation board are Ros=42.2k, RFOD=200 and RILIM=110. Final value is determined after FOD Calibration.
Calibration procedure can be found in BQ51050B Product folder under Tools & Software, "Foreign Object Detection (FOD) Calibration/Tuning Tool".

0 Phil Vella over 6 years ago in reply to Bill Johns

Prodigy 50 points

many thanks Bill

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BQ51050B: Value selection for Ros resistor?