Tung V Pham

US Patent:

20190346528, Nov 14, 2019

Filed:

May 8, 2018

Appl. No.:

15/974271

Inventors:

- San Diego CA, US
Rajeev JAIN - San Diego CA, US
Swarna NAVUBOTHU - San Diego CA, US
Alan LEWIS - Sunnyvale CA, US
Martin SAINT-LAURENT - Austin TX, US
Tung Nang PHAM - Austin TX, US
Joseph TERREGROSSA - Vista CA, US
Paras GUPTA - San Diego CA, US
Somasekhar MARADANI - San Diego CA, US

International Classification:

G01R 35/00
H03K 5/003
G01R 19/25

Abstract:

Aspects of the disclosure are directed to voltage-based current sensing. In accordance with one aspect, voltage-based current sensing may include performing a coarse calibration of a voltage based current sensor to determine a coarse offset; performing a fine calibration of the voltage based current sensor to determine a fine offset; performing a frequency calibration of the voltage based current sensor to determine a frequency offset; and performing a transfer function calibration of the voltage based current sensor to determine a sensor transfer function using one or more of the coarse offset, the fine offset and the frequency offset; and measuring a load current using the sensor transfer function.