PATENT CLAIM ANALYSIS

Application Number: 16270499
Application Type: Utility
Filing Date: 2019-02
Publication Date: 2019-06
Patent Classification: ["323", "271000"]

Abstract:
Current sensing with RDS ON  correction is disclosed. In an embodiment, a method comprises: measuring an approximate temperature of a MOS transistor switch by a temperature sensor to yield a measured temperature; calculating a corrected temperature from the measured temperature using a stored temperature sensor gain and offset correction function; measuring a gate drive voltage for the MOS transistor; calculating a voltage correction factor using a stored voltage correction function, wherein the stored voltage correction function is a function of the corrected temperature and the gate drive voltage; measuring a RDS ON  voltage drop across the MOS transistor switch to yield a measured RDS ON  voltage drop; and calculating the current using the measured RDS ON  drop and the voltage correction factor.

Claim (Index 16):
A system comprising:\n a power source configured to provide a voltage signal; a voltage regulator configured to regulate the voltage signal from the power source and produce an output voltage signal, wherein the voltage regulator includes a MOS transistor switch used in producing the output voltage signal, and wherein the voltage regulator includes a calibrated current sensor used to sense current though the MOS transistor switch, wherein the calibrated current sensor comprises:\n a processing device; \n an on-chip temperature sensor, coupled to provide a measured temperature signal of a MOS transistor switch to the processing device; \n a memory device coupled to the processing device and configured to store a temperature sensor gain and offset correction function and a voltage correction function; and \n wherein the processing device is configured to:\n receive a gate drive voltage for the MOS transistor switch; \n receive the measured temperature signal and calculate a corrected temperature from the measured temperature signal using the stored temperature sensor gain and offset correction function; \n instruct at least one circuit element to multiply a measured RDS ON  voltage drop by a voltage correction factor to yield a corrected RDS ON  voltage drop, wherein the voltage correction factor is determined using the stored voltage correction function; and \n calculate a current of the MOS transistor switch from the corrected RDS ON  voltage drop for use by a voltage regulator to regulate a voltage signal.

Metadata:
- Claim Count in Document: 38.0
- Percentile: 99.0
- Lexical Diversity: 2.69388
- Patent Class: 323.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14572361', '15997415', '12399543', '11006193', '16224039']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7133544837687482
- 35 USC 102 Novelty (BERT): 0.5042680125563496
- Combined Prediction Score: 0.6924458366475084
- Mean Citation Score: 198.8022528
- Max Citation Score: 312.61444
- Similarity Product: 278.2951567055416

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test