PATENT CLAIM ANALYSIS

Application Number: 16004536
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2019-12
Patent Classification: ["323", "271000"]

Abstract:
Methods and apparatus for current sensing and error correction in a switched-mode power supply composed of a high-side transistor coupled to a low-side transistor are described. One example method generally includes capturing a current associated with the low-side transistor at a first time corresponding to the low-side transistor turning off; capturing a current associated with the high-side transistor at a second time corresponding to a first delay after the high-side transistor turns on; capturing the current associated with the high-side transistor at a third time corresponding to the high-side transistor turning off; and applying a first correction current to a current-summing node of the current-sensing circuit for a first interval based on the first delay, wherein the first correction current is based on the captured current associated with the low-side transistor at the first time and on the captured current associated with the high-side transistor at the second time.

Claim (Index 12):
A current-sensing circuit for a switched-mode power supply comprising a high-side transistor and a low-side transistor coupled to the high-side transistor, the current-sensing circuit comprising:\n a high-side current-sensing amplifier having an input for coupling to the high-side transistor; a low-side current-sensing amplifier having an input for coupling to the low-side transistor; a first sample-and-hold circuit coupled to an output of the low-side current-sensing amplifier and configured to capture a current associated with the low-side transistor at a first time corresponding to the low-side transistor turning off; a second sample-and-hold circuit coupled to an output of the high-side current-sensing amplifier and configured to capture a current associated with the high-side transistor at a second time corresponding to a first delay after the high-side transistor turns on; a third sample-and-hold circuit coupled to the output of the high-side current-sensing amplifier and configured to capture the current associated with the high-side transistor at a third time corresponding to the high-side transistor turning off; a first voltage-to-current converter having an input coupled to an output of the first sample-and-hold circuit and to an output of the second sample-and-hold circuit; a first switch coupled between an output of the high-side current-sensing amplifier and a sensing node for the current-sensing circuit; and a second switch coupled between an output of the first voltage-to-current converter and the sensing node.

Metadata:
- Claim Count in Document: 26.0
- Percentile: 94.0
- Lexical Diversity: 2.76786
- Patent Class: 323.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15973787', '15940905', '12837521', '13753722', '14822294']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7304096503592872
- 35 USC 102 Novelty (BERT): 0.5309151406622005
- Combined Prediction Score: 0.7104601993895785
- Mean Citation Score: 253.790012
- Max Citation Score: 379.91916
- Similarity Product: 291.1766940846634

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

Dataset: test