PATENT CLAIM ANALYSIS

Application Number: 16195712
Application Type: Utility
Filing Date: 2018-11
Publication Date: 2019-05
Patent Classification: ["363", "021140"]

Abstract:
A switching power supply circuit with synchronous rectifier has an energy storage component, a rectifier switch coupled to a secondary side of the energy storage component, and a secondary side control circuit. The secondary side control circuit provides a driving signal to control the rectifier switch. When the drain-source voltage across the rectifier switch is less than a first threshold value, the secondary side control circuit controls the driving signal to be a maximum voltage to control the rectifier switch being fully on for a predetermined duration. After a predetermined duration, the secondary side control circuit adjusts the voltage of the driving signal based on the drain-source voltage across the rectifier switch and a second threshold value.

Claim (Index 5):
The switching power supply circuit of  claim 1 , wherein the secondary side control circuit further comprises:\n a threshold selection circuit, configured to receive the first threshold value, the second threshold value, a third threshold value and a fourth threshold value, and configured to provide a turn-on threshold value and a turn-off threshold value, wherein when an on-time period of the rectifier switch is within the predetermined duration, the threshold selection circuit is configured to provide the turn-on threshold value according to the first threshold value, and configured to provide the turn-off threshold value according to the third threshold value, after the on-time period of the rectifier switch reaches the predetermined duration, the threshold selection circuit is configured to provide the turn-on threshold value according to the second threshold value, and configured to provide the turn-off threshold value according to the fourth threshold value, wherein the fourth threshold value is less than the third threshold value, and the fourth threshold value is greater than the second threshold value; and a gate logic circuit, configured to provide the driving signal and control the on-time period of the rectifier switch by the driving signal according to a compare result of the drain-source voltage across the rectifier switch and the first threshold value, and configured to adjust the driving signal based on a difference between the drain-source voltage across the rectifier switch and the turn-on threshold value, and configured to control a turn-off moment of the rectifier switch by the driving signal based on a compare result of the drain-source voltage across the rectifier switch and the turn-off threshold value.

Metadata:
- Claim Count in Document: 4.0
- Percentile: 98.0
- Lexical Diversity: 2.40385
- Patent Class: 363.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['13478575', '13966248', '15061192', '14290621', '16022645']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8408574965395698
- 35 USC 102 Novelty (BERT): 0.4979963908066787
- Combined Prediction Score: 0.8065713859662806
- Mean Citation Score: 256.14009000000004
- Max Citation Score: 265.99088
- Similarity Product: 202.5446038564682

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