PATENT CLAIM ANALYSIS

Application Number: 16158202
Application Type: Utility
Filing Date: 2018-10
Publication Date: 2019-04
Patent Classification: ["363", "021060"]

Abstract:
Electronic circuitry and method of operating the same to shape and reduce the circulating current through the active clamp in a flyback converter and to harvest most of the leakage inductance energy to provide the bias power. Methodologies for minimizing the circulating energy in the clamp circuit in order to improve efficiency of operation of the same. A method for using a portion of the leakage inductance energy in order to create zero voltage switching conditions at the main primary switch.

Claim (Index 9):
A method for operation of electronic circuitry having primary and secondary sides and comprising:\n a flyback power converter including\n an input voltage source, \n a transformer having primary and secondary windings, on the primary and secondary sides, respectively, \n a main switch in series with the primary winding on the primary side, and \n a synchronous rectifier in series with the secondary winding on the secondary side, and \n an active clamp circuit across the main switch, the active clamp circuit containing a clamp switch and the clamp capacitor in series with the clamp switch, wherein said circuitry is characterized by an electrical charge, injected into the clamp capacitor after the main switch is turned off, in operation, said electrical charge having a first charge value, the method comprising: electrically-connecting said circuitry with an auxiliary electronic circuit in series with the clamp capacitor, wherein the auxiliary circuit contains two rectifiers and an auxiliary energy storage; and directing a current, flowing through a leakage inductance of the primary side in operation of said circuitry, to flow through the clamp capacitor and then through a first of the two rectifiers towards the auxiliary energy storage to change said first charge value to a second charge value, wherein the second charge value is smaller than the first charge value, wherein a current passing through the clamp capacitor after the mains switch is turned off is a clamp capacitor current.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 97.0
- Lexical Diversity: 1.71429
- Patent Class: 363.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15829253', '12417780', '15042885', '10776967', '12075344']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8364892700760553
- 35 USC 102 Novelty (BERT): 0.5044784233957533
- Combined Prediction Score: 0.8032881854080252
- Mean Citation Score: 301.976696
- Max Citation Score: 312.62048
- Similarity Product: 274.54695602861403

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