PATENT CLAIM ANALYSIS

Application Number: 15944565
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-10
Patent Classification: ["363", "021030"]

Abstract:
An apparatus is disclosed for improving zero voltage switching (“ZVS”) of a converter circuit such as an active clamp flyback converter. The apparatus includes a first timing circuit acting as the T D(L-H)  optimizer, which uses the zero-crossing of the auxiliary winding voltage directly to adaptively vary the dead time. A second timing circuit acting as the T D(H-L)  optimizer adaptively varies the dead time with a simple piece-wide linear function as an approximation of the complex optimal equation. A third timing circuit acting as the T DM  optimizer contains a charge-pump circuit that adaptively adjusts the ON time of the clamp switch based on the zero-voltage detection of switching node voltage and feed-forwards the input voltage signal to enhance tuning speed so that the correct amount of negative magnetizing current is generated to improve zero voltage switching.

Claim (Index 13):
The apparatus of  claim 12 , further comprising a third timing circuit with at least one input configured to receive the first input from the at least one first sensing circuit and wherein the second state register is connected to receive a reset signal based at least in part on a value of a third timing circuit output signal and to output the second state register high state or the second state register low state based on the reset signal and the second timing circuit output, wherein the third timing circuit is configured to feedforward the input voltage of the flyback converter circuit as at least part of the value of the third timing circuit output.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 91.0
- Lexical Diversity: 1.73864
- Patent Class: 363.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15334170', '15334173', '15715818', '15662301', '12417780']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8114222295687212
- 35 USC 102 Novelty (BERT): 0.4906007950949911
- Combined Prediction Score: 0.7793400861213482
- Mean Citation Score: 213.516146
- Max Citation Score: 234.92357
- Similarity Product: 169.74064500007154

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