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 18):
The apparatus of  claim 3 , wherein the third timing circuit is configured to increase or decrease the value of the third timing circuit output to adjust when the high-side switch is turned off in a current switching cycle according to a switching voltage in a previous switching cycle.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 91.0
- Lexical Diversity: 1.73864
- Patent Class: 363.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['15334170', '15334173', '15715818', '15662301', '12417780']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.828191048493927
- 35 USC 102 Novelty (BERT): 0.4986031817889299
- Combined Prediction Score: 0.7952322618234273
- Mean Citation Score: 213.516146
- Max Citation Score: 234.92357
- Similarity Product: 157.14616206729474

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