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 19):
An apparatus comprising:\n an active clamp flyback converter comprising a high-side switch and a low-side switch; a control circuit comprising a first timing circuit, a second timing circuit, a third timing circuit, a first state register, and a second state register, wherein the first state register's output is coupled to control the low-side switch, and the second state register's output is coupled to control the high-side switch, and wherein the second timing circuit and the third timing circuits are coupled to the second state register to control the second state register's output and the first timing circuit is coupled to the first state register to control the first state register's 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): 0.8127936875206291
- 35 USC 102 Novelty (BERT): 0.4809329520302939
- Combined Prediction Score: 0.7796076139715956
- Mean Citation Score: 213.516146
- Max Citation Score: 234.92357
- Similarity Product: 191.09930117466808

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