PATENT CLAIM ANALYSIS

Application Number: 16247520
Application Type: Utility
Filing Date: 2019-01
Publication Date: 2020-01
Patent Classification: ["363", "021140"]

Abstract:
A ZVS (zero voltage switching) control circuit for use in a flyback power converter includes a primary side controller and a secondary side controller. The primary side controller generates a switching signal to control a power transformer through a power transistor to generate an output voltage. The secondary side controller generates an SR (synchronous rectifier) signal to control an SR transistor at a secondary side of the power transformer. The SR signal includes an SR-control pulse and a ZVS pulse. The SR-control pulse controls the SR transistor according to a demagnetizing period of the power transformer. The ZVS pulse determines the starting timing of the switching signal to achieve zero voltage switching for the power transistor. The secondary side controller generates the ZVS pulse after a delay time from when the power transformer is demagnetized. The delay time is determined according to an output load of the output voltage.

Claim (Index 11):
The ZVS control circuit of  claim 1 , wherein the secondary side controller circuit further includes a first counter which is configured to operably count a first number according to a first valley signal; wherein the first valley signal is generated when the secondary side power transformer signal is lower than an SR threshold, and the secondary side controller circuit disables generation of the ZVS pulse when the first number exceeds a first number threshold.

Metadata:
- Claim Count in Document: 11.0
- Percentile: 99.0
- Lexical Diversity: 2.77586
- Patent Class: 363.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['16134906', '16160837', '15147182', '15809595', '15989025']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8501521794590761
- 35 USC 102 Novelty (BERT): 0.5485277913961176
- Combined Prediction Score: 0.8199897406527802
- Mean Citation Score: 328.27005
- Max Citation Score: 429.8369
- Similarity Product: 318.3300301175952

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