PATENT CLAIM ANALYSIS

Application Number: 15865212
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-07
Patent Classification: ["363", "021140"]

Abstract:
A flyback power converter circuit converting an input voltage to an output voltage includes a transformer, a power switch, a synchronous rectifier (SR) switch, and a secondary side control circuit. The secondary side control circuit controls the SR switch to be ON when the power switch is OFF. The secondary side control circuit includes a driving switch for controlling the SR switch, a synchronous control circuit powered by a voltage related to the output voltage, which controls the driving switch to operate the SR switch, and a clamping circuit including a clamping switch and a clamping switch control circuit. The clamping switch control circuit controls the clamping switch according to a current inflow terminal voltage of the clamping switch and/or the voltage related to the output voltage, such that, during a secondary side power-on period, an equivalent impedance of the current inflow terminal of the clamping switch is smaller than a predetermined clamping impedance.

Claim (Index 22):
The secondary control circuit of  claim 18 , wherein the secondary side control circuit further includes a second driving switch which is coupled between the control terminal of the SR switch and a driving input voltage, wherein the clamping switch control circuit includes:\n a first clamping resistor and/or a first clamping current source circuit, which is coupled between the control terminal of clamping switch and the driving input voltage such that in the secondary side power-on time period, the equivalent impedance of the current inflow terminal of the clamping switch is smaller than the predetermined clamping impedance; wherein the clamping current source circuit is configured to operably generate a clamping current from the driving input voltage to the control terminal of the clamping switch, wherein the driving input voltage relates to the output voltage.

Metadata:
- Claim Count in Document: 2.0
- Percentile: 86.0
- Lexical Diversity: 2.81667
- Patent Class: 363.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['13966248', '15147182', '12604246', '15809595', '10346807']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8406877856328632
- 35 USC 102 Novelty (BERT): 0.5041396566619041
- Combined Prediction Score: 0.8070329727357672
- Mean Citation Score: 256.97822599999995
- Max Citation Score: 264.48245
- Similarity Product: 180.30947560257908

Labels:
- Claim Label 101: 1
- Claim Label 102: 0
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 0
- Label 101 Adjusted: 1

Dataset: test