PATENT CLAIM ANALYSIS

Application Number: 16243309
Application Type: Utility
Filing Date: 2019-01
Publication Date: 2019-08
Patent Classification: ["363", "021160"]

Abstract:
A power controller provides open-circuit protection for a power supply when an open circuit occurs between a ground end of an auxiliary winding and an input ground. The power controller provides a PWM signal to determine an ON time and an OFF time of a power switch connected in series between an input voltage and the input ground. A deviation detector in the power controller detects a winding voltage at a floating end of the auxiliary winding during the ON time, and asserts an open protection signal when a variation of the winding voltage during the ON time fits a first predetermined condition, so as to keep the power switch turned OFF and provide the open-circuit protection.

Claim (Index 13):
A power supply, comprising:\n a transformer with a primary winding, an auxiliary winding and a secondary winding, wherein the auxiliary winding has a floating end and a ground end; a power switch connected in series with the primary winding between an input voltage and an input ground, wherein the ground end is for connecting to the input ground; and a power controller providing a PWM signal to control the power switch, the power controller comprising a feedback node connected to the auxiliary winding via a resistor, the PWM signal determining an ON time and an OFF time of the power switch; wherein the power controller detects a winding voltage at the floating end, and, when the winding voltage has a variation fitting a first predetermined condition during the ON time, asserts an open protection signal to keep the power switch turned OFF, so as to provide open-circuit protection for an open circuit occurring between the ground end and the input ground.

Metadata:
- Claim Count in Document: 4.0
- Percentile: 99.0
- Lexical Diversity: 2.21818
- Patent Class: 363.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15692562', '15949118', '12911448', '15982965', '13798148']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7763640408464817
- 35 USC 102 Novelty (BERT): 0.4749007094868681
- Combined Prediction Score: 0.7462177077105204
- Mean Citation Score: 187.209482
- Max Citation Score: 198.63899
- Similarity Product: 162.1241152816779

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

Dataset: test