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 1):
A power controller in use of a power supply with a transformer including a primary winding, a secondary winding and an auxiliary winding, wherein the power supply includes a power switch connected in series with the primary winding between an input voltage and an input ground, and the auxiliary winding has a ground end and a floating end, where the ground end is for connecting to the input ground, the power controller comprising:\n a PWM signal generator for providing a PWM signal to control the power switch and to regulate an output voltage of the power supply, wherein the PWM signal determines an ON time and an OFF time of the power switch; a feedback node connected via a resistor to the floating end; and a deviation detector connected to the feedback node for detecting a winding voltage at the floating end, wherein when the winding voltage has a variation fitting a first predetermined condition during the ON time, the deviation detector 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): 0.7766756491482577
- 35 USC 102 Novelty (BERT): 0.4731208701719077
- Combined Prediction Score: 0.7463201712506228
- Mean Citation Score: 187.209482
- Max Citation Score: 198.63899
- Similarity Product: 164.7575842285371

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