PATENT CLAIM ANALYSIS

Application Number: 15872481
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-05
Patent Classification: ["363", "021170"]

Abstract:
A method for controlling a power switch of a power converter includes: detecting whether a zero current event occurs; generating an error signal; generating an ramp signal having a slope proportional to a ratio of an on time during which of the power switch is turned on in a previous switching cycle to a time length of the previous switching cycle; comparing the ramp signal with the error signal; turning on the power switch when the zero current event occurs; and turning off the power switch and rapidly lowering the level of the ramp signal when the ramp signal is greater than or equal to the error signal.

Claim (Index 1):
A method for controlling a power switch ( 113 ) of a flyback power converter ( 100 ), the flyback power converter ( 100 ) comprising a primary side coil ( 107 ), a secondary side coil ( 109 ), and an inductive coil ( 111 ), wherein the primary side coil ( 107 ) is coupled between an input voltage signal (Vin) and the power switch ( 113 ), the secondary side coil ( 109 ) is configured to operably provide an output voltage signal (Vout) and an output current signal (Iout), the inductive coil ( 111 ) is configured to operably sense the primary side coil ( 107 ) to generate an inductive signal (SS), and the power switch ( 113 ) is coupled between the primary side coil ( 107 ) and a fixed-voltage terminal, the method comprising:\n detecting the inductive signal (SS) to determine whether a zero current event occurs; generating an error signal (COMP) corresponding to the output voltage signal (Vout) or the output current signal (Iout) according to a reference signal (Vref); generating an ramp signal (RAMP) having a slope proportional to a ratio of an on time during which of the power switch ( 113 ) is turned on in a previous switching cycle to a time length of the previous switching cycle; comparing the ramp signal (RAMP) with the error signal (COMP); turning on the power switch ( 113 ) when the zero current event occurs; and when the ramp signal (RAMP) is greater than or equal to the error signal (COMP), turning off the power switch ( 113 ) and rapidly lowering the level of the ramp signal (RAMP).

Metadata:
- Claim Count in Document: 4.0
- Percentile: 86.0
- Lexical Diversity: 2.12963
- Patent Class: 363.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14547870', '12016950', '10973748', '12674618', '13191282']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8054985781042127
- 35 USC 102 Novelty (BERT): 0.5244946466010165
- Combined Prediction Score: 0.7773981849538931
- Mean Citation Score: 227.033244
- Max Citation Score: 351.64597000000015
- Similarity Product: 252.5540528156376

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