PATENT CLAIM ANALYSIS

Application Number: 16075882
Application Type: Utility
Filing Date: 2018-08
Publication Date: 2019-02
Patent Classification: ["315", "20000R"]

Abstract:
Various improvements are provided to resonant DC/DC and AC/DC converter circuit. The improvements are of particular interest for LLC circuits. Some examples relate to self-oscillating circuit and others relate to converter circuits with frequency control, for example for power factor correction, driven by an oscillator.

Claim (Index 1):
An AC/DC PFC converter, comprising:\n an AC input for providing an input voltage and an input current to the input of a rectifier, wherein the rectifiers is arranged for rectifying the input voltage to obtain a rectified input voltage; a half bridge inverter for receiving the rectified input voltage and comprising a first switch and a second switch, wherein a first output is defined from a node between the switches; an LLC circuit coupled to the first output and having a second output for supplying a converter output voltage and current, wherein a voltage across a capacitor of the LLC circuit is provided as an electrical feedback parameter, wherein the electrical feedback parameter is representative of the input current, wherein the capacitor is arranged for acting as a resonance capacitor; and a control circuit for generating a gate drive signal for controlling the switching of the first switch and the second switch in dependence on the electrical feedback parameter, wherein a high gate drive signal turns on one switch and turns off the other switch and a low gate drive signal turns off the one switch and turns on the other switch, wherein the control circuit comprises an outer control loop for setting a threshold level for the electrical feedback parameter proportional to the converter output voltage or current and the rectified input voltage without measurement of the input current, and an inner control loop for comparing the electrical feedback parameter with the threshold to derive the gate drive signal and to provide power factor correction.

Metadata:
- Claim Count in Document: 28.0
- Percentile: 96.0
- Lexical Diversity: 1.38889
- Patent Class: 315.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['16075778', '16073361', '16073862', '16078871', '16087014']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7793697884626141
- 35 USC 102 Novelty (BERT): 0.5774377473206304
- Combined Prediction Score: 0.7591765843484157
- Mean Citation Score: 432.274318
- Max Citation Score: 470.4678
- Similarity Product: 444.2577501229405

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

Dataset: test