PATENT CLAIM ANALYSIS

Application Number: 15910027
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-09
Patent Classification: ["327", "109000"]

Abstract:
The present disclosure discloses a gate voltage control circuit of an IGBT and a control method thereof. The gate voltage control circuit of the IGBT comprises a voltage control circuit, an active clamping circuit and a power amplifier circuit. A control voltage outputted by the voltage control circuit indirectly controls a gate voltage of the IGBT, so as to achieve a better control of the gate voltage of the IGBT with a smaller loss. It may prevent the active clamping circuit from a too-early response and may increase the active clamping circuit response speed; and may avoid the voltage oscillation of the collector-emitter voltage Vce and the gate voltage Vge, and may improve the reliability of the IGBTs connected in series.

Claim (Index 4):
The gate voltage control circuit of the IGBT according to  claim 1 , wherein the active clamping circuit comprises: third to fourth diodes, fourth to sixth resistors, first to second capacitors, and second to third Zener diodes, wherein,\n a cathode of the third diode is connected with the third terminal of the active clamping circuit; an anode of the third diode is electrically connected with a first terminal of the fourth resistor; a second terminal of the fourth resistor, a first terminal of the first capacitor and a first terminal of the fifth resistor are electrically connected with an anode of the fourth diode; a second terminal of the first capacitor, a second terminal of the fifth resistor and an anode of the second Zener diode are electrically connected with a first terminal of the second capacitor; a cathode of the second Zener diode and a second terminal of the second capacitor are electrically connected with an anode of the third Zener diode; a cathode of the third Zener diode is connected with the first terminal of the active clamping circuit; a cathode of the fourth diode is electrically connected with a first terminal of the sixth resistor; and a second terminal of the sixth resistor is connected with the second terminal of the active clamping circuit.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 90.0
- Lexical Diversity: 2.30357
- Patent Class: 327.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['11986615', '15034952', '14483846', '13098287', '14438232']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8165752354167142
- 35 USC 102 Novelty (BERT): 0.5143068989702345
- Combined Prediction Score: 0.7863484017720662
- Mean Citation Score: 304.09233400000005
- Max Citation Score: 325.50946
- Similarity Product: 258.7692968952441

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