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 1):
A gate voltage control circuit of an IGBT, comprising:\n an active clamping circuit comprising a first terminal, a second terminal, and a third terminal, the first terminal being connected with a collector of the IGBT for receiving a collector-emitter voltage of the IGBT, and the second terminal being connected with a gate of the IGBT; a power amplifier circuit comprising a first terminal and a second terminal, the third terminal of the active clamping circuit being connected with the first terminal of the power amplifier circuit, the second terminal of the power amplifier circuit being coupled to the gate of the IGBT for outputting a gate voltage; and a voltage control circuit comprising a first terminal and a second terminal, wherein the first terminal of the voltage control circuit is configured to receive a drive signal, the second terminal of the voltage control circuit is connected with the third terminal of the active clamping circuit and the first terminal of the power amplifier circuit for outputting a control voltage which controls the gate voltage.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 90.0
- Lexical Diversity: 2.30357
- Patent Class: 327.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['11986615', '15034952', '14483846', '13098287', '14438232']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7981233022315548
- 35 USC 102 Novelty (BERT): 0.5111712853556607
- Combined Prediction Score: 0.7694281005439654
- Mean Citation Score: 304.09233400000005
- Max Citation Score: 325.50946
- Similarity Product: 266.3520931847405

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