PATENT CLAIM ANALYSIS

Application Number: 15776133
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-11
Patent Classification: ["323", "271000"]

Abstract:
A gate drive circuit including a drive-on element that applies an on-state voltage to a gate of a drive target semiconductor element and a drive-off element that applies an off-state voltage to the gate is such that a recovery switch, a reactor, and a capacitor are connected in series between output terminals of the gate drive circuit as a recovery circuit that can recover a charge accumulated in input capacitance of the drive target semiconductor element when turning on, and the drive-on element, the drive-off element, and the recovery switch are controlled by a control circuit, whereby power consumption of the gate drive circuit is reduced.

Claim (Index 17):
The gate drive circuit according to  claim 16 , wherein the gate drive circuit is a half-bridge inverter gate drive circuit configured of a positive electrode side driver switch, a negative electrode side driver switch, a positive electrode side gate power supply, and a negative electrode side gate power supply, the recovery circuit is connected in parallel between the output terminals of the half-bridge inverter gate drive circuit, and the control circuit, in order to turn on the drive target semiconductor element, turns off the negative electrode side driver switch, then turns on the negative electrode side recovery switch for a certain period, turns on the positive electrode side recovery switch for a certain period, and turns on the positive electrode side driver switch, thereby maintaining an on-state of the drive target semiconductor element, and in order to turn off the drive target semiconductor element, the control circuit turns off the positive electrode side driver switch, then turns on the positive electrode side recovery switch for a certain period, turns on the negative electrode side recovery switch for a certain period, and turns on the negative electrode side driver switch, thereby maintaining an off-state of the drive target semiconductor element.

Metadata:
- Claim Count in Document: 35.0
- Percentile: 93.0
- Lexical Diversity: 2.13208
- Patent Class: 323.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15777126', '11300270', '12170472', '12525169', '15122438']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7472869146015401
- 35 USC 102 Novelty (BERT): 0.4925717711024046
- Combined Prediction Score: 0.7218154002516265
- Mean Citation Score: 200.930102
- Max Citation Score: 210.94096
- Similarity Product: 138.7124713881874

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