PATENT CLAIM ANALYSIS

Application Number: 15754501
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-09
Patent Classification: ["363", "055000"]

Abstract:
A DC-DC converter includes a protection function for handling a reverse connection state, and a protection function for handling a predetermined abnormality other than a reverse connection state, while reducing conduction loss. The DC-DC converter includes a first protection circuit unit, and a switching element on a first conductive path of a high-voltage side switches to an OFF state upon a predetermined abnormal state being detected to prevent a current from flowing into a voltage conversion unit. Furthermore, a reverse connection protection circuit unit and a switching element, on a third conductive path between the voltage conversion unit and a reference conductive path, is configured to switch to an off state if at least a low-voltage side power supply unit is in a reverse connection state, preventing a current from the reference conductive path. Thus, a current is prevented from flowing toward a power supply that is improperly connected.

Claim (Index 1):
A DC-DC converter comprising:\n a voltage conversion unit that includes a first switching element, is provided between a first conductive path that is electrically connected to a high-potential side terminal of a primary-side power supply unit and a second conductive path that is electrically connected to a high-potential side terminal of a secondary-side power supply unit, converts a voltage applied to the first conductive path by switching the first switching element between an ON state and an OFF state, and outputs the resulting voltage to the second conductive path; an abnormal state detection unit that detects a predetermined abnormal state; a first protection circuit that includes a second switching element unit that is provided on a high-voltage side conductive path, out of the first conductive path and the second conductive path, and switches between an OFF state, in which the second switching element blocks at least a current flowing in a direction toward the voltage conversion unit, and an ON state, in which the second switching element releases the blocking, the first protection circuit unit switching the second switching element to an OFF state upon the abnormal state detection unit detecting the abnormal state; and a second protection circuit unit that includes a third switching element that is provided on a third conductive path that is located between the voltage conversion unit and a reference conductive path that is maintained at a predetermined reference potential that is lower than the potential of the first conductive path and the potential of the second conductive path, and switches between an OFF state, in which the third switching element blocks at least a current flowing from the reference conductive path, and an ON state, in which the third switching element releases the blocking, the second protection circuit unit switching the third switching element to an ON state if a terminal of at least a low-voltage side power supply unit, out of the primary-side power supply unit and the secondary-side power supply unit, is in a regular connection state, and switching the third switching element to an OFF state if the terminal of at least the low-voltage side power supply unit is in a reverse connection state.

Metadata:
- Claim Count in Document: 9.0
- Percentile: 88.0
- Lexical Diversity: 2.20548
- Patent Class: 363.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15778296', '14821022', '15845424', '16301620', '16084419']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8171950731619305
- 35 USC 102 Novelty (BERT): 0.4959286511000174
- Combined Prediction Score: 0.7850684309557392
- Mean Citation Score: 239.703984
- Max Citation Score: 287.2555200000001
- Similarity Product: 249.20426749491705

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