Semiconductor power converter apparatus
First Claim
1. A semiconductor power converter apparatus comprising:
- a semiconductor power conversion circuit in which a first semiconductor element having a temperature sensing unit and a second semiconductor element having a current sensing unit are connected in parallel, for causing the first and second semiconductor elements to perform switching operations;
an overheat protection circuit for performing overheating protection for the first and second semiconductor elements based on temperature information obtained from the temperature sensing unit of the first semiconductor element; and
an overcurrent protection circuit for performing overcurrent protection for the first and second semiconductor elements based on current information obtained from the current sensing unit of the second semiconductor element.
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Accused Products
Abstract
Even when one of IGBTs fails in a semiconductor power converter apparatus in which a plurality of semiconductor elements are connected in parallel, the remaining IGBT(s) is prevented from failing with a simple circuit configuration. The semiconductor power converter apparatus includes: a semiconductor power conversion circuit in which a first IGBT having a temperature sensing unit and a second IGBT having a current sensing unit are connected in parallel, for causing the first and second semiconductor elements to perform switching operations; an overheat protection circuit for performing overheat protection for the first and second IGBTs based on temperature information obtained from the temperature sensing unit of the first IGBT; and an overcurrent protection circuit for performing overcurrent protection for the first and second IGBTs based on current information obtained from the current sensing unit of the second IGBT.
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Citations
6 Claims
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1. A semiconductor power converter apparatus comprising:
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a semiconductor power conversion circuit in which a first semiconductor element having a temperature sensing unit and a second semiconductor element having a current sensing unit are connected in parallel, for causing the first and second semiconductor elements to perform switching operations; an overheat protection circuit for performing overheating protection for the first and second semiconductor elements based on temperature information obtained from the temperature sensing unit of the first semiconductor element; and an overcurrent protection circuit for performing overcurrent protection for the first and second semiconductor elements based on current information obtained from the current sensing unit of the second semiconductor element. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification