Power conversion component with integral output current shunt and its manufacturing method
First Claim
1. A power conversion component comprising:
- a power semiconductor element having an output line, a drive circuit connected to the power semiconductor element for driving the same, a protect circuit connected to the power semiconductor element, said power conversion component element, drive circuit and protect circuit being integrated in a same package, a shunt resistor provided in series with the output line from the power conversion component element to detect an output current and including two bonding areas spaced apart from each other and having a plurality of bonding locations, and two ends connected to the two bonding areas respectively, one bonding area being connected to the output line leading to the power conversion component element through the bonding locations and the other bonding area being connected to the output line leading to an output end through the bonding locations; and
control pins connected to the ends of the shunt resistor to be connected to an external device through a wiring pattern, said bonding locations in each bonding area being changed relative to each other and the control pin corresponding thereto to change a resistance of the shunt resistor.
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Accused Products
Abstract
An intelligent power module (IPM) is formed of an inverter having power elements, a predriver for driving the inverter, and a protect circuit, and all these components are integrated into the same package. A shunt resistor is provided at an output of the inverter so that an end-to-end voltage of the shunt resistor can be output to an external device. This configuration enables an output current from an inverter apparatus incorporating the IPM to be detected without using a current transformer that requires a large installation space. In addition, the module terminals of the IPM and the terminal blocks of the inverter apparatus are integrated together to eliminate the need for wire rods and set screws for connections which are used to connect the module terminals and the terminal blocks together.
13 Citations
13 Claims
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1. A power conversion component comprising:
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a power semiconductor element having an output line, a drive circuit connected to the power semiconductor element for driving the same, a protect circuit connected to the power semiconductor element, said power conversion component element, drive circuit and protect circuit being integrated in a same package, a shunt resistor provided in series with the output line from the power conversion component element to detect an output current and including two bonding areas spaced apart from each other and having a plurality of bonding locations, and two ends connected to the two bonding areas respectively, one bonding area being connected to the output line leading to the power conversion component element through the bonding locations and the other bonding area being connected to the output line leading to an output end through the bonding locations; and
control pins connected to the ends of the shunt resistor to be connected to an external device through a wiring pattern, said bonding locations in each bonding area being changed relative to each other and the control pin corresponding thereto to change a resistance of the shunt resistor. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A power conversion component comprising:
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a power conversion component element having a main circuit, internal wires, and module terminals connected to the main circuit, at least some of the module terminals having terminal blocks into which the power conversion component is integrated, a plurality of said terminal blocks being connected together through the internal wires to allow one line to have the plurality of the terminal blocks, a drive circuit connected to the power conversion component element for driving the same, and a protect circuit connected to the power conversion component element, said power conversion component element, drive circuit and protect circuit being integrated in a same package. - View Dependent Claims (8, 9, 10, 11)
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- 12. A process for manufacturing a power conversion element comprising a power conversion component element, a drive circuit for the power conversion component element, and a protect circuit for the power conversion component element, which are integrated into a same package, wherein a shunt resistor is provided in series with an output line from the power conversion component element to detect an output current, said shunt resistor including two bonding areas spaced apart from each other and having a plurality of bonding locations, and two ends connected to the two bonding areas respectively, one bonding area being connected to the output line leading to the power conversion component element through the bonding locations and the other bonding area being connected to the output line leading to an output end through the bonding locations, said bonding locations in each bonding area being changed to set a predetermined resistance value of said shunt resistor.
Specification