Semiconductor power module
A semiconductor power module including an insulating substrate having one surface and another surface, an output side terminal arranged at a one surface side of the insulating substrate, a first power supply terminal arranged at the one surface side of the insulating substrate, a second power supply terminal to which a voltage of a magnitude different from a voltage applied to the first power supply terminal is to be applied, and arranged at another surface side of the insulating substrate so as to face the first power supply terminal across the insulating substrate, a first switching device arranged at the one surface side of the insulating substrate and electrically connected to the output side terminal and the first power supply terminal, and a second switching device arranged at the one surface side of the insulating substrate and electrically connected to the output side terminal and the second power supply terminal.
1. A semiconductor power module comprising:
an insulating substrate having one surface and another surface;
an output side terminal arranged at a one surface side of the insulating substrate;
a first power supply terminal arranged at the one surface side of the insulating substrate;
a second power supply terminal to which a voltage of a magnitude different from a voltage applied to the first power supply terminal is to be applied, and arranged at an other surface side of the insulating substrate so as to face the first power supply terminal across the insulating substrate;
a first switching device arranged at the one surface side of the insulating substrate and electrically connected to the output side terminal and the first power supply terminal; and
a second switching device arranged at the one surface side of the insulating substrate and electrically connected to the output side terminal and the second power supply terminal;
wherein a direction of a current flowing through the first power supply terminal and a direction of a current flowing through the second power supply terminal are made opposite across the insulating substrate.
2. The semiconductor power module according to claim 1 , wherein a half-bridge circuit is formed by the output side terminal, the first power supply terminal, the second power supply terminal, the first switching device, and the second switching device.
3. The semiconductor power module according to claim 1 , wherein
the first power supply terminal is a high voltage side terminal and
the second power supply terminal is a low voltage side terminal to which a voltage lower than the voltage applied to the first power supply terminal is to be applied.
4. A semiconductor power module comprising:
an insulating substrate having one surface and another surface;
an output side terminal arranged at a one surface side of the insulating substrate;
a first power supply terminal arranged at the one surface side of the insulating substrate;
a second power supply terminal to which a voltage of a magnitude different from a voltage applied to the first power supply terminal is to be applied, and arranged at an other surface side of the insulating substrate so as to face the first power supply terminal across the insulating substrate;
a first switching device arranged at the one surface side of the insulating substrate and electrically connected to the output side terminal and the first power supply terminal; and
a second switching device arranged at the one surface side of the insulating substrate and electrically connected to the output side terminal and the second power supply terminal;
wherein the insulating substrate has a removed region by which heat generated from the first switching device and the second switching device is dissipated from the one surface side to the other surface side of the insulating substrate.
5. A semiconductor power module comprising:
an insulating substrate having one surface and another surface;
an output side terminal arranged at a one surface side of the insulating substrate;
a first power supply terminal arranged at the one surface side of the insulating substrate;
a second power supply terminal to which a voltage of a magnitude different from a voltage applied to the first power supply terminal is to be applied, and arranged at an other surface side of the insulating substrate so as to face the first power supply terminal across the insulating substrate;
a first switching device arranged at the one surface side of the insulating substrate and electrically connected to the output side terminal and the first power supply terminal;
a second switching device arranged at the one surface side of the insulating substrate and electrically connected to the output side terminal and the second power supply terminal; and
a supporting substrate facing the one surface of the insulating substrate and having a front surface supporting the first switching device and the second switching device, and arranged across an interval from the insulating substrate to the one surface side of the insulating substrate.
6. The semiconductor power module according to claim 5 , wherein the supporting substrate has a rear surface positioned at an opposite side of the front surface and
a heat dissipation member is arranged at the rear surface of the supporting substrate.
7. The semiconductor power module according to claim 1 , wherein the insulating substrate has a thickness of not more than 5 mm.
8. A semiconductor power module according to claim 1 , comprising:
an insulating substrate having one surface and another surface;
an output side terminal arranged at a one surface side of the insulating substrate;
a first power supply terminal arranged at the one surface side of the insulating substrate;
a second power supply terminal to which a voltage of a magnitude different from a voltage applied to the first power supply terminal is to be applied, and arranged at an other surface side of the insulating substrate so as to face the first power supply terminal across the insulating substrate;
a first switching device arranged at the one surface side of the insulating substrate and electrically connected to the output side terminal and the first power supply terminal; and
a second switching device arranged at the one surface side of the insulating substrate and electrically connected to the output side terminal and the second power supply terminal;
wherein the output side terminal has a thickness greater than a thickness of the first power supply terminal or a thickness of the second power supply terminal.
9. A semiconductor power module comprising:
an insulating substrate having one surface and another surface;
an output side terminal arranged at a one surface side of the insulating substrate;
a first power supply terminal arranged at the one surface side of the insulating substrate;
a second power supply terminal to which a voltage of a magnitude different from a voltage applied to the first power supply terminal is to be applied, and arranged at an other surface side of the insulating substrate so as to face the first power supply terminal across the insulating substrate;
a first switching device arranged at the one surface side of the insulating substrate and electrically connected to the output side terminal and the first power supply terminal; and
a second switching device arranged at the one surface side of the insulating substrate and electrically connected to the output side terminal and the second power supply terminal;
wherein the output side terminal has a thickness not less than a total value of a thickness of the first power supply terminal and a thickness of the second power supply terminal.
10. The semiconductor power module according to claim 1 , wherein
the first switching devices are arranged at the one surface side of the insulating substrate and
the second switching devices are arranged at the one surface side of the insulating substrate.
11. A semiconductor power module comprising:
an insulating substrate having one surface and another surface;
an output side terminal arranged at a one surface side of the insulating substrate;
a first power supply terminal arranged at the one surface side of the insulating substrate;
a second power supply terminal to which a voltage of a magnitude different from a voltage applied to the first power supply terminal is to be applied, and arranged at an other surface side of the insulating substrate so as to face the first power supply terminal across the insulating substrate;
a first switching device arranged at the one surface side of the insulating substrate and electrically connected to the output side terminal and the first power supply terminal;
a second switching device arranged at the one surface side of the insulating substrate and electrically connected to the output side terminal and the second power supply terminal; and
a resin sealing the insulating substrate so as to selectively expose the output side terminal, the first power supply terminal, and the second power supply terminal,
wherein the first power supply terminal and the second power supply terminal are exposed from the resin together with the insulating substrate.
12. The semiconductor power module according to claim 11 , wherein the first power supply terminal exposed from the resin is arranged at a position across an interval from a peripheral edge of the insulating substrate exposed from the resin toward an inner side and
the second power supply terminal exposed from the resin is arranged at a position across an interval from a peripheral edge of the insulating substrate exposed from the resin toward an inner side.
13. The semiconductor power module according to claim 12 , wherein a distance between a peripheral edge of the first power supply terminal exposed from the resin and the peripheral edge of the insulating substrate exposed from the resin is set to not less than 2 mm and
a distance between a peripheral edge of the second power supply terminal exposed from the resin and the peripheral edge of the insulating substrate exposed from the resin is set to not less than 2 mm.
14. The semiconductor power module according to claim 11 , wherein the output side terminal is arranged at a position facing the first power supply terminal and the second power supply terminal across the resin in plan view.
15. The semiconductor power module according to claim 11 , further comprising:
a first control terminal driving and controlling the first switching device; and
a second control terminal driving and controlling the second switching device; and
wherein the resin seals the insulating substrate so as to selectively expose the first control terminal and the second control terminal.
16. The semiconductor power module according to claim 15 , wherein the first control terminal and the second control terminal are exposed from the resin in a direction different from a direction in which the output side terminal is exposed from the resin and a direction in which the first power supply terminal and the second power supply terminal are exposed from the resin.
17. The semiconductor power module according to claim 15 , wherein
the first switching device includes a pair of first main electrodes and a first control electrode by which a current flowing between the pair of first main electrodes is controlled,
the second switching device includes a pair of second main electrodes and a second control electrode by which a current flowing between the pair of second main electrodes is controlled,
the first control terminal is electrically connected to the first control electrode of the first switching device, and
the second control terminal is electrically connected to the second control electrode of the second switching device.
18. The semiconductor power module according to claim 1 , wherein the first switching device and the second switching device includes a MISFET, an IGBT, or a BJT.
19. The semiconductor power module according to claim 18 , wherein the MISFET, the IGBT, or the BJT is formed in an Si substrate, an SiC substrate, or a wide band gap type semiconductor substrate.
20. The semiconductor power module according to claim 1 , wherein a voltage of not less than 500V is applied between the first power supply terminal and the second power supply terminal.