Mitsubishi Electric Corporation

Mitsubishi Denki Kabushiki Kaisha

Tomofumi Tanaka

Shinya Nakagawa

Toru Iwagami

Kosuke Yamaguchi

Shinji Sakai

Takuya Shiraishi

Masahiro Kato

Hiroshi Sakata

An inverter-control element operates with a power-supply potential supplied to an inverter-control-system power-supply terminal to output a signal for controlling an inverter switching element. A brake control element operates with a power-supply potential supplied to a brake-control-system power-supply terminal to output a signal for controlling a brake switching element. A first metal component includes a plurality of protrusions protruding from a sealing resin, is supported by the sealing resin with a portion embedded in the sealing resin, and is electrically connected to each of the inverter-control-system power-supply terminal and the brake-control-system power-supply terminal.

Power semiconductor device

A power semiconductor device includes a plurality of power chips sealed in a package to control power and an IC sealed in the package to control each of the power chips. The IC is disposed at the center part of the package in the plan view. The plurality of power chips are disposed so as to surround the IC in the plan view.

Converter output terminals of a converter are located adjacent to each other on a first side and an external terminal for external connection of a composite module is located adjacent to the converter output terminal. AC input terminals of the converter are located on a second side. Each of the distances between the converter output terminals and between the converter output terminal and the external terminal is set to a first formation pitch. Each of the distances between the AC input terminals is set to a second formation pitch. The first formation pitch is set to be equal to the second formation pitch.

Modular power conversion semiconductor device

A semiconductor module includes a voltage generator, and a heat dissipating mechanism composed of, for example, an insulating heat dissipating sheet and a heat sink. The voltage generator is capable of generating, by using a built-in linear regulator function, a power source voltage to drive a boost converter based on a voltage boosted by the boost converter. The voltage generator is mounted on the heat dissipating mechanism.

Semiconductor module and boost rectifier circuit

Among first IGBTs and first MOSFETs, a transistor arranged near a first gate control circuit gives, through a gate thereof, a gate control signal supplied from the first gate control circuit to a gate of a transistor arranged at a position farther from the first gate control circuit. Among second IGBTs and second MOSFETs, a transistor arranged near a second gate control circuit gives, through a gate thereof, a gate control signal supplied from the second gate control circuit to a gate of a transistor arranged at a position farther from the second gate control circuit.

A power module includes an IGBT; a MOSFET connected in parallel with the IGBT; a lead frame having a first frame portion on which the IGBT is mounted and a second frame portion on which the MOSFET is mounted, and having a step by which the first frame portion is located at a first height and the second frame portion is located at a second height larger than the first height; and an insulation sheet for a heat sink which is disposed on an underside of only the first frame portion of the lead frame.

Power module

A control output signal is supplied to a gate electrode of an insulated gate transistor from a control signal output terminal of a control device, however, with regard to the insulated gate transistor, a control output signal is also influenced when that transistor is short-circuited, and a signal waveform different from that in a normal operating state occurs. The short-circuit is detected by monitoring the control output signal of the insulated gate transistor, and in case of the short-circuit, the short-circuit protection of the insulated gate transistor is performed by forcing the control device to stop that control output signal.

Growing community of inventors

Tokyo, Japan

Tomofumi Tanaka