JPH09275686A - Inverter device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate drive wiring by unifying the directions of terminals for drive. SOLUTION: In this inverter device, terminals 3, 4 for drive are placed on the top of a transistor chip housing envelope on one side, and power collector terminals 1 are placed on the upper part or lower part of the terminals 3, 4 for drive either on the left side or on the right side. First transistor the power emitter terminals 2 of which are to be placed on the side opposite to the power collector terminals 1, and second transistors the terminal arrangement of which is the same as the first transistor are placed on the left side and the right side to form an inverter device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inverter device formed by connecting base insulated transistors.

[0002]

2. Description of the Related Art Conventionally, in the case of constructing a full-bridge type inverter as shown in FIG. 5, drive wiring does not receive an electromagnetic induction component due to a connecting bus bar between a power collector terminal and a power emitter terminal, and does not oscillate or malfunction. Also, as a technology that facilitates drive wiring work in the case of parallel connection, there is No. 62-104592.

This is as shown in FIGS. 6 and 7.
For the drive terminals 3 and 4 located on one side of the container, the first transistor 11 in which the power collector terminal 1 and the power emitter terminal 2 are arranged in this order, and for the drive terminals 3 and 4 located on one side of the container Power emitter terminal 2,
Using the second transistor 12 arranged in the order of the power collector terminal 1, the power emitter terminal 2 of the first transistor 11 and the power collector terminal 1 of the second transistor are adjacent to each other as shown in FIG. So that the drive terminals are located outside two adjacent transistors.

[0004]

However, the conventional method has the following problems. 1.2 types of transistors are required, the cost reduction due to the lot effect is halved, and identification management is also required. 2. Since the drive terminals are located outside the two adjacent transistors, the drive circuit board can be installed outside the two transistors, or can be installed on either side and secure the wiring space for the drive wiring on the other side. There is a need to. 3. For the transistor far from the input side, the wiring becomes longer from the DC smoothing capacitor and the inductance increases, so
High surge voltage occurs during switching.

Therefore, according to the present invention, the inverter circuit is composed of one type of transistor, and the terminals of the drive wiring are oriented in the same direction, thereby facilitating the drive wiring and reducing the inductance. The purpose is to provide.

[0006]

According to another aspect of the present invention, there is provided an inverter device in which a drive terminal is disposed on one of upper surfaces of a transistor chip housing envelope, and a power collector is provided on one of upper and lower sides of the drive terminal. An inverter device in which a first transistor in which a terminal is arranged and a power emitter terminal is arranged on the opposite side of the power collector terminal and a second transistor having the same terminal arrangement as the first transistor are arranged on the left and right sides. By configuring the above, the drive terminals can be arranged in one direction, the drive wiring and the power wiring do not intersect, the influence of electromagnetic induction is eliminated, and the wiring work is facilitated.

In the inverter device according to the second aspect of the present invention, the drive circuit board is directly attached to the drive terminal, which eliminates the need for drive wiring work with electric wires. Moreover, since the drive terminals are arranged in one direction, only one drive circuit board is required.

In the inverter device according to the third aspect, by disposing the DC smoothing capacitor in the vicinity of the power terminal, the wiring distance can be shortened and the inductance can be reduced. In the inverter device according to the fourth aspect, the inductance can be reduced by connecting the respective parts by laminating the insulating plate and the conductor.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an inverter device according to a first embodiment of the present invention, and FIG. 2 is a terminal layout diagram of transistors used in the inverter device of the present invention.

In the transistor of the present invention, the power collector terminal 1 and the power emitter terminal 2 are arranged one above the other in the conventional transistor, whereas the power collector terminal 1 and the power emitter terminal 2 are arranged on the left and right. There is.

The inverter device according to the first embodiment of the present invention is constructed by using the above transistors, and the transistors 11 to 14 are arranged so that the driving terminals 3 and 4 are in the same direction. Power emitter terminal 2 of transistor 11 and power collector terminal 1 of transistor 12
Are connected by a bus bar 31, the power emitter terminal 2 of the transistor 13 and the power collector terminal 1 of the transistor 14 are connected by a bus bar 32, and the power collector terminal 1 of the transistor 11 and the power collector terminal 1 of the transistor 13 are connected by a bus bar 35. The power emitter terminal 2 of the transistor 12 and the power emitter terminal 2 of the transistor 14 are connected by the bus bar 36.

With this configuration, the drive terminal wiring to the drive terminal can be made from one direction, and the drive wiring and the power wiring do not intersect with each other and the influence of electromagnetic induction is eliminated. .

FIG. 3 shows an inverter device according to a second embodiment of the present invention. The difference from the first embodiment is that the drive circuit board 5 is directly attached to the drive terminals 3 and 4.

With this structure, drive wiring work with electric wires is unnecessary, and the drive terminals are arranged in the same direction, so that only one drive circuit board is required.

FIG. 4 shows an inverter device according to a third embodiment of the present invention. The difference from the first embodiment is that a DC smoothing capacitor is connected to bus bar 35 and bus bar 36.

With this configuration, it is possible to dispose the DC smoothing capacitor in the vicinity of the power terminal, the wiring distance can be made short and the same, and low inductance can be achieved.

[0017]

In the inverter device according to the first aspect of the present invention, the drive terminal is arranged on one of the upper surfaces of the transistor chip housing envelope, and the power collector terminal is arranged on one of the upper and lower sides of the drive terminal. A first transistor having a power emitter terminal arranged on the opposite side of the power collector terminal and a second transistor having the same terminal arrangement as the first transistor arranged on the left and right sides to form an inverter device. By this, the drive terminals can be arranged in one direction, the drive wiring and the power wiring do not intersect, and the influence of electromagnetic induction disappears.
Also, the wiring work becomes easy.

According to the second aspect of the present invention, the drive circuit board is directly attached to the drive terminal, which eliminates the need for drive wiring work with electric wires. Moreover, since the drive terminals are arranged in one direction, only one drive circuit board is required.

In the inverter device according to the third aspect, by disposing the DC smoothing capacitor in the vicinity of the power terminal, the wiring distance can be shortened and the inductance can be reduced. In the inverter device according to the fourth aspect, the inductance can be reduced by connecting the respective parts by laminating the insulating plate and the conductor.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an inverter device according to a first embodiment of the present invention.

FIG. 2 is a terminal layout diagram of a transistor used in the inverter device of the present invention.

FIG. 3 is a configuration diagram of an inverter device according to a second embodiment of the present invention.

FIG. 4 is a configuration diagram of an inverter device according to a third embodiment of the present invention.

FIG. 5 is a circuit diagram of a full-bridge type inverter.

FIG. 6 is a terminal layout diagram of a conventional transistor.

FIG. 7 is a terminal layout diagram of a conventional transistor.

FIG. 8 is a configuration diagram of a conventional inverter device.

[Explanation of symbols]

 1 ... Power collector terminal 2 ... Power emitter terminal 3 ... Drive base terminal 4 ... Drive emitter terminal 5 ... Drive circuit board 9 ... DC smoothing capacitor 11,12,13,14… Transistor 31,32,35,36… Busbar 41,42,43,44… Drive wiring

Claims (4)

[Claims] 1. An inverter device configured by using a transistor having a power collector terminal, a power emitter terminal and a drive terminal on an upper surface of a transistor chip storage envelope, wherein a drive terminal is provided on one side of the transistor chip storage envelope. A first transistor having a power collector terminal disposed on one of the upper and lower sides of the drive terminal and a power emitter terminal disposed on the opposite side of the power collector terminal, and the first transistor. A second transistor having the same terminal arrangement, the first transistor and the second transistor are arranged on the left and right, the power collector terminal and the power emitter terminal are adjacent to each other, and the both terminals are adjacent to each other. Is connected to the inverter device. 2. The inverter device according to claim 1, wherein the drive circuit board is directly attached to the drive terminal. 3. The inverter device according to claim 1, wherein a DC smoothing capacitor connected to the DC side is arranged adjacently to shorten a wiring distance. 4. The inverter device according to claim 1, wherein each part is connected by laminating an insulating plate and a conductor.