JP3264617B2 - Inverter device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to an inverter device formed by connecting insulated base transistors.

[0002]

2. Description of the Related Art Conventionally, when a full-bridge type inverter as shown in FIG. 5 is constructed, a drive wiring does not receive oscillation and malfunction due to an electromagnetic induction component caused by a bus bar connected between a power collector terminal and a power emitter terminal. Japanese Utility Model Application Laid-Open No. Sho 62-104592 discloses a technique for easily performing drive wiring work when connecting in parallel.

[0003] This is as shown in Figs.
A first transistor 11 arranged in the order of a power collector terminal 1 and a power emitter terminal 2 for the drive terminals 3 and 4 located on one side of the container, and a drive transistor 3 and 4 located on one side of the container Power emitter terminal 2,
As shown in FIG. 8, the power emitter terminal 2 of the first transistor 11 and the power collector terminal 1 of the second transistor are arranged adjacent to each other using the second transistor 12 arranged in the order of the power collector terminal 1. And the drive terminals are located outside the two adjacent transistors.

[0004]

However, the conventional method has the following problems. Since 1.2 types of transistors are required, 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 is mounted outside the two transistors, or is mounted on one of them, and the wiring space for the drive wiring is secured on the other There is a need to. 3. Transistors far from the input side have longer wiring from the DC smoothing capacitor and higher inductance,
High surge voltage occurs during switching.

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

[0006]

In the inverter device according to the present invention, a package is provided on the upper surface of the transistor chip housing.
Power collector terminal, power emitter terminal and drive
A full bridge using transistors with
In the inverter device to be formed, a drive terminal is disposed on one side of the transistor chip housing, and a power collector terminal is disposed on one of the upper and lower left and right sides of the drive terminal. A first transistor having an emitter terminal disposed therein;
A second transistor having the same terminal arrangement as the first transistor; and each arm is connected to the first transistor.
And the second transistor are arranged on the left and right,
Make the collector terminal and the power emitter terminal
By connecting the two terminals in contact with each other,
These arms are for transistor drives that make up the arm
By arranging the terminals in the same direction , 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 is eliminated. Also, the wiring work becomes easy.

In the inverter device according to the second aspect, since the drive circuit board is directly attached to the drive terminal, the drive wiring operation using electric wires is not required. Further, 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 of the invention, by disposing the DC smoothing capacitor near the power terminal, the wiring distance is shortened, and the inductance can be reduced. In the inverter device according to the fourth aspect, by connecting each part by laminating the insulating plate and the conductor, it is possible to reduce the inductance.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an inverter device according to a first embodiment of the present invention, and FIG. 2 is a terminal arrangement 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 vertically, whereas the power collector terminal 1 and the power emitter terminal 2 are arranged left and right in the conventional transistor. I have.

The inverter device according to the first embodiment of the present invention is constituted by using the above-mentioned transistors, and the transistors 11 to 14 are arranged so that the drive 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 a 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 cross each other, so that 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 configuration, it is not necessary to perform a drive wiring operation using electric wires, and since the drive terminals are arranged in the same direction, 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 the bus bar 35 and the bus bar 36.

With this configuration, it is possible to arrange a DC smoothing capacitor in the vicinity of the power terminal, so that the wiring distance can be shortened and the same, and low inductance can be achieved.

[0017]

According to the first aspect of the present invention, a drive terminal is disposed on one of the upper surfaces of the transistor chip housing and a power collector terminal is disposed 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 constitute an inverter device. By this, the drive terminals can be arranged in one direction, the drive wiring and the power wiring do not cross, and the influence of electromagnetic induction is eliminated,
Also, the wiring work becomes easy.

In the inverter device according to the second aspect of the present invention, since the drive circuit board is directly attached to the drive terminal, it is not necessary to perform a drive wiring operation using electric wires. Further, 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 of the invention, by disposing the DC smoothing capacitor near the power terminal, the wiring distance is shortened and the inductance can be reduced. In the inverter device according to the fourth aspect, by connecting each part by laminating the insulating plate and the conductor, it is possible to reduce the inductance.

[Brief description of the 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 arrangement 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 inverter.

FIG. 6 is a terminal arrangement 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]

 DESCRIPTION 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

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H02M 7/48 H02M 7/5387

Claims (4)

(57) [Claims] 1. A full bridge using a transistor having a power collector terminal, a power emitter terminal, and a drive terminal on an upper surface of a transistor chip housing envelope.
In the inverter device to be constructed, a drive terminal is arranged on one side of the transistor chip storage enclosure, and a power collector terminal is arranged on one of the upper and lower left and right sides of the drive terminal. A first transistor having an emitter terminal disposed therein; and a second transistor having the same terminal arrangement as the first transistor. Each arm is configured to move the first transistor and the second transistor left and right. The power collector terminal and the power emitter terminal are arranged adjacent to each other, and the adjacent terminals are connected to each other.
Each arm is a transistor driver that constitutes an arm.
An inverter device wherein the terminals for the eve are arranged in the same direction . 2. The inverter device according to claim 1, wherein a 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, and a wiring distance is shortened. 4. The inverter device according to claim 1, wherein each of the components is connected by laminating an insulating plate and a conductor.