CN200973059Y

CN200973059Y - High power density miniature AC/DC power supply module

Info

Publication number: CN200973059Y
Application number: CN 200620013691
Authority: CN
Inventors: 简海鸥
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-04-19
Filing date: 2006-04-19
Publication date: 2007-11-07
Anticipated expiration: 2016-04-19

Abstract

The utility model related to a high-power density miniature AC/DC power supply module, which comprises a metal shell, a circuit board positioned in the metal shell, a main power circuit, an input circuit, a control circuit and a filtration circuit, wherein the main power circuit, the input circuit, the control circuit and the filtration circuit are arranged on the circuit board and the transistor power apparatus of the main power circuit directly contacts with the metal shell directly. By using the power supply module, when the volume is reduced and the power consumption is equal, so that the output power of the power supply module is greater. Through the metal shell, the heat can be educed out effectively, thereby preventing the irradiation from influencing the equipment.

Description

The miniature AC/DC power module of high power density

[technical field]

The utility model relates to high power density AC/DC power module field.

[background technology]

At present, several families are only arranged in high power AC/DC power module field, aspect small size, power is the highest only can accomplish 3W, and adopts the plastic cement shell, and poor radiation reduces its life-span greatly.Because plastics heatproof problem, its operating ambient temperature is low, and because of the plastic housing reason, its operating ambient temperature is low, can not prevent that the noise that self produces from removing to disturb peripheral equipment, can not prevent the interference of outer bound pair self.

[utility model content]

The purpose of this utility model is to provide a kind of can and have the more AC/DC power module of high-output power at small size more under the situation of equal power consumption.

The purpose of this utility model is achieved in that the miniature AC/DC power module of this high power density comprises metal shell and is positioned over this metal shell interior circuit board, main power circuit, input circuit, control circuit and filter circuit, this main power circuit, input circuit, control circuit and filter circuit are installed on the circuit board, and the transistor power device of this main power circuit directly contacts with metal shell.

Described circuit board comprises first, second circuit board that is connected, this main power circuit, input circuit, control circuit are installed on the first circuit board, and the components and parts of this filter circuit only are distributed on the first circuit board or only are distributed on the second circuit board or are distributed in simultaneously on first, second circuit board.

Described filter circuit comprises first capacitor, inductor and second capacitor, and this first capacitor, inductor and second capacitor only are distributed on the first circuit board or only are distributed on the second circuit board or are distributed in simultaneously on first, second circuit board.

Described first capacitor is in parallel with one the 3rd capacitor at least, the 3rd capacitor be installed in first or second circuit board on.

Described metal shell inside convexes with fixture block, the residing circuit board of the transistor power device of main power circuit and this fixture block clamping.

Compared with prior art, the utlity model has following advantage: by adopting this power module, under the situation that reduces volume and equal power consumption, make the power output of power module bigger, by adopting metal shell, can effectively heat be derived, and be beneficial to the radiation effect equipment that prevents.

[description of drawings]

Fig. 1 is a structure chart of the present utility model.

Fig. 2 is circuit theory diagrams of the present utility model.

Fig. 3 is another structure chart of the present utility model.

[embodiment]

See also Fig. 1 to Fig. 3, the miniature AC/DC power module of the utility model high power density comprises metal shell and is placed in main power circuit, input circuit, control circuit, ∏ type filter circuit, first circuit board 3 and second circuit board 6 in this metal shell.This main power circuit, input circuit and control circuit are installed on the first circuit board 3, and the transistor power device in this main power circuit contact with metal shell 7 and be convenient to the heat radiation.This ∏ type filter circuit comprises first capacitor 1 (being the C1 among Fig. 2), inductor 2 (being the C2 among Fig. 2), second capacitor 4 (being the C2 among Fig. 3).First capacitor 1 and the inductor 2 that are positioned at before this second capacitor 4 are directly installed on this first circuit board 3, and two end pin of this second capacitor 4 directly are welded on corresponding two output pins 31 on the first circuit board 3.

When this second capacitor 4 is the electrochemical capacitor of single straight cutting, then directly the two ends pin of this second capacitor 4 directly is welded on the corresponding output pin 31; If this second capacitor 4 is also in parallel with at least one the 3rd capacitor 5, then this second, third capacitor 4,5 and inductor 2 can be installed on the second circuit board 6, and first capacitor 1 is installed in first circuit board 3, certainly also can adopt other compound mode, be placed on two circuit boards and each components and parts of this ∏ type filter circuit are placed on one of them circuit board or divide.Leave on this second circuit board 6 and two output pins positions, 31 corresponding hole (not shown), then second, third electric capacity 4,5 is crouched to put and be welded on the second circuit board 6, and then this second circuit board 6 is welded on the first circuit board 3 corresponding output pins 31, after this welded, the output pin 31 of first circuit board 3 stretched out the position, hole of second circuit board 6.

In the utility model, this first circuit board 3 is mounted in the metal shell 7, these metal shell 7 inside protrude out and are provided with fixture block 71, thereby will block this first circuit board 3 by this fixture block 71, the transistor power device of main power circuit 8 is well contacted with shell 7, reduce the thermal resistance between power component and the metal shell 7 greatly, increase fixture block 71 simultaneously, prevent to be pulled out by external force behind this power module encapsulating, increase mechanical strength.

By adopting this power module, reducing volume and under the situation of equal power consumption, making the power output of power module bigger.

Claims

1. miniature AC/DC power module of high power density, it is characterized in that: it comprises metal shell and is positioned over this metal shell interior circuit board, main power circuit, input circuit, control circuit and filter circuit, this main power circuit, input circuit, control circuit and filter circuit are installed on the circuit board, and the transistor power device of this main power circuit directly contacts with metal shell.

2. the miniature AC/DC power module of high power density as claimed in claim 1, it is characterized in that: described circuit board comprises first, second circuit board that is connected, this main power circuit, input circuit, control circuit are installed on the first circuit board, and the components and parts of this filter circuit only are distributed on the first circuit board or only are distributed on the second circuit board or are distributed in simultaneously on first, second circuit board.

3. the miniature AC/DC power module of high power density as claimed in claim 2, it is characterized in that: described filter circuit comprises first capacitor, inductor and second capacitor, and this first capacitor, inductor and second capacitor only are distributed on the first circuit board or only are distributed on the second circuit board or are distributed in simultaneously on first, second circuit board.

4. the miniature AC/DC power module of high power density as claimed in claim 3 is characterized in that: described first capacitor is in parallel with one the 3rd capacitor at least, the 3rd capacitor be installed in first or second circuit board on.

5. as the miniature AC/DC power module of any described high power density among the claim 1-4, it is characterized in that: described metal shell inside convexes with fixture block, the residing circuit board of transistor power component of main power circuit and this fixture block clamping.