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Switching Regulator And Power Supply Device Including The Same

A technology of switching regulators and inductors, which is applied in the direction of circuit devices, circuit heating devices, printed circuit grounding devices, etc., which can solve the problems of high temperature damage of circuit components and reduce the heat dissipation of circuit components, etc.

Inactive Publication Date: 2013-05-08
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the method of mounting circuit components in such close proximity reduces the heat dissipation of each circuit component
In the worst case, even high temperature damage to circuit components may occur

Method used

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  • Switching Regulator And Power Supply Device Including The Same
  • Switching Regulator And Power Supply Device Including The Same
  • Switching Regulator And Power Supply Device Including The Same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0030] refer to figure 1 , The circuit configuration of a switching regulator having an interleaved PFC circuit according to this embodiment will be described.

[0031] The power supply device 100 includes the switching regulator according to this embodiment. This switching regulator consists of a converter circuit with an interleaved PFC circuit. An input DC voltage is applied between the input node N11 and the input node N12. The input DC voltage is boosted and smoothed, and output between the output node N21 and the output node N22. The interleaved PFC circuit has an interleaved PFC main circuit IM. The interleaved PFC main circuit IM performs step-up processing on the input DC voltage. The boosted voltage is smoothed by electrolytic capacitor C. The input node N12 and the output node N22 are commonly connected to the ground line GND.

[0032] The interleaved PFC main circuit IM is composed of two sets of main circuit elements. The first group of main circuit compon...

example 2

[0051] Refer below Figure 5 , A perspective view of a main circuit element arrangement of a switching regulator having an interleaved PFC circuit according to Modification 2 of the present embodiment will be described.

[0052] A perspective view of a main circuit element arrangement of a switching regulator including an interleaved PFC circuit according to Modification 2 of the present embodiment will be described below.

[0053] The configuration of the interleaved PFC circuit according to the second embodiment modification figure 1 The embodiment shown is the same. In addition, in image 3 and Figure 5 The circuit components and heat sinks with the same designation are also the same in structure and will not be described again.

[0054] In Modification 2, a plurality of heat dissipation holes 15 are formed on the third heat dissipation portion 11 c of the heat sink 11 . The opening 15 a and the opening 15 b are provided in the space region of the heat sink 11 where ...

Deformed example 3

[0057] Refer below Figure 6 , A perspective view of a main circuit element arrangement of a switching regulator having an interleaved PFC circuit according to Modification 3 of the present embodiment will be described.

[0058] The configuration and the figure 1 The embodiment shown is the same. In addition, in Figure 6 and image 3 , Figure 4 , Figure 5 The circuit components and heat sinks with the same designation are also the same in structure and will not be described again.

[0059] A switching regulator having an interleaved PFC circuit according to Modification 3 has Figure 4 The ground wire 13 included in Modification 1. and, with Figure 5 In the same manner as Modification 2, a plurality of heat dissipation holes 15 are provided on the third heat dissipation portion 11c of the heat sink 11 . The ground potential is provided through the ground wire 13, which can improve the shielding effect of the radiator 11. Moreover, the heat dissipation holes 15 c...

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PUM

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Abstract

The invention provides a switching regulator and power supply device including the same. A heat sink (11) comprised of a first heat dissipation portion (11a), a second heat dissipation portion (11b), and a third heat dissipation portion (11c) is mounted on a circuit board (14). Two sets of an inductor (L1, L2) that constitute an interleaved power factor correction circuit are arranged in a spatial region formed in the inside of the heat sink and are mounted on the circuit board. Two sets of a transistor (Tr1, Tr2) and a diode (D1, D2) that constitute the interleaved power factor correction circuit are attached to an outer surface of the first heat dissipation portion and are mounted on the circuit board.

Description

technical field [0001] The present invention relates to a switch regulator and a power supply device with the switch regulator, in particular to a switch regulator with an interleaved PFC (Power Factor Correction: power factor correction) circuit and a power supply device with the switch regulator. Background technique [0002] The power factor correction circuit of the switching regulator uses inductors, transistors and diodes as the main circuit components. For example, an IGBT (Insulated Gate Bipolar Transistor: Insulated Gate Bipolar Transistor) is applied to the above transistor. Hereinafter, the power factor correction circuit is also referred to as a PFC (PowerFactor Correction) circuit. In high-load switching regulators with output power of several thousand watts or more, how to suppress the increase in the size of the main circuit components and the increase in temperature caused by the increase in circuit current has been a long-standing issue. [0003] As a coun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/00H02M1/44H05K7/20
CPCH02M3/1584H01L2924/0002H05K1/0203H02M2003/1586H05K2201/1003H05K1/18H05K1/0215H02M7/003H05K2201/10166H05K2201/066H05K1/0216H05K2201/10174H02M1/4225Y02B70/10Y02P80/10H02M3/1586H01L2924/00
Inventor 甲斐岛良次菅原有理
Owner SHARP KK
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