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Switching power supply device and adjustable power supply system including the same

A technology of switching power supply and switching elements, which is applied in the field of adjustable power supply system, can solve problems such as complicated circuit structure, and achieve the effect of simplifying circuit structure

Active Publication Date: 2015-05-13
TOSHIBA LIGHTING & TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, in the above-mentioned background art, the circuit structure for making lamps such as bulb-type LED lamps or bulb-type fluorescent lamps dimmable by using phase-control dimmers such as two-wire control dimmers will be difficult. complication

Method used

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  • Switching power supply device and adjustable power supply system including the same
  • Switching power supply device and adjustable power supply system including the same
  • Switching power supply device and adjustable power supply system including the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0056] First Embodiment of Switching Power Supply Device

[0057] In the first embodiment, if figure 1 As shown, the switching power supply device SRA has an input terminal t1, an input terminal t2, a rectification mechanism Rec, a switching operation conversion circuit SC, an output terminal t7, and an output terminal t8, and operates a load LS.

[0058] The input end t1 and the input end t2 are connected to an alternating current power source AC via a phase control circuit PCD. Such as figure 2 As shown, the phase control circuit PCD is of a two-wire type inserted into one of a pair of lines extending from an alternating current power supply AC. Moreover, this phase control circuit PCD is comprised including the terminal t01, the terminal t02, the triac TRIAC, and the phase shift circuit PS.

[0059] The triac TRIAC is connected between the terminal t01 and the terminal t02. In addition, the triac TRIAC is a triac (thyristor) that can use one gate regardless of the curr...

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PUM

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Abstract

According to one embodiment of the invention, there is provided a switching power supply device including a rectifying circuit and a switching operation conversion circuit. The rectifying circuit receives a phase-controlled alternating voltage to rectify to a direct voltage. The switching operation conversion circuit starts up by being applied with the direct voltage, and includes a normally on type switching element and an off driving circuit. The normally on type switching element passes an input current, and the off driving circuit turns off the switching element when the input current reaches a prescribed value. The switching operation conversion circuit converts the direct voltage to an output voltage different from the direct voltage by repeating a switching operation of turning on and off the switching element.

Description

technical field [0001] The present invention relates to a switching power supply device and an adjustable power supply system (system) equipped with the switching power supply device. The switching power supply device works by inputting an AC voltage controlled by phase, and energizes a load by outputting and make the load work. Background technique [0002] The two-wire phase control dimmer is composed of a three-terminal triac (triac) to control the phase of the AC voltage, and is mainly used for lamp (lamp) dimming. This dimmer is designed assuming an incandescent bulb as a load, and is configured as a phase control that operates by connecting in series with the filament of the incandescent bulb as a load when the triac is turned on. circuit to determine the conduction phase of the triac. However, the dimmer has become widely available, so it is desirable that the dimmer can be used to replace the bulb-type light-emitting diode (Light Emitting Diode, LED) lamp or bulb-t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/08H05B37/02H05B44/00
CPCH02M1/4225Y02B70/10H05B45/3725H05B45/385
Inventor 北村纪之高桥雄治高桥浩司石北彻铃木浩史
Owner TOSHIBA LIGHTING & TECH CORP