STEP-DOWN DC/DC CONVERTER AND CONTROL IC THEREOF, OFFICE COMMUNICATION APPARATUS, AND ELECTRIC BICYCLE

PROBLEM TO BE SOLVED: To improve the reliability of a control IC in a DC/DC converter.SOLUTION: A control IC 200 is included in a diode-rectification type step-down DC/DC converter 100. An N-channel DMOS-type switching transistor M1 is provided between an input terminal VCC and a switching terminal...

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Bibliographische Detailangaben
Hauptverfasser:	KARASAWA SHINYA, MATSUKI TAKESHI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS BASIC ELECTRIC ELEMENTS BASIC ELECTRONIC CIRCUITRY CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY GENERATION PULSE TECHNIQUE SEMICONDUCTOR DEVICES
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To improve the reliability of a control IC in a DC/DC converter.SOLUTION: A control IC 200 is included in a diode-rectification type step-down DC/DC converter 100. An N-channel DMOS-type switching transistor M1 is provided between an input terminal VCC and a switching terminal LX. A first diode D11 and an N-channel DMOS-type low-side transistor M11 are provided in series between the switching terminal LX and a grounding terminal GND.SELECTED DRAWING: Figure 3 【課題】ＤＣ／ＤＣコンバータのコントロールＩＣの信頼性を改善する。【解決手段】ダイオード整流型の降圧ＤＣ／ＤＣコンバータ１００のコントロールＩＣ２００が提供される。入力端子ＶＣＣとスイッチング端子ＬＸの間には、ＮチャンネルＤＭＯＳ型のスイッチングトランジスタＭ１が設けられる。スイッチング端子ＬＸと接地端子ＧＮＤの間には、第１ダイオードＤ１１およびＮチャンネルＤＭＯＳ型のローサイドトランジスタＭ１１が直列に設けられる。【選択図】図３