BUCK-BOOST CONVERTER AND METHOD FOR CONTROLLING BUCK-BOOST CONVERTER

A buck-boost converter (100) includes an inductor (L), a first switch (SW1), a second switch (SW2), a third switch (SW3), a fourth switch (SW4) and a fifth switch (SW5), wherein the first switch (SW1) is coupled between an input voltage and a first terminal (N1) of the inductor (L), the second switc...

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Bibliographische Detailangaben
Hauptverfasser:	LIN, Shih-Mei, HONG, Hao-Ping
Format:	Patent
Sprache:	eng ; fre ; ger
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 CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	A buck-boost converter (100) includes an inductor (L), a first switch (SW1), a second switch (SW2), a third switch (SW3), a fourth switch (SW4) and a fifth switch (SW5), wherein the first switch (SW1) is coupled between an input voltage and a first terminal (N1) of the inductor (L), the second switch (SW2) is coupled between a reference voltage and the first terminal (N1) of the inductor (L), the third switch (SW3) is coupled between an output voltage and a second terminal (N2) of the inductor (L), the fourth switch (SW4) is coupled between the reference voltage and the second terminal (N2) of the inductor (L), and the fifth switch (SW5) is connected in parallel with the third switch (SW3). When the buck-boost converter (100) operates in a buck mode, the first switch (SW1) and the second switch (SW2) are turned on alternately; when the buck-boost converter (100) operates in a boost mode, the third switch (SW3) and the fourth switch (SW4) are turned on alternately; and the fifth switch (SW5) is controlled by a mode control signal.