Publication

Abstract : —Chargers are those devices which require a constant output voltage. For constant output voltage, especially for portable devices , buck -boost converters are usually employed as the charging circuit. Buck-boost converters are dc-dc converters, which is a combination of buck and boost converters. In a conventional non-isolatedvoltage buck/boosting converter, even though the voltage remains constant, the output current is pulsating. Therefore, the voltage across the output capacitor contains more voltage ripple. Here, a new charging circuit is explained. In the proposed charging circuit, the voltage remains constant with a non-pulsating output current. In this paper, the proposed charging circuit is illustrated in detail and the comparison of conventional buck-boost converter with the proposed converter is also explained.