| 发明名称 | Switching mode power supply with variable switching operation frequency and the driving method thereof | ||
| 摘要 | The present invention relates to a switching mode power supply and a driving method thereof. In the present invention, a supply voltage is generated by using a start voltage that corresponds to input power, and a switching operation frequency of a power switch is changed according to an increase/decrease of the supply voltage. | ||
| 申请公布号 | US9374008(B2) | 申请公布日期 | 2016.06.21 |
| 申请号 | US200912544893 | 申请日期 | 2009.08.20 |
| 申请人 | Fairchild Korea Semiconductor Ltd. | 发明人 | Jang Kyung-Oun;Park Gyoung-Soo;Baek Hyeong-Seok;Kim Se-Hwan |
| 分类号 | H02M3/335;H02M1/08;H02M3/156 | 主分类号 | H02M3/335 |
| 代理机构 | Okamoto & Benedicto LLP | 代理人 | Okamoto & Benedicto LLP |
| 主权项 | 1. A switching mode power supply (SMPS) that generates output power by converting input power, comprising: a power switch; and a controller that generates a supply voltage by using a start voltage corresponding to the input power and a capacitor that supplies an operation current for the controller, the controller changes a switching operation frequency of the power switch during normal operation of the power switch according to variation of a level of the supply voltage. | ||
| 地址 | Bucheon KR | ||