| 发明名称 | Power supply devices and control method thereof | ||
| 摘要 | A power supply device is provided. The power supply device provides a maintenance voltage at an output terminal to a system chip of a system and includes a first battery, a capacitor, a charging circuit, and a monitoring circuit. The first battery provides a battery voltage. The capacitor stores a capacitor voltage. The charging circuit is coupled to the capacitor. The monitoring circuit detects whether the battery voltage is less than a first threshold and whether the capacitor voltage is larger than a second threshold and generates a control signal according to the determination result. When the monitoring circuit detects that the battery voltage is less than the first threshold and the capacitor voltage is not larger than the second threshold, the monitoring circuit asserts the control signal to control the charging circuit to charge the capacitor. | ||
| 申请公布号 | US9170621(B2) | 申请公布日期 | 2015.10.27 |
| 申请号 | US201213368576 | 申请日期 | 2012.02.08 |
| 申请人 | WISTRON CORP. | 发明人 | Chen Po-Chuan |
| 分类号 | H02J7/00;H02J7/14;G06F1/26;G06F1/30;G06F1/32;H02J7/34;H02J9/00 | 主分类号 | H02J7/00 |
| 代理机构 | McClure, Qualey & Rodack, LLP | 代理人 | McClure, Qualey & Rodack, LLP |
| 主权项 | 1. A power supply device for providing a maintenance voltage at an output terminal to a system chip of a system comprising: a first battery for providing a battery voltage; a capacitor for storing a capacitor voltage; a charging circuit coupled to the capacitor; and a monitoring circuit for detecting the battery voltage and the capacitor voltage, wherein the monitoring circuit detects whether the battery voltage is less than a first threshold and whether the capacitor voltage is larger than a second threshold and generates a control signal according to the determination result, and wherein when the monitoring circuit detects that the battery voltage is less than the first threshold and the capacitor voltage is not larger than the second threshold, the monitoring circuit asserts the control signal to control the charging circuit to charge the capacitor; wherein when the monitoring circuit detects that the battery voltage is less than the first threshold and the capacitor voltage is larger than the second threshold, the monitoring circuit de-asserts the control signal to control the charging circuit not to charge the capacitor. | ||
| 地址 | New Taipei TW | ||