发明名称 |
Switching regulator control method |
摘要 |
A control method for preventing an output voltage of a buck switching regulator from falling when an input voltage of the buck switching regulator falls includes: converting the input voltage into a charging current; determining a duty cycle of the buck switching regulator according to the charging current and the output voltage; and adjusting a switching frequency of a pulse width modulation signal in the buck switching regulator when the input voltage falls to a specific voltage and an off time of the pulse width modulation signal reaches a minimum value, in order to change the duty cycle to prevent the output voltage from falling. |
申请公布号 |
US9110482(B2) |
申请公布日期 |
2015.08.18 |
申请号 |
US201313892325 |
申请日期 |
2013.05.13 |
申请人 |
Anpec Electronics Corporation |
发明人 |
Kuo Yueh-Lung;Chen Chih-Yuan |
分类号 |
G05F1/40;G05F3/08 |
主分类号 |
G05F1/40 |
代理机构 |
|
代理人 |
Hsu Winston;Margo Scott |
主权项 |
1. A control method for preventing an output voltage of a buck switching regulator from falling when an input voltage of the buck switching regulator falls, the control method comprising:
converting the input voltage into a charging current; determining a duty cycle of the buck switching regulator according to the charging current and the output voltage; and adjusting a switching frequency of a pulse width modulation signal in the buck switching regulator when the input voltage falls to a specific voltage and an off time of the pulse width modulation signal reaches a minimum value, in order to change the duty cycle to prevent the output voltage from falling. |
地址 |
Hsinchu Science Park, Hsin-Chu TW |