发明名称 |
Power converter and operating method thereof |
摘要 |
A power converter and an operating method therefore are disclosed. The power converter includes an output stage, an input voltage detecting unit, and a pulse width modulation (PWM) unit. The output stage is coupled between an input terminal and a ground terminal. The input voltage detecting unit is used to detect an input voltage. The PWM unit is coupled to the output stage and the input voltage detecting unit and used to provide a PWM signal to the output stage. The PWM unit adjusts an on-time of a switch conducting signal of the PWM signal according to the input voltage and a default voltage. When the input voltage is lower than the default voltage, the PWM unit increases the on-time of the switch conducting signal and a period of the PWM signal. |
申请公布号 |
US9146575(B2) |
申请公布日期 |
2015.09.29 |
申请号 |
US201313798562 |
申请日期 |
2013.03.13 |
申请人 |
UPI SEMICONDUCTOR CORPORATION |
发明人 |
Shen Chien-Yuan |
分类号 |
G05F1/67;G05F5/00;H02M3/155;H02M1/00 |
主分类号 |
G05F1/67 |
代理机构 |
McClure, Qualey & Rodack, LLP |
代理人 |
McClure, Qualey & Rodack, LLP |
主权项 |
1. A power converter, comprising:
an output stage, coupled between an input terminal and a ground terminal; an input voltage detecting unit, for detecting an input voltage; and a pulse width modulation (PWM) unit, coupled to the output stage and the input voltage detecting unit, for providing a PWM signal to the output stage; wherein the PWM unit adjusts an on-time of a switch conducting signal of the PWM signal according to the input voltage and a default voltage, when the input voltage is lower than the default voltage, the PWM unit increases the on-time of the switch conducting signal and a period of the PWM signal. |
地址 |
Zhubei, Hsinchu County TW |