发明名称 |
Alternating current (AC) line voltage determination |
摘要 |
In various embodiments, there is provided a method comprising receiving a waveform; rectifying the waveform to generate a rectified waveform; comparing the rectified waveform with a first voltage to generate a first compare signal, wherein a first edge of the first compare signal occurs at a first time when an instantaneous value of the rectified waveform becomes higher than the first voltage; comparing the rectified waveform with a second voltage to generate a second compare signal, wherein a first edge of the second compare signal occurs at a second time when the instantaneous value of the rectified waveform becomes higher than the second voltage; and based at least in part on the first time and the second time, estimating a voltage of the waveform. |
申请公布号 |
US9185760(B1) |
申请公布日期 |
2015.11.10 |
申请号 |
US201213648455 |
申请日期 |
2012.10.10 |
申请人 |
Marvell International Ltd. |
发明人 |
Choi Jinho;Peng Hao;Zhang Wanfeng;Doan Tuyen |
分类号 |
H05B33/02;H05B33/08;H02M3/335 |
主分类号 |
H05B33/02 |
代理机构 |
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代理人 |
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主权项 |
1. A method comprising:
receiving a waveform; rectifying the waveform to generate a rectified waveform; comparing the rectified waveform with a first voltage to generate a first compare signal, wherein a first edge of the first compare signal occurs at a first time when an instantaneous value of the rectified waveform becomes higher than the first voltage; comparing the rectified waveform with a second voltage to generate a second compare signal, wherein a first edge of the second compare signal occurs at a second time when the instantaneous value of the rectified waveform becomes higher than the second voltage; and based at least in part on the first time and the second time, estimating a voltage of the waveform, wherein the first voltage is a direct current (DC) voltage having a first positive value, wherein the second voltage is a DC voltage having a second positive value, and wherein the first positive value is different from the second positive value. |
地址 |
Hamilton BM |