发明名称 |
CIRCUIT AND METHOD FOR DETECTING DUTY RATIO OF PWM SIGNAL |
摘要 |
There are provided a circuit and a method for detecting a duty ratio of a PWM signal. The circuit includes: a counting unit counting a PWM signal; a detection indication determining unit determining whether a detection indication signal indicating a start of detection of the duty ratio of the PWM signal has been input; an edge detecting unit detecting a preset PWM edge of the PWM signal; and a duty calculating unit calculating the duty ratio of the PWM signal using a count value during a section from a k-th point in time (T(k)) (k being a natural number of 1 or more) at which the PWM edge is detected after it is determined that the detection indication signal has been input to a k+1-th point in time (T(k+1)) at which the PWM edge is detected after it is subsequently determined that the detection indication signal has been input. |
申请公布号 |
US2014117898(A1) |
申请公布日期 |
2014.05.01 |
申请号 |
US201313829805 |
申请日期 |
2013.03.14 |
申请人 |
SAMSUNG ELECTRO-MECHANICS CO., LTD. |
发明人 |
HAN SU YEON;YOUM JUNG EUN;GU BON YOUNG |
分类号 |
H02P7/00 |
主分类号 |
H02P7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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