发明名称 |
METHOD AND CONTROL CIRCUIT FOR CONTROLLING PULSE WIDTH MODULATION |
摘要 |
The invention provides a method and a modulation circuit for pulse width modulation with feedback, wherein a pulse width modulated signal is provided on the basis of an input signal and a reference signal that is periodic and has a reference frequency. The pulse width modulated signal is provided in that an output signal is switched from a first voltage level to a second voltage level in dependence on a comparison between the input signal and the reference signal at least once in every cycle of the reference signal, and in that at least once at a fixed moment in time in every cycle the pulse width modulated signal is switched from the second voltage level to the first voltage level. Furthermore, a periodic correction signal is added for compensation of the switching from the second voltage level to the first voltage level in the pulse width modulated signal. |
申请公布号 |
EP2269302(A1) |
申请公布日期 |
2011.01.05 |
申请号 |
EP20090734104 |
申请日期 |
2009.04.22 |
申请人 |
HYPEX ELECTRONICS B.V. |
发明人 |
PUTZEYS, BRUNO, JOHAN, GEORGES |
分类号 |
H03F3/217;H03F1/32;H03F1/34;H03K7/08 |
主分类号 |
H03F3/217 |
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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