发明名称 |
Method of regulating the supply voltage of a load and related voltage regulator |
摘要 |
The method is for regulating the supply voltage of a load via a switching voltage regulator having an inductor driven by at least a power switch for delivering current to an output capacitor having a certain parasitic series resistance, connected between the output node of the regulator and ground and to an electric load eventually connected in parallel to the output capacitor. The method includes establishing a reference voltage, generating a comparison signal as the sum of a first voltage signal proportional to the current circulating in the inductor and of a second voltage signal depending on the difference between the output voltage and the reference voltage and on the first voltage signal. The comparison signal is compared with at least a threshold for generating a logic signal that switches between an active state and an inactive state and viceversa each time that the threshold is crossed, and the turn on or the turn off of the switch is controlled as a function of the state of the logic signal.
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申请公布号 |
US6894471(B2) |
申请公布日期 |
2005.05.17 |
申请号 |
US20030449821 |
申请日期 |
2003.05.30 |
申请人 |
ST MICROELECTRONICS S.R.L. |
发明人 |
CORVA GIULIO;MARIANI ADALBERTO |
分类号 |
H02M3/156;(IPC1-7):G05F1/40 |
主分类号 |
H02M3/156 |
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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