发明名称 |
Charge-pump type, voltage-boosting device with reduced ripple, in particular for non-volatile flash memories |
摘要 |
Voltage-boosting device having a supply input receiving a supply voltage, and a high-voltage output. The device is formed by a plurality of charge-pump stages series-connected between the supply input and the high-voltage output. Each charge-pump stage has a respective enabling input receiving an enabling signal. A control circuit formed by a plurality of comparators is connected to the high-voltage output and generates the enabling signals on the basis of the comparison between the voltage on the high-voltage output and a plurality of reference voltages, one for each comparator. The charge-pump stages are grouped into sets of stages, and the stages belonging to a same set receive a same enabling signal; thus, as many comparators as there are sets of stages are present.
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申请公布号 |
US7532061(B2) |
申请公布日期 |
2009.05.12 |
申请号 |
US20060437268 |
申请日期 |
2006.05.19 |
申请人 |
RAGONE GIANCARLO;SANGALLI MIRIAM;CRIPPA LUCA;MICHELONI RINO |
发明人 |
RAGONE GIANCARLO;SANGALLI MIRIAM;CRIPPA LUCA;MICHELONI RINO |
分类号 |
G05F1/10;G05F3/02 |
主分类号 |
G05F1/10 |
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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