发明名称 |
PFC CONTROLLER, SWITCHING REGULATOR AND POWER SUPPLY CIRCUIT |
摘要 |
A PFC counter which controls a switching element of voltage step-up chopper circuits arranged in parallel has a circuit (SLOG) generating a switch signal (GD_S) whose phase is shifted from that of a switch signal of one of the switching elements. This circuit has a first counter (COUNTM) which counts clock signals by a cycle unit of one of the switch signals; a second counter (COUNTS) which counts clock signals by a cycle unit having a predetermined phase difference with respect to one of the switch signals; and a first register (REG1) which holds a value counted by the first counter corresponding to a high-level period of one of the switch signals. |
申请公布号 |
US2010097041(A1) |
申请公布日期 |
2010.04.22 |
申请号 |
US20070440737 |
申请日期 |
2007.09.13 |
申请人 |
RENESAS TECHNOLOGY CORP. |
发明人 |
AYUKAWA KAZUHITO;TAZAWA TOMOHIRO |
分类号 |
G05F1/613 |
主分类号 |
G05F1/613 |
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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