发明名称 |
SEMICONDUCTOR DEVICE AND POWER SUPPLY USING THE SAME |
摘要 |
A semiconductor device for control applied to a constant-voltage power supply device includes a digital-analog converter circuit which outputs a reference voltage corresponding to a value of a first register with taking an output voltage of a reference voltage source as a criterial reference voltage, and generates a control signal for driving a power semiconductor device based on an output voltage of an error amplifier which differentially amplifies a feedback voltage obtained by resistive-dividing on an output voltage of the constant-voltage power supply device and the reference voltage. An analog-digital converter circuit which converts the feedback voltage to a digital value with taking the output voltage of the constant-voltage power supply device as a reference voltage is provided, and based on the output, a value of a first register is corrected so as to offset an effect of an error in voltage dividing ratio of a voltage dividing resistor circuit.
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申请公布号 |
US2009243575(A1) |
申请公布日期 |
2009.10.01 |
申请号 |
US20090388819 |
申请日期 |
2009.02.19 |
申请人 |
AKIYAMA NOBORU;HASHIMOTO TAKAYUKI;HIRAO TAKASHI;TATENO KOJI;ISHIGAKI TAKUYA |
发明人 |
AKIYAMA NOBORU;HASHIMOTO TAKAYUKI;HIRAO TAKASHI;TATENO KOJI;ISHIGAKI TAKUYA |
分类号 |
G05F1/00 |
主分类号 |
G05F1/00 |
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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