发明名称 |
DC power supply with output voltage detection and control |
摘要 |
A series circuit including a capacitor and a resistor for detecting variation of the output voltage of dc power supply is further provided. During startup, a charge current corresponding to the rising rate of the output voltage flows through the series circuit. This reduces the base current of the power transistor to suppress the rising rate to suppress overshoot and undershoot. A clamp circuit is provided to the differential amplifier for detecting the error voltage. This prevents the saturation in the differential amplifier or limit the voltage variation amplitude to accelerate the operation of the operational amplifier and suppress undershoot. A delay circuit for disabling to driving circuit for the power transistor for the initial interval may be further provided to suppress the initial rapid rise of the output voltage.
|
申请公布号 |
US6531855(B2) |
申请公布日期 |
2003.03.11 |
申请号 |
US20010892534 |
申请日期 |
2001.06.28 |
申请人 |
DENSO CORPORATION |
发明人 |
MIKI TAKESHI;NAGATA JUNICHI;BAN HIROYUKI |
分类号 |
G05F1/56;G05F1/575;(IPC1-7):G05F1/40 |
主分类号 |
G05F1/56 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|