发明名称 |
Power Source Connection Circuit |
摘要 |
There is provided a power source connection circuit, when a switch having a low dielectric strength is employed, capable of preventing excessive power consumption when the switch between an input terminal and an output terminal is turned off, and also discharging electric charges accumulated in a gate of the switch. A power source connection circuit includes a MOS switch connected to an output terminal; a step-up circuit for supplying electric charges to a gate of the MOS switch; an electric-charge discharging unit coupled between the gate and a ground terminal; and a comparator for comparing a voltage of the output terminal with a reference voltage, wherein the electric-charge discharging unit includes a rectifier unit coupled between the gate and the ground terminal, and a switch coupled in series with the rectifier unit between the gate and the ground terminal to receive an output signal of the comparator at a gate. |
申请公布号 |
US2014368255(A1) |
申请公布日期 |
2014.12.18 |
申请号 |
US201314376172 |
申请日期 |
2013.02.22 |
申请人 |
Asahi Kasei Microdevices Corporation |
发明人 |
Hayasaka Naoto |
分类号 |
H03K17/08;H03K17/687 |
主分类号 |
H03K17/08 |
代理机构 |
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代理人 |
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主权项 |
1. A power source connection circuit comprising:
a MOS switch having a drain connected to an input terminal and a source connected to an output terminal; a step-up circuit for supplying electric charges to a gate of the MOS switch; an electric-charge discharging unit coupled between the gate and a ground terminal; and a comparator for comparing a voltage of the output terminal with a reference voltage, wherein the electric-charge discharging unit includes: a rectifier unit coupled between the gate and the ground terminal; and a switch coupled in series with the rectifier unit between the gate and the ground terminal to receive an output signal of the comparator at a control terminal of the switch. |
地址 |
Tokyo JP |