公开(公告)号：US20150241889A1

公开(公告)日：2015-08-27

申请号：US14631852

申请日：2015-02-26

Applicant: VIA Telecom, Inc.

Inventor： Ping-Hsing Chen ,  Ming-Yi Yu

IPC: G05F1/46 ,  H03K3/037 ,  G05F1/614 ,  H03K3/012

CPC classification number: H03K19/0016 ,  G05F1/468 ,  G05F1/67

Abstract: A reference voltage generating device including a reference voltage source, a charge supplying source, a first switch, a second switch, a charge storage unit and a logic unit is provided. First terminals of the first and second switches are respectively coupled to the output terminal of the reference voltage source and the charge supplying source. When a power on reset signal is received, the first switch is turned off and the second switch is turned on, such that the charge supplying source quickly charges the charge storage unit. When the output voltage is greater than or equal to the reference voltage, the first switch is turned on and the second switch is turned off, such that the reference voltage source maintains the output voltage to the reference voltage.

Abstract translation: 提供了包括参考电压源，充电供应源，第一开关，第二开关，电荷存储单元和逻辑单元的参考电压产生装置。 第一和第二开关的第一端子分别耦合到参考电压源和电荷源的输出端。 当接收到上电复位信号时，第一开关被断开，第二开关导通，使得充电提供源快速地对电荷存储单元充电。 当输出电压大于或等于参考电压时，第一开关导通，第二开关断开，使得参考电压源保持输出电压为参考电压。