公开(公告)号：EP1693960A1

公开(公告)日：2006-08-23

申请号：EP05425080.8

申请日：2005-02-18

Applicant: STMicroelectronics S.r.l.

Inventor： Pannizzo, Ivo ,  Pulvirenti, Francesco

IPC: H03K3/0231

CPC classification number: H03K4/502 ,  H03K3/0231

Abstract: The present invention describes an electric circuit comprising a circuit path (1) from a first reference voltage (VDD) to a second reference voltage (GND) lower than the first reference voltage. The path (1) comprising means (2) for supplying current (I1), at least one capacitor (C1), first switching means (T1) suitable for connecting or disconnecting the capacitor (C1) with respect to the means (2) for supplying current (I1). The first switching means (T1) have a given triggering value (Vth) and the electric circuit comprises second switching means (T2) placed in parallel to the at least one capacitor (C1) and control means (3) suitable for acting on the first (T1) and second (T2) switching means for controlling the charging and discharging of the at least one capacitor (C1). The control means (3) comprise further means (4) operable during the charging of the capacitor (C1) and suitable for acting on the first switching means (T1) for blocking the charging of the capacitor (C1) when the voltage value (Vc1) at its terminals reaches a predefined voltage value (Vref). The predefined voltage value is lower than the triggering voltage (Vth) of the first switching means (T1) and higher than the second reference voltage (GND).

Abstract translation: 本发明描述了一种电路，包括从第一参考电压（VDD）到低于第一参考电压的第二参考电压（GND）的电路路径（1）。 所述路径（1）包括用于提供电流（I1）的装置（2），至少一个电容器（C1），适于相对于所述装置（2）连接或断开所述电容器（C1）的第一开关装置（T1） 提供电流（I1）。 第一开关装置（T1）具有给定的触发值（Vth），并且电路包括与至少一个电容器（C1）并联放置的第二开关装置（T2）和适于作用在第一开关装置 （T1）和第二（T2）开关装置，用于控制至少一个电容器（C1）的充电和放电。 控制装置（3）还包括可在电容器（C1）充电期间操作的另外的装置（4），并适于在第一开关装置（T1）作用以阻止电容器（C1）的充电，当电压值（Vc1 ）达到预定电压值（Vref）。 预定电压值低于第一开关装置（T1）的触发电压（Vth）并且高于第二参考电压（GND）。

公开(公告)号：EP1696542A1

公开(公告)日：2006-08-30

申请号：EP05425108.7

申请日：2005-02-28

Applicant: STMicroelectronics S.r.l. ,  Dora S.p.A.

Inventor： Pannizzo, Ivo ,  Pulvirenti, Francesco

IPC: H02M3/07

CPC classification number: H02M3/073

Abstract: The present invention describes a voltage multiplier receiving a constant voltage (Vs). The multiplier comprises means (1) suitable for generating at least one first (CK) and one second (XCK) signal in phase opposition between each other and at least one charging section (100, Ai). The latter comprises a first capacitor (C1) of charge transfer having a first terminal coupled to the first signal (CK) and a second capacitor (C2) of charge transfer having a first terminal coupled with the second signal (XCK). The two capacitors (C1, C2) of charge transfer comprise respective parasitic capacitances (Cp1, Cp2) placed between their first terminal and a reference voltage (GND) and the at least one charging section (100, Ai) is coupled with said constant voltage (Vs) and is suitable for producing in output a multiple voltage of the constant voltage. The multiplier comprises output means (OUT, Cs) receiving said multiple voltage of the input voltage and being suitable for supplying a substantially constant output voltage (Vout) which is multiple of the constant voltage (Vs). The multiplier comprises means (10) suitable for connecting the parasitic capacitances (Cp1, Cp2) to carry out the charge transfer from one parasitic capacitance to the other.

Abstract translation: 本发明描述了接收恒定电压（Vs）的电压倍增器。 乘法器包括适于产生彼此相对的至少一个第一（CK）和一个第二（XCK）信号的装置（1）和至少一个充电部分（100A）。 后者包括电荷转移的第一电容器（C1），其具有耦合到第一信号（CK）的第一端子和具有与第二信号（XCK）耦合的第一端子的电荷转移的第二电容器（C2）。 电荷转移的两个电容器（C1，C2）包括放置在它们的第一端子和参考电压（GND）之间的相应的寄生电容（Cp1，Cp2），并且至少一个充电部分（100，Ai）与所述恒定电压 （Vs），并且适用于在输出中产生恒定电压的多个电压。 乘法器包括接收输入电压的多个电压的输出装置（OUT，Cs），并且适于提供恒定电压（Vs）的倍数的基本恒定的输出电压（Vout）。 乘法器包括适于连接寄生电容（Cp1，Cp2）的装置（10），以执行从一个寄生电容到另一个寄生电容的电荷转移。