公开(公告)号：US20040066239A1

公开(公告)日：2004-04-08

申请号：US10612335

申请日：2003-07-02

Applicant: STMICROELECTRONICS S.A.

Inventor： Adalberto Mariani ,  Giulio Corva

IPC: H03L007/00

CPC classification number: H02M3/156 ,  G01R23/09 ,  H03K9/06

Abstract: A frequency/signal converter is provided that receives an input clock signal and generates an output signal. The converter includes a first circuit that receives the input clock signal and generates first and second logic signals that are complementary with one another, a loop circuit that includes a first circuit line and a second circuit line that are each coupled between a first supply voltage and a second supply voltage, and an integrator device. A current proportional to the output signal of the converter flows in the loop circuit. The first and second circuit lines include first and second capacitive elements and first and second switches for interrupting current flow into the first and second capacitive elements, respectively. The first and second switches are controlled by the first and second logic signals, respectively. The first and second circuit lines are alternatively coupled to an input terminal of the integrator device in order to obtain a substantially constant voltage signal at the input terminal of the integrator device, and the integrator device provides the output signal of the converter. Also provided is a switching regulator for providing a regulated voltage to a load.

Abstract translation: 提供了一种接收输入时钟信号并产生输出信号的频率/信号转换器。 转换器包括第一电路，其接收输入时钟信号并产生彼此互补的第一和第二逻辑信号;环路电路，包括第一电路线和第二电路线，每个耦合在第一电源电压和 第二电源电压和积分器装置。 与转换器的输出信号成比例的电流在回路中流动。 第一和第二电路线包括第一和第二电容元件以及分别用于中断流入第一和第二电容元件的电流的第一和第二开关。 第一和第二开关分别由第一和第二逻辑信号控制。 第一和第二电路线交替地耦合到积分器装置的输入端，以便在积分器装置的输入端获得基本恒定的电压信号，积分器装置提供转换器的输出信号。 还提供了一种用于向负载提供调节电压的开关调节器。