公开(公告)号：EP1746712A1

公开(公告)日：2007-01-24

申请号：EP05425515.3

申请日：2005-07-19

Applicant: STMicroelectronics S.r.l.

Inventor： Marino, Filippo ,  Minieri, Marco ,  Di Blasi, Giuseppe Maria ,  Boscaino, Valeria

IPC: H02M3/157

CPC classification number: H02M3/157

Abstract: The control circuit for a DC/DC converter (11) has a linear-control loop (12, 14, 15), which receives a quantity to be controlled (V 0 ) and a first reference quantity (V r1 ), and generates a modulation value (DC1). A nonlinear modulation unit (13, 18-21) is activated in presence of a variation of the quantity to be controlled (V 0 ) higher than a preset intervention threshold (Vth1) and modifies in a nonlinear way the reference quantity supplied to the linear-control loop. In the case of large variation and of preset sign of the quantity to be controlled, the linear-control loop is deactivated, a signal for switching-off of the DC/DC converter (11) is initially generated, and then a false steady-state-modulation value (DC2) is supplied to the DC/DC converter.

Abstract translation: 用于DC / DC转换器（11）的控制电路具有接收待控制量（V 0）和第一参考量（V r1）的线性控制回路（12,14,15），并产生 调制值（DC1）。 存在要控制的量（V 0）高于预设介入阈值（Vth1）的变化的非线性调制单元（13,18-21）被激活，并以非线性方式修改提供给线性的参考量 控制循环。 在大的变化和要控制的量的预设符号的情况下，线性控制回路被去激活，最初产生用于DC / DC转换器（11）关断的信号，然后， 状态调制值（DC2）被提供给DC / DC转换器。