公开(公告)号：US08928248B2

公开(公告)日：2015-01-06

申请号：US13762947

申请日：2013-02-08

Applicant: Panasonic Corporation

Inventor： Takuya Ishii ,  Takeshi Azuma

IPC: H05B37/02 ,  G05F1/618 ,  H02M3/158 ,  H05B33/08 ,  H02M1/00

CPC classification number: G05F1/618 ,  H02M3/1582 ,  H02M2001/0009 ,  H05B33/0818 ,  H05B37/02

Abstract: Provided is a step up/down converter, in which the inductor current can be easily detected by a simple configuration in any connecting mode of the switches. This comprises a first switch, one end of which is connected to an input power source, and the other end of which is connected to one end of the inductor, a second switch, one end of which is connected to the one end of the inductor, and the other end of which is connected to a reference potential applying unit, a third switch and a fourth switch, one end of which is connected to the other end of the inductor; a capacitor circuit element, connected between the other end of the third switch and the other end of the fourth switch, and configured to generate an output voltage for applying to a load, a detecting resistor, connected between the other end of the second switch and the other end of the third switch, and configured to detect an inductor current flowing through the inductor, and a control circuit configured to perform control from the first switch to the fourth switch based on the inductor current detected by the detecting resistor.

Abstract translation: 提供了一种升压/降压转换器，其中可以通过开关的任何连接模式中的简单配置容易地检测电感器电流。 这包括第一开关，其一端连接到输入电源，另一端连接到电感器的一端;第二开关，其一端连接到电感器的一端 并且其另一端连接到参考电位施加单元，第三开关和第四开关，其一端连接到电感器的另一端; 电容器电路元件，连接在第三开关的另一端和第四开关的另一端之间，并且被配置为产生用于施加到负载的输出电压，检测电阻器，连接在第二开关的另一端和 第三开关的另一端，并且被配置为检测流过电感器的电感器电流;以及控制电路，被配置为基于由检测电阻器检测的电感电流来执行从第一开关到第四开关的控制。