Sanken Electric Co., Ltd.

Junichi Takada

Toshihiro Nakano

Mitsutomo Yoshinaga

Osamu Ohtake

Koki Imai

Koichi Shiotsu

Satoshi Funakoshi

A power conversion device according to an embodiment may include: an output circuit configured to perform a power conversion operation of converting input power into an output power and outputting the output power; and a microcomputer configured to control the power conversion operation by the output circuit with power supplied from an internal power source of the output circuit, wherein the microcomputer outputs a status signal notifying whether the microcomputer is in a power shutdown permit period or a power shutdown inhibit period, and the output circuit includes a power supply stop circuit configured, when receiving the operation stop signal that instructs to stop the power conversion operation, to stop the power supply from the internal power source to the microcomputer on a condition where the status signal indicates that the microcomputer is in the power shutdown permit period.

Power conversion device

A power conversion device according to one or more embodiments may include: a microcomputer; and an output circuit controlled by the microcomputer, including an output unit that converts an input power into a predetermined power and outputs the predetermined power, an internal power source that supplies a power source to the microcomputer, a driver that drives the output unit by a signal from the microcomputer, and a microcomputer stop transition unit that, when an operation of the power conversion device is stopped, outputs a microcomputer stop signal to the microcomputer and causes an operation of the microcomputer to transition to a stop state. In one or more embodiments, after the microcomputer stop transition unit causes the operation of the microcomputer to transition to a stop state, the microcomputer or the output circuit may stop an output of the internal power source.

Power conversion device and control circuit

A device and method for controlling a power converter. The device includes an activation terminal configured to obtain a first voltage based on the input voltage; a controlling terminal configured to obtain a second voltage based on the output voltage; and a digital controller configured to obtain a driving power based on the first voltage and/or the second voltage; the digital controller is configured to obtain the driving power at least based on the first voltage when the power converter is stopped. Therefore, a sufficient driving power can be provided for the digital controller even when the power converter is stopped.

Device and method for converting input voltage to output voltage

A power conversion device may include: a microcomputer; and an output circuit controlled by the microcomputer, including an output unit that converts an input power into a predetermined power and outputs the predetermined power, an internal power source that supplies a power source to the microcomputer, a driver that drives the output unit by a signal from the microcomputer, and a microcomputer stop transition unit that, when an operation of the power conversion device is stopped, outputs a microcomputer stop signal to the microcomputer and causes an operation of the microcomputer to transition to a stop state. In one or more embodiments, after the microcomputer stop transition unit causes the operation of the microcomputer to transition to a stop state, the microcomputer or the output circuit may stop an output of the internal power source.

Growing community of inventors

Kawagoe, Japan

Junichi Takada