US 11,309,794 B2Granted

Switching power supply device

AssigneeHitachi Astemo, Ltd.

InventorsNaoya Takahashi, Kenji Kubo, Takuma Ono

Life of this patent

Estimating the term…

Loading patent…

Abstract

There is provided a switching power supply device which has a high voltage control resolution. A switching power supply device according to the present invention includes: a power conversion circuit which includes a switching element; and a control circuit unit which outputs a driving pulse to the switching element based on an output voltage command value and an output voltage value of the power conversion circuit, and the control circuit unit changes a switching cycle and outputs a driving pulse based on a difference between a calculation value of an operation amount based on the output voltage command value and the output voltage value, and a setting value of the operation amount.

Claims11

Dependent claims

A switching power supply device comprising:

a power conversion circuit which includes a switching element;
and
a control circuit unit which outputs a driving pulse to the switching element based on an output voltage command value of the power conversion circuit and an output voltage value of the power conversion circuit, wherein
the control circuit unit is configured to:
calculate a calculation value of a manipulated variable based on an output voltage command value and the output voltage value,
calculate a setting value of the manipulated variable which is converted from the calculation value of the manipulated variable into a clock signal cycle unit,
decrease a switching cycle of the switching element when the setting value of the manipulated variable is less than the calculation value of the manipulated variable, and
increase the switching cycle of the switching element when the setting value of the manipulated variable is greater than the calculation value of the manipulated variable.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/616,606Filed 12 Apr 2018
Priority: JP JP2017-10732331 May 2017
Published: US 2020/0186032 A111 Jun 2020
Granted: 19 Apr 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

H03K 7/08
Modulating pulses with a continuously-variable modulating signal: duration or width modulation ; Duty cycle modulation
H02M 3/156
Using semiconductor devices only: with automatic control of output voltage or current, e.g. switching regulators
H02M 3/157
With automatic control of output voltage or current, e.g. switching regulators: with digital control
H02M 3/158
With automatic control of output voltage or current, e.g. switching regulators: including plural semiconductor devices as final control devices…

Family

US 2020/0186032 A1Pre-grant publication · published 11 Jun 2020
US 11,309,794 B2This patent

From the US filing history. Foreign family members aren’t listed.

Timeline

Citations

Open elsewhere

Building an agent or pulling many patents? Use the API or MCP server instead of scraping pages. Get an API key