Switching power supply device
US-2021028705-A1 · Jan 28, 2021 · US
Multi-phase converter including controller to calculate estimated value
US11264907B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11264907-B2 |
| Application number | US-202016811521-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 6, 2020 |
| Priority date | Mar 20, 2019 |
| Publication date | Mar 1, 2022 |
| Grant date | Mar 1, 2022 |
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- Title
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Abstract
Official abstract text for this publication.
A multi-phase converter has a plurality of voltage converter circuits connected in parallel; current sensors provided in the voltage converter circuits respectively; and a controller configured to calculate an estimated value of a total input current inputted to the multi-phase converter. The controller may be configured to output a notification signal that indicates an abnormality in one of the current sensors when a difference between a total sum of measured values of all the current sensors and the estimated value is outside a predetermined allowable range.
First claim
Opening claim text (preview).
What is claimed is: 1. A multi-phase converter comprising: a plurality of voltage converter circuits connected in parallel; current sensors provided in the voltage converter circuits respectively; and a controller configured to calculate an estimated value of a total input current inputted to the multi-phase converter, the controller configured to output an abnormality notification signal indicating abnormality in one of the current sensors when a difference between a total sum of measured values of all the current sensors and the estimated value is outside a predetermined allowable range, wherein when the difference between the total sum and the estimated value is outside the allowable range, the controller is configured to: calculate a first value obtained by multiplying the estimated value by ((N−1)/N), where N is a number of the voltage converter circuits; calculate a plurality of second values obtained by subtracting each of the measured values of the current sensors from the total sum; and identify, as the current sensor in which the abnormality occurs, one of the current sensors that corresponds to the measured value subtracted at a time of calculating the second value that provides a smallest absolute value among absolute values of differences between the first value and each of the second values. 2. The multi-phase converter of claim 1 , wherein the controller is configured to calculate the estimated value by dividing input power to the multi-phase converter or output power of the multi-phase converter by an input voltage to the multi-phase converter.
Assignees
Inventors
Classifications
Devices or circuits for detecting current in a converter · CPC title
Means for protecting converters other than automatic disconnection · CPC title
- H02M3/155Primary
using semiconductor devices only · CPC title
- H02M3/1584Primary
with a plurality of power processing stages connected in parallel · CPC title
without using an external clock (H02M3/158 takes precedence) · CPC title
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- What does patent US11264907B2 cover?
- A multi-phase converter has a plurality of voltage converter circuits connected in parallel; current sensors provided in the voltage converter circuits respectively; and a controller configured to calculate an estimated value of a total input current inputted to the multi-phase converter. The controller may be configured to output a notification signal that indicates an abnormality in one of th…
- Who is the assignee on this patent?
- Denso Corp
- What technology area does this patent fall under?
- Primary CPC classification H02M3/155. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 01 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).