Power converter and method of control thereof
US-2018226895-A1 · Aug 9, 2018 · US
DC-DC converter
US10374518B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10374518-B2 |
| Application number | US-201816042726-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 23, 2018 |
| Priority date | Jul 24, 2017 |
| Publication date | Aug 6, 2019 |
| Grant date | Aug 6, 2019 |
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- Title
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Abstract
Official abstract text for this publication.
A direct current (DC)-DC converter includes: a transformer; a half bridge circuit provided on a primary side of the transformer; a synchronous rectification circuit provided on a secondary side of the transformer; and a controller configured to switch a power semiconductor device for rectification of the synchronous rectification circuit at a duty ratio and a phase corresponding to an input voltage of the half bridge circuit and an output current of the synchronous rectification circuit.
First claim
Opening claim text (preview).
What is claimed is: 1. A direct current (DC)-DC converter comprising: a transformer; a half bridge circuit provided on a primary side of the transformer; a synchronous rectification circuit provided on a secondary side of the transformer; and a controller configured to switch a power semiconductor device for rectification of the synchronous rectification circuit at a duty ratio and a phase corresponding to an input voltage of the half bridge circuit and an output current of the synchronous rectification circuit, wherein the controller is configured to determine the duty ratio at a time of switching the power semiconductor device for rectification with reference to a table of duty ratios in which a combination of the input voltage and the output current and the duty ratio corresponding to the combination are mapped to each other, and wherein the duty ratios in the table increase as the input voltage becomes higher. 2. The DC-DC converter according to claim 1 , wherein the controller is configured to determine the phase at the time of switching the power semiconductor device for rectification with reference to a table of phases in which a combination of the input voltage and the output current and a phase corresponding to the combination are mapped to each other. 3. The DC-DC converter according to claim 1 , wherein the controller is configured to refer to the table per control cycle of switching of the power semiconductor device for rectification with respect to at least one of two power semiconductor devices for rectification of the synchronous rectification circuit. 4. The DC-DC converter according to claim 1 , wherein the phase is defined by a phase delay with respect to a phase of switching of the power semiconductor device for inverse conversion of the half bridge circuit. 5. The DC-DC converter according to claim 1 , wherein the controller is configured to switch each of two power semiconductor devices to rectify the synchronous rectification circuit at a same duty ratio.
Assignees
Inventors
Classifications
- H02M3/33592Primary
having a synchronous rectifier circuit or a synchronous freewheeling circuit at the secondary side of an isolation transformer · CPC title
Electricity · mapped topic
having several active switching elements (H02M3/3353 takes precedence) · CPC title
Resonant DC/DC converters · CPC title
Half-bridge at primary side of an isolation transformer · CPC title
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Frequently asked questions
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- What does patent US10374518B2 cover?
- A direct current (DC)-DC converter includes: a transformer; a half bridge circuit provided on a primary side of the transformer; a synchronous rectification circuit provided on a secondary side of the transformer; and a controller configured to switch a power semiconductor device for rectification of the synchronous rectification circuit at a duty ratio and a phase corresponding to an input vol…
- Who is the assignee on this patent?
- Calsonic Kansei Corp, Univ Hokkaido Nat Univ Corp, Univ Utsunomiya
- What technology area does this patent fall under?
- Primary CPC classification H02M3/33592. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Aug 06 2019 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 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).