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EP0929143A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Switching regulator

Assignee: Nihon Protector Co Ltd
•
Filing: 1998-11-03
•
Granted: —
•
Expires: 2018-11-03
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Abstract

Abstract A switching regulator includes: a boost chopper circuit A including a plurality of inductances (2, 3, 4 and 5) which are connected in parallel with a D.C. power supply (1) for boosting the D.C. power supply (1), a plurality of commutating diodes (6, 7, 8 and 9) which are connected to output sides of those inductances (2, 3, 4 and 5), respectively, a plurality of switching elements (10, 11, 12 and 13) for connecting the D.C. power supply (1) and nodes between the respective inductances (2 to 5) and the respective diodes (6 to 9) in a short-circuiting manner, and a smoothing capacitor (14) connected in series to a combined output section of those diodes (6 to 9); a control circuit (15) for controlling the on/off operation of those switching elements (10 to 13); and a load (16) connected in parallel with the smoothing capacitor (14). The plurality of switching elements (10 to 13) repeatedly operate while the operation of the plurality of switching elements (10 to 13) is sequentially delayed by a predetermined period of time.

Inventors

  • 👤 Setsuo c/o Nihon Protector Co. Ltd. Sakai

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-01 18:32
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/02; H02M3/04; H02M3/10; H02M3/145; H02M3/155; H02M3/156; H02M3/158; H02M3/1584; H02M3/1586; H02M1/00; H02M1/0067; H02M1/007; H02M3/22; H02M3/24; H02M3/28; H02M3/285

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 135 words
A switching regulator, comprising: a boost chopper circuit including a plurality of inductances connected in parallel with a D.C. power supply for boosting the D.C. power supply, a plurality of commutating diodes connected to output sides of said inductances, respectively, a plurality of switching elements for connecting said D.C. power supply and a node between each of said inductances and each of said diodes in a short-circuiting manner, and a smoothing capacitor connected in series to a combined output section of said plurality of diodes; a control circuit for controlling the on/off operation of said plurality of switching elements; and a load connected in parallel with said smoothing capacitor; wherein said plurality of switching elements repeatedly operate while the operation of said plurality of switching elements is sequentially delayed by a predetermined period of time.
Claim 2
Dependent Claim 36 words
A switching regulator as claimed in claim 1, wherein said control circuit comprises a PWM control circuit that controls the on-period of the plurality of switching elements to hold a voltage value of the load constant.
Claim 3
Dependent Claim 27 words
A switching regulator as claimed in claim 1 or 2, wherein said inductances comprise insulating flyback transformers each consisting of a primary winding and a secondary winding.
Claim 4
Dependent Claim 52 words
A switching regulator as claimed in any of claims 1 to 3, wherein said plurality of boost chopper circuits are connected in series, and all of said switching elements of said boost chopper circuits are connected to said single control circuit to control the on/off operation of all of said switching elements.

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