Synchronous rectifier

• US 9,595,882 B2
• Filed: 10/31/2012
• Issued: 03/14/2017
• Est. Priority Date: 10/31/2011
• Status: Active Grant

• Current Assignee: Fronius International GmbH (G&K Privatstiftung)
• Original Assignee: Fronius International GmbH (G&K Privatstiftung)
• Inventors: Artelsmair, Bernhard, Schultschik, Christoph, Neuboeck, Johannes, Wolfsgruber, Stefan
• Primary Examiner(s): ROSARIO BENITEZ, GUSTAVO A
• Application Number:
  US14/354,963
• Publication Number:
  US 20140321184A1
• Time in Patent Office: 1,595 Days
• US Class Current: 1/1
• CPC Class Codes: B23K 11/115 by means of two electrodes placed opposite one another on both sides of the welded parts
• CPC Class Codes: B23K 11/241 Electric supplies B23K11/248 takes precedence
• CPC Class Codes: B23K 11/314 Spot welding guns, e.g. mounted on robots
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
• CPC Class Codes: H02M 3/33592 having a synchronous rectifier circuit or a synchronous freewheeling circuit at the secondary side of an isolation transformer
• CPC Class Codes: H02M 7/04 by static converters
• CPC Class Codes: Y02B 70/10 Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
• CPC Class Codes: Y02P 70/10 Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Abstract

The invention relates to a synchronous rectifier (16) for integration into a power source (10) in order to provide a direct current, in particular in a cube or ashlar-shaped unit of a heavy-current transformer (12), comprising circuit elements (24), an actuation circuit (17) for actuating the circuit elements (24) and a supply circuit (48), wherein a printed circuit board (35) with conductor tracks and connection surfaces is provided for receiving electronic components. For reduction of losses and improvement of efficiency, the circuit elements (24), the actuation circuit (17) and the supply circuit (48) are arranged on the circuit board (35) for the autonomous operation thereof, wherein several openings (37), which are arranged in parallel and in series, are provided on the circuit board (35) for receiving protrusions (36) of a contact plate (29), above which openings (37) the circuit elements (24) are arranged and are connected or soldered and can be contacted with the protrusions (36) of the contact plate (29).

Claims

1. A synchronous rectifier for integration into a power source in order to provide a direct current, in particular in a cube or ashlar-shaped unit of a heavy-current transformer, the synchronous rectifier comprising circuit elements, an actuation circuit for actuating the circuit elements and a supply circuit,

wherein a printed circuit board with conductor tracks and connection surfaces is provided for receiving electronic components, the printed circuit board having a first side and a back side opposite to the first side,

wherein the circuit elements, the actuation circuit and the supply circuit are arranged on the printed circuit board,

wherein several openings arranged in rows and in columns are provided on the printed circuit board for receiving protrusions of a contact plate, and

wherein the circuit elements are arranged and connected or soldered to the printed circuit board above said openings, and

wherein the printed circuit board is mounted onto the contact plate so that the protrusions protrude through said openings so that the back side of the printed circuit board can be connected or soldered with the contact plate and the circuit elements arranged on the first side can be connected or soldered to the protrusions on the contact plate.

2. The synchronous rectifier according to claim 1, wherein the actuation circuit is arranged on both sides of the circuit elements which are arranged on the circuit beard in parallel and in series.

3. The synchronous rectifier according to claim 1, wherein the actuation circuit is connected to at least one sensor, in particular a current transducer, integrated in the heavy-current transformer.

4. The synchronous rectifier according to claim 1, wherein the supply circuit is formed in order to produce correspondingly heavy switching currents, preferably to produce switching currents between 800 A and 1500 A, in particular 1000 A, and to provide the electronic components with a corresponding supply voltage.

5. The synchronous rectifier according to claim 1, wherein a data communication circuit is provided in order to transfer data wirelessly, in particular inductively, magnetically or via short wavelength, ultra high frequency radio waves.

6. The synchronous rectifier according to claim 1, wherein on one side of the circuit board a solderable surface is provided over the entire face in order to be soldered to the contact plate.