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Synchronous Rectifier Bidirectional Current Sensor

A synchronous rectifier, bidirectional current technology, applied in the direction of measuring current/voltage, converting DC power input to DC power output, instruments, etc., can solve the problems of high-frequency radiation exposure and difficulty of wide-bandwidth amplifiers

Active Publication Date: 2016-12-14
THE BOEING CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With such small signals in a switching regulator (where the power stage radiates high-frequency noise), it is very difficult to make a current sensor that accurately measures current
Third, wide-bandwidth amplifiers with very high gain and high precision are exposed to high-frequency radiated and conducted exposures

Method used

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  • Synchronous Rectifier Bidirectional Current Sensor
  • Synchronous Rectifier Bidirectional Current Sensor
  • Synchronous Rectifier Bidirectional Current Sensor

Examples

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Embodiment Construction

[0020] The following detailed description is exemplary in nature and is not intended to limit the disclosure, or the application and uses of the embodiments of the disclosure. Descriptions of specific devices, techniques, and applications are provided as examples only. Modifications to the examples described herein will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other examples and applications without departing from the spirit and scope of the present disclosure. Furthermore, there is no intention to be bound by any expressed or implied theory presented in the preceding technical field, background, brief summary or the following detailed description. The present disclosure should be accorded scope consistent with the claims, and not limited to the examples described and shown herein.

[0021] Embodiments of the disclosure may be described herein in terms of functional and / or logical block components and various...

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Abstract

The invention discloses a method and device for bidirectional current sensing of a synchronous rectifier bidirectional converter system. A first current through the first synchronous rectifier is measured via the first transformer to provide a first signal. A second current through the second forced synchronous rectifier is measured via the second transformer to provide a second signal. DC restoring is performed on the first signal and the second signal respectively, thereby providing a first DC restored signal and a second DC restored signal. A first correction current is added to the first DC restored signal to generate a first corrected signal, and a second correction current is added to the second DC restored signal to generate a second corrected signal. The first corrected signal and the second corrected signal are summed to produce a combined signal.

Description

technical field [0001] Embodiments of the present disclosure relate generally to voltage and current sensors. More specifically, embodiments of the present disclosure relate to voltage and current sensors for bidirectional voltage converters. Background technique [0002] In bidirectional voltage converters, separate voltage regulators are typically used for current flow in each direction. Typically, two different current sense amplifiers measure the voltage across a shunt. There are at least three notable problems associated with this approach. First, a shunt in series with the input path introduces significantly large power losses. For example, in a 100A system, for a voltage across the shunt of 5OmV, the power dissipation would be on the order of 5W. Second, when charging the battery, the current through the shunt may be about 1 / 5 of the discharge current, and the voltage across the shunt will only be 10mV. With such a small signal in a switching regulator (where the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/24H02M3/335G01R19/00
Inventor R·M·马蒂内利
Owner THE BOEING CO