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Coreless current sensor for high current power module

A technology of power module and magnetic sensor, which is applied in the direction of converting AC power input into DC power output, measuring current/voltage, and converting device of output power, etc., can solve the problems of increasing the complexity and volume of power modules, etc.

Active Publication Date: 2019-07-30
INFINEON TECH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This increases the complexity and bulk of the assembly of the power module

Method used

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  • Coreless current sensor for high current power module
  • Coreless current sensor for high current power module
  • Coreless current sensor for high current power module

Examples

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Embodiment Construction

[0014] In the following, details are set forth to provide a more comprehensive explanation of the exemplary embodiments. It will be apparent, however, to one skilled in the art that the embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form or schematic diagrams rather than in detail in order to avoid obscuring the embodiments. In addition, the features of different embodiments described hereinafter may be combined with each other unless otherwise specifically stated.

[0015] In addition, equivalent or similar elements or elements having equivalent or similar functions are denoted by equivalent or similar reference numerals in the following description. Since the same or functionally equivalent elements are given the same reference numerals in the drawings, repeated description of elements with the same reference numerals may be omitted. Accordingly, descriptions provided for element...

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Abstract

The invention discloses a coreless current sensor for a high current power module. A power module is provided that is configured to supply power to a load. The power module includes a current generator, a current rail, and a magnetic sensor. The current generator is configured to generate a current. The current rail is configured to receive the current and output the current from the power module.The current rail includes a first opening formed therethrough, and the current, while flowing along the current rail in an output direction, produces a magnetic field. The magnetic sensor is disposedin the first opening of the current rail, and is configured to generate a differential sensor signal based on the magnetic field impinging thereon. The current generator is further configured to regulate the current based on the differential sensor signal.

Description

technical field [0001] The present disclosure relates generally to current power modules, and more particularly to coreless current sensors for current power modules. Background technique [0002] For high power drive implementations, a non-inverting current sensor is used to determine the phase current delivered by the inverter power module to the motor. Achieving non-inverting current sensing is challenging because high-power environments can include phase currents up to 1kA, voltages up to 1200V, step voltage transients up to 15kV / μs (Si) or 120kV / μs (SiC), at Voltage overshoot of more than 100V in both directions (lower than DCLink- and DCLink+), need for safety isolation (minimum fundamental), and power density (output power per volume). A magnetic sensor implementing a field concentrator according to the core-based sensing principle can be used for such an in-phase current sensor. [0003] With a core-based solution, field concentrators are placed around each current...

Claims

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Application Information

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IPC IPC(8): H02M7/00H02P27/06G01R19/25G01R33/07G01R33/06
CPCH02M7/003H02P27/06G01R19/25G01R33/07G01R33/06G01R15/202G01R15/207G01R31/3277H02K11/27H02K11/33G01R19/10
Inventor L·艾克雷德勒G·弗里斯恩格
Owner INFINEON TECH AG
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