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Inductor binning enhanced current sense

An inductor and current technology, applied in instruments, electrical components, adjusting electrical variables, etc., can solve problems such as increasing the overall price of power modulators

Pending Publication Date: 2021-06-18
ALPHA & OMEGA SEMICON INT LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Discarding an out-of-spec inductor increases the overall price of the power modulator

Method used

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  • Inductor binning enhanced current sense
  • Inductor binning enhanced current sense
  • Inductor binning enhanced current sense

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Embodiment Construction

[0026] Although the following detailed description contains many typical details for the purpose of explanation, those skilled in the art will understand that modifications and variations based on the following details are within the scope of the invention. Therefore, the exemplary embodiments described below do not cause any general loss to the claimed invention and do not impose any limitation on the claimed invention.

[0027] In accordance with the teachings of the present invention, it may be advantageous to use inductors traditionally considered out of specification to create a voltage regulator capable of operating over the full range of device specifications. When production shifts make a significant portion of a production lot unusable according to conventional specifications, using conventional out-of-spec inductors will reduce the overall price of the power modulator device and can increase component availability.

[0028] As mentioned above, during production, indu...

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Abstract

An apparatus comprises a MOSFET, a controller coupled to the MOSFET, an inductor conductively coupled to the MOSFET. A reported current output of the controller is adjusted based on a predetermined excursion of an attribute of the inductor from a fixed attribute value.

Description

technical field [0001] Aspects of the invention relate generally to power modulators, and more specifically to power monitoring and internal control of power modulators. Background technique [0002] In electronics, grouping is the process of classifying a production batch of electrical components or devices into separate categories based on one or more characteristics of the electrical components or devices. For example, multi-core central processing units (cpus) may be grouped based on clock speed capabilities. Devices can also be grouped by a single characteristic as a pass or fail indicator for a production lot. For inductors, DC resistance (DCR) can be used to pass or fail devices from the same production lot. For example, inductors with a DCR value that is two or more standard deviations outside the average DCR of a production lot can be discarded and recycled as scrap because they do not meet the base specification when the average DCR meets the production specifica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/157
CPCH02M3/157H02M1/0009H02M3/158H02M1/0025H02M1/08
Inventor 尼古拉斯·I·阿奇博尔德里斯·S·A·菲尔布里克史蒂文·P·劳尔
Owner ALPHA & OMEGA SEMICON INT LP