Smart Gate Driver IC Simplifies Motor Drive Design In Battery-Powered Applications

Focus:

The design of power-dense motor drive inverters is highly challenging, requiring many components to be placed on an often awkwardly shaped board within a confined space. This article discusses how the high level of integration provided by the 6EDL7141, a smart gate driver IC for three-phase, battery-powered BLDC motor drive inverters, addresses the space limitations encountered in cordless power tools, which operate from battery packs in the 12-V to 48-V range, and similar battery-powered applications. It also explains key details of the design process when implementing motor drive inverters using this IC such as how to calculate gate-drive parameters using the vendor’s spreadsheet tool, implementing RDS(ON) current sensing, use of on-chip fault protection, and device configuration using the vendor’s GUI too.

What you’ll learn:

• How to shrink BLDC motor drive designs in cordless power tools and other battery powered applications
• How to configure the 6EDL7141 smart gate driver IC when applied in a BLDC motor drive inverter

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Author & Publication:

Peter Green, Infineon Technologies, El Segundo, Calif. , How2Power Today, Sep 15 2021

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