Efficient Thermal Management for Motor Control

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Efficient Thermal Management for Motor Control

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Efficient Thermal Management for Motor Control

Introducing a temperature dependent current limit for motor drivers. This thermal management scheme ensures high efficient operation by reducing switching losses when motor is experiencing heavy loads or binding. In the presentation we will discuss factors determining power dissipation in a motor driver integrated circuit examining dynamic and steady state operation and their effect on junction temperature. We will review how to calculate an estimate of power dissipation using the information provided in a typical motor driver data sheet. With an understanding how power is dissipated in a motor driver, we will introduce a new system using temperature dependent current limit that will protect both the driver and the motor.

Presented by Thomas Zemites

Presented at DwF Silicon Valley - March 26, 2015

Session ID: AMF-IND-T0987

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