AN4277 Datasheet, PDF (1/23 Pages) STMicroelectronics – Using STM32F3 Series PWM shut-down features for motor control and digital power conversion

AN4277
Application note
Using STM32F3 Series PWM shut-down features
for motor control and digital power conversion
Introduction
The purpose of this application note is to describe STM32F3 Series timer break feature and
show how it can be used with other STM32F3 Series internal resources for over-current and
over-voltage protection in applications such as motor control and digital power conversion
(lighting, SMPS, induction heating).
This application note:
• Provides an overview of the timer break feature,
• Details how the timer break input is connected to different break sources,
• Enumerates the different break event sources,
• Provides some scenarios of PWM output signal response to break events coming from an
internal source, an external source or a combination of both internal and external break
signals,
• Shows how to implement over-current and over-voltage protections using the timer break
feature and other embedded peripherals (such as comparators, DAC and so on).
This document has to be read in conjunction with STM32F3 Series reference manuals:
• STM32F303xB/C/D/E, STM32F303x6/8, STM32F328x8, STM32F358xC, STM32F398xE
advanced ARM^®-based 32-bit MCUs (RM0316),
• STM32F302xB/C/D/E and STM32F302x6/8 advanced ARM^®-based 32-bit MCUs
(RM0365),
• STM32F301x6/8 and STM32F318x8 advanced ARM^®-based 32-bit MCUs (RM0366),
• STM32F334xx advanced ARM^®-based 32-bit MCUs (RM0364).
March 2015
DocID024409 Rev 2
1/23
www.st.com
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