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AN4277 Datasheet(PDF) 2 Page - STMicroelectronics

Part # AN4277
Description  Using STM32F3 Series PWM shut-down features for motor control and digital power conversion
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN4277 Datasheet(HTML) 2 Page - STMicroelectronics

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Contents
AN4277
2/23
DocID024409 Rev 2
Contents
1
Break function overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2
Break implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1
TIM1/8/20 break implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2
TIM15/16/17 break implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3
Break sources summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4
Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5
Using the break function with other MCU resources . . . . . . . . . . . . . . 14
5.1
Break function used for over-current protection . . . . . . . . . . . . . . . . . . . . 14
5.2
Break function used for over-voltage protection . . . . . . . . . . . . . . . . . . . . 15
5.3
Using an external emergency signal together with the
internal comparator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.4
Filtering the break input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.5
Locking the selected configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Appendix A How to use the DAC to define thresholds . . . . . . . . . . . . . . . . . . . . 21
6
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22


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