AN4013 datasheet(34/37 Pages) STMICROELECTRONICS

34 / 37 page

Specific applications

AN4013

34/37

DocID022500 Rev 4

Specific applications

5.1

Infrared application

The STM32 general-purpose timers can be used to emulate several infrared protocol. An

example of this application is explained in application note AN3174 “Implementing an RC5

infrared remote control receiver with the STM32F100/101/102/103/105/107 microcontrollers

lines.

This application note describes a software solution for implementing an RC5 receiver using

the STM32 general-purpose timers.

5.2

3-phase AC and PMSM control motor

The STM32 advanced and general-purpose timers with ADC and DAC are used to control

two types of 3-phase motor: AC induction motor and PMSM, with different current sensing

methodologies:



Isolated current sensing



Three shunt resistors



Single shunt resistor (ST patented solution)

The STM32 timers are used also in the feedback loop to interface with the different sensors

used in the different rotor position feedback:



Tachogenerator



Quadrature encoder



Hall sensors: 60° and 120° placement

For more details, please refer to: stm32_pmsm_foc_motorcontrol_fmlib.

5.3

Six-step mode

The six step mode is a specific mode of STM32 advanced timers. When complementary

outputs are used on a channel, preload bits are available on the OCxM, CCxE and CCxNE

bits. The preload bits are transferred to the shadow bits at the COM (commutation event).

Thus you can program in advance the configuration for the next step and change the

configuration of all the channels at the same time. COM can be generated by software by

setting the COM bit in the EGR register or by hardware (on TRGI rising edge).

An application example of the use of this mode is the control of the brush-less 3-phase DC

motor (3-phase BLDC motor).

AN4013 Datasheet(PDF) 34 Page - STMicroelectronics

AN4013 Datasheet(HTML) 34 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37

Datasheet Download

Link URL