3. Deadtime_break

3.1. Function description:

This demo shows how to configure the ADVANCED_TIMERn peripheral to generate complementary signals, to insert a defined dead time value, to use the break feature and to lock the desired parameters. ADVANCED_TIMERnCLK is fixed to systemcoreclock 8MHz, the ADVANCED_TIMERn prescaler is equal to 8 ,so the ADVANCED_TIMERn counter clock used is 1MHz . the Clock division is ADV_TIMER_TIM_CR1_CKD_CKD4 so the dead-time and sampling clock is 4 * 1MHz.

For instance:

The dead time is computed as the following description:

DTG[7:5] = 0xx: DT = DTG[7:0] * tDTS.

DTG[7:5] = 10x: DT = (64 + DTG[5:0]) * 2 * tDTS.

DTG[7:5] = 110: DT = (32 + DTG[4:0]) * 8 * tDTS.

DTG[7:5] = 111: DT = (32 + DTG[4:0]) * 16 * tDTS.

3.2. Test result:

The output signal as the following description:

ADVANCED_TIMERn_BRKIN connect to 3V3 then the break of the wave can be observed through the oscilloscope.

The channel 1 freq is 1KHz.

The channel 1 duty is set to 30% actual is %17.

3.3. IO connection:

NONE

3.4. Output pad:

PAD
pad_ADVANCED_TIMERn_bkin
pad_ADVANCED_TIMERn_etr
pad_ADVANCED_TIMERn_ch1_i
pad_ADVANCED_TIMERn_ch2_i
pad_ADVANCED_TIMERn_ch3_i

Note

The ‘m’ and ‘n’ in “advtimer_timerm” and “advtimer_timern” indicate the peripheral number.