DocID024409 Rev 2

13/23

AN4277

Examples

22

Comparator 4

output is

connected

internally to

TIM1 BRK and

filter is not

configured.

Low

The PWM signal is stopped during the break signal low level, as shown in the

following screen shot:

Comparator 4

output is

connected

internally to

TIM1 BRK and

filter is

configured.

High

During the window defined by the filter duration, the break event has no impact

on the PWM generation even if the break condition is verified.

This is the case of the following example (screen shot) where the PWM signal is

generated normally when the break signal is at high level during the window

defined by the filter.

– The filter duration is 666 ns (BKF = 1000b, Filter duration is (6*8/fDTS),

fDTS = 72 MHz).

– The comparator output high level duration is 1.207 µs.

Table 3. Scenarios of PWM output status in response to internal/external break events (continued)

Configuration

Programmed

polarity

Result