PFS172 datasheet(49/92 Pages) PADAUK

поискавой системы для электроныых деталей

PFS172 датащи(PDF) 49 Page - PADAUK Technology.

49 / 92 page

PFS172

8bit MTP MCU with 8-bit ADC

Page 49 of 92

PDK-DS-PFS172-EN_V000-May 8, 2020

2. PWM waveforms when switching two duty cycles:

Fig. 14: Two complementary PWM waveforms with dead zones

Note: This example just illustrate a method for generating complementary PWM with dead zones and

switching duty cycle. If users try to switch duty cycle by adjusting PWM_pulse: such as when the present

PWM_pulse = 70, directly let PWM_pulse_a = 100 and PWM_pulse_b = 160. Then the new value must not

be re-assigned to tm2b register until tm2ct is 0.

This method can effectively deal with the problems such as first duty cycle inaccuracy and possible

dead zone time reduction or dead zone disappear caused by assigning new value to tm2b when tm2ct is not

0. Please handle it carefully and consult FAE when necessary according to the practical application

specifications.

TM2

TM3

Dead time

30us

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