PFS172 datasheet(48/92 Pages) PADAUK

48 / 92 page

PFS172

8bit MTP MCU with 8-bit ADC

Page 48 of 92

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

TM3CT

//------Timer PWM output control -------------------

$ TM3C

IHRC, PB5, PWM, Inverse;

Inverse output

.delay

dead_zone*2 - 2;

"*2": SYSCLK = 2MHz

"-2": executing “$ TM3C XXXX” needs two

instructions

$ TM2C

IHRC, PB4, PWM;

//***Note: Do not change the sequence of the control part’s program*****

//-------Following codes can be for reference when user needs switch duty cycle ----------

//------ Switching PWM_pulse -------------------

While (1)

{

While(tm2ct!=0)

{}

Wait till tm2ct=0 to avoid noise

TM2B

PWM_Pulse_a - 1;

TM3B

PWM_Pulse_a + 2 * dead_zone - 1;

.delay

t_delay*2;

While(tm2ct!=0)

{}

TM2B

PWM_Pulse_b - 1;

TM3B

PWM_Pulse_b + 2 * dead_zone - 1;

.delay

t_delay*2;

}

The following figures show the waveforms at different condition.

1. The PWM waveforms in a fixed-duty cycle:

Fig. 13: Two complementary PWM waveforms with dead zones

TM2

TM3

Dead time

30us.

PFS172 Datasheet(PDF) 48 Page - PADAUK Technology.

PFS172 Datasheet(HTML) 48 Page - PADAUK Technology.

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 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92

Datasheet Download

Link URL