Problem to generate burst mode pwm signal using pwm.h library

Projects Programming
1

Hi everyone,

I am facing difficulties in generating burst mode PWM signal using PWM.h library. I want to generate the following signals.

gate signals
gate signals1901×878 5.94 KB

Can you please help me with my code? I am attaching code.
Is there any alternative way to generate it?

Any help is appreciated. Thanks.

[code]
#include <PWM.h>

int32_t frequency_half = 10000; //frequency (in Hz)
int32_t frequency_buck = 60000;
int VG1 = 9;
int VG2 = 10;
float a;

void setup()
{
  InitTimersSafe();
  Serial.begin(9600);
  Serial.println("I am ready");
  bool success_1 = SetPinFrequencySafe(VG1, frequency_half);
  bool success_2 = SetPinFrequencySafe(VG2, frequency_buck);
  if (success_2) {
    pinMode (13, OUTPUT);
    digitalWrite (13, HIGH);

  }
}

void loop()
{
  int sensorValue = analogRead(A0);
  Serial.println(sensorValue);
  pwmWrite(VG1, sensorValue / 4);
  a = digitalRead(VG1);
  Serial.println(a);

  if (digitalRead(VG1) == HIGH)
  {

    pwmWrite(VG2, 64);
    delay(30);


  }
  delay (30);


}
[/code]
2

Please describe the problem, and the timing ranges over which the combined signal might vary.

A much simpler approach would be to use an AND gate, with one input connected to the high frequency PWM output, the other to the lower frequency gating signal output.

1 Like
3

Basically I need two pwm signal to drive mosfet.
1st signal will be a normal pwm signal with frequency,f1=(lets say 20khz) with D1=50% duty cycle.
2nd one will be pwm pulse skipped signal (burst mode) .That means when the fiist signal is high ,2nd signal will be activated with frequency f2=(lets say 100khz),duty cycle D2=(lets say 40%)and when 1st signal is zero, 2nd signal will be zero.

I need to implement this with arduino or any other microcontroller .I am not allowed to use AND gate.

4

Is this a classroom assignment?

Please post the actual requirements, not hypothetical ones. The details for generating the actual signal will depend on those requirements, and very much on which processor you choose.

5

This is not an assignment by the way.
Requirements:
1st signal : f1 =20khz ,D1=50%
2nd signal(burst mode) : f2=100khz ,D2=41%

6

"arduino" is not a microcontroller. "Arduino" is a company and brand name, with many products, based on several different microcontrollers.

7

Sorry!my bad.
Edited.

9

Greetings to you sir/mam,
My mini project is to generate pulses at high frequency in a dual active bridge full bridge converter through an algorithm/code.
I have zero knowledge in it sir,could you please help me out sir.

10

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