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Recent content by Hadi.Dastour

  1. Hadi.Dastour

    [SOLVED] SST25VF016B Problem

    Hello My problem was solved. Can you guess what that was? SST25VF016B needs 30 mA to erase and write but my power supply provides just 25 mA .So the Problem was the needed power. Therefore I Connected it to a stronger supply and it worked very well. My code does not have any mistakes. Thanks
  2. Hadi.Dastour

    [SOLVED] SST25VF016B Problem

    Hi Mr Klaus Thanks for your response. I have added my perfect code. void SPI_Flash_4KBErase(unsigned long int Address) { SPI_Flash_WREN(); //Enable Write Ability FLASH_CS_PIN = 0; //Enable Flash Chip SPI_Flash_SendByte(0x20); //Send "Chip Erase" Instruction...
  3. Hadi.Dastour

    [SOLVED] SST25VF016B Problem

    Yes I am sure. After erasing I read status register and wait until resetting busy bit in status register. thank you for your response 1626210781 I am very confused because I do every thing but I don't know why it does not work. also at first I put erasing function in main code and execute it on...
  4. Hadi.Dastour

    [SOLVED] SST25VF016B Problem

    Hi I have a problem in writing on SST25VF016B flash. I drive it with PIC16LF1516 by using a Software SPI. My problem is that when I erasea a sector(4KB) of it I can not write any things on that sector any more. And when I remove erasing sector instruction from my code I can write on it easily...
  5. Hadi.Dastour

    [ARM] Pricing of a project

    Hi how do you price your time that you spend on a project as a freelancer? Or how do you price your projects that you have done as a freelancer? What things do you think are important to pricing a project? . You can share your ideas about above questions. . And if you are willing, please share...
  6. Hadi.Dastour

    IR2110 full bridge problem

    Hi I don't know their good value. In your opinion what are their value( rise and fall time)? Several question: 1) Which is important Rise time or fall time or both? 2) should always be rise time more than fall time ( It means R gate ON bigger than R gate OFF)?why? Thank you a lot for your...
  7. Hadi.Dastour

    IR2110 full bridge problem

    Hi PWM frequency = 20 KHz - - - Updated - - - OK very good. In my PCB distance is 76mm. Does your circuit have snuber on mosfets? - - - Updated - - - Thank you. Yes , you are right. lines are 76 mm. - - - Updated - - - Now I measure rise time and fall time. Rise time (turning on mosfet...
  8. Hadi.Dastour

    IR2110 full bridge problem

    Thank you. I will do your tips. Do you have any things such as pdf or article .... about high voltage PCB layout? I want to learn. My PCB is big because do several works.just right part of my PCB for full bridge circuit. I try that decrease gate lines and did it. Lines are short and does not...
  9. Hadi.Dastour

    IR2110 full bridge problem

    Thank you. * I have A GND plane on PCB but it is invisible. * I have 4 Capacitors for 310V that they are back of PCB.(each of them 120uF 450V) * I don't know what is this? I did not see it. please explain it. * yes unfortunatly I forget it. I did not have enough clearance * how can I measure...
  10. Hadi.Dastour

    IR2110 full bridge problem

    Hi Picture of my circuit in Fig 1. Can I increase gate resistor? what is your opinion about it? I have a snuber circuit on load (2 KOhm + 1nF). - - - Updated - - - a thing when I connected circuit to 300 V both of right mosfets burned (It means they were short circuit.) Is it possible that My...
  11. Hadi.Dastour

    IR2110 full bridge problem

    Hi I tested it with 310V but right mosfets (High and low side) that have PWM on their gate source burned.:-(:-(:-( It means mosfets that switched are burned. I think the reason of burning is dv/dt.:thinker::thinker::thinker::thinker::thinker: I do not have 48V , 100V or 150V supply voltage...
  12. Hadi.Dastour

    IR2110 full bridge problem

    Hi Thank you for your tips. I tried to observe these tips in my design. until now it is working with 24V very well. I should Test it with 310V. I hope there will be no problem. Hadi Dastour
  13. Hadi.Dastour

    IR2110 full bridge problem

    Thank you. I understand. I should let left low side continuously ON and PWM just for right high side and right low side for charging bootstrap cap. I do it now. - - - Updated - - - Thank you a lot. it is working very well.:clap::clap::clap:
  14. Hadi.Dastour

    IR2110 full bridge problem

    Thanks for your answer. top transistor right: gate source voltage in Fig 1 top transistor left is off. bottom transistor right: gate source voltage in Fig 2 (for charging bootstrap cap) bottom transistor left: gate source voltage in Fig 3 top transistor right and bottom transistor left have same...
  15. Hadi.Dastour

    IR2110 full bridge problem

    Hi I have a problem in H bridge. when I connect a resistor series with a inductor (390 Ohm + 100 uH) to Load of H bridge it is work very well (Their signals in Fig 1) but when I connect a Motor (2 Ohm) to Load of H bridge it is not work.(Their signals in Fig 2). I introduce signals in Fig 3. if...
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