Hi,
I need to switch the 220v dc to load while pressing pushbuttons. I am having +220v dc in capacitor bank which will be made available to load as +220v while pressing one button and -220v while pressing second button.
So, I am planning to desing a H bridge using IGBT's and driver ic's as IR2110. By coming across several forums and tutorial i came to know that the driver ic is the optimum choice in order to drive the IGBT fully on. The IR2110 has HIN and LIN pins for which pwm signal has to be given which controls high side and low side switching. The high side should have bootstrap capacitor circuit in order to drive the high side igbt.
I want to know how to generate the pwm signals for HIN and LIN of IR2110. I dont want to do the switching operation at a particulat frequency. If I press one button IGBTs Q1 and Q4 should ON in order to provide +220v to the load. While pressing the second button IGBTs Q2 and Q3 should ON in order to provide -220v to the load.
I have attached the kind of circuit which I am planning to use for this (got the circuit from net). I need clarifications in generating pwm signal for switching the igbts and also about bootstrap circuit.
I need to switch the 220v dc to load while pressing pushbuttons. I am having +220v dc in capacitor bank which will be made available to load as +220v while pressing one button and -220v while pressing second button.
So, I am planning to desing a H bridge using IGBT's and driver ic's as IR2110. By coming across several forums and tutorial i came to know that the driver ic is the optimum choice in order to drive the IGBT fully on. The IR2110 has HIN and LIN pins for which pwm signal has to be given which controls high side and low side switching. The high side should have bootstrap capacitor circuit in order to drive the high side igbt.
I want to know how to generate the pwm signals for HIN and LIN of IR2110. I dont want to do the switching operation at a particulat frequency. If I press one button IGBTs Q1 and Q4 should ON in order to provide +220v to the load. While pressing the second button IGBTs Q2 and Q3 should ON in order to provide -220v to the load.
I have attached the kind of circuit which I am planning to use for this (got the circuit from net). I need clarifications in generating pwm signal for switching the igbts and also about bootstrap circuit.
Attachments
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