Hello everyone.
I am trying to design a Class D amplifier for a subject in college. I used a full bridge topology.
Everything is going as expected, except that i have 120A in my power transistors.
I have researched online and found that i need a dead time circuit, so both transistors don't stay on at the same time.
How can i do that? I can't find the answer online. Can someone please help me?
I have my circuit, and three graphics in attachment (images).
The first is the current in the power mosfet (in blue), the second is the "sound" entering the class D (a sine wave, in green), and the third is the differential output from the class D (in red).
I am simulating it in LTspice
The circuit, from left to right: PWM(comparator) -> level shifter -> buffers -> power mosfets -> low pass filter -> load(speaker)
I am trying to design a Class D amplifier for a subject in college. I used a full bridge topology.
Everything is going as expected, except that i have 120A in my power transistors.
I have researched online and found that i need a dead time circuit, so both transistors don't stay on at the same time.
How can i do that? I can't find the answer online. Can someone please help me?
I have my circuit, and three graphics in attachment (images).
The first is the current in the power mosfet (in blue), the second is the "sound" entering the class D (a sine wave, in green), and the third is the differential output from the class D (in red).
I am simulating it in LTspice
The circuit, from left to right: PWM(comparator) -> level shifter -> buffers -> power mosfets -> low pass filter -> load(speaker)