Brandon Yau
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Hi everyone,
I am using orcad pspice to do the PWM+error compensated amplifier circuit.
Here are the few questions.
1. What is the output of the error compensated amplifier? Is it the error between the two inputs (just minus each other)? Or just compare and generate the supply voltage out?
2. For the duty ratio, d=Vc/Vp, (Vc=output of the error amplifier, Vp=sawtooth waveform reference voltage), if it is the error between the two inputs (just minus each other), then when the error increases (Vc increases), the duty ratio also increases, then the output will be increased infinitely?
3. For the PWM+error compensated amplifier circuit, should I use Etable or Opamp component to do simulation in Orcad Pspice?
4. For the sbreak component in Orcad Pspice, does it only support a voltage between 0 and 1? When I adjust the reference voltage (vpulse in Pspice) and set V1=0 and V2=1, the sbreak works, when V2-V1 does not equal to 1, it doesnt work.
Im sorry for so many questions=]
I am using orcad pspice to do the PWM+error compensated amplifier circuit.
Here are the few questions.
1. What is the output of the error compensated amplifier? Is it the error between the two inputs (just minus each other)? Or just compare and generate the supply voltage out?
2. For the duty ratio, d=Vc/Vp, (Vc=output of the error amplifier, Vp=sawtooth waveform reference voltage), if it is the error between the two inputs (just minus each other), then when the error increases (Vc increases), the duty ratio also increases, then the output will be increased infinitely?
3. For the PWM+error compensated amplifier circuit, should I use Etable or Opamp component to do simulation in Orcad Pspice?
4. For the sbreak component in Orcad Pspice, does it only support a voltage between 0 and 1? When I adjust the reference voltage (vpulse in Pspice) and set V1=0 and V2=1, the sbreak works, when V2-V1 does not equal to 1, it doesnt work.
Im sorry for so many questions=]