Analysis of Stability of a 3 stage Audio Power Amplifier with feedback applied using PSpice

Description

This simulation with OrCAD PSpice 16.6 , shows a simple and elegant method to analyze the stability of a 3-stage amplifier with feedback applied as the compensation capacitors vary. This method is applied to the 200 Watt Mosfet Power Amplifier AL-35.
We ‘ll see how to estimate the phase margin with Bode diagrams and how the compensation capacitors affect the phase margin and the frequency response of the amplifier gain.

• Project Type: For-Credits
• Complexity: Advanced
• Components number: >100
• SPICE software: PSpice
• Software version: 16.6+
• Full software version nedeed : Yes
• Screenshots simulation images: