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Designing Control Loops for Linear and Switching Power Supplies: A Tutorial Guide

Designing Control Loops for Linear and Switching Power Supplies: A Tutorial Guide

By (author): Christophe Basso
Copyright: 2012
Pages: 590
ISBN: 9781608075584

eBook $139.00 Qty:
Loop control is an essential area of electronics engineering that today's professionals need to master. Rather than delving into extensive theory, this practical book focuses on what you really need to know for compensating or stabilizing a given control system. You can turn instantly to practical sections with numerous design examples and ready-made formulas to help you with your projects in the field. You also find coverage of the underpinnings and principles of control loops so you can gain a more complete understanding of the material. This authoritative volume explains how to conduct analysis of control systems and provides extensive details on practical compensators. It helps you measure your system, showing how to verify if a prototype is stable and features enough design margin. Moreover, you learn how to secure high-volume production by bench-verified safety margins.
Basics of Loop Control - Open-Loop Systems. The Necessity of ControlClosed-Loop Systems. Notions of Time Constants. Performance of a Feedback Control System. Transfer Functions. Conclusion. ; Transfer Functions - Expressing Transfer Functions. Solving for the Roots. Transient Response and Roots. S-Plane and Transient Response. Zeros in the Right Half Plane. Conclusion. ; Stability Criteria of a Control System - Building An Oscillator. Stability Criteria. Transient Response, Quality Factor, and Phase Margin. Selecting the Crossover Frequency. Conclusion. ; Compensation - The PID Compensator. Stabilizing the Converter with Poles-Zeros Placement. Output Impedance Shaping. Conclusion. ; Operational Amplifiers-Based Compensators - Type 1: An Origin Pole. Type 2: An Origin Pole, plus a Pole/Zero Pair. Type 2a: An Origin Pole plus a Zero. Type 2b: Some Static Gain plus a Pole. Type 2: Isolation with an Optocoupler. The Type 2: Pole and Zero are Coincident to Create an Isolated Type 1. The Type 2: A Slightly Different Arrangement. The Type 3: An Origin Pole, a Pole/Zero Pair. The Type 3: Isolation with an Optocoupler. Conclusion. ; Operational Transconductance Amplifier-Based Compensators - The Type 1: An Origin Pole. The Type 2: An Origin Pole plus a Pole/Zero Pair. Optocoupler and OTA: A Buffered Connection. The Type 3: An Origin Pole and a Pole/Zero Pair. Conclusion. ; TL431-Based Compensators - A Bandgap-Based Component. Biasing the TL431: The Impact on the Gain. Biasing the TL431: A Different Arrangement. Biasing the TL431: Component Limits. The Fast Lane Is the Problem. Disabling the Fast Lane. The Type 1: An Origin Pole, Common-Emitter Configuration. The Type 1: Common-Collector Configuration. The Type 2: An Origin Pole plus a Pole/Zero Pair. The Type 2: Common-Emitter Configuration and UC384X. The Type 2: Common-Collector Configuration and UC384X. The Type 2: Disabling the Fast Lane. The Type 3: An Origin Pole plus a Double Pole/Zero Pair. The Type 3: An Origin Pole plus a Double Pole/Zero PairNo Fast Lane. Testing the Ac Responses on a Bench. Isolated Zener-Based Compensator. Nonisolated Zener-Based Compensator. Nonisolated Zener-Based Compensator: A Lower Cost Version. Conclusion. ; Shunt Regulator-Based Compensators - The Type 2: An Origin Pole plus a Pole/Zero Pair. The Type 3: An Origin Pole plus a Double Pole/Zero Pair. The Type 3: An Origin Pole plus a Double Pole/Zero PairNo Fast Lane. Isolated Zener-Based Compensator. Conclusion. ; Measurements and Design Examples - Measuring the Control System Transfer Function. Design Example 1: A Forward dc-dc Converter. Design Example 2: A Linear Regulator. Design Example 3: A CCM Voltage-Mode Boost Converter. Design Example 4: A Primary-Regulated Flyback Converter. Design Example 5: Input Filter Compensation. Conclusion. ;
  • Christophe Basso Christophe Basso is a product engineering director at ON Semiconductor in Toulouse, France. He received his B.S.E.E. in electronics from Montpellier University and his M.S.E.E. in power electronics from the National Polytechnic Institute of Toulouse. A Senior Member of the IEEE, Mr. Basso is recognized expert, patent holder, and author in the field.
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