Integrated Audio Amplifiers in BCD Technology
(Sprache: Englisch)
Integrated Audio Amplifiers in BCD Technology is the first book to describe the design at Audio Amplifiers using a Bipolar CMOS DMOS (BCD) process. It shows how the combination of the 3 processes, made available by advances in process technology, gives rise...
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Integrated Audio Amplifiers in BCD Technology is the first book to describe the design at Audio Amplifiers using a Bipolar CMOS DMOS (BCD) process. It shows how the combination of the 3 processes, made available by advances in process technology, gives rise to the design of more robust and powerful audio amplifiers which can be more easily implemented in digital and mixed-signal circuits. Integrated Audio Amplifiers in BCD Technology starts with an introduction to audio amplifiers which includes a comparison of amplifier classes, general design considerations and a list of specifications for integrated audio power amplifiers. This is followed by an extensive discussion of the properties of DMOS transistors which are the key components in BCD technologies. Then the theory and the design of chargepump circuits is considered. In most BCD technologies only n-type DMOS transistors are available. Therefore a boosted supply voltage is required to achieve rail-to-railoutput capability which can be generated with a chargepump. The new solutions that are found can also be used for many applications where DC-DC conversion with low output ripple is needed. Finally the design of audio power amplifier in BCD technology is discussed. The design concentrates on a new quiescent control circuit with very high ratio between quiescent current and maximum output current and on the output stage topologies. The problem of controlling the DMOS output transistors over a wide range of currents either saturated or non saturated requires a completely new design of the driving circuits that utilize of the special properties of the DMOS transistor.
Integrated Audio Amplifiers in BCD Technology is essential reading for practising analog design engineers and researchers in the field. It is also suitable as a text for an advanced course on the subject. With a foreword by Ed van Tuijl.
Inhaltsverzeichnis zu „Integrated Audio Amplifiers in BCD Technology “
1 Introduction.- 1.1 Integrated Audio Amplifiers.- 1.1.1 Output Power and Dissipation.- 1.1.2 Amplifier Classes.- 1.1.3 Amplifier Requirements.- 1.2 BCD Technology.- 1.2.1 DMOS versus Bipolar.- 1.2.2 DMOS Output Stage.- 1.3 Outline of this Thesis.- 1.4 References.- 2 DMOS Technology.- 2.1 Introduction.- 2.1.1 Historical Perspective.- 2.1.2 Introduction to DMOS.- 2.1.3 Application Areas.- 2.2 DMOS Device Structures.- 2.2.1 Lateral DMOS.- 2.2.2 Vertical DMOS.- 2.2.3 VMOS and UMOS.- 2.2.4 Comparison of DMOS Structures.- 2.3 DMOS Device Properties.- 2.3.1 Transfer Characteristics.- 2.3.2 Parasitic Elements.- 2.4 DMOS Process Technology.- 2.4.1 Isolation Techniques.- 2.4.2 Device Termination Techniques.- 2.4.3 BCD Technology.- 2.5 DMOS Versus Bipolar.- 2.5.1 Second Breakdown.- 2.5.2 Bipolar/DMOS Hybrids.- 2.6 Conclusion.- 2.7 References.- 3 Chargepump Circuits.- 3.1 Introduction.- 3.1.1 Switching Voltage Regulators.- 3.1.2 Voltage Multiplication.- 3.1.3 Application Areas of Chargepumps.- 3.2 Voltage Multipliers.- 3.2.1 Marx Voltage Multiplier.- 3.2.2 Cockcroft-Walton Voltage Multiplier.- 3.2.3 Dickson Voltage Multiplier.- 3.2.4 Comparison of Voltage Multipliers.- 3.3 Chargepump Operation.- 3.3.1 Normal Mode.- 3.3.2 Double Phase Mode.- 3.3.3 Current Driven Mode.- 3.3.4 Double Phase Current Driven Mode.- 3.3.5 Simulation Results.- 3.4 Voltage Control.- 3.4.1 Output Voltage Clipping.- 3.4.2 Amplitude Control.- 3.4.3 Frequency Control.- 3.4.4 Active Stage Control.- 3.5 Chargepump Implementation.- 3.5.1 Diodes and Switches.- 3.5.2 Driver Circuits.- 3.5.3 Output Voltage Detection.- 3.5.4 Realization Example.- 3.6 Conclusion.- 3.7 References.- 3.8 Appendix: Down Conversion.- 3.8.1 Voltage Division.- 3.8.2 References.- 4 Chargepump Modeling.- 4.1 Introduction.- 4.1.1 Chargepump Models.- 4.2 Extended Chargepump Model.- 4.2.1 Some Notation Conventions.- 4.2.2 Transient Modeling.- 4.2.3 Steady-State Modeling.- 4.2.4 Transient Behavior.- 4.3 Modeling of Parasitic Effects.- 4.3.1
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Current Leakage.- 4.3.2 Series Resistance.- 4.3.3 Stray Capacitance.- 4.3.4 Parallel Capacitance.- 4.3.5 Body-Effect.- 4.3.6 Combination of Parasitic Effects.- 4.4 Conversion Efficiency.- 4.4.1 Power Consumption and Efficiency.- 4.4.2 Influence of Parasitics.- 4.5 Conclusion.- 4.6 References.- 5 BCD Audio Amplifiers.- 5.1 Introduction.- 5.1.1 Sources of Distortion.- 5.1.2 Output Resistance.- 5.1.3 Circuit Design in BCD Technology.- 5.2 Output Stage Topologies.- 5.2.1 Common Drain Stages.- 5.2.2 Common Source Stages.- 5.2.3 Comparison of Output Stages.- 5.3 A BCD Amplifier Design.- 5.3.1 Amplifier Topology.- 5.3.2 Signal Splitter.- 5.3.3 Input Stage.- 5.3.4 Output Drivers.- 5.3.5 Complete Amplifier.- 5.4 Conclusion.- 5.5 References.- 6 Conclusion.- 6.1 Conclusions.- 6.2 Recommendations.
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Bibliographische Angaben
- Autor: Marco Berkhout
- 1997, 1997, 210 Seiten, Maße: 16 x 24,1 cm, Gebunden, Englisch
- Verlag: Springer
- ISBN-10: 0792380037
- ISBN-13: 9780792380030
- Erscheinungsdatum: 31.10.1997
Sprache:
Englisch
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