Switch-mode power supplies : spice simulations and practical designs / by Christophe P. Basso.

Format:

Book

Author/Creator:

Basso, Christophe P., author.

Language:

English

Subjects (All):

SPICE (Computer file).

Switching power supplies--Design and construction.

Switching power supplies.

Power resources.

Feedback control systems.

Genre:

Electronic books.

Physical Description:

1 online resource

Edition:

2nd edition.

Place of Publication:

New York, New York : McGraw-Hill Education LLC., 2008, [2014], ?2014.

System Details:

text file PDF

Summary:

Fully updated to incorporate new SPICE features and capabilities, this practical guide explains, step by step, how to simulate, test, and improve switch-mode power supply designs. Detailed formulas with founding equations are included. Based on the author's continued research and in-depth, hands-on work in the field, this revised resource offers a collection of the latest SPICE solutions to the most difficult problem facing power supply designers: creating smaller, more heat-efficient power supplies in shorter design cycles.

Contents:

Preface

C. Acknowledgments

D. Nomenclature

1. Introduction to power conversion

"do you really need to simulate?"

What you will find in the following pages

What you will not find in this book

Converting power with resistors

Converting power with switches

The duty ratio factory

The buck converter

The boost converter

The buck-boost converter

Input filtering

What i should retain from this chapter

References

Appendix 1a?an rlc transfer function

Appendix 1b?the capacitor equivalent model

Appendix 1c?power supply classification by topologies

Appendix 1d?root mean square values of ccm and dcm switching waveforms

2. Small-signal modeling

State-space averaging

The pwm switch model?the voltage-mode case

The pwm switch model?the current-mode case

The pwm switch model?parasitic elements effects

Pwm switch model in borderline conduction

The pwm switch model?a collection of circuits

Other averaged models

Appendix 2a?basic transfer functions for converters

Appendix 2b?poles, zeros, and complex plane?a simple introduction

Appendix 2c?small-signal analysis of the dcm boost converter in voltage mode

3. Feedback and control loops

Observation points

Stability criteria

Phase margin and transient response

Choosing the crossover frequency

Shaping the compensation loop

An easy stabilization tool?the k factor

Feedback with the tl431

The optocoupler

Operational transconductance amplifiers

Shunt regulators

Small-signal responses with psim and simplis

Appendix 3a?automated pole-zero placement

Appendix 3b?a tl431 spice model

Appendix 3c?type 2 manual pole-zero placement

Appendix 3d?understanding the virtual ground in closed-loop systems

4. Basic blocks and generic switched models

Generic models for faster simulations

Operational amplifiers

Sources with a given fan-out

Voltage-adjustable passive elements

A hysteresis switch

An undervoltage lockout block

Leading edge blanking

Comparator with hysteresis

Logic gates

Transformers

Astable generator

Generic controllers

Dead time generation

Short-pulse generators

List of generic models

Convergence options

Appendix 4a?an incomplete review of the terminology used in magnetic designs

Appendix 4b?feeding transformer models with physical values

5. Simulations and practical designs of nonisolated converters

Appendix 5a?the boost in discontinuous mode, design equations

6. Simulations and practical designs of off-line converters ? the front end

The rectifier bridge

Power factor correction

Designing a bcm boost pfc

Appendix 6a?diode and bulk capacitor current constraints: a different view

Appendix 6b?a small-signal model of the bcm boost converter power factor corrector operated in voltage- or current-mode control

7. Simulations and practical designs of flyback converters

An isolated buck-boost

Flyback waveforms, no parasitic elements

Flyback waveforms with parasitic elements

Flyback converter operated in quasi-resonance

Observing the drain signal, no clamping action

Clamping the drain excursion

Dcm, looking for valleys

Designing the clamping network

Two-switch flyback

Active clamp

Small-signal response of the flyback topology

Practical considerations about the flyback

Compensating over power

Standby power of converters

A 20-w, single-output power supply

A 90-w, single-output power supply

A 35-w, multioutput power supply

Component constraints for the flyback converter

Appendix 7a?reading the waveforms to extract the transformer parameters

Appendix 7b?the stress

Appendix 7c?transformer design for the 90-w adapter

Appendix 7d?a small-signal model of the flyback converter operated in quasi-resonance

Appendix 7e?switching losses with a nonlinearly varying parasitic capacitor

Appendix 7f?testing transformer core saturation level

8. Simulations and practical designs of forward converters

An isolated buck converter

Reset solution 1, a third winding

Reset solution 2, a two-switch configuration

Reset solution 3, the resonant demagnetization

Reset solution 4, the rcd clamp

Reset solution 5, the active clamp

Synchronous rectification

Multioutput forward converters

Small-signal response of the forward converter

A single-output 12-v, 250-w forward design example

Component constraints for the forward converter

Appendix 8a?half-bridge drivers using the bootstrap technique

Appendix 8b?impedance reflections

Appendix 8c?transformer and inductor designs for the 250-w adapter

Appendix 8d?a small-signal model for the active clamp forward converter operated in voltage mode control

Appendix 8e?web content

A. Conclusion.

Notes:

Includes bibliographical references and indexes.

Description based on cover image and table of contents, viewed on September 18, 2014.

Local Notes:

Electronic reproduction. Chicago, Illinois : McGraw Hill Education, 2014. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.

Other Format:

Print version: Basso, Christophe P. Switch-mode power supplies

ISBN:

9780071823463 (print ISBN)

0071823468 (print ISBN)

Access Restriction:

Restricted for use by site license.