Switching Power Supply Fundamentals

Electronics Engineering/Switching Power Supply Fundamentals

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Welcome to the course EE 230.

Assumed Understanding or Prerequisites

• A basic course in computer hardware covering building and repair (A+ cert course).
• OS 1 or more
  • Windows file system and general program use
  • Linux file system and general use, with working WINE install
• EE 111 Digital Electronics
• EE 112 Electronics fundamentals
• EE 113 Analog Electronics Devices
• EE 90 Introduction to Electronics or the folowing
  • oscope DMM and power supply use
  • Breadboarding
  • Schematics
  • SPICE
• required algebra 1 geometry 1
• recommended algebra 2 calculus 1
• Linear Technology's LTspice IV / Switcher CAD IV installed

Syllabus

This is a introduction in to power supplies and Switch mode power supply theory. This course will cover,

• zenner and lm78xx based linear regulation. why it doesn't work well.
• basic unregulated switching power supply
• voltage feedback regulation
• current loop limit regulation
• Inductor based buck, boost, buck boost, invert, non isolated flyback
• Capacitor based charge pump, buck, boost, invert

The continuation of this course is EE 330 Switching Power Supplies 2

Before contributing please see the talk page for this class for more information.EE 230 Switching Power Supply Fundamentals

Lecture plan

• EE 230 Digital Electronics
  • Lecture 1, The Linear Regulation Problem.
  • Lecture 2, The Basic unregulated switching supply
  • Lecture 3, The Basic regulated switching supply
  • Lecture 4, Current sense
  • Lecture 5, Soft start
• Mid-term Exam
  • Lecture ?, Boost, Invert, Flyback
  • Lecture ?, Linear technology's integrated switch, National Semiconductor simple switcher, TI integrated switch
• Final Exam

Textbooks and required reading/reference

• recommended reading
  • Demystifying Switching Power Supplies, Raymond A. Mack, Jr. ISBN 0-7506-7445-8

Lab Materials

• A computer with
  • windows 98,2000,ME,XP or Linux distribution with WINE

Datasheets Relevant

Logic

		Schmitt Trigger
Quad NAND 3-18V	CD4011	CD4093
Dual D flipflop 3-18V	CD4013

Timer/Driver

	200mA sink/source	100mA sink 10mA source
	NE555	TLC555

opamps

main product table opamps below 50mhz TI

speed	1Mhz	2Mhz	4Mhz	10Mhz
general purpose
Rail to Rail input

Comparators

speed	1Mhz	2Mhz	4Mhz	10Mhz
general purpouse
Rail to Rail input		NS LM339

Mosfets & BJTs

P channel

amps\volts			-30
5A			FDC610PZ 4.9A 42mΩon +-25Vgs

N channel

amps\volts			30
5A			FDC653N 35mΩon +-20Vgs

Diodes

Schottky

Volts\Amps	1A	2A	3	4	5
40V		MBRS2040L
60V	MBRA160T3

General Purpose Rectifier

Volts\Amps	100mA-300mA	1A
100V TH	1N914 916 4148 4448	1N4002 1N400x
75V SMT	1N914 916 4148 4448

Inductors

Rseries\Ipeak	2	3.2DC 3.4(10% Ldrop) 5.2(20% Ldrop)
65mΩ		[Gowanda 121AT1003V]100uH

Capacitors

IO pins	6	8	18	24	32

See also

Educational level: this is a tertiary (university) resource.

Type classification: this resource is a course.

Subject classification: this is an engineering resource.