# Switching Power Supply Fundamentals
## Electronics Engineering/Switching Power Supply Fundamentals

Back to: Topic:Electronic Engineering Welcome to the course EE 230.
* EE230 Edit/View
* Electronic Engineering
* EE Switching Power Supply Fundamentals
* The Linear Regulation Problem
* The Basic unregulated switching supply
* The Basic regulated switching supply

## 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, and why it doesn't work well.
* Basic unregulated switching power supplies
* 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 |