500V CoolMOS

3

Application Note AN 2012-04

V1.0 April 2012

Table of contents

1 Introduction..................................................................................................................................................4

1.1

Features and Benefits ........................................................................................................................4

1.2

Applications (Target Market)..............................................................................................................5

2 Superjunction (SJ) Principle ......................................................................................................................5

2.1

General Description ...........................................................................................................................5

2.2

Superjunction Benefit of 500V CE .....................................................................................................7

2.2.1 Switching Speed ............................................................................................................................ 7

2.2.2 BJT (Bipolar Junction Transistor)-Effect ........................................................................................ 9

3 Technology Parameters............................................................................................................................11

3.1

Gate Charge (Qg) .............................................................................................................................11

3.2

Energy Stored in Output Capacitance (Eoss)....................................................................................12

4 Measurement Results ...............................................................................................................................13

4.1

Efficiency in CCM PFC ....................................................................................................................13

4.2

Hard Commutation on Conducting Body Diode...............................................................................15

5 Design Guideline for Using 500V CE .......................................................................................................16

5.1

Minimum External Gate Resistor (RG,ext) .........................................................................................16

5.2

Paralleling of 500V CE.....................................................................................................................16

5.3

Safe Operation after Protection Mode .............................................................................................17

6 Portfolio ......................................................................................................................................................19

7 References .................................................................................................................................................20