Specifications

EVALPFC-3kW-IPZ65R019C7
4
Application Note AN 2014-06
V1.1 January 2015
Table of contents
1 Introduction .................................................................................................................................................. 5
1.1 Evaluation Board ................................................................................................................................ 5
1.2 CoolMOS™ C7 .................................................................................................................................. 5
1.3 thinQ!™ SiC Diode Generation 5 ....................................................................................................... 5
1.4 CCM-PFC Controller .......................................................................................................................... 6
1.5 Gate Driver ICs (EiceDRIVER™ Compact) ....................................................................................... 6
2 Application ................................................................................................................................................... 7
3 Circuit Description ...................................................................................................................................... 8
3.1 Line Input ........................................................................................................................................... 8
3.2 Power Stage  Boost Type PFC Converter ....................................................................................... 8
3.2.1 Separate Source Power MOSFET ................................................................................................................. 8
3.3 PWM Control of Boost Converter....................................................................................................... 8
3.4 Thermal concept ................................................................................................................................ 8
4 Circuit Operation ......................................................................................................................................... 9
4.1 Soft Startup ........................................................................................................................................ 9
4.2 Gate Switching Frequency ................................................................................................................. 9
4.3 Protection Features .......................................................................................................................... 10
4.3.1 Open loop protection (OLP) ........................................................................................................................ 10
4.3.2 First over-voltage protection (OVP1) .......................................................................................................... 10
4.3.3 Peak current limit ........................................................................................................................................ 10
4.3.4 IC supply under voltage lockout.................................................................................................................. 11
4.3.5 Bulk Voltage Monitor and Enable Function (VBTHL_EN) ....................................................................... 11
5 Circuit Diagram .......................................................................................................................................... 12
6 PCB Layout ................................................................................................................................................ 13
7 Component List ......................................................................................................................................... 14
8 Boost Choke Layout .................................................................................................................................. 17
9 Source connection options ...................................................................................................................... 17
10 Test report .................................................................................................................................................. 19
10.1 Load and Line Test .......................................................................................................................... 19
10.2 Conductive EMI Test ........................................................................................................................ 21
10.3 Startup behavior ............................................................................................................................... 22
11 Conclusion ................................................................................................................................................. 23
12 References ................................................................................................................................................. 23