©2008 Fairchild Semiconductor Corporation

FCP20N60 / FCPF20N60 Rev. C0

www.fairchildsemi.com

7

Figure 15. Peak Diode Recovery dv/dt Test Circuit & Waveforms

DUT

VDS

+

_

Driver

RG

Same Type

as DUT

VGS

• dv/dt controlled by R

G

•I

SD controlled by pulse period

VDD

L

I SD

10V

VGS

( Driver )

I SD

( DUT )

VDS

( DUT )

VDD

Body Diode

Forward Voltage Drop

VSD

I

FM , Body Diode Forward Current

Body Diode Reverse Current

IRM

Body Diode Recovery dv/dt

di/dt

D =

Gate Pulse Width

Gate Pulse Period

--------------------------

DUT

VDS

+

_

Driver

RG

Same Type

as DUT

VGS

• dv/dt controlled by R

G

•I

SD controlled by pulse period

VDD

LL

I SD

10V

VGS

( Driver )

I SD

( DUT )

VDS

( DUT )

VDD

Body Diode

Forward Voltage Drop

VSD

I

FM , Body Diode Forward Current

Body Diode Reverse Current

IRM

Body Diode Recovery dv/dt

di/dt

D =

Gate Pulse Width

Gate Pulse Period

--------------------------

D =

Gate Pulse Width

Gate Pulse Period

--------------------------