Tektronix 5 Series Printable Help

Where,
T
oni
is the Turn on loss of the i
th
switching cycle, in watt.
T
OFFi
is the Turn off loss of the i
th
switching cycle, in watt.
fswi is the Switching frequency of the ith switching cycle, in Hz.
(T
off
-Stop
i
) is the stop point of T
off
region of the i
th
switching cycle, in time unit.
(T
on
-Stop
i
) is the stop point of T
on
region of the i
th
switching cycle, in time unit.
(T
on
-Start
i
) is the start point of a power T
on
region of the i
th
switching cycle.
(T
off
-Start
i
) is the start point of TOffi region, in time unit Vds - Voltage drain current, in Volts.
Ids is the drain current, in Amps.
■
Energy Loss Computation
Energy loss computation for T
on
and T
off
are calculated using the following equation:
Where:
T
Eoni
is the i
th
switching cycle turn on energy loss in joule.
T
Eoffi
is the i
th
switching cycle turn off energy loss in joule.
■
Computation of Conduction
Conduction is computed as RDS(on) value for the MOSFET is used to calculate total loss in the application. To measure
conduction loss and energy in a MOSFET, using the following equation:
Where:
R
DS
(on) is the Dynamic resistance, in Ω.
Cond
i
is the Conduction Loss in Watt, Cond
Ei
is the Conduction Energy Loss in Joule.
Cond
i
is the i
th
switching cycle conduction loss in watt. Cond
Ei
is the i
th
switching cycle conduction energy in joules.
f
swi
is the i
th
switching cycle frequency, in Hz.
I is the Cycle number.
Measurement algorithms
MSO54, MSO56, MSO58, MSO58LP, MSO64 Help 469

Tektronix 5 Series Specifications

General

Brand	Tektronix
Model	5 Series
Category	Test Equipment
Language	English