M e a s u r i n g
T e c h n o l o g y
a n d
I n d u s t r i a l
E l e c t r o n i c
schuster
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GmbH
DM 659
FORWARD VOLTAGE MEASURING DEVICE
Features
· Measurements of the output and
transfer characteristics of IGBTs
· Current pulse up to 5 kA
· Selectable energy of the current
pulse
· Pulse width (trapezium) adjustable in a range from 100 up to
500 µs
· Single measurements and recording of characteristic curves
· Integrated gate current source
from 1 to 500 mA and voltage
source from 0 to 20 V
Description
The forward voltage measuring
device DM 659 is developed for
the measurement of the forward
voltage of power semiconductors
and of the output and transfer
characteristics of IGBTs. The
DM 659 is designed as well for
manual usage as for integration
into automated test equipment.
In measuring the forward voltage
of a semiconductor, the test device is operated with a load current
pulse of up to 5000 A. The pulse
width is adjustable in a range from
100 to 500 µs.
The testing current is allocated by
an internal capacitor bank. To
recharge this unit after every
measurement a recovery period of
250 ms max. is required, depending on the quantity of the
testing current.
Configuring the measurement
system via serial interface or ex-
Applications
ternal control the transmitted data
will be displayed and used for the
measurement.
The automatic mode enables the
generation of characteristic curves. Therefore the system performs several measurements at increasing current values, starting at
a selected base value.
The DM 659 has software to record up to 16 curves in one diagram and each curve can be denoted. Furthermore the curves can
be stored or printed as single data
arrays. They also can be exported
into an Excel file for further application.
· Measuring of the forward voltage
of power semiconductors.
· For research of behavioural
characteristics of power semiconductors during development
and in design verification.
· Short measurement times for
quality control in production settings.
Technical Data
Parameter Settings
Load current IL
Current range
Resolution
Accuracy
Maximum output voltage
Load time tL
Range
Accuracy
Gate current IG
Range
Accuracy
Gate voltage VG
Range
Accuracy
Measurements via DM 659
Forward voltage measurement VF
Measurement range
Accuracy
Measurement tolerance
Analogue Output
Forward Voltage VF
Voltage output range
Factor
Load Current IL
Voltage output range
Factor
Measurements with Data Acquisition to PC
Forward voltage measurement VF
Measurement range
Resolution
Measurement tolerance
Forward current measurement IF
Measurement range
Resolution
Measurement tolerance
Miscellaneous
Power supply
Power (Main) fuse
Declaration of Conformity
Dimensions (W x H x D)
Weight
schuster elektronik GmbH
Peter-Fleischmann-Strasse 30
D-91074 Herzogenaurach
Tel
+49 (0) 9132 750 440
Fax
+49 (0) 9132 750 4420
[email protected]
www.schuster-elektronik.de
The technical data may be subject to
change without notice.
659 DM dbe / 2002 ©Schuster Elektronik
DM 659
10 to 5000 A
0.1 A at 10 ... 199.9 A / 1 A at 200 … 5000 A
0.5 % v. selected value ± 0.5 A
30 V (Error message when limit value exceeded)
100 … 500 µs
± 5 µs
1 … 500 mA
±5%
1.0 … 20.0 V
±1%
20 V
1 mV
0.5 % of measurement value ± 1 Digit
0 … 10 V
preset 2 V / V
0 … 10 V
at 10 … 200 A:
at 200.1 … 800 A:
at 800.1 … 5000 A:
25 A / V
100 A / V
500 A / V
2 / 4/ 10 / 20 V (manual selection)
1 / 2048 of selected measurement range
0.5 % of measurement value ± 1 Digit
250 / 1000 / 5000 A
1 / 2048 of measurement range
0.5 % of measurement value ± 1 Digit
230 V~ 50/60 Hz maximum 650 W
0.8 AT
510 x 420 x 510 [mm] (19” 9HE)
Approx. 30 kg