Section 6: Characterization of power discretes
Model 2651A High Power System SourceMeter® Instrument User's Manual
Device connections
To run the test, make the connections as illustrated in the following figure. To ensure good contact,
use care when making connections.
NOTE
For best results, all connections should be left floating (no connections should be tied to ground).
Figure 17: Connections for IV curve characterization
G
D
S
N-Channel
power
MOSFET
G
D
S
LO
G HI G G G
S
LO
S
HI
G
G G G
S
LO
SENSE/GUARD
S
HI
LO
HI
OUTPUT
40V, 50A MAX.
S HI
Gate resistor
(if required)
Gate resistor
(if required)
HI
LO
LO
S LO
LO
S LO
Model 2651A
(master node #1)
Series 26xxA*
(subordinate node #2)
Equivalent
SMU
(subordinate
node #2)
SMU
(master
node #1)
HI
S HI
HI
S HI
LO
S LO
LO
S LO
* Model 260xA, Model 261xA,
or Model 263xA
NOTE
During high-current pulsing through the channel of the device, the gate may begin to oscillate. This
oscillation creates an unstable voltage on the gate, which may cause unstable measurements through
the device channel. You can install a resistor to dampen this oscillation and stabilize the gate. Install
the resistor between the gate of the device and the force and sense HI of the Model 2651A. If the
gate still remains unstable, enable High-C mode on the Model 2651A source-measure unit (SMU).
6-4
2651A-900-01 Rev. A / March 2011
