20 V, 2 A Source Measure Unit
IV Characterization of Transistors
Because the PXI-4130 has two programmable output channels, you can use a single module to characterize metal-oxide semiconductor field-effect
transistors (MOSFETs) and bipolar junction transistors (BJTs). Figure 2 shows the connections for performing IV curve tracing on a MOSFET using the
PXI-4130. In this configuration, the utility channel is used to set a constant value for the gate-source voltage and the SMU channel is used to sweep
the drain-source voltage and measure the induced current. You can also configure remote-sense connections on the SMU channel to precisely
measure the drain-source voltage so that the IV curve data is as accurate as possible.
HI
D
HI Sense
SMU Channel
LO Sense
S
LO
V
GS
= V
t
+ 1
G
I
D
V
GS
= V
t
+ 4
HI
Utility Channel
GND
IV curves for field-effect transistor at different
values of V
GS
with breakdown region shown at right.
V
DS
Figure 2. Connections for Performing IV Curve Tracing on a MOSFET Using the PXI-4130
Battery Charge-Cycle Testing and Rechargeable Source Simulation
The SMU channel on the PXI-4130 has the ability to sink up to 10 W of power, making it ideal for charge-cycle testing on rechargeable batteries.
The configuration shown on the left side of Figure 3 illustrates the connections needed to charge and discharge a battery in either constant current
or constant voltage mode. The remote-sense terminals precisely measure the voltage directly at the battery. Alternatively, you can use the PXI-4130
as a source simulator to test chargers or power other electronic devices. For rechargeable source simulation, replace the battery in Figure 3 with a
charger or other device under test.
HI
+
HI Sense
SMU Channel
LO Sense
3.7 V Nominal Voltage
–
LO
4V
3V
HI
Utility Channel
GND
Constant current discharge curve for a Lithium-ion
battery with nominal voltage shown as dashed line.
Figure 3. Connections for Charging and Discharging a Battery in Constant Current or Constant Voltage Mode Using the PXI-4130
BUY ONLINE
at
ni.com
or
CALL 800 813 3693 (U.S.)
3
NI [ NATIONAL INSTRUMENTS CORPORATION ]
