Analog Devices DC2881A-A Manual page 3

OUTPUT AND ONBOARD E-LOAD CONFIGURATION
the load current step. The maximum load current step
achievable is typically 25A. The dynamic circuit MOSFET
is off when EXT PULSE is floating or grounded. Apply
around 30mV of initial value to EXT PULSE to make the
MOSFET open before the pulse, so that the slew rate of
–
+ I
IN
+
V
IN
– +
POWER
–
SUPPLY
DEMO MANUAL DC2881A-A
load current will follow the slew rate of EXT PULSE lin-
early. Refer to the table in the schematic file to optimally
route the voltage sense points during load transient test. It
is highly recommended to monitor the load voltage using
JP21, which is Kelvin connected to C227.
Figure 2. Proper Measurement Equipment Setup
+
C
OUT
V GND
OUT
Figure 3. Measuring Output Voltage Ripple
–
+
LOAD2
V
OUT2
–
–
I
OUT2
+
+
I
OUT1
–
–
V
OUT1
+
LOAD1
dc2881a-a F02
Rev. 0
3