UG-054 Datasheet, PDF (4/8 Pages) Analog Devices – Setting Up the Evaluation Board for the ADP150

UG-054
OUTPUT VOLTAGE MEASUREMENTS
VOLTAGE SOURCE
Evaluation Board User Guide
VOLTMETER
LOAD
Figure 5. Output Voltage Measurement Setup, TSOT
VOLTAGE SOURCE
VOLTMETER
LOAD
Figure 6. Output Voltage Measurement Setup, WLCSP
Figure 5 and Figure 6 show how the evaluation board can be
connected to a voltage source and a voltage meter for basic out-
put voltage accuracy measurements. A resistor can be used as
the load for the regulator. Ensure that the resistor has a power
rating that is adequate to handle the power that is expected to
be dissipated across it. An electronic load can also be used as
an alternative. Ensure that the voltage source can supply enough
current for the expected load levels.
Follow these steps to connect to a voltage source and voltage meter:
1. Connect the negative terminal (−) of the voltage source to
one of the GND pads on the evaluation board.
2. Connect the positive terminal (+) of the voltage source to
the VIN pad of the evaluation board.
3. Connect a load between the VOUT pad and one of the
GND pads.
4. Connect the negative terminal (−) of the voltage meter to
one of the GND pads.
5. Connect the positive terminal (+) of the voltage meter to
the VOUT pad.
When these steps are completed, the voltage source can be
turned on. If J1 is inserted (connecting EN to VIN for auto-
matic startup), the regulator powers up.
If the load current is large, the user must connect the voltage
meter as close as possible to the output capacitor to reduce the
effects of IR drops.
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