Input And Output Voltmeters; Quick Startup - Analog Devices ADP5055-EVALZ User Manual

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INPUT AND OUTPUT VOLTMETERS

Use the following steps to measure the input and output
voltages with voltmeters:
1. Ensure that the voltmeters are connected to the appropriate
ADP5055-EVALZ terminals and not to the load or power
sources themselves. If the voltmeters are not connected
directly to the ADP5055-EVALZ, the measured voltages
are inaccurate due to the voltage drop across the leads
and/or connections between the ADP5055-EVALZ, the
power source, and/or the load.
2. Connect the voltmeter positive terminal measuring the
input voltage to J11 (PVIN1) and connect the voltmeter
negative terminal measuring the input voltage to J12 (GND).
3. Connect the voltmeter positive terminal measuring the
output voltage of the Channel 1 buck regulator to J14
(VOUT1) and connect the voltmeter negative terminal
measuring the output voltage to J13 (GND).
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QUICK STARTUP

Verify the following before powering up the ADP5055-EVALZ:

The power source voltage for the three buck regulators
(PVIN1, PVIN2, and PVIN3) is within the 4.5 V to 18 V
range. In addition, shunt the S1 and S2 jumpers to use the
same input voltage for all three buck regulators

Use the J-EN1, J-EN2, and J-EN3 jumpers to enable or
disable the desired channel.
When the power source and load are connected to the
ADP5055-EVALZ, the evaluation board can be powered for
operation. If the load is not enabled, enable the load. Check that
the load is drawing the proper current and that the output
voltage maintains voltage regulation.
After power-up, the following output voltages (VOUTx) are
measured:

VOUT1 = 1.0 V, supply up to 7 A continuous load current

VOUT2 = 1.3 V, supply up to 7 A continuous load current

VOUT3 = 1.8 V, supply up to 3 A continuous load current
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ADP5055-EVALZ User Guide