Enpirion
®
Power Evaluation Board User Guide
EP53A8xQI PowerSoC
Quick Start Guide
STEP 1: Set the “ENABLE” jumper to the Disable Position. Set VS0,
VS1 and VS2 pins for the desired output setting.
CAUTION: The signal pins ENA, VS0, VS1 and VS2 must be
connected to a logic “high”, jumper to the left, or a logic “low”, jumper to
the right. If left floating the state is indeterminate.
STEP 2: Connect a power supply to the input test points, TP8 (+) and TP5 (-) as
indicated in Figure 1. The same test points can also be used to measure the
input voltage.
CAUTION: Be mindful of the polarity and the voltage magnitude. If V
IN
is
greater than 6V, the board may get damaged. If the input voltage polarity
is wrong, diode D1 will conduct, and draw excessive input current.
STEP 3: Set the output voltage select pins for the desired output voltage. Refer
to Tables 1 and 2 to determine the setting.
CAUTION: The external resistor divider is not populated
in the standard board configuration. Choosing the “EXT”
option for the EP53A8LQI without the external resistors
R1 and R2 will result in unpredictable behavior.
STEP 4: Connect the load to the output connectors TP7 (+) and TP6 (-), as
indicated in Figure 1.The same test points are also used to measure the DC
output voltage.
CAUTION: Please note the polarity of the output terminals is opposite
from the input terminals.
STEP 5: Move the ENABLE jumper to the enabled position, and power up the
board. The EP53A8xQI should now be operational.
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