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Enpirion® Power Evaluation Board User Guide
EV1320QI PowerSoC
Quick Start Guide
Figure 2: J2 allows control of the Enable pin.
The jum per on Enable pin as s hown in Figure 2 is in disable mode. When jumper
is between the m iddle and right pins the s ignal pin is c onnec ted to ground or logic
low . W hen the jum per is betw een the left and m iddle pins , the s ignal pin is
c onnec ted to AVIN or logic High.
WARNING: complete steps 1 through 4 before applying power to the EV1320QI
evaluation board.
STEP 1: S et the “ENA” jum per to the D is able Pos ition. See Figure 2 above.
STEP 2: With the AVIN power s upply off, c onnec t it to the input c onnec tors
AVIN (TP 14) and PGND ( TP16) as indic ated in Figure 3 and s et the
power s upply to the desired voltage (3.3V nominal).
STEP 3: With the VDDQ power supply off, c onnec t it to the input power
connectors VDDQ (TP12) and PGND (TP 17) as indic ated in Figure 3,
and s et the pow er supply to the des ir ed voltage (1.2V−1.8V).
CAUTION: Be m indful of the polar ity and m agnitude. This evaluation
board has no reverse polarity or voltage clamping protection on it.
STEP 4: C onnec t the load to the output connectors VOUT (TP13) and PGND
(TP15) , as indicated in Figure 3.
STEP 5: Pow er up the board by turning on the AVIN power s upply fir s t and then
the VD DQ s upply. Next, move the ENA jum per to the enabled position.
The EV1320QI is now powered up and VO UT s hould be half of VD DQ .
You can now m ake Effic ienc y, R ipple, Line/Load R egulation, Load
transient, Power OK, and temperature related measurements.
STEP 6: Power Up/Dow n Behavior – R em ove E NA jum per and c onnec t a puls e
generator (output disabled) signal to the middle pin of ENA and
Ground. Set the puls e am plitude to swing fr om 0 to 2.5 volts . Set the
puls e period to 10msec, duty cycle to 50% and fas t tr ans ition (< 1us ec .)
Hook up os c illos c ope pr obes to ENA, POK and VOUT w ith c lean ground
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