CPWR-AN26, Rev A, 08-2018
Copyright © 2018 Cree, Inc. All rights reserved.
The information in this document is subject to change without notice.
Cree and Zero Recovery are registered trademarks, and the Cree logo and C3M are trademarks, of Cree, Inc
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If your measurements reflect the measurements described above, then turn the PWM
ON/OFF switch (sw2) to the OFF position, switch OFF +15V_1 and +15V, and then switch
OFF the +7V power supply and proceed to the appropriate starting procedure..
Please take the following steps in order when starting the unit in AC/DC mode:
•
If the board is being tested for the first time, follow the procedure described at the
beginning of Section 7.
•
The board should be connected as shown in Figure 6.
•
Do not close MCB yet.
•
Ensure that the PWM ON/OFF switch (sw2) is in the OFF position.
•
Put mode switch (sw1) in AC/DC position.
•
Turn ON the +7V supply (J7). Check the current draw from the 7V supply, It should be
same as the value of
“CURRENT 1”
listed in Table 5.
•
Turn ON +15V, +15V_1, and the power supplies and check the current draw to be sure
it is similar to th
e stated amount “CURRENT 1” in T
able 5.
•
Ensure that there is no load at the output.
•
Set the output voltage for 260 VDC operation with the help of potentiometer VR1. Turn
the potentiometer until the voltage across the ADC test points yield the value given in
