5
dc2583af
DEMO MANUAL DC2583A
Quick start proceDure
Auxiliary Supply Input
1. Place and connect test equipment as shown in Figure 5.
2. Turn down the electronic load to a minimum value and
turn off the electronic load.
3. Connect the output of the auxiliary supply to the
DC2583A as shown in Figure 5. Turn on the auxiliary
supply and set its current limit to 2A. Then increase its
output voltage to 48V.
4. Once the LED (D3) on the DC2583A is lit, check the
output voltage using a voltmeter. Output voltage should
be within 37-57V.
5. Verify
T2P
response with an oscilloscope as shown
in Figure 5. The
T2P
response during auxiliary power
operation is provided in Table 3.
Figure 5. Setup Diagram for Auxiliary Supply Input
LOAD
DC2583 F05
OPTO
+
VIN
–
+ AUXILIARY
DC POWER
SUPPLY
–
ENABLE
PSE TYPE
(TO µP)
DC/DC
CONVERTER
Table 3.
T2P
Response During Auxiliary Power Operation
PD CLASS
T2P
RESPONSE
0–4
Logic Low
5–8
75% Logic High/25% Logic Low,
Toggle at 840Hz (typical)
