DGP12U5D12 View Datasheet(PDF) - Power-One Inc.
Part Name
Description
MFG CO.
'DGP12U5D12' PDF : 3 Pages View PDF
DGP12 SERIES – DUAL OUTPUT
+ INPUT 1
– INPUT 2
ON/OFF 3
DGP12 SERIES BLOCK DIAGRAM
+
4 + OUTPUT
SHIELDED ISOLATION TRANSFORMER
+
CURRENT
MODE
PWM
+
+
–
ISO AMP
5 CMN
6 – OUTPUT
7 TRIM
FIVE SIDED SHIELDED COPPER CASE
LOW TC BANDGAP REFERENCE
OUTPUT POWER DERATING
12
10
8
6
4
50
60
70
80
90 100
AMBIENT TEMPERATURE
APPLICATION NOTES (cont’d):
Typical Performance: (Tc=25°C, Vin=Nom VDC, Rated Load)
Remote ON/OFF Operation
The remote ON/OFF pin may be left floating if this
function is not used. It is recommended to drive this
pin with an open collector/drain or a relay contact.
When the ON/OFF pin is pulled low with respect to
the -INPUT, the converter is placed in a low power
drain state. The input capacitors are kept fully
charged in the OFF mode. For proper operation, do
not drive this input from a logic gate directly. The
ON/OFF pin must be left floating for proper
operation. Be aware that this input may be noise
sensitive; use proper PCB design guidelines. The
ON/OFF pin should never be pulled more than 0.3
volts below -INPUT or have a voltage greater than
2 volts applied.
Output TRIM
The TRIM pin may be used to adjust the output
±10% from the nominal setting. This function
allows adjustment for voltage drops in the system
wiring, as well 5.2 volt outputs for ECL applications.
Figure 1 shows the proper connections to use this
function. A trimpot value of 10K⍀ should be used
for the dual 5 volt output. A trimpot value of 20K⍀
should be used for 12 and 15 volt outputs. If the
TRIM function is not required the pin may be left
floating.
EFFICIENCY Vs. LOAD
85
LINE = 16VDC
80
75
LINE = 5VDC
70
65
60
55
0 10 20 30 40 50 60 70 80 90 100
LOAD (%)
INPUT CURRENT Vs. INPUT VOLTAGE
6
5
4
100% LOAD
3
2
1
50% LOAD
0
0 2 4 6 8 10 12 14 16
LINE INPUT (VOLTS)
+OUT 4
TRIM 7
-OUT 6
10K LOAD
+OUT 4
TRIM 7
-OUT 6
TRIM
DOWN
TRIM
UP
LOAD
EFFICIENCY Vs. LINE INPUT VOLTAGE
85
80
50% FULL LOAD
75
70
100% FULL LOAD
65
60
55
50
4
6
8
10
12
14
16
LINE INPUT (VOLTS)
2.5
2.0
1.5
1.0
0.5
0.0
3
INPUT CURRENT Vs. LINE INPUT
100% LOAD
75% LOAD
40% LOAD
5
7
9 11 13 15 17
LINE INPUT (VDC)
POWER DERATING
110
100
90
80
70
60
50
40
3
5
7
9 11 13 15 17
LINE INPUT (VDC)
USING TRIMPOT
Figure 1.
USING FIXED RESISTORS
3
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