DGP12U5S5 Просмотр технического описания (PDF) - Power-One Inc.
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DGP12U5S5 Datasheet PDF : 3 Pages
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DGP12 SERIES – SINGLE OUTPUT
DGP12 SERIES BLOCK DIAGRAM
SHIELDED ISOLATION TRANSFORMER
+
5 + OUTPUT
OUTPUT POWER DERATING
12
10
+ INPUT 1
+
CURRENT
MODE
6 - OUTPUT
8
– INPUT 2
PWM
+
7 TRIM
ON/OFF 3
–
6
ISO AMP
FIVE SIDED SHIELDED COPPER CASE
LOW TC
BANDGAP
REFERENCE
4
50
60
70
80
90 100
AMBIENT TEMPERATURE
APPLICATION NOTES (cont’d):
Typical Performance: (Tc=25°C, Vin=Nom VDC, Rated Load)
Negative Outputs
A negative output voltage may be obtained by
connecting the +OUT to circuit ground and
connecting -OUT as the negative output.
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 5 volt outputs.
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 = 5VDC
80
75
LINE = 16VDC
70
65
60
0 10 20 30 40 50 60 70 80 90 100
LOAD (%)
INPUT CURRENT Vs. LINE INPUT VOLTAGE
5.0
4.5
4.0
3.5
3.0
2.5
100% LOAD
2.0
1.5
50% LOAD
1.0
0.5
0.0
0 2 4 6 8 10 12 14 16
LINE INPUT (VOLTS)
EFFICIENCY Vs. LINE INPUT VOLTAGE
85
50% FULL LOAD
80
100% FULL LOAD
75
70
65
4
6
8
10
12
14
16
LINE INPUT VOLTAGE (VOLTS)
INPUT VOLTAGE DERATING
120
100
80
60
40
20
A 0
3.50 3.75
4.00
4.25
4.50
4.75
5.00
LINE INPUT (VDC)
NOTES ON USING THE CURVES
1) The input currents are for 12 watts of input power. For
5 volt output models the current is approximately 16% less.
2) The efficiency curves are for 12 volt output. To use the curves for
other models adjust as follows:
5 volt models subtract approximately 2%.
15 volt models subtract approximately 1%.
+OUT 5
TRIM 7
-OUT 6
10K LOAD
+OUT 5
TRIM 7
-OUT 6
TRIM
DOWN
TRIM
UP
LOAD
USING TRIMPOT
Figure 1. USING FIXED RESISTORS
3
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