1
DESCRIPTION
The dual output DGP12 Series provides symmetrical +/ outputs
from 5 volts to 15 volts in packages that provide power densities
up to 7 watts per cubic inch (0.43 watts per cm
3
). Designed to
operate on ultra-wide input voltages from 3.5 to 16 volts, and
with remote ON/OFF capability, the DGP12 supplies power from
battery or system sources . The fully isolated, shielded case allows
precise operation in sensitive environments.
DGP12 SERIES
DUAL OUTPUT
FEATURES
Remote ON/OFF and TRIM
Five-Side Shielded Copper Case
Typical Efficiency up to 78%
Fully Isolated and Filtered
700V Isolation
Ultra Wide Range Input (4:1)
1
BOTTOM VIEW
SIDE VIEW
0.000
0.000
0.25
0.000
2.02
(51.31)
(6.35)
0.040 (1.02) DIA
7 PLACES
0.45
2.02
(11.43)
(51.31)
2
3
7
6
5
4
1.800
0.11
1.100
0.700
0.300
0.100
0.600
0.400
0.51
(7.62)
(2.54)
(13.0)
(17.78)
(15.24)
(10.16)
(27.94)
(45.72)
(2.8)
Mechanical tolerances unless otherwise noted:
X.XX dimensions: 0.020 inches
X.XXX dimensions: 0.005 inches
NOTES
(1)
All parameters measured at Tc = 25C, nominal input voltage and full rated load unless otherwise noted.
Refer to the Technical Reference Section for the definition of terms, measurement circuits and other
information.
(2)
See the DGP12 Series Application Notes for more information on applying the ON/OFF pin.
(3)
The Case is tied to the -Input pin.
(4)
The functional temperature range is intended to give an additional data point for use in evaluating this
power supply. At the low functional temperature the power supply will function with no side effects,
however, sustained operation at the high functional temperature will reduce expected operational life.
The data sheet specifications are not guaranteed beyond the case operating range.
(5)
The case thermal impedance is specified as the case temperature rise over ambient per package watt
dissipated.
(6)
Output power is reduced at 3.5V input. See DGP12 Series Application Notes for specific
Derating guidelines
Rev. 04/2000
NUCLEAR AND MEDICAL APPLICATIONS Power-One products are not authorized for use as critical components in life support systems, equipment used in hazardous environments,
or nuclear control systems without the express written consent of the President of Power-One, Inc.
TECHNICAL REVISIONS The appearance of products, including safety agency certifications pictured on labels, may change depending on the date manufactured. Specifications are
subject to change without notice.
2
NOTES
(1)
All parameters measured at Tc=25C, nominal input voltage and full rated load unless otherwise
noted. Refer to the Technical Reference Section for the definition of terms, measurement circuits and
other information.
(2)
Reduced output power available below 9 volts input. See DGP12 Series Applications Notes for more
information.
(3)
No minimum load required for operation.
(4)
Load regulation is defined for loading/unloading both outputs simultaneously. Load range is 25 to
100%.
(5)
Cross regulation is defined for loading/unloading one output while the other output is kept at full load.
Load range is 25 to 100%.
(6)
Short term stability is specified after a 30 minute warmup at full load, constant line and recording
the drift over a 24 hour period.
(7)
Noise is measured per Technical Reference Section. Measurement bandwidth is 0-20 MHz for peak-
peak measurements, 10 kHz to 1 MHz for RMS measurements. Output noise is measured with a
1F/35V Tantalum capacitor located 1" away from the converter to simulate PCB standard
decoupling.
DGP12 SERIES APPLICATION NOTES:
External Capacitance Requirements
No external capacitance is required for operation of the DGP12
Series. To meet the reflected ripple requirements of the converter,
an input impedance of less than 0.05 Ohms from DC to 100KHz
is required. If a capacitive input source is farther than 1" from the
converter, an additional capacitor may be required at the input
pins for proper operation. External output capacitance is not
required for operation, however it is recommended that 1 F to
10 F of tantalum and 0.001 to 0.1 F ceramic capacitance be
selected for reduced system noise. Additional output capacitance
may be added for increased filtering, but should not exceed 400 F.
Output Power
The available output power of the DGP12 Series is reduced when
operating below 9 volts. See Input Voltage Derating curve. Below
4.6 volts the output power is derated to 50% at 3.5 volts.
(continued next page)
DGP12 SERIES DUAL OUTPUT
3
DGP12 SERIES BLOCK DIAGRAM
5
SHIELDED ISOLATION TRANSFORMER
+
6
OUTPUT
7
TRIM
ISO AMP
LOW TC BANDGAP REFERENCE
FIVE SIDED SHIELDED COPPER CASE
+
2
INPUT
ON/OFF
1
3
+ INPUT
CURRENT
MODE
PWM
+
4
+ OUTPUT
+
CMN
50
4
6
8
10
12
60
70
80
90
100
OUTPUT POWER DERATING
AMBIENT TEMPERATURE
POWER OUTPUT
Typical Performance: (Tc=25C, Vin=Nom VDC, Rated Load)
APPLICATION NOTES (cont'd):
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.
Figure 1.
DGP12 SERIES DUAL OUTPUT
85
75
80
70
60
65
55
0
40
30
20
LINE = 16VDC
LINE = 5VDC
10
50
60
70
80
90 100
EFFICIENCY Vs. LOAD
LOAD (%)
EFFICIENCY (%)
85
80
75
70
55
60
65
50
4
12
14
10
8
100% FULL LOAD
50% FULL LOAD
6
16
EFFICIENCY Vs. LINE INPUT VOLTAGE
LINE INPUT (VOLTS)
EFFICIENCY (%)
6
4
5
3
1
2
0
0
8
6
4
100% LOAD
50% LOAD
2
10
12
14
16
INPUT CURRENT Vs. INPUT VOLTAGE
LINE INPUT (VOLTS)
INPUT CURRENT (AMPS)
2.5
2.0
1.5
0.5
1.0
0.0
3
11
9
7
100% LOAD
40% LOAD
75% LOAD
5
13
15
17
INPUT CURRENT Vs. LINE INPUT
LINE INPUT (VDC)
RMS INPUT CURRENT (AMPS)
110
100
80
90
50
60
70
40
3
11
9
7
5
13
15
17
POWER DERATING
LINE INPUT (VDC)
% AVAILABLE POWER
4
+OUT
7
TRIM
10K
LOAD
USING TRIMPOT
6
-OUT
4
+OUT
7
TRIM
TRIM
DOWN
TRIM
UP
LOAD
USING FIXED RESISTORS
6
-OUT
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