DGP20 SERIES
TRIPLE OUTPUT
DESCRIPTION
The DGP20 Series is a high performance 20 watt triple output
DC/DC converter designed for battery and telecom applications.
Power densities of up to 11 watts per cubic inch provides system
flexibility. The extended 2:1 input voltage range allows operation
over a wide variety of sources from 9 to 72 volts.
FEATURES
• Triple Outputs
• Five Sided Shielded Case
• Remote ON/OFF
• Efficiencies to 84%
• -40°C to +85°C Operation
• 700Volt Isolation
• Extended Range Input (2:1)
BOTTOM VIEW
2.02
(51.31)
SIDE VIEW
0.040 (1.02) DIA
7 PLACES
1.100
(27.94)
0.700
(17.78)
0.600
(15.24)
0.400
(10.16)
0.300
(7.62)
0.000
0.100
(2.54)
0.51
(13.0)
4
5
1
2
6
2.02
(51.31)
3
7
0.25
(6.35)
0.11
(2.8)
0.000
1.800
(45.72)
Mechanical tolerances unless otherwise noted:
X.XX dimensions: ±0.020 inches
X.XXX dimensions: ±0.005 inches
NOTES
(1) All parameters measured at Tc = 25°C, 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) 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.
(3) The case thermal impedance is specified as the case temperature rise over ambient per package watt
dissipated.
(4) Case is tied to-Input, Pin 2.
Rev. 04/2000
1
0.45
(11.43)
0.000
DGP20 SERIES – TRIPLE OUTPUT
NOTES
(1)
All parameters measured at Tc=25°C, 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.
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 1µF
tantalum located 1" away from the converter to simulate PCB standard decoupling. Input reflected ripple
is measured into a 1 µH source impedance.
Optimum performance is obtained when this power supply is operated within the minimum to
maximum load specifications.
Output regulation is specified by simultaneously changing from minimum to maximum load and
noting the change in each output.
Cross regulation is defined as the change in one output when the other output is changed from full
load to 25% of full load. The converter can be run at no load on either or both outputs with no
damage.
Short term stability is specified after a 30 minute warmup at full load, constant line and recording the
drift over a 24 hour period.
(2)
(3)
(4)
(5)
capacity connected across the input pins if a capacitive input source
is farther than 1” from the converter. To meet the reflected ripple
requirements of the converter, an input impedance of less than 0.09
Ohms from at 220KHz is required. 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.
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 should never be pulled more than 0.3
volts below -INPUT or have a voltage greater than +8 volts applied.
(6)
DGP20 SERIES APPLICATION NOTES:
External Capacitance Requirements
No external capacitance is required for operation of the DGP20
Series. However, for maximum performance, it is recommended
that the DGP20 Series use a capacitor of sufficient ripple current
2
DGP20 SERIES – TRIPLE OUTPUT
DGP20 SERIES BLOCK DIAGRAM
SHIELDED ISOLATION TRANSFORMER
OUTPUT POWER DERATING
20
5
+5V OUTPUT
+
15
+
6
LOW
NOISE
FILTER
CURRENT
MODE
PWM
CMN
– INPUT
2
+
ON/OFF
3
–
SHIELDED COPPER CASE
Typical Performance: (Tc=25°C, Vin=Nom VDC, Rated Load)
12 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE
3.5
12 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE
85
50% FULL LOAD
90
85
INPUT CURRENT (AMPS)
2.8
EFFICIENCY (%)
2.1
1.4
100% LOAD
100% FULL LOAD
75
EFFICIENCY (%)
80
50% LOAD
0.7
0.0
0
2
4
6
8
10
12
14
16
18
70
65
9
10
11
12
13
14
15
16
17
18
LINE INPUT (VOLTS)
24 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE
2.0
24 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE
90
50% FULL LOAD
90
85
INPUT CURRENT (AMPS)
EFFICIENCY (%)
EFFICIENCY (%)
1.5
85
1.0
100% LOAD
80
0.5
50% LOAD
0.0
0
4
8
12
16
20
24
28
32
36
75
70
18
20
LINE INPUT (VOLTS)
48 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE
1.0
48 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE
90
85
100% FULL LOAD
90
85
INPUT CURRENT (AMPS)
0.8
EFFICIENCY (%)
80
50% FULL LOAD
75
70
65
60
36
EFFICIENCY (%)
0.6
100% LOAD
0.4
0.2
50% LOAD
0.0
0
10
20
30
40
50
60
70
80
40
LINE INPUT (VOLTS)
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.
+
+ INPUT
1
POWER OUTPUT
4
+12/15V OUTPUT
10
7
–12/15V OUTPUT
5
0
50
60
70
80
90
AMBIENT TEMPERATURE
100
12 VOLT EFFICIENCY Vs. LOAD
LINE = 9VDC
LINE = 12VDC
80
75
70
65
0
LINE = 18VDC
10
20
30
40
50
60
70
80
90 100
LINE INPUT (VOLTS)
LOAD (%)
24 VOLT EFFICIENCY Vs. LOAD
LINE = 18VDC
100% FULL LOAD
80
75
70
65
LINE = 24VDC
LINE = 36VDC
22
24
26
28
30
32
34
36
0
10
20
30
40
50
60
70
80
90 100
LINE INPUT (VOLTS)
LOAD (%)
48 VOLT EFFICIENCY Vs. LOAD
80
75
70
LINE = 36VDC
LINE = 48VDC
LINE = 72VDC
65
44
48
52
56
60
64
68
72
0
10
20
30
40
50
60
70
80
90 100
LINE INPUT (VOLTS)
LOAD (%)
3
京公网安备 11010802033920号
EEWORLD
