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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% * -40C to +85C 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 = 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) 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=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. Noise is measured per Technical Reference Section. Measurement bandwidth is 0-20 MHz for peakpeak measurements, 10 kHz to 1 MHz for RMS measurements. Output noise is measured with a 1F tantalum located 1" away from the converter to simulate PCB standard decoupling. Input reflected ripple is measured into a 1 H 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=25C, 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

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