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DGP12 SERIES
DUAL OUTPUT
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 cm3). 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. 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)
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) 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
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.
Rev. 04/2000
1
0.45 (11.43)
0.000
DGP12 SERIES - DUAL 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. Reduced output power available below 9 volts input. See DGP12 Series Applications Notes for more information. No minimum load required for operation. Load regulation is defined for loading/unloading both outputs simultaneously. Load range is 25 to 100%. Cross regulation is defined for loading/unloading one output while the other output is kept at full load. Load range is 25 to 100%. Short term stability is specified after a 30 minute warmup at full load, constant line and recording the drift over a 24 hour period. 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/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)
(2) (3) (4) (5) (6) (7)
2
DGP12 SERIES - DUAL OUTPUT
DGP12 SERIES BLOCK DIAGRAM 4 +
SHIELDED ISOLATION TRANSFORMER + OUTPUT
OUTPUT POWER DERATING
12
POWER OUTPUT
5 +
+ INPUT
CMN
10
1 +
8
- INPUT
2
CURRENT MODE PWM
6 - OUTPUT + 7 TRIM
6
ON/OFF
3
-
ISO AMP
4 50 60 70 80 90 AMBIENT TEMPERATURE 100
FIVE SIDED SHIELDED COPPER CASE
LOW TC BANDGAP REFERENCE
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.
+OUT 4 TRIM 7 -OUT 6 USING TRIMPOT
Figure 1.
Typical Performance: (Tc=25C, Vin=Nom VDC, Rated Load)
EFFICIENCY Vs. LOAD
85 80 LINE = 16VDC 85 80 50% FULL LOAD
EFFICIENCY Vs. LINE INPUT VOLTAGE
EFFICIENCY (%)
EFFICIENCY (%)
75 LINE = 5VDC 70 65 60 55 0 10 20 30 40 50 60 70 80 90 100
75 70 65 60 55 50 4 6 8 10 12 14 16 100% FULL LOAD
LOAD (%)
LINE INPUT (VOLTS)
INPUT CURRENT Vs. INPUT VOLTAGE
6 5 4 3 2 1 50% LOAD 0 0 2 4 6 8 10 12 14 16 100% LOAD 2.5
INPUT CURRENT Vs. LINE INPUT RMS INPUT CURRENT (AMPS)
INPUT CURRENT (AMPS)
2.0 1.5
100% LOAD
75% LOAD 1.0 40% LOAD 0.5 0.0 3 5 7 9 11 13 15 17
LINE INPUT (VOLTS)
LINE INPUT (VDC)
POWER DERATING
110 100 90 80 70 60 50 40 3 5 7 9 11 13 15 17
+OUT 4 TRIM DOWN 10K LOAD TRIM 7 -OUT 6 USING FIXED RESISTORS LOAD TRIM UP
% AVAILABLE POWER
LINE INPUT (VDC)
3

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