Datasheet DGP20E48T5-15, DGP20E48T5-12, DGP20E24T5-15, DGP20E24T5-12, DGP20E12T5-15 Datasheet (Power-one)

1

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)

DGP20 SERIES

TRIPLE OUTPUT

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.

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)

Rev. 04/2000

2

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.

(2) 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.

(3) Optimum performance is obtained when this power supply is operated within the minimum to

maximum load specifications.

(4) Output regulation is specified by simultaneously changing from minimum to maximum load and

noting the change in each output.

(5) 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.

(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.

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

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.

3

DGP20 SERIES BLOCK DIAGRAM

4

+12/15V OUTPUT

+5V OUTPUT

SHIELDED ISOLATION TRANSFORMER

+

7

–12/15V OUTPUT

6

CMN

SHIELDED COPPER CASE

+

+

–

2

– INPUT

ON/OFF

1

3

+ INPUT

CURRENT

MODE

PWM

LOW
NOISE
FILTER

5

+

3.5

2.8

2.1

1.4

0.7

0.0
08

64

100% LOAD

50% LOAD

2101214 16 18

12 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE

LINE INPUT (VOLTS)

INPUT CURRENT (AMPS)

85

80

75

70

65

913

14 15 16 171211

100% FULL LOAD

50% FULL LOAD

10 18

12 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE

LINE INPUT (VOLTS)

EFFICIENCY (%)

90

85

80

75

70

65

040

3020

LINE = 18VDC

LINE = 9VDC
LINE = 12VDC

10 50 60 70 80 90 100

12 VOLT EFFICIENCY Vs. LOAD

LOAD (%)

EFFICIENCY (%)

2.0

1.5

1.0

0.5

0.0
016

128

100% LOAD

50% LOAD

4202428 32 36

24 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE

LINE INPUT (VOLTS)

INPUT CURRENT (AMPS)

90

85

80

75

70

18 26

28 30 32 342422

100% FULL LOAD

50% FULL LOAD

20 36

24 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE

LINE INPUT (VOLTS)

EFFICIENCY (%)

1.0

0.6

0.8

0.4

0.2

0.0
040

3020

100% LOAD

50% LOAD

10 50 60 70 80

48 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE

LINE INPUT (VOLTS)

INPUT CURRENT (AMPS)

90

85

80

75

70

65

60

36 52

56 60 64 684844

100% FULL LOAD

50% FULL LOAD

40 72

48 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE

LINE INPUT (VOLTS)

EFFICIENCY (%)

90

85

80

75

70

65

040

3020

LINE = 72VDC

LINE = 36VDC

LINE = 48VDC

10 50 60 70 80 90 100

48 VOLT EFFICIENCY Vs. LOAD

LOAD (%)

EFFICIENCY (%)

50

0

5

10

15

20

60 70 80 90 100

OUTPUT POWER DERATING

AMBIENT TEMPERATURE

POWER OUTPUT

DGP20 SERIES – TRIPLE OUTPUT

Typical Performance: (Tc=25°C, Vin=Nom VDC, Rated Load)

90

85

80

75

70

65

040

3020

LINE = 36VDC

LINE = 18VDC

LINE = 24VDC

10 50 60 70 80 90 100

24 VOLT EFFICIENCY Vs. LOAD

LOAD (%)

EFFICIENCY (%)

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.