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DFC25E48T5

DFC25 SERIES TRIPLE OUTPUT

Power-One Inc. 

DFC25 SERIES – TRIPLE OUTPUT

Model

Reflected Ripple (2)

Input Current

Full Load

No Load

Inrush Current (5)

Efficiency

Switching Frequency

Maximum Input

Overvoltage,

100ms Maximum

Turn-on Time,

1% Output Error

TYP

TYP

TYP

MAX

TYP

TYP

MAX

TYP

DFC25E24T5/12

230

Input Parameters (1)

DFC25E24T5/15

230

DFC25E48T3.3/12

150

1563

1563

890

10

10

10

50

50

50

80

80

78

150

150

150

45

45

85

10

10

10

DFC25E48T5/12

150

781

10

50

80

150

85

10

Units

mAPP

mA

APK

%

kHz

VDC

mS

Output Parameters (1)

Model

Output (8)

Output Voltage

Output Voltage Accuracy

Rated Load Range

Load Regulation

25% Load - Max Load

Line Regulation

Vin = Min-Max VDC

Cross Regulation

25% Load - Max Load (6)

Transient Response

25% Load Step (7)

Short Term Stability (3)

Long Term Stability

Input Ripple Rejection (4)

Noise, Peak - Peak (2)

Temperature Coefficient

Short Circuit Protection

from +OUT to -OUT

MIN

TYP

MAX

MIN

MAX

TYP

TYP

TYP

TYP

TYP

TYP

TYP

TYP

TYP

DFC25EXXT3.3/XX

V1

3.3

3.27

3.30

3.33

0.5

5.0

1.0

DFC25EXXT5/XX

V1

5

5.05

5.10

5.15

0.5

5.0

1.0

DFC25EXXTX/12

V2,V3

12

11.88

12.00

12.12

0.0

1.0

8.0

DFC25EXXTX/15

V2,V3

15

14.85

15.00

15.15

0.0

0.8

8.0

Units

VDC

VDC

A

%

0.2

0.2

3.0

3.0

%

3.0

3.0

8.0

8.0

%

2

2

2

2

<0.05

<0.1

>40

75

100

<0.05

<0.05

<0.1

<0.1

>40

>40

75

120

100

300

Continuous Current Limit Protection on 3.3V or 5V outputs,

Momentary Current Limit Protection on 12V or 15V outputs

<0.05

<0.1

>40

150

300

%

%/24Hrs

%/kHrs

dB

mVPP

ppm/°C

NOTES

(1) All All parameters measured at Tc=25°C, nominal input voltage and full rated load unless otherwise

noted.

(2) Measurement bandwidth is 0-20 MHz for peak-peak measurements, 10 kHz to 1 MHz for RMS

measurements. Output noise is measured with a 0.01µF/100V ceramic capacitor in parallel with a

1µF/35V Tantalum capacitor, 1 inch from the output pins to simulate standard PCB decoupling

capacitance.

(3) Short term stability is specified after a 30 minute warm-up at full load, constant line and recording

the drift over a 24 hour period.

(4) The transient response is specified as the time required to settle from a 50 to 75% step load change

(rise time of step = 2µSec) to a 1% error band.

(5) Per ETSI-300-132

(6) Change to main channel output for a 25% to 100% change on dual outputs or change on dual

channel outputs due to a 25% to 100% change on the main channel output.

(7) Recovery to within 1% in less than 1 millisecond after transient has been applied.

(8) V3 is defined as the minus, or negative output. Values in the chart are shown as positive for V2, and

can be assumed negative for V3.

DFC25 SERIES APPLICATION NOTES:

External Capacitance Requirements

A low ESR external capacitance is required for operation of the DFC25 Series. For maximum

performance, it is recommended that the DFC25 Series uses a capacitor of sufficient ripple current

capacity connected across the input pins, especially 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 at 200 kHz is required. External output capacitance is not required for

operation, however it is recommended that 1µF to 10µF of Tantalum and 0.001 to 0.1µF ceramic

capacitance be selected for each output to reduce system noise. Additional output capacitance may

be added for increased filtering, but should not exceed 400µF.

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 TTL compatible circuitry. 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, this input may be driven 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 +6 volts applied.

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.

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