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DFC25E24S5 Datasheet Preview

DFC25E24S5 Datasheet

SINGLE OUTPUT

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DFC25 SERIES
SINGLE OUTPUT
DESCRIPTION
The DFC25 Series DC/DC converter provides tightly regulated
output voltages for industrial and datacom applications from 12, 24,
or 48 Volt inputs. Available output power ranges from 24.75 to 30
watts. Excellent noise performance is attained via an aluminum case,
toroidal magnetics, and double shielded transformers. Common
mode and differential mode input filtering is integral to the design.
Selected models provide 1544 volts isolation from the input to output.
The input and output sections of the DFC25 Series are protected
from overvoltage transients via internal circuitry. Same voltage
models of the DFC25 family may be connected in parallel to
achieve additional output current.
Model
DFC25E12S3.3
DFC25E24S5
DFC25E48S5
DFC25E48S12
Selection Chart
Input Range Output
VDC VDC
Min Max Nominal
9 18
3.3
18 36
5
36 72
5
36 72
12
Output
mA MAX
7500
6000
6000
2500
2.75
(70.0)
FEATURES
• Up to 30 Watts Output Power
• Remote ON/OFF
• Common and Differential Mode Input Filters
• +3.3, +5V, or +12V Outputs
• Remote Voltage Sense
• Efficiencies to 81%
• Operation from -25°C to 85°C
• 700/1544V Isolation
• Two Year Warranty
• UL/CSA/TÜV
BOTTOM VIEW
2.50
(63.5)
98
7 65
SIDE VIEW
0.040 (1.02) DIA
6 PLACES
3.00
(76.2)
General Specifications (1)
All Models
Isolation (3)
Isolation Voltage
Input to Output
12V, 24V Input
48V Input
10µA Leakage
MIN
MIN
700
1544
Input to Output Capacitance TYP
700
Remote ON/OFF
ON Logic Level or Pin Open MIN
2.5
Off Logic Level or Tie to -Input MAX
0.7
Converter Idle Current TYP 10
Output Trim Function
Input Resistance
TYP 40
Programming Range
MIN ±10
Environmental
Case Operating Range (2)
MIN
MAX
-25
+60
Case Functional Range
MIN
MAX
-40
+105
Storage Range
MIN -45
MAX +105
Thermal Impedance
TYP 10
General
MTBF (Calculated)
TYP 1,000,000
Unit Weight
TYP 2.6/71
Units
Volts
pF
Volts
Volts
mA
k
%
°C
°C
°C
°C/Watt
Hours
oz/gm
0.25
12
4
(6.3)
0.00
PIN CONNECTIONS
PIN NUMBER
PIN OUT
1 -INPUT
2 +INPUT
3 N/C
4 ON/OFF
5 TRIM
6 +OUTPUT
7 -OUTPUT
8 N/C
9 N/C
NOTE: All pins are 0.040"
diameter brass with tin plating.
Mechanical tolerances unless
otherwise noted:
X.XX dimensions: ±0.020 inches
X.XXX dimensions: ±0.005 inches
NOTES
(1) All parameters measured at 25°C, nominal input voltage, and
full rated load unless otherwise noted.
(2) Derate linearly to 0 Watts at 105°C ambient. Operation to +70°C
ambient with externally supplied forced air cooling, 100LFM.
(3) Case is tied to -Input, Pin 1.
Rev. 04/2000
1




Power-One

DFC25E24S5 Datasheet Preview

DFC25E24S5 Datasheet

SINGLE OUTPUT

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Model
Reflected Ripple (2)
Input Current
Full Load
No Load
Inrush Current (4)
Efficiency
Switching Frequency
Maximum Input
Overvoltage,
100ms Maximum
Turn-on Time,
1% Output Error
TYP
TYP
TYP
MAX
TYP
TYP
MAX
TYP
DFC25 SERIES – SINGLE OUTPUT
DFC25E12S3.3
330
Input Parameters (1)
DFC25E24S5
230
DFC25E48S5
150
2870
100
50
72
150
24
1563
10
50
80
150
45
781
10
50
80
150
85
10 10
10
DFC25E48S12
150
762
10
50
82
150
85
10
Units
mAPP
mA
APK
%
kHz
VDC
ms
Model
Output Voltage
Output Voltage Accuracy
Rated Load Range
Load Regulation
10% Load - Max Load
Line Regulation
Vin = Min-Max VDC
Transient Response
25% Load Step (5)
Short Term Stability (3)
Long Term Stability
Input Ripple Rejection
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
Output Parameters (1)
DFC25E12S3.3
DFC25E24S5
3.3 5
3.26 5.05
3.30 5.10
3.33 5.15
0.75 0.60
7.50 6.00
11
DFC25E48S5
5
5.05
5.10
5.15
0.60
6.00
1
0.2 0.2 0.2
2
<0.05
<0.1
>40
75
100
22
<0.05
<0.1
>40
75
100
<0.05
<0.1
>40
75
100
Continuous, Current Limit Protection
DFC25E48S12
12
11.90
12.00
12.10
0.25
2.50
1
0.2
2
<0.05
<0.1
>40
75
100
Units
VDC
VDC
A
%
%
%
%/24Hrs
%/kHrs
dB
mVPP
ppm/°C
NOTES
(1) 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
he drift over a 24 hour period.
(4) Per ETSI-300-132
(5) Recovery to within 1% in less than 1 millisecond after transient has been applied.
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 use 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.
2


Part Number DFC25E24S5
Description SINGLE OUTPUT
Maker Power-One
Total Page 2 Pages
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