DFA20E24S12 POWER ONE, DFA20E24S12 Datasheet
DFA20E24S12
Manufacturer Part Number
DFA20E24S12
Description
CONVERTER DC-DC 20W 24V/12V SGL
Manufacturer
POWER ONE
Series
DFA20r
Type
Isolatedr
Specifications of DFA20E24S12
Output
12V
Number Of Outputs
1
Power (watts)
20W
Mounting Type
Through Hole
Voltage - Input
18 ~ 36V
Package / Case
7-DIP Module
1st Output
12 VDC @ 1.7A
Size / Dimension
2.02" L x 2.02" W x 0.45" H (51.3mm x 51.3mm x 11.4mm)
Power (watts) - Rated
20W
Operating Temperature
-50°C ~ 100°C
Efficiency
85%
Approvals
CE, cUL, EN, TUV, UL
Output Power
20W
Output Current
1.7A
Input Voltage
24V
Output Voltage
12V
Screening Level
Industrial
Product Length (mm)
51.31mm
Product Height (mm)
11.43mm
Product Depth (mm)
51.31mm
Mounting Style
Through Hole
Pin Count
7
Product
Isolated
Input Voltage Range
18 V to 36 V
Output Voltage (channel 1)
12 V
Output Current (channel 1)
1700 mA
Isolation Voltage
700 V
Package / Case Size
DIP
Output Type
Isolated
Brand/series
DFA20 Series
Configuration
Encapsulated
Current, Output
1700 mA
Dimensions
2.02 in. W x 2.02 in. H
Operation
Switching
Power, Output
20 W
Primary Type
DC-DC Converter
Special Features
Remote On/Off, Trim
Temperature, Operating, Maximum
+85 °C
Temperature, Operating, Minimum
-40 °C
Voltage, Input
36 VDC
Voltage, Output
12 VDC
Voltage, Output, Accuracy
12 VDC (Typ.)
Extended Range Input (2
1)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
3rd Output
-
2nd Output
-
4th Output
-
Lead Free Status / Rohs Status
Not Compliant
Other names
179-1038
Description
Mechanical tolerances unless otherwise noted:
X.XX dimensions: ±0.020 inches
X.XXX dimensions: ±0.005 inches
MCD10079 Rev. 1.3, 15-Jun-10
The compact DFA20 Series provides power densities up
to 11 watts per cubic inch (0.67 watts per cm 3 ). Ideal for
battery-operated, industrial, medical control, and remote
data collection systems, this converter has fully-filtered
inputs and outputs. Complete overload protection with
independent pulse-by-pulse current limiting and an
overtemperature shutdown ensures reliable system
operation. The output of the converter is electrically
isolated, thereby allowing the output to be configured as
a positive or negative output voltage.
(17.78)
(15.24)
(10.16)
(13.0)
0.700
0.600
(7.62)
0.400
0.300
0.000
0.100
(2.54)
0.51
Model Selection
DFA20E12S3.3
DFA20E12S5
DFA20E12S12
DFA20E12S15
DFA20E24S3.3
DFA20E24S5
DFA20E24S12
DFA20E24S15
DFA20E48S12
Model
Pin
1
2
3
4
5
6
7
1
2
3
Model numbers highlighted in yellow or shaded are not
recommended for new designs.
Function
On/Off
No Pin
+Input
-Input
+Out
Trim
-Out
BOTTOM VIEW
(51.31)
Min
2.02
18
18
18
18
36
9
9
9
9
Input
VDC
Max
18
18
18
18
36
36
36
36
72
4
Output Output
5
6
7
VDC
(51.31)
3.3
3.3
12
15
12
15
12
2.02
NOTES:
(1) All parameters measured at Tc = 25°C, nominal input voltage and full-rated load unless otherwise
noted.
(2) The Case is tied to the -Input, Pin 2.
(3) 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.
(4) The case thermal impedance is specified as the case temperature rise over ambient per package
watt dissipated.
5
5
0.040 (1.02) DIA
6 PLACES
4000
4000
1700
1400
4000
4000
1700
1400
1700
mA
SIDE VIEW
DFA20 Single-Output DC-DC Series Data Sheet
Page 1 of 4
Features
• RoHS lead solder exemption compliant
• Remote On/Off and trim
• Overcurrent protection and thermal shutdown
• Efficiencies to 83%
• 700V isolation; up to 1544V
• Power density up to 11 Watts
• Five-sided, shielded case
on 48V converters
per cubic inch
ON/OFF Function
ON Logic Level
or Pin Open
OFF Logic Level
or Tie Pin to -Input
Open Circuit Voltage
Input Resistance
Converter Idle Current
ON/OFF Pin Lo w
Isolation (2 )
Isolation Voltage
Input-to-Output Capacitance
Output Trim Function
Tr im Range
Input Resistance
Open Circuit Voltage
En vi ronmental
Case Operating Range, Tc
Case Functional Range (3)
Storage Range
T hermal Shutdown
Case Temperature
T hermal Impedance (4)
General
MT BF (Calculated)
Unit Weight
12V Models
24V and 48V Models
Input to Output 12V, 24V
Input to Output 48V
No Derating
Chassis Mount ing Kit 12V, 24V
10μA Leakage
General Specifications (1)
48V
Al l Models
MAX
MAX
MAX
MAX
T YP
TYP
TYP
TYP
T YP
T YP
T YP
T YP
T YP
TYP
MIN
MIN
MIN
MIN
MIN
MIN
MIN
MIN
800,000
2.3 / 65
> 1.6
< 0.7
1544
www.power-one.com
700
290
100
105
105
2. 5
2. 5
-40
-50
-55
9. 5
20
±5
10
85
3
5
CM2B 1
CM2A 1
Unit s
oz / gm
kOhms
kOhms
C/Watt
VDC
V DC
VD C
VD C
VD C
mA
mA
Hrs
pF
%
C
C
C
C
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DFA20E24S12 Summary of contents
Page 1
... Min Max 9 18 DFA20E12S3 DFA20E12S5 9 18 DFA20E12S12 9 18 DFA20E12S15 18 36 DFA20E24S3 DFA20E24S5 18 36 DFA20E24S12 18 36 DFA20E24S15 36 72 DFA20E48S12 Model numbers highlighted in yellow or shaded are not recommended for new designs. BOTTOM VIEW 2.02 (51.31) 0.700 (17.78) 0.600 1 (15.24) 0.400 2 (10.16) 0.300 (7.62 ...
Page 2
... Continuous, with Thermal Protection Page DFA20E24S3.3 DFA20E12S15 DFA20E24S5 18 36 140 40 2.21 0.70 1. DFA20E48S12 0. DFA20E12S12 DFA20E24S12 DFA20E12S15 DFA20E48S12 DFA20E24S15 12 15 11.90 14.90 12.00 15.00 12.10 15.10 0.0 0.0 1.7 1.4 1 0.01 0.1 www.power-one.com Units VDC mApp mArms kHz VDC ms Units VDC ...
Page 3
DFA20 SERIES APPLICATION NOTES: External Capacitance Requirements No external capacitance is required for operation of the DFA20 Series. The use of input capacitors with less than 0.5 Ohms ESR may cause peaking in the input filter and degrade filter performance. ...
Page 4
Typical Performance: (Tc=25˚C, Vin=Nom VDC, Rated Load) 12 VOLT EFFICIENCY Vs. LOAD 85 LINE = 9VDC 80 LINE = 12VDC 75 LINE = 18VDC 100 LOAD (%) 24 ...