Power-One DFA6U48S12 Single output Datasheet

DFA6 SERIES
SINGLE OUTPUT
FEATURES
DESCRIPTION
The DFA6 Series provides quick power conversion solutions to
analog and digital systems. Requires few external components.
The converters provide plug-and-play versatility. The series
features an input range of 3:1. The output is electrically isolated,
thereby allowing the output to be configured for positive or
negative output voltage. The DFA6 provides compact system
power in less than 2.3 square inches (14.8 cm2).
The DFA6 Series’ ultra-wide input and no load input current
(7mA) makes it well suited for battery operation in commercial
and industrial applications. Full overload protection is provided
by pulse-by-pulse current limiting.
• Up to 6 Watts Output Power
• Overcurrent Protection
• Efficiency to 83%
• Low Input to Output Capacitance
• 700V Isolation, Input to Output
• Ultra-Wide Input Range (3:1)
BOTTOM VIEW
2.12
(53.85)
0.300
(7.62)
SIDE VIEW
0.040 (1.02) DIA
4 PLACES
3
0.000
1
0.200
(5.08)
0.500
(12.70)
0.64
(16.3)
2
1.08
(27.43)
0.48
(12.19)
0.000
0.3
(7.62)
0.800
(20.32)
0.000
0.66
(16.8)
4
Mechanical tolerances unless otherwise noted:
X.XX dimensions: ±0.040 inches
X.XXX dimensions: ±0.010 inches
For the Most Up-To-Date Information
NOTES
(1)
(2)
www.power-one.com
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.
The case Thermal Impedance is specified as the case temperature rise over ambient per package
dissipated
24 Hours/Day—7 Days/Week
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
DFA6 SERIES – SINGLE OUTPUT
DFA6 SERIES APPLICATION NOTES:
NOTES
(1)
(2)
(3)
(4)
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.
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 1µf
/ 35V Tantalum capacitor, 1 inch from the output pins to simulate standard PCB decoupling
capacitance. Reflected Ripple is measured with the appropriate input capacitor, and into a 10 µH
source impedance. See application notes for input capacitor requirements.
Short term stability is specified after a 30 minute warmup at full load, constant line and recording
the drift over a 24 hour period.
The input ripple rejection is specified for DC to 120 Hz ripple with a modulation amplitude of 1%
of Vin.
External Capacitance Requirements
No external capacitance is required for operation of the DFC6 Series.
To meet the reflected ripple requirements of the converter, an input
impedance of less than 0.35 Ohms from DC to 250KHz 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 1F to 10F of tantalum and 0.001
to 0.1F ceramic capacitance be selected for reduced system noise.
Additional output capacitance may be added for increased filtering,
but should not exceed 400F.
Negative Outputs
A negative output voltage may be obtained by connecting the +OUT
to circuit ground and connecting -OUT as the negative output.
2
DFA6 SERIES – SINGLE OUTPUT
DFA6 SERIES BLOCK DIAGRAM
OUTPUT POWER DERATING
ISOLATION TRANSFORMER
6
3
+ OUTPUT
+ INPUT
1
– INPUT
2
4
CURRENT
MODE
PWM
5
POWER OUTPUT
+
- OUT
+
4
3
–
ISO AMP
2
LOW TC
BANDGAP
REFERENCE
60
70
80
90
AMBIENT TEMPERATURE
50
100
Typical Performance: (Tc=25°C, Vin=Nom VDC, Rated Load)
Data for 12 Volt Input Models
12 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE
12 VOLT EFFICIENCY Vs. LOAD
LINE = 12VDC
75
70
65
LINE = 27VDC
60
55
50
85
100% LOAD
0.75
EFFICIENCY (%)
LINE = 9VDC
INPUT CURRENT (AMPS)
EFFICIENCY (%)
80
12 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE
1.00
85
100% LOAD
0.50
50% LOAD
0.25
0.00
45
0
10
20
30
40
50
60
70
80
0
90 100
5
10
15
20
25
80
50% LOAD
75
70
30
5
10
LOAD (%)
20
15
LINE INPUT (VOLTS)
25
30
LINE INPUT (VOLTS)
Data for 48 Volt Input Models
LINE = 48VDC
75
70
65
LINE = 60VDC
60
55
50
45
0.5
90
0.4
85
EFFICIENCY (%)
EFFICIENCY (%)
INPUT CURRENT (AMPS)
LINE = 20VDC
80
100% LOAD
0.3
0.2
50% LOAD
10
20
30
40
50
60
LOAD (%)
70
80
90 100
A
100% LOAD
80
50% LOAD
75
70
0.1
0.0
40
0
48 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE
48 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE
48 VOLT EFFICIENCY Vs. LOAD
90
85
0
10
20
30
40
LINE INPUT (VOLTS)
3
50
60
65
20
30
40
LINE INPUT (VOLTS)
50
60
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