DSP1 Single-Output DC-DC Series Data Sheet
Description
The DSP1 Series is specifically designed to convert a nominal 5 volt
input into an isolated output voltage. The semi-regulated output
voltages were designed to allow analog circuits and three terminal
regulators to operate within their most efficient input voltage range.
This series achieves high power densities through the use of
350kHz fixed frequency switching converters.
Features
• Up to 1 watt unregulated output power
• Single in line package
• Four-terminal operation
• Efficiencies to 75%
• 350kHz fixed frequency operation
• 700V isolation
• -40°C to +85°C operation
FRONT VIEW
0.40
(10.16)
Selection Chart
+IN
-IN
Model
DSP1NS5
DSP1NS7
DSP1NS12
DSP1NS14
DSP1NS15
DSP1NS17
(0.51)
0.000
Mi n
4 .5
4.5
4.5
4.5
4.5
4.5
Max
5.5
5.5
5.5
5.5
5.5
5.5
5
7
12
14
15
17
150
140
80
70
65
60
0.75
1.0
1.0
1.0
1.0
1.0
1
2
3
-OUT
Output
VDC
Output
mA
Power
W
4
+OUT
Input Range
VDC
0.02
0.000
0.200
(5.08)
0.100
(2.54)
0.77
(10.16)
General Specifications
(1)
All Models
Isolation
Isolation Voltage
Input to Output 10
µA
Input to Output
Capacitance
Environmental
Case Operating Range, Tc
(3)
Storage Range
Thermal Impedance (2)
General
MTBF (Calculated)
Unit Weight
Case Material
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.
The case Thermal Impedance is specified as the case temperature rise over ambient per package
dissipated.
Derate output power linearly to 0.6 watts from 70°c to 85°c.
Units
MIN
TYP
MIN
MAX
MIN
MAX
TY P
TYP
TYP
700
25
-40
+85
-55
105
58
VDC
pF
Mechanical tolerances unless otherwise noted:
X.XX dimensions: ±0.020 inches
X.XXX dimensions: ±0.010 inches
* This dimension to decrease to 0.24±0.01” (6.09±0.25) in 1998
** This dimension to decrease to 0.035±0.015” (0.89±0.38) in 1998
Pi n
1
2
3
4
Function
+INPUT
-INPUT
-OUT
+OUT
°C
°C
°
C/Watt
700,000
HRS
0.1 / 2.8
oz / gm
Non Conductive Plastic
(2)
(3)
REV. NOV 29, 2004
Page 1 of 3
www.power-one.com
(15.24)
(19.56)
0.400
0.600
DSP1 Single-Output DC-DC Series Data Sheet
Input Parameters
(1)
Model
Voltage Range
Reflected Ripple (2)
Input Current Full Load
No Load
Efficiency
Switching Frequency
MIN
MAX
TYP
TYP
TYP
TYP
TYP
DSP1N5S5
DSP1N5S7
DSP1N5S12
4.5
5.5
50
221
20
68
65
280
20
70
263
20
73
350
268
20
73
267
20
73
279
20
73
DSP1N5S14
DSP1N5S15
DSP1N5S17
Units
VD C
mA
p p
mA
%
kHz
Output Parameters (
1)
Model
Output Voltage
Output Voltage Accuracy (3)
Output Voltage, No Load
Rated Load Range
Load Regulation (4)
75% - 20% Load
75% - 100% Load
Line Regulation (5)
Noise, Peak - Peak (2)
Temperature Coefficient
MIN
TYP
MAX
TYP
MIN
MAX
TYP
T YP
TYP
TYP
TYP
DSP1N5S5
5
4.75
5.00
5.25
7
0
150
DSP1N5S7
7
6.65
7.00
7.35
10
0
140
DSP1N5S12
12
11.40
12.00
12.60
16
0
80
+8
-5
1.6
70
400
Momentary
DSP1N5S14
14
13.30
14.00
14.70
19
0
70
DSP1N5S15
15
14.25
15.00
15.75
21
0
65
DSP1N5S17
17
16.15
17.00
17.85
24
0
60
Units
VD C
VDC
VDC
mA
%
%
mV
PP
ppm/
°C
Short Circuit Protection to Common (6)
NOTES
(1) All parameters measured at Tc=25°C, nominal input voltage and full rated load unless otherwise
noted.
(2) Noise measurement bandwidth is 20 MHz. Input Reflected Ripple and output noise are
measured with an external 10µF/25V tantalum capacitor connected across the input and output
pins.
(3) Output Voltage Accuracy measured at 75% of maximum Rated Load.
(4) Load Regulations measured relative to 75% of maximum Rated Load Current.
(5) Line Regulation is for a 1.0% change in input Voltage.
(6) Use input fuse for protection. See Applying the input.
DSP1 Series Application Notes:
External Capacitance Requirements
Output filtering is required for operation. A minimum of 10 F
is specified for optimal performance. Output capacitance may
be increased for additional filtering, not to exceed 400 F. To
meet the reflected ripple requirements of the converter, an
input impedance of less than 0.5 Ohms from DC to 350KHz is
required. If a capacitive input source is farther than 2” from
the converter, it is recommended to use a 10 F, 25V solid
tantalum capacitor.
Regulation
This converter uses a semi-regulated design. The output will
vary as the load is changed, with output decreasing with
increasing load. See Output Voltage vs. Output Load curves.
Additionally, output voltage will change in proportion to a
change in input voltage. The typical output voltage will change
1.2% for each 1% change in input voltage.
Negative Outputs
A negative output voltage may be obtained by connecting the
+OUT to circuit ground and connecting -OUT as the negative
output.
REV. NOV 29, 2004
Page 2 of 3
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DSP1 Single-Output DC-DC Series Data Sheet
DSP1 SERIES BLOCK DIAGRAM
OUTPUT POWER DERATING
+ INPUT
1
4
OSCILLATOR
DRIVER
3
+ OUTPUT
POWER OUTPUT
1
- OUT
0.8
– INPUT
2
0.6
0.4
50
60
70
80
90
AMBIENT TEMPERATURE
100
Typical Performance: (Tc=25°C)
OUTPUT VOLTAGE Vs. OUTPUT LOAD
DSP1N5S5
5.80
7.90
OUTPUT VOLTAGE Vs. OUTPUT LOAD
DSP1N5S7
13.50
OUTPUT VOLTAGE Vs. OUTPUT LOAD
DSP1N5S12
OUTPUT VOLTAGE (VOLTS)
OUTPUT VOLTAGE (VOLTS)
5.60
5.40
5.20
5.00
4.80
4.60
0
40
80
120
160
OUTPUT VOLTAGE (VOLTS)
7.60
7.30
7.00
6.70
6.40
0
40
80
120
160
13.00
12.50
12.00
11.50
0
30
60
90
OUTPUT LOAD (mA)
OUTPUT VOLTAGE Vs. OUTPUT LOAD
DSP1N5S14
15.40
16.50
OUTPUT LOAD (mA)
OUTPUT VOLTAGE Vs. OUTPUT LOAD
DSP1N5S15
18.50
OUTPUT LOAD (mA)
OUTPUT VOLTAGE Vs. OUTPUT LOAD
DSP1N5S17
OUTPUT VOLTAGE (VOLTS)
OUTPUT VOLTAGE (VOLTS)
15.00
14.60
14.20
13.80
13.40
0
20
40
60
80
OUTPUT VOLTAGE (VOLTS)
15.90
18.00
17.50
17.00
16.50
16.00
0
20
40
60
80
15.30
14.70
14.10
0
20
40
60
80
OUTPUT LOAD (mA)
OUTPUT LOAD (mA)
OUTPUT LOAD (mA)
EFFICIENCY Vs. OUTPUT LOAD
80
12-17 VOLT OUTPUT
EFFICIENCY (%)
60
5-7 VOLT OUTPUT
40
20
16
0
20
40
60
80
100
% OF RATED LOAD (%)
NUCLEAR AND MEDICAL APPLICATIONS - Power-One products are not designed, intended for use in, or 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 respective
divisional 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. NOV 29, 2004
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