DSP1 SERIES
DUAL OUTPUT
DESCRIPTION
The DSP1 Series is specifically designed to convert a nominal 5
volt input into two isolated output voltages. The dual semiregulated output voltages are 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.
+IN
-IN
-OUT
+OUT
FRONT VIEW
RT
SIDE
VIEW
0.77
0.600
0.400
0.200
0.100
0.000
0.40
0.02
0.000
0.27
0.000
0.09
(2.54)
(5.08)
(10.16)
(15.24)
(19.56)
(0.51)
(10.16)
(6.86)
(2.29)
12 3 5
CMN
0.500
(12.70)
4
PINS: 0.02 (0.51) x 0.01 (0.25)
LENGTH (TYPICAL): 0.15 (3.81)
NOTES
(1) All parameters measured at Tc=25 °C case temperature, nominal input voltage and full rated load
unless otherwise noted.
(2) Derate output power linearly to 0.6 watts from 70°C to 85°C.
Mechanical tolerances unless otherwise noted:
X.XX dimensions: ±0.020 inches
X.XXX dimensions: ±0.010 inches
DSP1 SERIES APPLICATION NOTES:
External Capacitance Requirements
Output filtering is required for operation. A minimum of 10F is
specified for optimal performance. Output capacitance may be
increased for additional filtering, and should not exceed 400F. 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 10F, 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.
Additionally, output voltage will change in proportion to a change
in input voltage. The typical output voltage will change 1% for each
1% change in input voltage.
FEATURES
• Up to 1 Watt Unregulated Output Power
• Single In Line Package
• Four Terminal Operation
• Efficiencies to 70%
• Output Voltages: 5V, 7V, 12V, 14V, 15V, 17V
• 700V Isolation
• -40°C to +85°C Operation
1
Rev. 04/2000
50
0.4
0.6
0.8
1
60 70 80 90 100
OUTPUT POWER DERATING
AMBIENT TEMPERATURE
POWER OUTPUT
1
2
5
+ OUTPUT
– OUTPUT
CMN
+ INPUT
– INPUT
OSCILLATOR
DRIVER
4
3
DSP1 SERIES BLOCK DIAGRAM
Typical Performance: (Tc=25°C)
15
-15
-10
-5
0
5
10
4.50
4.75 5.00 5.25 5.50
LINE REGULATION
INPUT VOLTAGE (VDC)
NORMALIZED OUTPUT (%)
80
50
55
60
65
70
75
090
10 20 30 40 50 60 70 80 100
EFFICIENCY Vs. LOAD
LOAD (%)
EFFICIENCY (%)
10
-6
-4
-2
0
2
4
6
8
090
10 20 30 40 50 60 70 80 100
LOAD REGULATION
OUTPUT LOAD (%)
NORMALIZED OUTPUT (%)
0.30
0.00
0.05
0.10
0.15
0.20
0.25
0.0 5.0
4.50.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 5.5
INPUT CURRENT Vs. INPUT VOLTAGE
INPUT VOLTAGE (VDC)
INPUT CURRENT (AMPS)
DSP1 SERIES – DUAL OUTPUT
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2
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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