SP & SPW Series
Rev. D
Single Output
50, 66, 75, and 100 Watts
Half Brick DC/DC Converter
FEATURES
●
CE Mark
●
100% Burn In
●
Isolated and Regulated
●
Wide Input Voltage Ranges
●
Fixed Operating Switching Frequency
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Short Circuit and Over Voltage Protected
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Input and Output Filtering Integral to Supply
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UL1950, cUL950, TUV EN60950 File E155800
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50, 66, 75, and 100 Watt Output Rating from Same Package
●
Industry Standard Package (2.28” x 2.4” x 0.5”) and Footprint
DESCRIPTION
The SP & SPW series of single output half brick DC/DC converters offers up to 100 watts of output power in an industry
standard package and footprint. It is intended to provide power and isolation for pc board and chassis mount applications
requiring high power density. Some features include wide input voltage ranges, positive or negative remote on/off, remote
sense, output trim, short circuit protection, and over voltage protection. Being encapsulated, these supplies have improved
thermal dissipation and protection for ruggedized environments. All models are 100% burned-in.
SPECIFICATIONS:
SP & SPW Series
All specifications apply @ 25°C ambient unless otherwise noted
INPUT SPECIFICATIONS
Input Voltage Range
SP........................... 24VDC nominal input ........................ 18 - 36 VDC
48VDC nominal input ........................ 36 - 75 VDC
SPW ....................... 48VDC nominal input ........................ 18 - 75 VDC
Input Filter ............................................................................... Pi input filter
Input Voltage Lockout ................ <16 >38VDC, <34 > 78VDC
(See Note 1)
Input Reflected Ripple.............................................. 20mAp-p
(See Note 2)
Remote ON/OFF Control
(See Note 12)
Standard........................Active High Enable (Positive Remote ON/OFF)
“R” suffix .......................Active Low Enable (Negative Remote ON/OFF)
PROTECTION SPECIFICATIONS
Short Circuit Protection................................................................ continuous
Over Voltage Protection ............... Approximately 120% Vout, self-resetting
Current Limiting Inception............................................ Approximately 125%
Thermal Overload...................................... +110°C baseplate, self-resetting
GENERAL SPECIFICATIONS
Efficiency .................................................................................... 85% typical
Switching Frequency (fixed) ................................................... 400kHz ±10%
Isolation Voltage
Input to Output ................................................................... 1500VDC min.
Input to Case ...............................................................................750VDC
Output to Case.............................................................................750VDC
Isolation Resistance (Input to Output) ............................................> 100MΩ
OUTPUT SPECIFICATIONS
Output Voltage ............................................................................. See table
External Output Trim (minimum) ........................................................ ±10%
Voltage Tolerance....................................................................... ±1% max.
Output Current ............................................................................. See table
Output Power ............................................................................... See table
Line Regulation ................................................................................. ±0.1%
Load Regulation ............................................................................... ±0.1%
Minimum load........................................................................ none required
Ripple/Noise (20MHz BW) ...................................... 1.5% Vout
(See note 3)
Remote Sense ..................................................Up to 0.5V power line drop
Transient Response..........................................................±5.0% deviation,
100µ/sec recovery to within ±1.0%
ENVIRONMENTAL SPECIFICATIONS
Operating Temperature ..................................... -40°C to +100°C baseplate
Storage Temperature ......................................................... -55°C to +125°C
Humidity (non-condensing)..................................................20% to 95% RH
Temperature Coefficient ........................................................ 0.01%/°C max
PHYSICAL SPECIFICATIONS
Weight .........................................................................Approximately 4.0 oz
Dimensions................................................ 2.28(L) x 2.4(W) x 0.5(H) inches
57.91(L) x 60.96(W) x 12.7(H) mm
Case Material ................................... non-metallic with aluminum baseplate
Due to advances in technology, specifications subject to change without notice
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
SP & SPW Series
Rev. D
Single Output
50, 66, 75, and 100 Watts
Half Brick DC/DC Converter
NOTES
1. Auto off power train protection.
2. For input reflected ripple of 20mA p-p, use an industry standard 12uH source impedance with a low ESR aluminum 33uf capacitor
across input.
3. Ripple & Noise is measured with a 10uf // 0.1uf across output.
4. All case, pin to case, and pin to header dimensions reference only unless otherwise noted.
5. Pin diameters are 0.04” except: those used for +Vout and -Vout are 0.08”. Pin length is 0.20” min.
6. Pin to pin tolerance ± 0.01”. Pin diameter tolerance ± 0.005”.
7. Significant capacitive load on output may inhibit start-up and operation, consult factory.
8. All DC/DC converters should be externally fused on the front end for protection.
9. Heatsinks available, consult factory.
10. 48VDC input with 48VDC output not available in 75 and 100 watt models.
11. Through-hole instead of threaded inserts available (0.125” diameter), add suffix “TH”
12. Positive Remote ON/OFF control is standard. To order negative logic Remote ON/OFF control add the suffix “R” to the part number
(Ex: SP48S48-100R).
MECHANICAL DRAWING
Unit: inches
(BOTTOM VIEW)
Tolerance: X.XX ±0.020
X.XXX±0.010
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
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