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Mean Well SD-350D-48 DC-DC Converter - 350W - 72~144V in 48V out 7.3A
Overview
SD-350D-48 is the 48V output model of this series: rated current 7.3A, rated power 350.4W, typical efficiency 89%.
Features
- 2:1 wide input range
- Protections: Short circuit / Overload / Over voltage / Over temperature
- 1500VAC I/O isolation
- Forced air cooling by built-in DC Fan
- 100% full load burn-in test
- 24V and 48V input voltage design refer to LVD
- 2 years warranty
Specifications
OUTPUT
- DC VOLTAGE
- 48V
- RATED CURRENT
- 7.3A
- CURRENT RANGE
- 0 ~ 7.3A
- RATED POWER
- 350.4W
- RIPPLE & NOISE (max.)Note.2
- 200mVp-p
- VOLTAGE ADJ. RANGE
- 43 ~ 53VDC
- VOLTAGE TOLERANCENote.3
- ±1.0%
- LINE REGULATION
- ±0.2%
- LOAD REGULATION
- ±1.0%
- SETUP, RISE TIME
- 300ms, 50ms at full load
INPUT
- VOLTAGE RANGE
- 72 ~144VDC
- EFFICIENCY (Typ.)
- 89%
- DC CURRENT (Typ.)
- 6A/96V
- INRUSH CURRENT (Typ.)
- 45A/96VDC
PROTECTION
- OVERLOAD
- 105 ~ 135% rated output power Protection type : Shut down o/p voltage, re-power on to recover
- OVER VOLTAGE
- 53 ~ 65V Protection type : Shut down o/p voltage, re-power on to recover
- OVER TEMPERATURE
- Shut down o/p voltage, recovers automatically after temperature goes down
ENVIRONMENT
- WORKING TEMP.
- -20 ~ +60℃ (Refer to "Derating Curve")
- WORKING HUMIDITY
- 20 ~ 90% RH non-condensing
- STORAGE TEMP., HUMIDITY
- -40 ~ +85℃, 10 ~ 95% RH
- TEMP. COEFFICIENT
- ±0.03%/℃ (0 ~ 50℃)
- VIBRATION
- 10 ~ 500Hz, 2G 10min./1cycle, 60min. each along X, Y, Z axes
SAFETY & EMC (Note 4)
- SAFETY STANDARDS
- IEC/BS EN/EN 62368-1, EAC TP TC 004 approved, design refer to AS/NZS 62368.1
- WITHSTAND VOLTAGE
- I/P-O/P:1.5KVAC I/P-FG:2KVAC O/P-FG:0.5KVAC
- ISOLATION RESISTANCE
- I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH
- EMC EMISSION
- Compliance to BS EN/EN55022 (CISPR22) Class B, EAC TP TC 020
- EMC IMMUNITY
- Compliance to BS EN/EN61000-4-2,3,4,6,8, BS EN/EN55035, light industry level, EAC TP TC 020
OTHERS
- MTBF
- 1705.6K hrs min. Telcordia SR-332 (Bellcore) ; 263.9K hrs min. MIL-HDBK-217F (25℃)
- DIMENSION
- 215*115*50mm (L*W*H)
- PACKING
- 1.1Kg; 12pcs/14.4Kg/0.9CUFT
Test conditions and notes5
- 1. All parameters NOT specially mentioned are measured at 24,48,96VDC input, rated load and 25℃ of ambient temperature.
- 2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1μF & 47μF parallel capacitor.
- 3. Tolerance : includes set up tolerance, line regulation and load regulation.
- 4. The power supply is considered a component which will be installed into a final equipment. All the EMC tests are been executed by mounting the unit on a 360mm*360mm metal plate with 1mm of thickness. The final equipment must be re-confirmed that it still meets EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.” (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf )
- 5. The ambient temperature derating of 3.5℃/1000m with fanless models and of 5℃/1000m with fan models for operating altitude higher than 2000m(6500ft).
Technical drawings
Downloads
FAQ
Can I use the SD-350D-48 to power a 48V telecom or network appliance from a 72-144V DC source?
Yes, it is a constant-voltage DC-DC converter with a 48V output rated at 7.3A and 350.4W. That makes it a fit for equipment that specifically requires 48V DC and stays within the 7.3A output limit.
Is the SD-350D-48 suitable for industrial control equipment that runs on 48V DC?
It can be used for industrial control loads that require a regulated 48V output and draw no more than 350.4W or 7.3A. The unit is designed for constant-voltage output and accepts a 72-144V input range.
Can this converter support embedded or automation systems with a 48V DC bus?
It is appropriate for embedded or automation systems that need 48V DC and fit within the converter's 350.4W capacity. Its 2:1 wide input range and 1.5KVAC input-output isolation (2KVAC input to FG) are useful in higher-voltage DC systems.
Is the SD-350D-48 suitable for outdoor or harsh-environment use?
The provided specs list an operating temperature range of -20°C to +60°C, but they do not list an IP rating. That means the temperature range is specified, while exposed outdoor or washdown suitability is not established by the listed specs.
How does the SD-350D-48 compare with the other SD-350D models?
Within the SD-350D group, the SD-350D-5 is 300W at 5V and 60A, the SD-350D-12 is 350.4W at 12V and 29.2A, the SD-350D-24 is 350.4W at 24V and 14.6A, and the SD-350D-48 is 350.4W at 48V and 7.3A. All are DC-DC converters in the same family, but the output voltage and current ratings differ by model.
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