MEAN WELL NSP-75 Series: 75W AC/DC High Reliability Multi-Industries Enclosed Type Power Supply
Model: NSP-75 Series
Overview
The NSP-75 series is a 75W AC/DC power supply with PFC function, designed for high reliability and suitability for multiple industries. It features a compact size (99*97*30 mm) for efficient space utilization, an ultra-wide input range of 85~305Vac for global compatibility, and low standby power consumption (<0.3W~0.5W) for energy saving. Key features include a constant current design with 200% peak power capability (for 12~60V models), a fanless design for quiet operation, and a wide operating temperature range from -40 to +85°C (with derating above +60°C). It offers compliance with OVCIII, built-in Remote Control, internal PCB coating, and comprehensive safety certifications for various fields including ITE, Medical, Household, and Industrial applications. With extremely low leakage current (<350μA) and 2 x MOPP compliance, it is suitable for BF-rated medical equipment. The series comes with a 5-year warranty, making it a cost-effective solution for industrial power supply needs.
Key Features:
- 85~305Vac input with PFC (277Vac available)
- No load power consumption <0.3W~0.5W
- Global certificates in multi-fields (ITE, Medical, Household, Industrial, Energy converter)
- 200% peak power capability (12~60V models)
- High efficiency up to 92%
- -40~85°C wide range operation temperature (> +60°C derating)
- Extremely low leakage current <350μA, 2 x MOPP, suitable for BF medical applications
- Built-in constant current limiting circuit
- Protections: Short circuit ⚡ / Overload ⚠️ / Over voltage ⚡ / Over temperature ?
- Fanless design for noise sensitive applications
- Built-in remote ON/OFF control
- Over voltage category III (OVC III)
- Operating altitude up to 5000 meters
- Conformal coating
- 5 years warranty
Applications:
- Industrial automation machinery/control system
- Security system
- Mechanical and electrical equipment
- Electronic instruments, equipments or apparatus
- Network equipment
- Telecom devices
- Power sourcing equipment of PoE
- Home automation
- Medical devices
Specifications
General Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 85~305Vac (120~431Vdc) |
| No Load Power Consumption | <0.3W~0.5W (Remote OFF), 2W (Remote ON) |
| Frequency Range | 47~63Hz |
| Power Factor (Typ.) | PF>0.98/115Vac, PF>0.93/230Vac, PF>0.9/277Vac (at full load) |
| Efficiency (Typ.) | 90.5% - 92% |
| AC Current (Typ.) | 0.8A/115Vac, 0.4A/230Vac, 0.35A/277Vac |
| Inrush Current (Typ.) | Cold Start: 20A/115Vac, 35A/230Vac, 45A/277Vac |
| Leakage Current | <350μA (Earth), <100μA (Touch) @277Vac |
| Protections | Short Circuit, Overload, Over Voltage, Over Temperature |
| Remote Control | POWER ON: 0~0.8Vdc or open; POWER OFF: 3.3~10Vdc |
| Working Temp. | -40~+85°C (Derating required above +60°C) |
| Working Humidity | 20~90% RH non-condensing |
| Storage Temp., Humidity | -40~+85°C, 10~95% RH non-condensing |
| Temp. Coefficient | ±0.05%/°C (0~60°C) |
| Vibration | 10~500Hz, 2G |
Output Specifications
| Parameter | NSP-75-5 | NSP-75-12 | NSP-75-15 | NSP-75-24 | NSP-75-27 | NSP-75-36 | NSP-75-48 | NSP-75-60 |
|---|---|---|---|---|---|---|---|---|
| DC Voltage | 5V | 12V | 15V | 24V | 27V | 36V | 48V | 60V |
| Rated Current | 15A | 6.3A | 5A | 3.2A | 2.8A | 2.1A | 1.6A | 1.3A |
| Current Range | 0~15A | 0~6.3A | 0~5A | 0~3.2A | 0~2.8A | 0~2.1A | 0~1.6A | 0~1.3A |
| Rated Power | 75W | 75.6W | 75W | 76.8W | 75.6W | 75.6W | 76.8W | 78W |
| Peak Current (5 sec.) | N/A | 12.5A | 10A | 6.3A | 5.6A | 4.2A | 3.2A | 2.5A |
| Peak Power (5 sec.) | N/A | 150W | 150W | 150W | 150W | 150W | 150W | 150W |
| Ripple & Noise (max.) | 150mVp-p | 150mVp-p | 150mVp-p | 200mVp-p | 240mVp-p | 240mVp-p | 240mVp-p | 300mVp-p |
| Voltage Adj. Range | 4.7~5.5V | 10.8~14V | 15~19V | 21~26V | 26~32V | 32~43V | 44~57V | 54~72V |
| Voltage Tolerance | ±2.0% | ±2.0% | ±2.0% | ±1.0% | ±1.0% | ±1.0% | ±1.0% | ±1.0% |
| Line Regulation | ±0.5% | ±0.5% | ±0.5% | ±0.5% | ±0.5% | ±0.5% | ±0.5% | ±0.5% |
| Load Regulation | ±1.0% | ±0.5% | ±0.5% | ±0.5% | ±0.5% | ±0.5% | ±0.5% | ±0.5% |
| Setup, Rise Time | 1500ms, 80ms/115Vac | 1000ms, 80ms/230Vac or 1000ms, 80ms/277Vac | ||||||
| Hold Up Time (Typ.) | 16ms at full load | |||||||
Safety and EMC
The NSP-75 series complies with numerous international safety and EMC standards, including:
- Safety Standards: IEC62368-1, IEC60335-1, IEC61558-1/-2-16, IEC61010-1/-2-201, IEC60601-1, IEC62477-1, BS EN/EN equivalents, UL62368-1, ANSI/AAMI ES60601-1, AS/NZS 62368-1, GB4943.1, CNS15598-1, KC62368-1, IS13252.
- Isolation Level: Primary-Secondary: 2xMOPP, Primary-Earth: 1xMOPP, Secondary-Earth: 1xMOPP.
- Over Voltage Category (OVC): OVC III (up to 2000m), OVC II (up to 5000m depending on standard).
- Safety Extra-Low Voltage (SELV): Compliant with relevant standards for 5~36V outputs.
- Withstand Voltage: 4.2KVac (I/P-O/P), 2.1KVac (I/P-FG), 1.5KVac (O/P-FG).
- Isolation Resistance: >100M Ohms at 500VDC.
- EMC Emission: Complies with Class B for Conducted and Radiated emissions (e.g., BS EN/EN55032, CISPR32). Harmonic Current and Voltage Flicker compliance also specified.
- EMC Immunity: Meets standards like BS EN/EN61000-4-2 (ESD), -4-3 (Radiated), -4-4 (EFT/Burst), -4-5 (Surge), -4-6 (Conducted), -4-8 (Magnetic Field), and -4-11 (Voltage Dips/Interruptions) with specified test levels.
MTBF: Minimum 2163.5 K hrs (Telcordia SR-332) or 250.4 K hrs (MIL-HDBK-217F at 25°C).
Functional Description
Block Diagram
The power supply operates with an input stage including EMI Filter and Rectifiers, followed by a PFC Circuit. Power Switching is controlled by PWM & PFC Control. The output stage consists of Rectifiers & Filter, feeding into a Constant Current & Detection Circuit that monitors Overload (OLP), Over Temperature (OTP), and Over Voltage (OVP) conditions. A Remote Control (R.C.) function is also integrated.
Key frequencies: PFC fosc: 110KHz, PWM fosc: 80KHz.
Output terminals are +Vo, -Vo, and R.C.
Peak Power Capability
The NSP-75 series can provide peak power for short durations. The average output power (Pav) is calculated based on peak output power (Ppk), non-peak output power (Pnpk), peak power width (t), and period (T). The duty cycle for peak power is limited (e.g., ≤ 35% for t ≤ 5 sec). For example, a 24V model can deliver 150W (200% of rated power) for up to 5 seconds with a duty cycle of 5%, provided the non-peak power is less than 71W.
Note: When the output voltage is adjusted to its upper limit, the peak power capability is 150% of the rated power.
Remote Control Function
The power supply can be turned ON/OFF remotely using an external switch and an auxiliary power source.
- POWER ON: Maintain the RC+ and RC- terminals between 0~0.8Vdc or leave them open.
- POWER OFF: Apply 3.3~10Vdc between RC+ and RC- using an external voltage source.
Performance Characteristics
Derating Curves
Derating Curve (100/110/115/120Vac System, 85~135Vac): The graph shows that the load capacity (in %) is reduced at ambient temperatures above 50°C, with full load (100%) available up to approximately 45-50°C, and derating occurring towards 85°C. Peak power (up to 150% or 200%) is available for shorter durations within specific temperature ranges.
Derating Curve (220/230/240/277Vac System, 180~305Vac): The graph indicates that full load (100%) is available up to approximately 70°C, with derating occurring towards 85°C. Peak power is also available within specified limits.
Note: Below 100Vac at -30°C, a restart situation may occur within 3 seconds after power-on.
Output Derating vs. Input Voltage
The graph illustrates that the output load capacity (in %) remains at 100% across the typical input voltage range from 85Vac up to 305Vac, indicating stable performance across the wide input range.
Mechanical Specifications
Dimensions: 99mm (Length) x 97mm (Width) x 30mm (Height).
Mounting: Features M3 mounting holes for secure installation.
Input Terminal Pin Assignment:
- Pin 1: AC/L or DC input +Vin
- Pin 2: AC/N or DC input -Vin
- Pin 3: FG (Frame Ground)
DC Output Terminal Pin Assignment:
- Pin 4: -Vo
- Pin 5: +Vo
Remote ON/OFF Terminal: JST S2B-XH or equivalent connector.
- Pin 1: RC+
- Pin 2: RC-
Mounting Torque: 4~5 Kgf.cm for M3 screws.
Packing: 0.3Kg per unit; 45 units per carton (13.9Kg, 0.91 CUFT).
Accessories
- Standard Accessory: Control function interface (CN1) mating wire (UL1007 28AWG), 50±5mm length.
- Optional Accessory (By request): Terminal cover (MW's Order NO.: PEE4TBC-03, PEE4TBC-02).
Distributor Information
Sager Electronics is an authorized distributor of MEAN WELL. For price and availability, visit www.sager.com or contact their sales representative or customer service at customerservice@sager.com.
