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LFS Series Low Noise AC/DC Supply (10mV@50W,10-13mV@150W)

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The LFS series Low Noise switching power supply is a solution for engineers and applications requiring very low noise for sensitive applications. Available in LFS50A and LFS150A models, these units provide high efficiency and power output in a small and lightweight housing. Our low-noise switching power supplies are a reliable alternative to linear power supplies, offering low conduction noise and minimal EMI to simplify system-level EMI design.

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  • Medical Power Supply
  • 50W & 150W Single Channel         
  • 5/12/15/24/30/48 VDCout
  • 10mVp-p Ripple Noise Typ
  • ROHS Compliant
  • Remote Sensing
  • Remote Control
  • EN60601-1 Certified 
  • 4KV Reinforced Insulation
  • DE Marking, Nemko, PSE
  • Manufacturing ISO 9001:2008 certified      
  • UL60950-1, file #E237238
  • UL 60601-1, file #E320635
  • 50W
  • PFC (100-240VAC input voltage range): 30-270kHz
  • DCDC (0-100% current load range)  5V: 90kHz-150kHz, 12-48V: 90kHz-120kHz
  • 150W
  • PFC (100-240VAC input voltage range):  40-230kHz
  • DCDC (0-100% current load range)  5V: 50kHz-120kHz, 12-24V: 50kHz-90kHz, 30V: 60kHz-100kHz, 48V: 90kHz-130kHz
 
  • LFS50A-5
  • LFS50A-12
  • LFS50A-15
  • LFS50A-24
  • LFS50A-30
  • LFS50A-48
  • LFS150A-5
  • LFS150A-12
  • LFS150A-15
  • LFS150A-24
  • LFS150A-30
  • LFS150A-48

LFS Series Low Noise AC/DC Power Supplies

The LFS Series includes the LFS50A and LFS150A models of low-noise switching power supplies designed for noise-sensitive applications. Their compact, lightweight design maximizes efficiency and provides high reliability, while the low ripple, low EMI, and very low leakage current (≤0.15mA at 264Vac) make them ideal replacements for linear power supplies. LFS Series power supplies are often used in medical, biotech, testing, and measurement environments.

Key Features of the LFS Series

  • Compliant with IEC 60601-1 medical safety standards
  • Ultra-low ripple and noise
  • Very low leakage current (≤0.15mA at 264Vac)
  • Low conducted and radiated emissions
  • Wide input voltage range (85–264Vac)
  • Convection cooling
  • Remote sensing, remote on/off control, and remote voltage adjustment
  • LED operation indicator
  • EMC & immunity compliant (EN55022-B, FCC-B, VCCI-B, EN61000 series)
  • Certified to UL60950-1, EN60601-1, CE, PSE

Differences Between the LFS50A and the LFS150A Low Noise Power Supplies

LFS50A Series

The LFS50A series offers a range of compact low-noise power solutions with a maximum output power of up to 52.8W. These units are ideal for applications requiring a smaller footprint while maintaining excellent performance.

LFS150A Series

The LFS150A series provides a higher power output of up to 153.6W while still maintaining the ultra-low noise characteristics of the LFS family. These models are designed for more demanding applications that require higher power delivery.

LFS50A vs. LFS150A Power Output Comparison

Series Output Voltages (VDC) Max Output Power (W) Output Current Range (A)
LFS50A 5, 12, 15, 24, 30, 48 Up to 52.8 1.1 – 10
LFS150A 5, 12, 15, 24, 30, 48 Up to 153.6 3.2 – 20
 
 

LFS50A vs. LFS150A Series Key Features Comparison

Feature LFS50A LFS150A
Max Output Power Up to 52.8W Up to 153.6W
Efficiency (Typical) Up to 90% Up to 90%
Typical Ripple Noise 10mVp-p 13mVp-p
Input Current (100V) 0.7A 1.9A
Input Current (200V) 0.4A 1.0A
Dimensions (W×H×L) 82×40×141 mm 82×42×178.5 mm
Weight (Approximate) 400g 600g

Contact Us to Learn How Daitron Can Be Your Supplier for LFS Series Low Noise Power Supplies

Daitron Incorporated is a premier manufacturer and distributor of low-noise power supply solutions. For more information, please contact us online or request a quote. Looking for other commercial-grade low-noise AC/DC power supply products? Explore our selection of PFS Series and RFS Series power supplies. Daitron is your source for LFS Series low-noise power supplies.