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AC/DC Power Supplies

Cincon LFM300S Series AC/DC Power Supply

The Cincon LFM300S Series is a compact, high-efficiency 300W AC-DC power supply designed for industrial and commercial applications requiring reliable single output DC power. Featuring a universal 85–264Vac input range and active PFC, the LFM300S delivers stable performance with efficiency up to 94%.

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Cincon_LFM300S_Series

Features

  • Input Voltage Range: 85–264Vac (Operating range: 100–240Vac)
  • Output Voltage Options: 12V, 15V, 24V, 28V, 30V, 48V, 54V
  • Maximum Output Current: Up to 25A (model dependent)
  • Over Voltage Protection: Latch-off (AC recycle to reset)
  • No load power consumption <0.3W
  • Over current protection (auto recovery)
Specifications
ABSOLUTE MAXIMUM RATINGS
Parameter Notes and Conditions
 Device
 Min.
 Typ.
 Max.
 Units
Input Voltage   All 85   264 Vac
Operating Temperature See derating curve All -40   80 ℃
Operating Case Temperature At the center of base plate
(T꜀ = Case temperature)		 All -40   90 ℃
Storage Temperature   All -40   90 ℃
Operating Altitude IEC/EN/UL 62368-1 OVC II
IEC/EN/UL 62368-1 OVC III		 All     5000
2000		 m
INPUT CHARACTERISTICS
Parameter Notes and Conditions
 Device Min.
 Typ.
 Max.
 Units
Operating Input Voltage   All 100   240 Vac
Input Frequency Range   All 47   63 Hz
Maximum Input Current 100% Load, Vᵢₙ=100Vac All     5.0 A
Leakage Current Contact leakage current
Earth leakage current		 All     100
300		 uA
Inrush Current Vᵢₙ=240Vac, Cold Start @25℃ All     105 A
Power Factor 230Vac @ Full load All   0.92    
OUTPUT CHARACTERISTICS
Parameter Notes and Conditions
 Device
 Min.
 Typ. Max.
 Units
Output Voltage Set Point

Vᵢₙ=Nominal Vᵢₙ, Iₒ= Iₒ_ₘₐₓ., T꜀=25℃

LFM300S120
LFM300S150
LFM300S240
LFM300S280
LFM300S300
LFM300S480
LFM300S540

 11.88
14.85
23.76
27.72
29.7
47.52
53.46		 12
15
24
28
30
48
54

12.12
15.15
24.24
28.28
30.3
48.48
54.54

 Vdc
Operating Output Current Range Vᵢₙ=85Vac-264Vac, see derating curve LFM300S120
LFM300S150
LFM300S240
LFM300S280
LFM300S300
LFM300S480
LFM300S540

0
0
0
0
0
0
0

   25.0
20.0
12.5
10.7
10.0
6.25
5.56		 A
Holdup Time Vᵢₙ=115Vac All   12   ms
Output Voltage Regulation
Load Regulation 10% Load to full load All     ±0.5 %
Line Regulation Vᵢₙ=High line to low line All     ±0.3 %
Output Voltage Adjustment Pₒ≦ₘₐₓ. rated power, Iₒ ≦ Iₒ_ₘₐₓ. All -5   +5 %
Over Voltage Protection Latch off (AC recycle to reset) LFM300S120
LFM300S150
LFM300S240
LFM300S280
LFM300S300
LFM300S480
LFM300S540		     16
20
32
35
36
59
63		 Vdc
Over Current Protection Auto recovery (output is rated load) All 110 120 150 %
Short Circuit Protection Auto recovery All        
Over Temperature Protection Auto recovery All        
Output Ripple and Noise 1. Add a 0.1uF ceramic capacitor and a 10uF aluminum electrolytic capacitor to output
2. Oscilloscope is 20MHz band width.
3. Ambient Temperature=25℃		 LFM300S120
LFM300S150
LFM300S240
LFM300S280
LFM300S300
LFM300S480
LFM300S540		     150
150
240
280
300
480
540		 mV
Load Capacitance 1. Vᵢₙ=115Vac and 230Vac
2. Output is max. load
3. Ambient temperature=25℃		 LFM300S120
LFM300S150
LFM300S240
LFM300S280
LFM300S300
LFM300S480
LFM300S540		     15400
12200
7800
6600
6200
3870
3400		 uF
Efficiency 1. Input Voltage is 230Vac
2. Output is rated load
3. Ambient temperature=25℃		 LFM300S120
LFM300S150
LFM300S240
LFM300S280
LFM300S300
LFM300S480
LFM300S540		   93
93
94
94
94
94
93		   %
ISOLATION CHARACTERISTICS
Parameter Notes and Conditions
 Device
 Min.
 Typ.
 Max.
 Units
Input to Output 1 Minute (without dielectric breakdown) All     4250 Vac
Input to Earth (Ground) 1 Minute (without dielectric breakdown) All     2000 Vac
Output to Earth (Ground) 1 Minute (without dielectric breakdown)

All

     2000 Vac
Isolation Resistance Input to output All 100     MΩ

 

FEATURE CHARACTERISTICS
Parameter Notes and Conditions
 Device
 Min.
 Typ.
 Max.
 Units
Switching Frequency Pₒᵤₜ=max. rated power

15V
Others

   100   kHz
GENERAL CHARACTERISTICS
Parameter Notes and Conditions
 Device
 Min.
 Typ.
 Max.
 Units
MTBF Iₒ=100%; Ta=25℃ per MIL-HDBK-217F
Iₒ=100%; Ta=25℃ per Telcordia SR332

All

 500
1690		     k hours
Life Time (Detail refer to Application Note) Conduction cooling @75% Load, 40℃
Fan cooling @75% Load, 40℃		 All   112
159		   k hours
Humidity Non-condensing All     93 % RH
Shock Meet MIL-STD-810F Table 516.5,Table 516.5-I 10ms, each axis 3 times(±X、±Y、±Z axis) All   75   g
Vibration Meet MIL-STD-810F Table 514.5C-VIII,15~2000Hz, X、Y、Z axis, 1 hour (each axis),. Total 3 hrs. All   4   g
Weight Baseplate versions
Covered versions		 All   200
280		   grams
Dimensions Baseplate versions
Covered versions		 All 4.04x2.00x1.00 Inches (102.6x50.8x25.4 mm)
4.09x2.28x1.00 Inches (104.0x57.9x25.4 mm)
Safety Class I, IEC/EN/UL 62368-1 Ed. 3.0
EMC Emission EN 55032, EN 61000-6-4, EN 61204-3, EN 61000-3-2, EN 61000-3-3, 47 CFR FCC Part 15  
Conducted Disturbance EN 55032, 47 CFR FCC Part 15 Class B
Radiated Disturbance EN 55032, 47 CFR FCC Part 15 Class B
Harmonic Current Emissions EN 61000-3-2 Class A, D
Voltage Fluctuations & Flicker EN 61000-3-3 Criterion A
EMC Immunity EN 55035, EN 61000-6-2, EN 61204-3
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3: Air Discharge: ±8kV, Level 2: Contact Discharge: ±4kV Criterion A
Radio-Frequency, Continuous Radiated Disturbance

 IEC 61000-4-3, Level 3: 80~1000MHz, 10V/m Criterion A
Electrical Fast Transient (EFT) IEC 61000-4-4, Level 3: ±2kV Criterion A
Surge IEC 61000-4-5, Level 4: L-N: ±2kV, L-E (Ground): ±4kV Criterion A
Conducted Disturbances, Induced by RF Fields IEC 61000-4-6, Level 3: 0.15~80MHz, 10V Criterion A
Power Frequency Magnetic Field IEC 61000-4-8, Level 4: 30A/m Criterion A
Voltage Dips IEC/EN 61000-4-11, Dip: 30% Reduction
IEC/EN 61000-4-11, Dip >95% Reduction		 Criterion A
Voltage Interruptions IEC/EN 61000-4-11, >95% Reduction Criterion B
Application Note Link                                                                                                              LFM300S Series App Notes
Selection Table
MODEL NUMBER OUTPUT VOLTAGE OUTPUT CURRENT RIPPLE & NOISE NOTE1 VOLTAGE ACCURACY NOTE2 VOLTAGE ADJ. RANGE LINE REGULATION NOTE3 LOAD REGULATION NOTE4 % EFF. (Typ.) NOTE5
With Fan NOTE6 With Conduction Cooling NOTE7
Baseplate Cover
LFM300S120

12 Vdc

 25 A 14.2 A 20.83 A 150 mV ±1% 11.4-12.6 V ±0.3% ±0.5% 93%

LFM300S150

15 Vdc

 20A 11.35 A 16.6 A 150 mV ±1% 14.25-15.75 V ±0.3% ±0.5% 93%
LFM300S240

24 Vdc

 12.5 A 7.1 A 10.4 A 240 mV ±1% 22.8-25.2 V ±0.3% ±0.5% 94%
LFM300S280

28 Vdc

 10.7 A 6.07 A 8.90 A 280 mV ±1% 26.6-29.4 V ±0.3% ±0.5% 94%
LFM300S300

30 Vdc

 10 A 5.67 A 8.33 A 300 mV ±1%

28.5-31.5 V

 ±0.3% ±0.5% 94%
LFM300S480

48 Vdc

 6.25 A 3.54 A 5.20 A 480 mV ±1% 45.6-50.4 V ±0.3% ±0.5% 94%
LFM300S540

54 Vdc

 5.56 A 3.15 A 4.63 A 540 mV ±1% 51.3-56.7 V ±0.3% ±0.5% 93%

NOTE:
1. Add a 0.1uF ceramic capacitor and a 10uF E.L. capacitor to output for ripple & noise measuring @20MHz BW.
2. Voltage accuracy is set at full load.
3. Line regulation is measured from 100Vac to 240Vac with full load.
4. Load regulation is measured from 10% to 100% full load.
5. Typical efficiency at 230 Vac and full load at 25℃.
6. Forced air convection with 14CFM above 115Vac.
7. With addition cooling conduction plate, 22.8 by 22.8 cm with min. 0.2 cm thick, as below. 

  

PART NUMBER

SERIES NUMBER OF OUTPUTS NOMINAL OUTPUT VOLTAGE TYPE MOUNTING INSERTS
LFM300 O XX X -YZ
LFM300

S：Single

120 : 12Vdc
150 : 15Vdc
240 : 24Vdc
280 : 28Vdc
300 : 30Vdc
480 : 48Vdc
540 ; 54Vdc

 B：With Baseplate
C：With Cover		 Blank：Through Hole
C0：Threaded Hole

Part Number Example:
LFM300S120C-C0: With Cover 300W, Single 12Vdc Output, Threaded Hole
LFM300S1200B: With Baseplate 300W, Single 12Vdc Output, Through Hole

 

Technical Illustrations
GA_DrawingLFM300S-series-2 GA_Drawing_LFM300S-series-1
Downloads
Datasheet-LFM300S-series.pdf
ABSOLUTE MAXIMUM RATINGS
Parameter Notes and Conditions
 Device
 Min.
 Typ.
 Max.
 Units
Input Voltage   All 85   264 Vac
Operating Temperature See derating curve All -40   80 ℃
Operating Case Temperature At the center of base plate
(T꜀ = Case temperature)		 All -40   90 ℃
Storage Temperature   All -40   90 ℃
Operating Altitude IEC/EN/UL 62368-1 OVC II
IEC/EN/UL 62368-1 OVC III		 All     5000
2000		 m
INPUT CHARACTERISTICS
Parameter Notes and Conditions
 Device Min.
 Typ.
 Max.
 Units
Operating Input Voltage   All 100   240 Vac
Input Frequency Range   All 47   63 Hz
Maximum Input Current 100% Load, Vᵢₙ=100Vac All     5.0 A
Leakage Current Contact leakage current
Earth leakage current		 All     100
300		 uA
Inrush Current Vᵢₙ=240Vac, Cold Start @25℃ All     105 A
Power Factor 230Vac @ Full load All   0.92    
OUTPUT CHARACTERISTICS
Parameter Notes and Conditions
 Device
 Min.
 Typ. Max.
 Units
Output Voltage Set Point

Vᵢₙ=Nominal Vᵢₙ, Iₒ= Iₒ_ₘₐₓ., T꜀=25℃

LFM300S120
LFM300S150
LFM300S240
LFM300S280
LFM300S300
LFM300S480
LFM300S540

 11.88
14.85
23.76
27.72
29.7
47.52
53.46		 12
15
24
28
30
48
54

12.12
15.15
24.24
28.28
30.3
48.48
54.54

 Vdc
Operating Output Current Range Vᵢₙ=85Vac-264Vac, see derating curve LFM300S120
LFM300S150
LFM300S240
LFM300S280
LFM300S300
LFM300S480
LFM300S540

0
0
0
0
0
0
0

   25.0
20.0
12.5
10.7
10.0
6.25
5.56		 A
Holdup Time Vᵢₙ=115Vac All   12   ms
Output Voltage Regulation
Load Regulation 10% Load to full load All     ±0.5 %
Line Regulation Vᵢₙ=High line to low line All     ±0.3 %
Output Voltage Adjustment Pₒ≦ₘₐₓ. rated power, Iₒ ≦ Iₒ_ₘₐₓ. All -5   +5 %
Over Voltage Protection Latch off (AC recycle to reset) LFM300S120
LFM300S150
LFM300S240
LFM300S280
LFM300S300
LFM300S480
LFM300S540		     16
20
32
35
36
59
63		 Vdc
Over Current Protection Auto recovery (output is rated load) All 110 120 150 %
Short Circuit Protection Auto recovery All        
Over Temperature Protection Auto recovery All        
Output Ripple and Noise 1. Add a 0.1uF ceramic capacitor and a 10uF aluminum electrolytic capacitor to output
2. Oscilloscope is 20MHz band width.
3. Ambient Temperature=25℃		 LFM300S120
LFM300S150
LFM300S240
LFM300S280
LFM300S300
LFM300S480
LFM300S540		     150
150
240
280
300
480
540		 mV
Load Capacitance 1. Vᵢₙ=115Vac and 230Vac
2. Output is max. load
3. Ambient temperature=25℃		 LFM300S120
LFM300S150
LFM300S240
LFM300S280
LFM300S300
LFM300S480
LFM300S540		     15400
12200
7800
6600
6200
3870
3400		 uF
Efficiency 1. Input Voltage is 230Vac
2. Output is rated load
3. Ambient temperature=25℃		 LFM300S120
LFM300S150
LFM300S240
LFM300S280
LFM300S300
LFM300S480
LFM300S540		   93
93
94
94
94
94
93		   %
ISOLATION CHARACTERISTICS
Parameter Notes and Conditions
 Device
 Min.
 Typ.
 Max.
 Units
Input to Output 1 Minute (without dielectric breakdown) All     4250 Vac
Input to Earth (Ground) 1 Minute (without dielectric breakdown) All     2000 Vac
Output to Earth (Ground) 1 Minute (without dielectric breakdown)

All

     2000 Vac
Isolation Resistance Input to output All 100     MΩ

 

FEATURE CHARACTERISTICS
Parameter Notes and Conditions
 Device
 Min.
 Typ.
 Max.
 Units
Switching Frequency Pₒᵤₜ=max. rated power

15V
Others

   100   kHz
GENERAL CHARACTERISTICS
Parameter Notes and Conditions
 Device
 Min.
 Typ.
 Max.
 Units
MTBF Iₒ=100%; Ta=25℃ per MIL-HDBK-217F
Iₒ=100%; Ta=25℃ per Telcordia SR332

All

 500
1690		     k hours
Life Time (Detail refer to Application Note) Conduction cooling @75% Load, 40℃
Fan cooling @75% Load, 40℃		 All   112
159		   k hours
Humidity Non-condensing All     93 % RH
Shock Meet MIL-STD-810F Table 516.5,Table 516.5-I 10ms, each axis 3 times(±X、±Y、±Z axis) All   75   g
Vibration Meet MIL-STD-810F Table 514.5C-VIII,15~2000Hz, X、Y、Z axis, 1 hour (each axis),. Total 3 hrs. All   4   g
Weight Baseplate versions
Covered versions		 All   200
280		   grams
Dimensions Baseplate versions
Covered versions		 All 4.04x2.00x1.00 Inches (102.6x50.8x25.4 mm)
4.09x2.28x1.00 Inches (104.0x57.9x25.4 mm)
Safety Class I, IEC/EN/UL 62368-1 Ed. 3.0
EMC Emission EN 55032, EN 61000-6-4, EN 61204-3, EN 61000-3-2, EN 61000-3-3, 47 CFR FCC Part 15  
Conducted Disturbance EN 55032, 47 CFR FCC Part 15 Class B
Radiated Disturbance EN 55032, 47 CFR FCC Part 15 Class B
Harmonic Current Emissions EN 61000-3-2 Class A, D
Voltage Fluctuations & Flicker EN 61000-3-3 Criterion A
EMC Immunity EN 55035, EN 61000-6-2, EN 61204-3
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3: Air Discharge: ±8kV, Level 2: Contact Discharge: ±4kV Criterion A
Radio-Frequency, Continuous Radiated Disturbance

 IEC 61000-4-3, Level 3: 80~1000MHz, 10V/m Criterion A
Electrical Fast Transient (EFT) IEC 61000-4-4, Level 3: ±2kV Criterion A
Surge IEC 61000-4-5, Level 4: L-N: ±2kV, L-E (Ground): ±4kV Criterion A
Conducted Disturbances, Induced by RF Fields IEC 61000-4-6, Level 3: 0.15~80MHz, 10V Criterion A
Power Frequency Magnetic Field IEC 61000-4-8, Level 4: 30A/m Criterion A
Voltage Dips IEC/EN 61000-4-11, Dip: 30% Reduction
IEC/EN 61000-4-11, Dip >95% Reduction		 Criterion A
Voltage Interruptions IEC/EN 61000-4-11, >95% Reduction Criterion B
Application Note Link                                                                                                              LFM300S Series App Notes
MODEL NUMBER OUTPUT VOLTAGE OUTPUT CURRENT RIPPLE & NOISE NOTE1 VOLTAGE ACCURACY NOTE2 VOLTAGE ADJ. RANGE LINE REGULATION NOTE3 LOAD REGULATION NOTE4 % EFF. (Typ.) NOTE5
With Fan NOTE6 With Conduction Cooling NOTE7
Baseplate Cover
LFM300S120

12 Vdc

 25 A 14.2 A 20.83 A 150 mV ±1% 11.4-12.6 V ±0.3% ±0.5% 93%

LFM300S150

15 Vdc

 20A 11.35 A 16.6 A 150 mV ±1% 14.25-15.75 V ±0.3% ±0.5% 93%
LFM300S240

24 Vdc

 12.5 A 7.1 A 10.4 A 240 mV ±1% 22.8-25.2 V ±0.3% ±0.5% 94%
LFM300S280

28 Vdc

 10.7 A 6.07 A 8.90 A 280 mV ±1% 26.6-29.4 V ±0.3% ±0.5% 94%
LFM300S300

30 Vdc

 10 A 5.67 A 8.33 A 300 mV ±1%

28.5-31.5 V

 ±0.3% ±0.5% 94%
LFM300S480

48 Vdc

 6.25 A 3.54 A 5.20 A 480 mV ±1% 45.6-50.4 V ±0.3% ±0.5% 94%
LFM300S540

54 Vdc

 5.56 A 3.15 A 4.63 A 540 mV ±1% 51.3-56.7 V ±0.3% ±0.5% 93%

NOTE:
1. Add a 0.1uF ceramic capacitor and a 10uF E.L. capacitor to output for ripple & noise measuring @20MHz BW.
2. Voltage accuracy is set at full load.
3. Line regulation is measured from 100Vac to 240Vac with full load.
4. Load regulation is measured from 10% to 100% full load.
5. Typical efficiency at 230 Vac and full load at 25℃.
6. Forced air convection with 14CFM above 115Vac.
7. With addition cooling conduction plate, 22.8 by 22.8 cm with min. 0.2 cm thick, as below. 

  

PART NUMBER

SERIES NUMBER OF OUTPUTS NOMINAL OUTPUT VOLTAGE TYPE MOUNTING INSERTS
LFM300 O XX X -YZ
LFM300

S：Single

120 : 12Vdc
150 : 15Vdc
240 : 24Vdc
280 : 28Vdc
300 : 30Vdc
480 : 48Vdc
540 ; 54Vdc

 B：With Baseplate
C：With Cover		 Blank：Through Hole
C0：Threaded Hole

Part Number Example:
LFM300S120C-C0: With Cover 300W, Single 12Vdc Output, Threaded Hole
LFM300S1200B: With Baseplate 300W, Single 12Vdc Output, Through Hole

 

GA_DrawingLFM300S-series-2 GA_Drawing_LFM300S-series-1
Datasheet-LFM300S-series.pdf

Find the Right Model

Model Number Input Voltage (Vac) Output Voltage (Vdc) Output Current (A)
product variant LFM300S120 85–264Vac 12Vdc 25A
product variant LFM300S150 85–264Vac 15Vdc 20A
product variant LFM300S240 85–264Vac 24Vdc 12.5A
product variant LFM300S280 85–264Vac 28Vdc 10.7A
product variant LFM300S300 85–264Vac 30Vdc 10A
product variant LFM300S480 85–264Vac 48Vdc 6.25A
product variant LFM300S540 85–264Vac 54Vdc 5.56A

Need help finding the right product model?

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