Cincon LFM550S Series AC/DC Power Supply
The Cincon LFM550S Series is a high-performance 550W AC-DC power supply with active PFC, designed for demanding industrial and commercial applications requiring high efficiency, reliability, and compliance. Featuring a universal 85–264Vac input range, up to 94% efficiency, and a compact 25.4mm low-profile package, the LFM550S delivers outstandin...
Read MoreThe Cincon LFM550S Series is a high-performance 550W AC-DC power supply with active PFC, designed for demanding industrial and commercial applications requiring high efficiency, reliability, and compliance.
Featuring a universal 85–264Vac input range, up to 94% efficiency, and a compact 25.4mm low-profile package, the LFM550S delivers outstanding power density in space-constrained systems. With comprehensive protection functions including OVP, OCP, OTP, and continuous short circuit protection, this series ensures safe and stable operation in mission-critical environments.
Certified to IEC/EN/UL 62368-1 Ed. 3.0 and compliant with EN 55032 / CISPR / FCC Class B, the LFM550S is suitable for industrial equipment, automation systems, telecom infrastructure, and embedded power applications.
Available in multiple output voltage options from 12V to 54V, with baseplate or enclosed cover variants, the LFM550S provides flexible cooling options including forced air and conduction cooling configurations.
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Features
- Input Voltage Range: 85–264Vac (Operating range: 100–240Vac)
- Output Voltage Options: 12V, 15V, 24V, 28V, 30V, 36V, 48V, 54V
- Maximum Output Current: Up to 45.83A (model dependent)
- Over Temperature Protection (Auto Recovery)
- Operating Temperature: -40°C to +80°C
- Load Regulation: ±0.5%
- Operating Altitude: up to 5000m (OVC II)
- Compliance & Standards: IEC/EN/UL 62368-1 Ed.3.0
- MTBF: 400,000 hours (MIL-HDBK-217F)
Specifications
| ABSOLUTE MAXIMUM RATINGS | ||||||
|---|---|---|---|---|---|---|
| Parameter | Notes and Conditions |
Device |
Min. |
Typ. |
Max. |
Units |
| Input Voltage | Safety approvals only to the AC input | All | 85 115 |
264 370 |
Vac Vdc |
|
| 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 | 6.3 | A | ||
| Leakage Current | Contact leakage current Earth leakage current |
All | 100 300 |
uA | ||
| Inrush Current | Vᵢₙ=240Vac, Cold Start @25℃ | All | 45 | A | ||
| Power Factor | 230Vac @ Full load | All | 0.96 | 0.98 | ||
| OUTPUT CHARACTERISTICS | ||||||
|---|---|---|---|---|---|---|
| Parameter | Notes and Conditions |
Device |
Min. |
Typ. | Max. |
Units |
| Output Voltage Set Point |
Vᵢₙ=Nominal Vᵢₙ, Iₒ= Iₒ_ₘₐₓ., T꜀=25℃ |
LFM550S120 |
11.88 14.85 23.76 27.72 29.70 35.64 47.52 53.46 |
12 15 24 28 30 36 48 54 |
12.12 |
Vdc |
| Operating Output Current Range | Vᵢₙ=85Vac-264Vac, see derating curve | LFM550S120 LFM550S150 LFM550S240 LFM550S280 LFM550S300 LFM550S360 LFM550S480 LFM550S540 |
0 |
45.83 36.66 22.91 19.64 18.33 15.27 11.45 10.18 |
A | |
| Holdup Time | Vᵢₙ=115Vac | All | 8 | 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. | LFM550S280 Others |
0 -5 |
+5 +5 |
% | |
| Over Voltage Protection | Latch off (AC recycle to reset) | LFM550S120 LFM550S150 LFM550S240 LFM550S280 LFM550S300 LFM550S360 LFM550S480 LFM550S540 |
16 20 30 35 35 45 55 60 |
Vdc | ||
| Over Current Protection | Auto recovery (output is rated load) | All | 120 | 140 | 160 | % |
| 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℃ |
LFM550S120 LFM550S150 LFM550S240 LFM550S280 LFM550S300 LFM550S360 LFM550S480 LFM550S540 |
120 150 200 200 200 200 200 200 |
mV | ||
| Load Capacitance | 1. Vᵢₙ=115Vac and 230Vac 2. Output is max. load 3. Ambient temperature=25℃ |
LFM550S120 LFM550S150 LFM550S240 LFM550S280 LFM550S300 LFM550S360 LFM550S480 LFM550S540 |
27200 22400 14100 12500 11600 9020 7200 6000 |
uF | ||
| Efficiency | 1. Input Voltage is 230Vac 2. Output is rated load 3. Ambient temperature=25℃ |
LFM550S120 LFM550S150 LFM550S240 LFM550S280 LFM550S300 LFM550S360 LFM550S480 LFM550S540 |
92 93 93 93 93 94 94 94 |
% | ||
| 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 |
All |
65 | 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 |
400 1300 |
k hours | ||
| Life Time (Detail refer to Application Note) | Conduction cooling @75% Load, 40℃ | All | 97 150 |
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 |
LFM550SXXXB LFM550SXXXC |
380 535 |
grams | ||
| Dimensions |
Baseplate versions |
LFM550SXXXB LFM550SXXXC |
5.09x3.29x1.00 Inches (129.4x83.5x25.4mm) 5.09x3.29x1.00 Inches (129.4x83.5x25.4 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, C, D | ||||
| Voltage Fluctuations & Flicker | EN 61000-3-3 | Criterion A | ||||
| EMC Immunity | EN 55035, EN 61000-6-1, EN 61000-6-2, EN 61204-3 | |||||
| Electrostatic Discharge (ESD) | IEC 61000-4-2, Level 3: Air Discharge: ±8kV, Contact Discharge: ±4kV | Criterion A | ||||
| Radio-Frequency, Continuous Radiated Disturbance |
IEC 61000-4-3, Level 3: 80~2700MHz, 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 | LFM550S 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 | |||||||||
| LFM550S120 |
12 Vdc |
45.83 A | 29.17 A | 37.5 A | 120 mV | ±1% | 11.4-12.6 V | ±0.3% | ±0.5% | 93% |
|
LFM550S150 |
15 Vdc |
36.66 A | 23.33 A | 30 A | 150 mV | ±1% | 14.25-15.75 V | ±0.3% | ±0.5% | 93% |
| LFM550S240 |
24 Vdc |
22.91 A | 14.58 A | 18.75 A | 200 mV | ±1% | 22.8-25.2 V | ±0.3% | ±0.5% | 93% |
| LFM550S280 |
28 Vdc |
19.64 A | 12.5 A | 16.07 A | 200 mV | ±1% | 28-29.4 V | ±0.3% | ±0.5% | 93% |
| LFM550S300 |
30 Vdc |
18.33 A | 11.66 A | 15 A | 200 mV | ±1% |
28.5-31.5 V |
±0.3% | ±0.5% | 93% |
| LFM420S360 |
36 Vdc |
15.27 A | 9.72 A | 12.5 A | 200 mV | ±1% |
34.2-37.8 V |
±0.3% | ±0.5% | 94% |
| LFM550S480 |
48 Vdc |
11.45 A | 7.29 A | 9.37 A | 200 mV | ±1% | 45.6-50.4 V | ±0.3% | ±0.5% | 94% |
| LFM550S540 |
54 Vdc |
10.18 A | 6.48 A | 8.34 A | 200 mV | ±1% | 51.3-56.7 V | ±0.3% | ±0.5% | 94% |
|
NOTE: |
||||||||||
PART NUMBER
| SERIES | NUMBER OF OUTPUTS | NOMINAL OUTPUT VOLTAGE | TYPE | MOUNTING INSERTS |
|---|---|---|---|---|
| LFM550 | O | XXX | X | -YZ |
| LFM550 |
S：Single |
120 : 12Vdc |
B：With Baseplate C：With Cover |
Blank：Through Hole C0：Threaded Hole |
|
Part Number Example: |
||||
Technical Drawings
Warranty & Returns
Warranty periods vary by product. Please refer to the Powerbox Warranty Policy for the applicable coverage period against manufacturing defects from date of purchase. For returns and RMA requests, please visit our RMA support page or contact our support team directly.
Related Products
- Universal Input: 85–264Vac (Operating: 100–240Vac), 47–63Hz
- Eight Output Voltage Models: 12V, 15V, 24V, 28V, 30V, 36V, 48V, 54V
- High Output Current Capability: Delivers up to 16.67A depending on the output voltage model, supporting demanding medical and industrial loads.
- Input Voltage Range: 85–264Vac (Operating range: 100–240Vac)
- Output Voltage Options: 12V, 15V, 24V, 28V, 30V, 36V, 48V, 54V
- Maximum Output Current: Up to 16.67A (model dependent)
- Wide Universal AC Input Range: 85–264Vac input supporting global AC mains operation across medical and industrial environments.
- Multiple Output Voltage Options: Available in 12V, 15V, 24V, 28V, 30V, 48V and 54V single output models to support a wide range of system requirements.
- High Output Current Capability: Delivers up to 25A depending on the selected output voltage model, enabling reliable power delivery for demanding applications.
- 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)
- Wide Universal AC Input Range: 85–264Vac input allowing reliable operation across global AC power systems.
- Multiple Output Voltage Options: Available in 12V, 15V, 24V, 28V, 30V, 36V, 48V and 54V output models for flexible system integration.
- High Output Current Capability: Provides up to 35A output current depending on model, supporting higher power medical and industrial equipment.
- Input Voltage Range: 85–264Vac (Operating range: 100–240Vac)
- Output Voltage Options: 12V, 15V, 24V, 28V, 30V, 36V, 48V, 54V
- Maximum Output Current: Up to 35A (model dependent)
- Wide Universal AC Input Range: 85–264Vac input enabling global operation across a wide range of AC power systems.
- Multiple Output Voltage Options: Available in 12V, 15V, 24V, 28V, 30V, 36V, 48V and 54V single output models for flexible system design.
- High Output Current Capability: Provides up to 45.83A output current depending on model, supporting high-power medical equipment.