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%. Housed in a low-profile 25.4mm package, this ...
Read MoreThe 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%.
Housed in a low-profile 25.4mm package, this Class I power supply is available in baseplate or covered versions with optional threaded inserts. It supports forced-air cooling or conduction cooling with an external baseplate, making it flexible for space-constrained or thermally demanding installations.
The LFM300S Series is certified to IEC/EN/UL 62368-1 and meets EN 55032 and CISPR/FCC Class B emissions standards. Built-in protections include over-voltage, over-current, over-temperature, and continuous short-circuit protection, ensuring safe and dependable operation across a wide range of applications.
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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)
- Operating altitude up to 5000m
- High efficiency up to 94%
- Isolation: 4250Vac (Input to Output)
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 |
11.88 14.85 23.76 27.72 29.7 47.52 53.46 |
12 15 24 28 30 48 54 |
12.12 |
Vdc |
| Operating Output Current Range | Vᵢₙ=85Vac-264Vac, see derating curve | LFM300S120 LFM300S150 LFM300S240 LFM300S280 LFM300S300 LFM300S480 LFM300S540 |
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 |
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: |
||||||||||
PART NUMBER
| SERIES | NUMBER OF OUTPUTS | NOMINAL OUTPUT VOLTAGE | TYPE | MOUNTING INSERTS |
|---|---|---|---|---|
| LFM300 | O | XX | X | -YZ |
| LFM300 |
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.
- 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.
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- Input Voltage Range: 85–264Vac (Operating range: 100–240Vac)
- Output Voltage Options: 12V, 15V, 24V, 28V, 30V, 36V, 48V, 54V
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- 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)
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