The New FLS400 Series is designed to work with Forced air cooling. This is a highly efficient power supply that can deliver up to 400 W with air. This new series comes with two options. ie. Casing with Side Fan and Top Fan.

  • 400 Watts Forced Cooled
  • Efficiency up to 90%
  • -40 to 70 °C operating temperature
  • High power density : 23.70W/inch3
  • Thermal Shut-Down feature / Dual fusing
  • 2.56m Hours, Telcordia -SR332-issue 3 MTBF
Input Specifications
Input Voltage                 85-264 VAC, Universal (De-rate linearly from 100% at 115 VAC to 70% at 85 VAC)
Input Frequency 47-63 Hz
Input Current 6.3 A max
Inrush Current 115 VAC – 25 A, 230 VAC – 45 A, 264 VAC – 75 A
Power Factor Exceeds 0.95 at Full Load
Output Specifications
Output Voltage From 12V to 58V (Refers model number matrix table)                                                            
Output Power 400W
Output Voltage Adjustment +/-3 %
Hold-up Time 8mS Typical (At 230VAC)
Line Regulation +/-0.5 %
Load Regulation +/-0.5 %
Minimum Load 0.0 A
Transient Response max excursion 5%; 50% step load change at 0.1A/uS slew rate, 50% duty cycle, 50Hz, recovery time < 5 ms
Rise Time 55 ms typical
Set Point Tolerance +/-1 %
Over Current Protection > 105 %, Hiccup mode / Auto Recovery
Over Voltage Protection 110 to 140 %, Hiccup mode / Auto Recovery
Short Circuit Protection Hiccup mode / Auto Recovery
General Specifications
Efficiency 90% (48V, 58V), 88% (12V, 15V, 24V, 30V)                                              
Isolation Voltage Input to Output – 4000V VAC
Input to GND - 2500 VAC
MTBF 2.56m Hours, Telcordia -SR332-issue 3
Leakage Current 300 uA Typical
Weight 700 gm approx
Environmental Specifications
Operating Temperature - 40 to +70°C, (-40 to 0°C startup is guaranteed with spec deviation)2                                           
Storage Temperature -40 to +85°C
Relative Humidity 5 % to 95 %, noncondensing
Altitude Operating: 16,000 ft.; Non-operating: 40,000 ft
Switching Frequency PFC – 70 to 130 KHz ,PWM – 50-80 KHz
Cooling Inbuilt Fans for cooling
Model Number Description Voltage Max. Load (Convection)
(375 LFM)
Min. Load Ripple1
FLS400-1312with JST Connector12 V25.00 A0.00 A5 %
FLS400-1315with JST Connector15 V20.00 A0.00 A5 %
FLS400-1324with JST Connector24 V16.70 A0.00 A2 %
FLS400-1330with JST Connector30 V13.30 A0.00 A2 %
FLS400-1348with JST Connector48 V8.30 A0.00 A2 %
FLS400-1358with JST Connector58 V6.90 A0.00 A2 %
For Top FAN vesrion add “TF” Ex. FLS400-1324-TF
For Side FAN version add “SF” Ex. FLS400-1324-SF
General Notes:
  • Specifications are for nominal input voltage, 25°C unless otherwise stated
  1. Ripple is peak to peak with 20 MHz bandwidth and 10 μF (Tantalum capacitor) in parallel with a 0.1 μF capacitor at rated line voltage and load ranges.
  2. Output ripple can be more than 2 % of the output voltage.
  3. 400W with Forced cooling at 115 VAC to 264VAC.
  4. Combine Output Power of Main Output, Fan supply should not exceed 400W
Derating Curve
FLS400 o/p derating and i/p derating De-rate linearly from 100% at 115VAC to 70% at 85VAC
FLS250 derating curve 12 to 15v Forced air cooled load: 300W up to 40 °C.
De-rate by 1.66% / °C above 40°C
fls250 derating curve of 24 to 58v Forced air cooled load: 400W up to 40 °C.
De-rate by 1.66% / °C above 40°C till 70°C
Parameter Conditions/Description Criteria
Conducted Emissions EN 55032-B, CISPR22-B, FCC PART15-B Pass
Radiated Emissions EN 55032 A Pass
Level B with external core (King core K5B RC 25x12x15-M or Equivalent in input cable)
Input Current Harmonics EN 61000-3-2 Class A
Voltage Fluctuation and Flicker EN 61000-3-3
ESD Immunity EN 61000-4-2 Level 3, Criterion A
Radiated Field Immunity EN 61000-4-3 Level 3, Criterion A
Electrical Fast Transient Immunity EN 61000-4-4 Level 3, Criterion A
Surge Immunity EN 61000-4-5 Level 3, Criterion A
Conducted Immunity EN 61000-4-6 Level 3, Criterion A
Magnetic Field Immunity EN 61000-4-8 Level 3, Criterion A
Voltage dips, interruptions EN 61000-4-11 Criterion A & B
CE Mark Complies with LVD Directive
Safety Standard(s) IEC62368-1:2018,
UL 62368-1 ED 3.0 and CAN/CSA C22.2 No. 62368-1:19
Approval Agency Nemko, UL, C-UL
Safety File Number(s) Class-I : UL : Certificate No: Pending, Nemko: Certificate No.: P21225619, CB Ref. Certificate No.: NO118753
CB Class - I Certificate
Nemko Class - I Certificate
UL Class - I Certificate
Mechanical Specifications
AC Input Connector (J1) TE Connectivity: 647676-3
Mating: 1-1123722-3 ; Crimp: 1123721-2
Pin 1
Pin 2
Pin 3
DC Output Connector (J2) TE Connectivity: 647676-6
Mating: 1-1123722-6 ; Crimp: 1123721-2
Pin 1,2,3
PIN 4,5,6
V1 +VE
V1 -VE
EARTH (J4) Ø4.25 Self clinching nut,
(PEM S-M3-0-ZI) or Equivalent
Cover kit with Top FAN
FLS400 Cover kit with Top FAN
Cover kit with Side FAN
Cover kit with Side FAN
    General Notes: In case the PCB is mounted in a metal enclosure, using metal hardware ensure the following
  1. Stand off, used to mount PCB has OD of 5.4 mm max.
  2. Screws, used to fix PCB on stand off, have head dia of 6.0 mm max.
  3. Washer, if used, to have dia of 6.5 mm max.
Certificate Standard Downloads
CB Class - I Certificate IEC 62368-1:2018
Nemko Class - I Certificate EN 62368-1:2020;A11
UL Class - I Certificate UL 62368-1 and CAN/CSA C22.2 No. 62368-1

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