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LFA-20

Basic Characteristics Data

*

1

    The value of input current is at ACIN 100V and rated load.

*

2

   Refer to Instruction Manual 2.

Basic Characteristics Data

Model

Circuit method

Switching

frequency

[kHz]

Input

current

 

*

[A]

Inrush

current

protection

PCB/Pattern

Series/Parallel

  operation availability  

*

2

Material

Single

sided

Double

sided

Series

operation

Parallel

operation

LFA10F

Flyback converter

100

0.26

LF

CEM-3

Yes

Yes

No

LFA15F

Flyback converter

100

0.35

Thermistor

CEM-3

Yes

Yes

No

LFA30F

Flyback converter

130

0.65

Thermistor

CEM-3

Yes

Yes

No

LFA50F

Active fi lter

60-440

0.67

Thermistor

CEM-3

Yes

Yes

No

Flyback converter

130

LFA75F

Active fi lter

60-440

1.0 Thermistor

CEM-3

Yes

Yes

No

Flyback converter

130

LFA100F

Active fi lter

60

1.3 Thermistor

CEM-3

Yes

Yes

No

Forward converter

140

LFA150F

Active fi lter

60

2.0 Thermistor

CEM-3

Yes

Yes

No

Forward converter

140

LFA240F

Active fi lter

60

3.3 SCR

CEM-3

Yes

Yes

No

Forward converter

140

LFA300F

Active fi lter

60

4.1 SCR

CEM-3

Yes

Yes

No

Forward converter

140

LFA

me̲lfa.indd   LFA-20

me lfa indd LFA-20

2015/06/19   10:40:13

2015/06/19 10:40:13

Summary of Contents for LFA100F

Page 1: ... 3 Yes Yes No LFA15F Flyback converter 100 0 35 Thermistor CEM 3 Yes Yes No LFA30F Flyback converter 130 0 65 Thermistor CEM 3 Yes Yes No LFA50F Active filter 60 440 0 67 Thermistor CEM 3 Yes Yes No Flyback converter 130 LFA75F Active filter 60 440 1 0 Thermistor CEM 3 Yes Yes No Flyback converter 130 LFA100F Active filter 60 1 3 Thermistor CEM 3 Yes Yes No Forward converter 140 LFA150F Active fil...

Page 2: ...range 1 2 Inrush current limiting 1 3 Overcurrent protection 1 4 Overvoltage protection 1 5 Output voltage adjustment range 1 6 Output ripple and ripple noise 1 7 Isolation 1 8 Reducing standby power LFA 22 LFA 22 LFA 22 LFA 22 LFA 22 LFA 23 LFA 23 LFA 23 5 1 Outline of options 5 2 Others LFA 30 LFA 32 5 Option and Others LFA 30 2 1 Series Operation 2 2 Parallel Operation LFA 23 LFA 24 AC DC Power...

Page 3: ...istor technique is used in the inrush current limiting circuit When you turn power ON OFF repeatedly within a short period of time please have enough intervals so that the inrush current limit ing circuit becomes operative When the switch of the input is turned on the primary inrush cur rent and secondary inrush current will be generated because the thyristor technique is used for the inrush curre...

Page 4: ...creased The specification of the Ripple Ripple Noise changes by this intermittent operation The value of the ripple ripple Noise when intermittent operates changes in the input voltage and the output current Please contact us for details Remarks When GND cable of probe with flux of magnetic force from power supply are crossing ripple and ripple noise might not measure correctly Please note the mea...

Page 5: ...on 20 Io 100 73 84 Io 20 76 79 F Convection 20 Io 100 74 80 Io 20 76 78 A B C D E F Forced air 70 Io 100 75 75 Io 70 75 75 2 2 Parallel Operation Parallel operation is not possible Redundancy operation is available by wiring as shown below Even a slight difference in output voltage can affect the balance between the values of I1 and I2 Please make sure that the value of I3 does not exceed the rate...

Page 6: ...100 75 75 Io 70 75 75 Table 3 5 Temperatures of Point A Point B LFA75F O Mounting Method Cooling Method Load factor Max temperature Point A C Point B C A Convection 70 Io 100 85 70 Io 70 86 76 B Convection 70 Io 100 77 65 Io 70 81 71 C Convection 70 Io 100 81 68 Io 70 83 72 D Convection 70 Io 100 78 58 10 Io 70 80 63 Io 10 84 72 E Convection 70 Io 100 73 66 10 Io 70 83 68 Io 10 83 79 F Convection ...

Page 7: ...0 74 88 F Convection 80 Io 100 61 68 60 Io 80 68 71 Io 60 76 80 A B C D E and F 3 3V 5V 12V 15V Forced air 50 Io 100 75 75 85 85 Io 50 75 75 85 85 A B C D E and F 24V 30V 36V 48V Forced air 50 Io 100 75 75 85 85 Io 50 75 75 85 85 AC DC Power Supplies Open Frame Enclosed Type Instruction Manual LFA 26 LFA Inside is with case cover Inside is with case cover Fig 3 3 Ambient temperature derating curve...

Page 8: ...ounting 2 A F mounting 10 70 60 50 40 0 3 2Forced air 0 5m3 min 1Convection 80 100 60 40 2 25 0 0 20 1 15 0 0 Load factor C Ambient temperature 1 C mounting 1 A mounting 1 B mounting 1 D F mounting 1 E mounting 2 A F mounting Fig 3 11 Ambient temperature derating curve 10 60 50 40 0 3 2Forced air 0 5m3 min 1Convection 80 75 100 60 40 20 10 0 20 10 0 Load factor C Ambient temperature 1 C mounting 1...

Page 9: ...ing is necessary For more details please contact our sales or engineering departments 3 3 Mounting screw The mounting screw should be M3 The hatched area shows the allowance of metal parts for mounting If metallic fittings are used on the component side of the board ensure there is no contact with surface mounted components This product uses SMD technology Please avoid the PCB installation method ...

Page 10: ...s 6years Ta 35C 6years 6years C Convection Ta 25C or less 6years 6years Ta 35C 6years 5years D F Convection Ta 25C or less 6years 6years E Convection Ta 25C or less 6years 5years A B C D E F Forced air Ta 60C 5years 5years Table 3 17 Expectancy Life LFA240F O Mounting Method Cooling Method Average ambient temperature year Expectancy Life Io 75 75 Io 100 A Convection Ta 30C or less 6years 6years Ta...

Page 11: ... Average ambient temperature year Warranty Io 75 75 Io 100 A Convection Ta 40C or less 5years 5years Ta 50C 5years 3years B C Convection Ta 35C or less 5years 5years Ta 45C 5years 3years D E F Convection Ta 25C or less 5years 5years Ta 35C 5years 3years A B C D E F Forced air Ta 60C 5years 3years Table 3 25 Warranty LFA150F O Mounting Method Cooling Method Average ambient temperature year Warranty...

Page 12: ...out the detail of LFA300F SNF LFA300F 5 12 24 TY In option SNF the cover chassis and cooling fan are added The appearance of option J units is defferent from the of stan dard appearance Please contact us about the detail Oil and other chemical liquid splashing environment may cause the performance degradation and failure Y Option Y units can adjust the output voltage by the potentiom eter is attac...

Page 13: ...trol Standby power LFA100F LFA150F LFA240F 0 2Wtyp AC100V 0 7Wtyp AC200V LFA300F 0 25Wtyp AC100V 1 1Wtyp AC200V T LFA240F LFA300F Option T units have vertically positioned screws on a terminal block Please contact us for details about appearance The screw can be held to terminal block by inserting and lifting the screwdriver from the side of terminal block T1 LFA300F Option T units have horizontal...

Page 14: ...e oper ation Please contact us for details when you connect the capaci tor LFA10F LFA15F When these power supplies are connected to the input terminal in parallel the total capacitance between line and line becomes big Therefore the electrical discharge resistance on the safety stan dard might become necessary Please contact us for details when safety standard is necessary at multiple units usage ...

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