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TDK-Lambda 

LS 

25-150 

Series 

INSTRUCTION MANUAL

 

LS25~150 Series 

Instruction Manual

 

 
 

 
 
 
 
 

 
 
 
 
 

 
 
 
 
 

 
 

 

BEFORE USING THE POWER SUPPLY UNIT 

  Pay attention to all warnings and cautions before using the unit. Incorrect usage could lead to an electrical 

shock, damage to the unit or a fire hazard. 

   

WARNING and CAUTION 

z

 

Do not modify. 

z

 

Do not touch the internal components, they may have high voltage or high temperature. You may get       
electrical shock or burned. 

z

 

When the unit is operating, keep your hands and face away from it as you may be injured by flying debris in 
the event of a fault. 

z

 

This power supply is designed for use within an end product. Stick the WARNING label for users on the   
system equipment and notify in the system instruction manual. 

z

 

Never operate the unit under over current or short-circuit conditions for more than 30 seconds or outside its 
specified Input Voltage Range. Insulation failure, burning, smoke or other damages may occur. 

z

 

Confirm connections to input/output terminals are correct as indicated in the instruction manual. 

z

 

This power supply has a possibility for hazardous voltage to appear at output terminal depending on the type 
of failure. The outputs of these products must be earthed in the end equipment to maintain SELV. 

      If the outputs are not earthed, they must be considered hazardous and must not be made user accessible.       
       

  Note: CE MARKING

 

   

CE marking, when applied to the LS series products, indicates compliance with the Low Voltage Directive 

(2006/95/EC) in that it complies with EN60950-1. 

      DWG NO. : PA582-04-01-A 

APPD CHK  DWG 

 

 

 

Summary of Contents for LS100 Series

Page 1: ...tem equipment and notify in the system instruction manual z Never operate the unit under over current or short circuit conditions for more than 30 seconds or outside its specified Input Voltage Range...

Page 2: ...Output terminal 25A max terminal 5 V Output terminal 25A max terminal 6 Output voltage adjustable trimmer 7 Output monitoring indicator Green LED ON 2 Terminal connecting method z Input must be off w...

Page 3: ...urrent Please select suitable input switch and fuse rating in case of re input the power at high temperature 3 4 Over Voltage Protection OVP The OVP function will shutdown the output except for LS25 T...

Page 4: ...reverse voltage 3 8 Parallel Operation A Operation to increase the Output Current is not possible B Operation as a Backup Power Supply is possible as follows 1 Set the power supply output voltage high...

Page 5: ...5kVAC between input and FG chassis and 500VAC between output and FG chassis each for 1 minute When testing withstand voltage set current limit of with stand voltage test equipment at 20mA Output FG c...

Page 6: ...rating below Please do not use installation Method E where the PCB will be on the topside and heat will be trapped inside the unit In the following derating curve the maximum output current is denoted...

Page 7: ...ent Temperature 0 20 40 60 80 100 120 25 0 25 50 75 100 Ambient Temperature o C LS35 3 3 5 12 15 24 36 48 Output Derating Vs Ambient Temperature 0 20 40 60 80 100 120 25 0 25 50 75 100 Ambient Tempera...

Page 8: ...tput Derating Vs Ambient Temperature 0 20 40 60 80 100 120 25 0 25 50 75 100 Ambient Temperature C Load Mounting Mounting A B D C 70 70 60 45 Output Derating Vs Ambient Temperature 0 20 40 60 80 100 1...

Page 9: ...tput Derating Vs Ambient Temperature 0 20 40 60 80 100 120 25 0 25 50 75 100 Ambient Temperature C Load Mounting Mounting A B C D 50 70 45 40 Output Derating Vs Ambient Temperature 0 20 40 60 80 100 1...

Page 10: ...utput Derating Vs Ambient Temperature 0 20 40 60 80 100 120 25 0 25 50 75 100 Ambient Temperature C Load Mounting Mounting A B C D 50 70 30 40 Output Derating Vs Ambient Temperature 0 20 40 60 80 100...

Page 11: ...LS100 3 3 5 12 15 24 36 48 NOTE LS25 LS35 LS50 LS75 LS150 series do not require Input Voltage Derating Output Derating Vs Ambient Temperature 0 20 40 60 80 100 120 25 0 25 50 75 100 Ambient Temperatu...

Page 12: ...s must be as thick and short as possible to make lower impedance z Noise can be reduced by connecting a film capacitor with 0 1uF capacitance across the load terminals z For safety and EMI considerati...

Page 13: ...um capacitance shown below Maximum external capacitance MODEL 3 3V 5V 12V 15V 24V 36V 48V LS25 10 000uF 5 000uF 2 000uF 1 000uF 500uF LS35 LS50 10 000uF 5 000uF 2 000uF 500uF LS75 LS150 10 000uF 5 000...

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