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PAH300

350S24

-SERIES 

TDK-Lambda 

C175-04-11B 

 

PAH300

350S24 SERIES

 

 

 

Instruction Manual

 

 

Before using this product 

Be sure to take note of precautions and warnings indicated in this manual when using this product. Improper usage may 

lead to electric shock or fire. Be sure to read this instruction manual thoroughly before using this product. 

 

Precautions

 

 

Avoid touching the baseplate and the case of this product because they get hot. 

 

There are high voltage and high temperature components within this product. Refrain from disassembling this product 
or touching its internal components as this may lead to electric shock or burn. 

 

To avoid unexpected accident from placing hands or face near the unit during operation.   

 

Verify that connection to input, output and signal terminals are correct as indicated in this instruction manual.   

 

For acquisition of various Safety Standards and safety improvement, be sure to use an external fuse.   

 

This product is designed for installation on electronic equipment. 

 

For input terminals of 24 V input models, apply a voltage from a primary source with reinforced or double insulation.   

 

Output voltage of this product is considered to have hazardous energy level (voltage of 2V and above with power of 
240W and above) and must not have physical contact with operator. Protection must be provided on this module when 
installed on equipment to prevent physical contact with service technician himself or accidentally dropped tools during 
repair. Before repair, be sure to turn off the input source and confirm that input and output voltage have drop down to a 
safe level.   

 

Application circuit or component values described in this instruction manual are for reference only. When designing 
circuit, be sure to verify actual circuit operation before determining final application circuit or component values.   

 

Contents of this instruction manual are subject to change without notice. When using this product, please refer to latest 
data sheet to satisfy this product specification. 

 

No part of this document may be copied or reproduced in any for, or by any mean without prior written consent of 
TDK-Lambda. 

 

 

 
 
 
 
 
 
 
 

 

 
 
 

Summary of Contents for 350S24 Series

Page 1: ...ionon electronic equipment For input terminalsof24 V inputmodels apply avoltagefromaprimary sourcewith reinforced ordouble insulation Output voltage of this product is considered to have hazardous ene...

Page 2: ...TP 9 Remote Sensing S S terminal 10 ON OFF Control CNT terminal 11 Parallel Operation 12 Series Operation 13 Operating Ambient Temperature 14 Operating Ambient Humidity 15 Storage Ambient Temperature...

Page 3: ...lter Baseplate CASE Switching Frequency fixed 330kHz typ Sequence Time Chart For Standard Model with Negative logic for ON OFF control Input Voltage Output Voltage 1 ON OFF Control L H 0V Vin 0V Vout...

Page 4: ...rminal CASE Baseplate Terminal S Remote Sensing Terminal CNT ON OFF Control Terminal TRM Output Voltage Trimming Terminal Vin Input Terminal S Remote Sensing Terminal V Output Terminal Baseplate can b...

Page 5: ...connect electrolytic capacitor or ceramic capacitor between Vin and Vin terminals Furthermore use electrolytic capacitor with small ESR value Especially take note that during line turn off at low amb...

Page 6: ...y that ripple current does not exceed allowable ripple current before use C5 0 1 F To reduce spike noise voltage at the output connect a ceramic capacitor between V and V within 50mm distance from the...

Page 7: ...ut and output wiring method as well as peripheral circuits When selecting input filter be sure to verify actual EMI characteristics CE and RE before finalizing the filter Refer to PAH300 350S24 Evalua...

Page 8: ...output voltage higher 2 1 Allowable maximum output current maximum output power output voltage reduce maximum output current in specification 2 2 Connect an external resistor Radj up between TRM term...

Page 9: ...note that power module might be damaged continuing output short circuit or over load conditions depending on thermal conditions 7 OverVoltageProtection OVP This power module has built in OVP function...

Page 10: ...l should be shorted to Vin terminal 2 When ON OFF control function is not used for the P option and PT option CNT terminal should be opened 3 When using long wiring for prevention of noise attach a 0...

Page 11: ...gh care when storing the power module because rust which causes poor solderability would form in each terminal when stored in high temperature high humidity environment 17 Cooling Method Operating tem...

Page 12: ...g a resistor etc DC Isolation Tester Vin CASE CNT Vin V S TRM S V Over 100M at 500VDC Fig 20 1 Isolation Test 21 Vibration Vibration of power module is defined in case of mounting on printed circuit b...

Page 13: ...m Land diameter 3 0 mm Output terminals 2 0 mm Hole diameter 2 5 mm Land diameter 4 5 mm Mounting Holes FG Hole diameter 3 5 mm Land diameter 5 5 mm For position of the holes see outline drawing of th...

Page 14: ...l 3 5 Non threaded hole 2 2 Standard model and Poption model M3 Threaded hole 3 Regarding Vibration The vibration specification of the module is determined assuming that only the power module is mount...

Page 15: ...ts For cases where output voltage adjustment is used is the resistor or volume setting connections correctly done 3 Output voltage is low Is specified input voltage applied Are the remote sensing term...

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