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PYD20 Manual

 

DC-DC Converter Isolated, 20W, 2x1”, PCB Mount 

 

18. R

EMOTE 

ON/OFF

 

F

UNCTION

 

The device is equipped with a remote ON/OFF function to turn the output ON or OFF. 
Two logics are possible. With the positive logic (standard version), the output switches OFF as soon as pin 2 

(-Vin) and pin 6 (RC) are linked or a voltage of less than 1.2V is present. 
The optionally available negative logic (option –N) is exactly the vice versa. Here the output switches ON as 

soon as pin 2 (-Vin) and pin 6 (RC) are linked or a voltage of less than 1.2V is present. 
The RC-input is a sink input, which requires a maximal current of 1mA (typically 0.4mA) to be activated. The 
maximal allowed voltage (open circuit voltage) for this pin is 160Vdc. 
 

Positive logic (standard)

  

Converter ON: open or 4-160V 

Converter FF: closed or 0-1.2V 

6 RC

2 -Vin

1 +Vin

DC-DC

Converter

6 RC

2 -Vin

1 +Vin

DC-DC

Converter

6 RC

2 -Vin

1 +Vin

DC-DC

Converter

Remote On/Off Connection Examples

Negative logic (option -N)

  

Converter ON: closed or 0-1.2V  
Converter FF: open or 4-160V 
 

All parameters are typical values specified at nominal input voltage, nominal output load, 25°C ambient and after a 5 minutes run-in time unless  
otherwise noted. The information presented in this document is believed to be accurate and reliable and may change without notice. 

For additional information, please visit 

https://product.tdk.com/en/power/py

.

 

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DOC-ID: 260921 – Issue 1

Summary of Contents for PYD20 Series

Page 1: ...11 13 Protection Features 11 14 Approvals and Regulatory Compliances 12 15 Rail Applications 12 16 Thermal Consideration and Derating 13 17 EMC Considerations 13 18 Remote ON OFF Function 15 19 Outpu...

Page 2: ...mm Industry Standard Footprint 3000Vac Input to Output Isolation 8 5 160V 18 1 Wide range Input Single or Dual Output Voltages Available EN 50155 Railway Compliant IEC 62368 1 ICT Approved High Shock...

Page 3: ...should occur during installation or operation immediately turn power off and send unit to the factory for inspection Install the device in an enclosure providing protection against electrical mechanic...

Page 4: ...5 of the total load For single output voltage models the output voltage can be adjusted with an external resistor connected between the TRIM pin and the output voltage The device is equipped with an...

Page 5: ...diode should be at least equal to the maximum possible input voltage Capacitor C1 and Diode D2 These two components provide higher transient resistance surge and burst at the input and are required if...

Page 6: ...olated 20W Input 8 5 160V Output 15V 1 33A 2x1 inch pcb mount PYD20 72WD12 DC DC converter isolated 20W Input 8 5 160V Output 12V 0 83A 2x1 inch pcb mount PYD20 72WD15 DC DC converter isolated 20W Inp...

Page 7: ...Altitude Max 5000m 16 400ft Atmospheric pressure 110 54kPa Vibration 20Hz 1kHz 0 04g2 Hz 1 2kHz 6dB octave 60 minutes per axis According to MIL STD 810F random vibration units are operational Shock 50...

Page 8: ...ses vs output load PYD20 72WD12 Efficiency and power losses vs output load All parameters are typical values specified at nominal input voltage nominal output load 25 C ambient and after a 5 minutes r...

Page 9: ...l parameters are typical values specified at nominal input voltage nominal output load 25 C ambient and after a 5 minutes run in time unless otherwise noted The information presented in this document...

Page 10: ...Through hole 0 051 1 30 Top view pad 0 064 1 63 Bottom view pad 0 102 2 60 Pin assignment Pin Single output Dual outputs 1 V Input V Input 2 V Input V Input 3 V Output V Output 4 TRIM V Output 5 V Ou...

Page 11: ...Input surge voltage Max 200Vdc For maximal 100ms Output over voltage protection OVP 6 2Vdc 15Vdc 18Vdc 15Vdc 18Vdc 30Vdc Zener diode type For 5V output For 12V output For 15V output For 12V output Fo...

Page 12: ...e for railroad applications For details see application note for railway application EN 50155 Railway applications Rolling stock Electronic equipment EN 45545 2 Fire protection on railway vehicles Par...

Page 13: ...dels 2 3 1 The derating is not hardware controlled The user has to take this into consideration to stay below the de rated current limits in order not to overload the unit 17 EMC CONSIDERATIONS In ter...

Page 14: ...pacitor 120 F 220V NCC KXJ Aluminum capacitor 470pF 400Vac Y1 capacitor TDK CD series 1 5nF 400Vac Y1 capacitor TDK CD series 2 2nF 400Vac Y1 capacitor TDK CD series 1 4mH 0 4mmx1 13T ACME A151 T10x5x...

Page 15: ...rent of 1mA typically 0 4mA to be activated The maximal allowed voltage open circuit voltage for this pin is 160Vdc Positive logic standard Converter ON open or 4 160V Converter FF closed or 0 1 2V 6...

Page 16: ...2 36 12 72 13 08 13 44 13 8 20 16 12 8 4 3 6 9 12 15 R up 93820 37910 19270 9950 4360 R down 1550 8700 20630 44490 116060 Resistor values for adjusting the 15V output model Output V 12 0 12 6 13 2 13...

Page 17: ...ed age TRIM 4 Vout 5 Vout 3 Load PYD 6 RC 2 Vin 1 Vin D1 C1 R1 D2 Vin Vin D2 To prevent the stored energy from flowing in the wrong direction and not being available for the DC DC converter Use only...

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