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FEATURES 

 

High Efficiency: 88% @ 3.3V/15A   

 

Size: 49.6mm x 39.4mm x 8.9mm     

 (1.95”x1.55”x0.35”) 

 

Industry standard pin out 

 

Fixed frequency operation 

 

Input UVLO, OTP, Output OCP, OVP, (auto 

recovery) 

 

Monotonic startup into normal and   

pre-biased loads 

 

2250V isolation and basic insulation 

 

No minimum load required 

 

4:1 Input voltage range 

 

ISO 9001, TL 9000, ISO 14001, QS 9000,   

OHSAS 18001 certified manufacturing   

facility 

 

UL/cUL 60950 (US & Canada) Recognized, 

and TUV (EN60950) Certified 

 

CE mark meets 73/23/EEC and 93/68/EEC 

directives. 

 
 

 
             

Delphi Series L36SA, 2” x 1.6”, 50W Family   
DC/DC Power Module: 18~75V in, 3.3V/15A out

 

The Delphi Series L36SA, 2” x 1.6”, 18~75V input, single output, 
isolated DC/DC converter is the latest offering from a world leader in 
power systems technology and manufacturing - Delta Electronics, 
Inc. This L36SA series provides up to 50 watts of power or 15A of 
output current (3.3V) in an industry standard 2” x 1.6” form factor 
and pinout. The Delphi L36SA series operates from a wide 18~75V 
(4:1) input voltages. With creative design technology and 
optimization of component placement, these converters possess 
outstanding electrical and thermal performances, as well as 
extremely high reliability under highly stressful operating conditions.

 

All models are fully protected from abnormal input/output voltage, 
current, and temperature conditions. The Delphi Series converters 
meet all safety requirements with basic insulation. An optional heat 
spreader is available for extended operation. 

 

OPTIONS 

 

 

Positive On/Off logic 

 

Sense 

 

Heat spreader

 

APPLICATIONS 

 

Telecom/Datacom 

 

Wireless Networks 

 

Optical Network Equipment 

 

Server and Data Storage

 

 

Industrial/Testing Equipment

 

 

DATASHEET 

DS_L36SA3R315_02142007  

Summary of Contents for Delphi L36SA

Page 1: ...chnology and manufacturing Delta Electronics Inc This L36SA series provides up to 50 watts of power or 15A of output current 3 3V in an industry standard 2 x 1 6 form factor and pinout The Delphi L36SA series operates from a wide 18 75V 4 1 input voltages With creative design technology and optimization of component placement these converters possess outstanding electrical and thermal performances...

Page 2: ...ut Current Range 0 15 A Output over current protection 110 150 DYNAMIC CHARACTERISTICS Output Voltage Current Transient 48V 10µF Tan 1µF Ceramic load cap 0 1A µs Positive Step Change in Output Current 50 Io max to 75 Io max 80 mV Negative Step Change in Output Current 75 Io max to 50 Io max 80 mV Settling Time within 1 Vout nominal 150 us Turn On Transient Start Up Time From On Off Control 20 ms S...

Page 3: ...ad current for minimum nominal and maximum input voltage at 25 C Figure 2 Power dissipation vs load current for minimum nominal and maximum input voltage at 25 C 0 0 3 0 6 0 9 1 2 1 5 1 8 2 1 2 4 2 7 3 3 3 16 21 26 31 36 41 46 51 56 61 66 71 INPUT VOLTAGE V INPUT CURRENT A Figure 3 Typical full load input characteristics at room temperature 75Vin 18Vin 24Vin 48Vin 24Vin 18Vin 48Vin 75Vin DS_L36SA3...

Page 4: ...ient at zero load current 5 ms div Vin 48V Top Trace Vout 1V div Bottom Trace ON OFF input 5V div For Positive Remote On Off Logic Figure 6 Turn on transient at full rated load current resistive load 5 ms div Vin 48V Top Trace Vout 1V div Bottom Trace ON OFF input 5V div Figure 7 Turn on transient at zero load current 5 ms div Vin 48V Top Trace Vout 1V div Bottom Trace ON OFF input 5V div 0 0 0 0 ...

Page 5: ... current 75 50 75 of Io max di dt 1A µs Load cap 330µF 35mΩ ESR solid electrolytic capacitor and 1µF ceramic capacitor Top Trace Vout 100mV div 200us div Bottom Trace I out 3 75A div Scope measurement should be made using a BNC cable length shorter than 20 inches Position the load between 51 mm to 76 mm 2 inches to 3 inches from the module Figure 10 Test set up diagram showing measurement points f...

Page 6: ...rce impedance and 33µF electrolytic capacitor 500 mA div 2us div Figure 12 Input reflected ripple current is through a 12µH source inductor at nominal input voltage and rated load current 20 mA div 2us div Strip Copper Vo Vo 10u 1u SCOPE RESISTIVE LOAD Figure 13 Output voltage noise and ripple measurement test setup 0 0 DS_L36SA3R315_02142007 6 ...

Page 7: ...t Io 10A 10 mV div 2us div Load capacitance 1µF ceramic capacitor and 10µF tantalum capacitor Bandwidth 20 MHz Scope measurements should be made using a BNC cable length shorter than 20 inches Position the load between 51 mm to 76 mm 2 inches to 3 inches from the module Figure 15 Output voltage vs load current showing typical current limit curves and converter shutdown points 0 DS_L36SA3R315_02142...

Page 8: ...support team DESIGN CONSIDERATIONS Input Source Impedance The impedance of the input source connecting to the DC DC power modules will interact with the modules and affect the stability A low ac impedance input source is recommended If the source inductance is more than a few µH we advise adding a 10 to 100 µF electrolytic capacitor ESR 0 7 Ω at 100 kHz mounted close to the input of the module to ...

Page 9: ...ng a logic low and off during logic high Positive logic turns the modules on during logic high and off during logic low Remote on off can be controlled by an external switch between the on off terminal and the Vi terminal The switch can be an open collector or open drain For negative logic if the remote on off feature is not used please short the on off pin to Vi For positive logic if the remote o...

Page 10: ...uit configuration for trim up increase output voltage If the external resistor is connected between the TRIM and SENSE the output voltage set point increases Fig 19 The external resistor value required to obtain a percentage output voltage change is defined as Ω K up Rtrim 2 10 511 1 225 100 Vo 11 5 Ex When Trim up 10 5V 1 1 5 5V Ω K up Rtrim 168 2 10 10 511 10 1 225 10 100 5 11 5 The output volta...

Page 11: ...n the neighboring PWB and the top of the power module is constantly kept at 6 35mm 0 25 Note Wind Tunnel Test Setup Figure Dimensions are in millimeters and Inches 12 7 0 5 MODULE AIR FLOW 50 8 2 0 FACING PWB PWB AIR VELOCITY AND AMBIENT TEMPERATURE MEASURED BELOW THE MODULE Figure 20 Wind tunnel test setup Thermal Derating Heat can be removed by increasing airflow over the module To enhance syste...

Page 12: ...IVE INPUT VOLTAGE 4 NC NOT CONNECTED 5 ON OFF REMOTE ON OFF 6 TRIM OUTPUT VOLTAGE TRIM 7 SENSE OPTION NEGATIVE OUTPUT VOLTAGE SENSE 8 VOUT NEGATIVE OUTPUT VOLTAGE 9 VOUT POSITVE OUTPUT VOLTAGE 10 SENSE OPTION POSITVE OUTPUT VOLTAGE SENSE 11 NC NOT CONNECTED ALL PINS ARE COPPER WITH TIN PLATING DS_L36SA3R315_02142007 12 ...

Page 13: ...t your local sales CONTACT www delta com tw dcdc USA Telephone East Coast 888 335 8201 West Coast 888 335 8208 Fax 978 656 3964 Email DCDC delta corp com Europe Telephone 41 31 998 53 11 Fax 41 31 998 53 53 Email DCDC delta es tw Asia the rest of world Telephone 886 3 4526107 x6220 Fax 886 3 4513485 Email DCDC delta com tw WARRANTY Delta offers a two 2 year limited warranty Complete warranty infor...

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