Delta Electronics Delphi L36SA Datasheet Download Page 12

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MECHANICAL DRAWING

OPEN FRAME VERSION

PIN

NO.

NAME

FUNCTION

1 CASE

(OPTION)

CASE

2 +VIN

POSITIVE

INPUT

VOLTAGE

3 –VIN

NEGATIVE

INPUT

VOLTAGE

4 NC

NOT

CONNECTED

ON/OFF

REMOTE

ON/OFF

TRIM OUTPUT

VOLTAGE

TRIM

–SENSE (OPTION) NEGATIVE OUTPUT VOLTAGE SENSE

–VOUT

NEGATIVE

OUTPUT

VOLTAGE

+VOUT

POSITVE

OUTPUT

VOLTAGE

+SENSE (OPTION) POSITVE OUTPUT VOLTAGE SENSE

11 NC

NOT

CONNECTED

ALL PINS ARE COPPER WITH TIN PLATING

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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