Delta Electronics Delphi Series E24SR Datasheet Download

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DS_E24SR05012_01032008

MECHANICAL DRAWING

Surface-mount

module

Through-hole

module

Pin No.

Name

Function

-Vin

Negative input voltage
Remote ON/OFF
Positive input voltage
Positive output voltage
Positive remote sense
Output voltage trim
Negative remote sense
Negative output voltage

2
3
4
5
6

ON/OFF
+Vin
+Vout
+SENSE
TRIM
-SENSE
-Vout

7
8

Summary of Contents for Delphi Series E24SR

Page 1: ...DC DC converters are the latest offering from a world leader in power systems technology and manufacturing Delta Electronics Inc This product family is available in either a through hole or surface mounted package and provides up to 66 watts of power or 20A of output current 3 3V and below in an industry standard footprint and pinout The E24SR converter operates from an input voltage of 18V to 36V...

Page 2: ...perating Output Current Range 0 12 A Output Over Current Protection Output Voltage 10 Low 110 140 DYNAMIC CHARACTERISTICS Output Voltage Current Transient 10µF Tan 1µF Ceramic load cap 0 1A µs Positive Step Change in Output Current 50 Io max to 75 Io max 150 250 mV Negative Step Change in Output Current 75 Io max to 50 Io max 150 250 mV Settling Time within 1 Vout nominal 150 us Turn On Transient ...

Page 3: ...in 12 Figure 1 Efficiency vs load 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 0 5 1 0 1 5 2 0 2 5 3 0 3 5 4 0 18 20 22 24 26 28 30 32 34 36 Input Voltage V Input Current A Figure 3 Typical full load input characteristics at room temperature 36Vin 24Vin 18Vin 24Vin 36Vin ...

Page 4: ...10V div Figure 5 Turn on transient at zero load current 2 ms div Vin 24V Top Trace Vout 2 0V div Bottom Trace ON OFF input 10V div For Positive Remote On Off Logic Figure 6 Turn on transient at full rated load current resistive load 2 ms div Vin 24V Top Trace Vout 2 0V div Bottom Trace ON OFF input 10V div Figure 7 Turn on transient at zero load current 2 ms div Vin 24V Top Trace Vout 2 0V div Bot...

Page 5: ...ESR solid electrolytic capacitor and 1µF ceramic capacitor Top Trace Vout 100mV div 200us div Bottom Trace Iout 5A 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 for Input Terminal Ripple Current and Input Reflected Ripple Curr...

Page 6: ...0 4 0 6 0 2 4 6 8 10 12 14 1 Loadt Current A Output Voltage V 6 Figure 14 Output voltage ripple at nominal input voltage and rated load current Io 12A 20 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 fro...

Page 7: ...contact Delta s technical 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 t...

Page 8: ...rent exceeds the OCP set point the modules will automatically shut down and enter hiccup mode The modules will try to restart after shutdown If the overload condition still exists the module will shut down again This restart trial will continue until the overload condition is corrected Over Voltage Protection The modules include an internal output over voltage protection circuit which monitors the...

Page 9: ...ure 19 Circuit 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 Δ Δ Δ 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 13 168 2 10 10 511 10 225 1 10 100 5 1...

Page 10: ... wind tunnel The space between 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 ove...

Page 11: ...DS_E24SR05012_01032008 11 PICK AND PLACE LOCATION SURFACE MOUNT TAPE REEL RECOMMENDED PAD LAYOUT SMD ...

Page 12: ...40 2nd Ramp up temp 1 0 3 0 C sec Over 200 C 40 50sec Cooling down rate 3 C sec Note The temperature refers to the pin of E24SR measured on the pin Vout joint LEAD FREE SAC PROCESS RECOMMEND TEMP PROFILE Temp Time 150 200 100 140 sec Time Limited 90 sec above 217 217 Preheat time Ramp up max 3 sec Ramp down max 4 sec Peak Temp 240 245 25 Note The temperature refers to the pin of E24SR measured on ...

Page 13: ...hrough hole module Pin No Name Function 1 Vin Negative input voltage Remote ON OFF Positive input voltage Positive output voltage Positive remote sense Output voltage trim Negative remote sense Negative output voltage 2 3 4 5 6 ON OFF Vin Vout SENSE TRIM SENSE Vout 7 8 ...

Page 14: ...efer to part numbering system above or contact your local sales office 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 Phone 41 31 998 53 11 Fax 41 31 998 53 53 Email DCDC delta es com Asia the rest of world Telephone 886 3 4526107 ext 6220 Fax 886 3 4513485 Email DCDC delta com tw WARRANTY Delta offers a...

Page 15: ...DS_E24SR05012_01032008 15 at any time without notice ...

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