E36SC05025 DELTA | Alldatasheet
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DS_E36SC05025_08162013 E-mail: DCDC@delta.com.tw http://www.deltaww.com/dcdc
FEATURES
High efficiency: 91% @ 5V/25A Size: 58.4x22.8x11.0mm (2.30”x0.90”x0.43”) w/o heat-spreader 58.4x22.8x12.7mm (2.30”x0.90”x0.50”) with heat-spreader Industry standard footprint and pinout Fixed frequency operation SMD and through-hole versions Input UVLO OTP and output OVP Output OCP hiccup mode Output voltage trim down : -20% Output voltage trim up: +10% at Vin>20V Monotonic startup into normal and pre-biased loads 1500V isolation and basic insulation No minimum load required No negative current during power or enable on/off ISO 9001, TL 9000, ISO 14001, QS 9000, OHSAS18001 certified manufacturing facility UL/cUL 60950-1 (US & Canada) recognized Delphi Series E36SC050, Eighth Brick Family DC/DC Power Modules: 18~75V in, 5.0V/25A out, 125W The Delphi Series E36SC050, Eighth Brick, 18V~75Vin input, single output, isolated DC/DC converters, are the latest offering from a world leader in power systems technology and manufacturing ― Delta Electronics, Inc. This product family provides up to 1 25 watts of power or 25A of output current. With creative design technology and optimization of component placement, these converters possess outstanding electrical and thermal performanc e, as well as extremely high reliability under highly stressful operating conditions. Typical efficiency of the 5V/25A module is greater than 91%.
APPLICATIONS
Optical Transport Data Networking Communications Servers OPTIONS Negative or Positive remote On/Off Surface-mount/Through-hole Open frame/Heat spreader
DS_E36SC05025_08162013 E-mail: DCDC@delta.com.tw http://www.deltaww.com/dcdc TECHNICAL SPECIFICATIONS (TA=25°C, airflow rate=100 LFM, Vin=48Vdc, nominal Vout unless otherwise noted.) Note1: For applications with higher output capacitive load, please contact Delta. Note2: Trim down range -20% for 18Vin ~75Vin, Trim up range +10% for 20Vin ~ 75Vin. PARAMETER NOTES and CONDITIONS E36SC05025 (Standard) Min. Typ. Max. Units ABSOLUTE MAXIMUM RATINGS Input Voltage Vdc Continuous 0 80 Vdc Transient (100ms) 100ms 100 Vdc Operating Ambient Temperature -40 85 °C Storage Temperature -55 125 °C Input/Output Isolation Voltage 1500 Vdc INPUT CHARACTERISTICS Operating Input Voltage 18 48 75 Vdc Input Under-Voltage Lockout Turn-On Voltage Threshold 16.5 17.2 17.9 Vdc Turn-Off Voltage Threshold 15.5 16.2 16.9 Vdc Lockout Hysteresis Voltage 0.3 1.0 1.8 Vdc Maximum Input Current Full Load, 18Vin 8.9 A No-Load Input Current Vin=48V, Io=0A 55 mA Off Converter Input Current Vin=48V, Io=0A 5 mA Inrush Current ( I2t) 1 A2s Input Reflected-Ripple Current P-P thru 12µH inductor, 5Hz to 20MHz 20 mA Input Voltage Ripple Rejection 120 Hz 50 dB OUTPUT CHARACTERISTICS Output Voltage Set Point Vin=48V, Io=Io.max, Tc=25°C 4.925 5 5.075 Vdc Output Regulation Over Load Io=Io, min to Io, max ±5 mV Over Line Vin=18V to 75V ±5 mV Over Temperature Tc=-40°C to 85°C ±50 mV Total Output Voltage Range Over sample load, line and temperature 4.85 5 5.15 V Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth Peak-to-Peak Vin=48V, Full Load, 1µF ceramic, 10µF tantalum 70 mV RMS Vin=48V, Full Load, 1µF ceramic, 10µF tantalum 23 mV Operating Output Current Range Vin=18V to75V 0 25 A Output Over Current Protection(hiccup mode) Output Voltage 10% Low 27.5 35 A DYNAMIC CHARACTERISTICS Output Voltage Current Transient 48Vin, 10µF Tan & 1µF Ceramic load cap, 0.1A/µs Positive Step Change in Output Current 75% Io.max to 50% Io.max 200 mV Negative Step Change in Output Current 50% Io.max to 75% Io.max 200 mV Settling Time (within 1% Vout nominal) 200 µs Turn-On Transient Start-Up Time, From On/Off Control 55 mS Start-Up Time, From Input 55 mS Output Capacitance (note1) Full load; 5% overshoot of Vout at startup 10000 µF EFFICIENCY 100% Load Vin=24V 90.5 % 100% Load Vin=48V 91 % 60% Load Vin=48V 91.5 % ISOLATION CHARACTERISTICS Input to Output 1500 Vdc Isolation Resistance 10 MΩ Isolation Capacitance 1000 pF FEATURE CHARACTERISTICS Switching Frequency 300 KHz ON/OFF Control, Negative Remote On/Off logic Logic Low (Module On) Von/off 0.8 V Logic High (Module Off) Von/off 3.0 5 V ON/OFF Control, Positive Remote On/Off logic Logic Low (Module Off) Von/off 0.8 V Logic High (Module On) Von/off 3.0 5 V ON/OFF Current (for both remote on/off logic) Ion/off at Von/off=0.0V mA Leakage Current (for both remote on/off logic) Logic High, Von/off=5V Output Voltage Trim Range(note 2) Pout ≦ max rated power,Io ≦ Io.max -20 10 % Output Voltage Remote Sense Range Pout ≦ max rated power,Io ≦ Io.max 10 % Output Over-Voltage Protection Over full temp range; % of nominal Vout 115 140 % GENERAL SPECIFICATIONS MTBF Io=80% of Io, max; Ta=25°C, airflow rate=300LFM 7.3 Mhours hours Weight Without heat spreader 24.6 grams Weight With heat spreader 33.2 grams Over-Temperature Shutdown ( Without heat spreader) Refer to Figure 18 for Hot spot 1 location (48Vin,80% Io, 200LFM,Airflow from Vin+ to Vin-) 132 °C Over-Temperature Shutdown (With heat spreader) Refer to Figure 21 for Hot spot 2 location (48Vin,80% Io, 200LFM,Airflow from Vin+ to Vin-) 120 °C Over-Temperature Shutdown ( NTC resistor ) Refer to Figure 18 for NTC resistor location 130 °C Note: Please attach thermocouple on NTC resistor to test OTP function, the hot spots’ temperature is just for reference.
DS_E36SC05025_08162013 E-mail: DCDC@delta.com.tw http://www.deltaww.com/dcdc 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 so urce inductance is more than a few μH, we advise 100μF electrolytic capacitor (ESR < 0.7 Ω at 100 kHz) mounted close to the input of the module to improve the stability. Layout and EMC Considerations Delta’s DC/DC power modules are designed to operate in a wide variety of systems and applications. For design assistance with EMC compliance and related PWB layout issues, please contact Delta’s technical support team. An external input filter module is available for easier EMC compliance design. Below is the reference design for an input filter tested with E36SC05025 to meet class B in CISSPR 22. Schematic and Components List Cin is 100uF low ESR Aluminum cap: CY is 1nF ceramic cap: CX1,CX2 are 2.2uF ceramic cap: CY1,CY2 are 3.3nF ceramic cap: L1,L2 are common-mode inductor ,L1=L2=0.63mH: Test Result:Vin=48V,Io=25A,
1 MHz 10 MHz150 kHz 30 MHz
10.0 20.0 30.0 40.0 50.0 60.0 70.0 0.0 80.0 dBμV Limits 55022MQP 55022MAV Transducer LISNPUL Traces PK+ AV Blue Line is quasi peak mode;green line is average mode. Safety Considerations The power module must be installed in compliance with the spacing and separation requirements of the end-user’s safety agency standa rd, i.e., UL60950-1, CSA C22.2 NO. 60950 -1 2nd and IEC 60950 -1 2nd : 2005 and EN 60950 -1 2nd: 2006+A11+A1: 2010, if the system i n which the power module is to be used must meet safety agency requirements. Basic insulation based on 75 Vdc input is provided between the input and output of the module for the purpose of applying insulation requirements when the input to this DC-to-DC converter is identified as TNV-2 or SELV. An additional evaluation is needed if the source is other than TNV-2 or SELV. When the input source is SELV circuit, the power module meets SELV (safety extra -low voltage) requirements. If the input source is a hazardous voltage which is greater than 60 Vdc and less than or equal to 75 Vdc, for th e module’s output to meet SELV requirement s, all of the following must be met: The input source must be insulated from the ac mains by reinforced or double insulation. The input terminals of the module are not operator accessible. A SELV reliability test is conducted on the system where the mod ule is used , in combination with the module, to ensure that under a single fault, hazardous voltage does not appear at the module’s output. When installed into a Class II equipment (without grounding), spacing consideration should be given to the end -use installation, as the spacing between the module and mounting surface have not been evaluated. The power module has extra -low voltage (ELV) outputs when all inputs are ELV. This power module is not internally fused. To achieve optimum safety and system protection, an input line fuse is highly recommended. The safety agencies r equire a normal-blow fuse with 20A maximum rating to be installed in the ungrounded lead. A lower rated fuse can be used based on the maximum inrush transient energy and maximum input current. Soldering and Cleaning Considerations Post solder cleaning is usually the final board assembly process before the board or system undergoes electrical testing. Inadequate cleaning and/or drying may lower the reliability of a power module and severely affect the
DS_E36SC05025_08162013 E-mail: DCDC@delta.com.tw http://www.deltaww.com/dcdc reliability of a power module and severely affect the finished circuit board assembly test. Adequate cleaning and/or drying is especially important for un-encapsulated and/or open frame type power modules. For assistance on appropriate soldering and cleaning procedures, please contact Delta’s technical support team. FEATURES DESCRIPTIONS Over-Current Protection The modules include an internal output over -current protection circuit, which will endure current limiting for an unlimited duration dur ing output overload. If the output current exceeds the OCP set point, the modules will shut down (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 wil l continue until the overload condition is corrected. Over-Voltage Protection The modules include an internal output over -voltage protection circuit, which monitors the voltage on the output terminals. If this voltage exceeds the over-voltage set point, the protection circuit will constrain the max duty cycle to limit the output voltage, if the output voltage continuously increases the modules will shut down, and then restart after a hiccup -time (hiccup mode). Over-Temperature Protection The over -temperature protection consists of circuitry that provides protection from thermal damage. If the temperature exceeds the over -temperature threshold the module will shut down .The module will restart after the temperature is within specification. Remote On/Off The remote on/off feature on the module can be either negative or positive logic. Negative logic turns the module on during a logic low and off during a logic high. Positive logic turns the modules on during a logic high and off during a 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 on/off feature is not used, please leave the on/off pin to floating. Vo(+) Sense(+) Vo(-) trim Vi(+) Vi(-) ON/OFF Rload Sense(-) Figure 16: Remote on/off implementation Output Voltage Adjustment (TRIM) To increase or decrease the output voltage set point, connect an external resistor between the TRIM pin and either the S ENSE(+) or SENSE( -). The TRIM pin should be left open if this feature is not used. For trim down, t he external resistor value required to obtain a percentage of output voltage change △% is defined as: 511 Ex. When Trim-down -20% (5.0V×0.8=4.0V) KKdownRtrim 33.1522.1020 511 For trim up, t he external resistor value require d to obtain a percentage output voltage change △% is defined as: KupRtrim 22.10511 1.225 ) (100 Vo11.5 Ex. When Trim-up +10% (5.0V×1.1=5.5V) KupRtrim 16822.1010 511 10225.1 )10100(0.511.5 The output voltage can be increased by both the remote sense and the trim, however the maximum increase is the larger of either the remote sense or the trim, not the sum of both. When using remote sense and trim, the output voltage of the module is usually increased, which increases the power output of the module with the same output current. Care should be taken to ensure that the maximum output power of the module remains at or below the maximum rated power.
DS_E36SC05025_08162013 E-mail: DCDC@delta.com.tw http://www.deltaww.com/dcdc THERMAL CONSIDERATIONS Thermal management is an important part of the system design. To ensure proper, reliable operation, sufficient cooling of the power module is needed over the entire temperature range of the module. Convection cooling is usually the dominant mode of heat transfer. Hence, the choice of equipment to characterize the thermal performance of the power module is a wind tunnel. Thermal Testing Setup Delta’s DC/DC power modules are characterized in heated vertical wind tunnels that simulate the thermal environments encountered in most electronics equipment. This type of equipment commonly uses vertically mounted circuit cards in cabinet racks in which the power modules are mounted. The following figure shows the wind tunnel characterization setup. The power module is mounted on a test PWB and is vertically positioned within the wind tunnel. The space between the neighboring PWB and the top of the power module is constantly kept at 6.35mm (0.25’’). AIR FLOW MODULE PWB 50.8(2.00") AIR VELOCITY AND AMBIENT TEMPERATURE SURED BELOW THE MODULE FANCING PWB Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches) Figure 17: Wind tunnel test setup Thermal Derating Heat can be removed by increasing airflow over the module. To enhance system reliability, the power module should always be operated below the maximum operating temperature. If the temperature exceeds the maximum module temperature, reliability of the unit may be affected.
DS_E36SC05025_08162013 E-mail: DCDC@delta.com.tw http://www.deltaww.com/dcdc P11 PICK AND PLACE LOCATION RECOMMENDED PAD LAYOUT (SMD) TAPE & REEL PACKAGE FOR SURFACE MOUNT MODELS
DS_E36SC05025_08162013 E-mail: DCDC@delta.com.tw http://www.deltaww.com/dcdc P12 LEADED (Sn/Pb) PROCESS RECOMMEND TEMP. PROFILE(for SMD models) Note: The temperature refers to the pin of E36SC, measured on the +Vout pin joint. LEAD FREE (SAC) PROCESS RECOMMEND TEMP. PROFILE(for SMD models) 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 E36SC05025, measured on the +Vout pin joint.
DS_E36SC05025_08162013 E-mail: DCDC@delta.com.tw http://www.deltaww.com/dcdc P13 MECHANICAL DRAWING (WITH HEAT SPREADER) For modules with through-hole pins and the optional heatspreader, they are intended for wave soldering assembly onto system boards; please do not subject such modules through reflow temperature profile.
DS_E36SC05025_08162013 E-mail: DCDC@delta.com.tw http://www.deltaww.com/dcdc P14 MECHANICAL DRAWING (WITHOUT HEAT SPREADER) Surface-mount module Through-hole module Pin No. Name Function +Vin ON/OFF -Vin -Vout -SENSE TRIM +SENSE +Vout Positive input voltage Remote ON/OFF Negative input voltage Negative output voltage Negative remote sense Output voltage trim Positive remote sense Positive output voltage Pin Specification: Pins 1-3,5-7 1.00mm (0.040”) diameter Pins 4 & 8 2. 1.50mm (0.059”) diameter Note: All pins are copper alloy with matte Tin(Pb free) plated over Nickel under plating.
DS_E36SC05025_08162013 E-mail: DCDC@delta.com.tw http://www.deltaww.com/dcdc P15 PART NUMBERING SYSTEM E 36 S C 050 25 N K F A Form Factor Input Voltage Number of Outputs Product Series Output Voltage Output Current ON/OFF Logic Pin Length Option Code E - 1/8 Brick 36- 18V~75V S – Single Series Number 050- 5.0V 25- 25A N – Negative K – 0.110’’ N - 0.145” R - 0.170” M - SMD pin F - RoHS 6/6 (Lead Free) Space - RoHS5/6 A – Standard Function H– With Heatspreader MODEL LIST MODEL NAME INPUT OUTPUT EFF @ 100% LOAD E36SC05025NKFA 18V~75V 8.9A 5.0V 25A 91.0% @ 48Vin Default remote on/off logic is negative and pin length is 0.170” For different remote on/off logic and pin length, please refer to part numbering system above or contact your local sales office. For modules with through-hole pins and the optional heatspreader, they are intended for wave soldering assembly onto system boards; please do not subject such modules through reflow temperature profile. CONTACT: www.deltaww.com/dcdc USA: Telephone: East Coast: 978-656-3993 West Coast: 510-668-5100 Fax: (978) 656 3964 Email: DCDC@delta-corp.com Europe: Phone: +31-20-655-0967 Fax: +31-20-655-0999 Email: DCDC@delta-es.com Asia & the rest of world: Telephone: +886 3 4526107 ext 6220~6224 Fax: +886 3 4513485 Email: DCDC@delta.com.tw WARRANTY Delta offers a two ( 2) year limited warranty. Complete warranty information is listed on our web site or is available upon request from Delta. Information furnished by Delta is believed to be accurate and reliable. However, no responsibility is assumed by Delta for its use, nor for any infringements of patents or other rights of third parties, which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Delta. Delta reserves the right to revise these specifications