Delta Electronics Series 240W User's Manual
Contents
1. Delphi Series E48SB 240W Eighth Brick Bus Converter DC DC Power Modules 48Vin 12V 20A out ET Delta Electronics Inc a world leader in power systems technology and Bl manufacturing has introduced the E48SB eighth brick sized 240W bus converter into their Delphi Series of board mounted DC DC power converters to support the intermediate bus architecture to power multiple downstream non isolated point of load POL converters The E48SB product family features an input voltage of 38V to 55V and provides up to 240W 9 6V and above of power in an industry standard eighth brick footprint Typical efficiency of 12V module is 96 3 With optimized component placement creative design topology and numerous patented technologies the E48SB bus converters deliver outstanding electrical and thermal performance An optional heatsink is available for harsh thermal requirements DATASHEET DS E48SB12020 05222008 FEATURES Input voltage range 38V 55V Output 240W 44Vin and above Output 22 3A 44Vin and below High efficiency 96 3 12V 20A Size 58 4mm x 22 8mm x 11 4mm 2 28 x 0 90 x 0 45 Industry standard pinout Fully protected Input UVLO OVP Output OCP and OTP Parallelable for higher output power 2250V isolation Basic insulation Monotonic startup No minimum load required ISO 9001 TL 9000 ISO 14001 QS9000 OHSAS18001 certified manufacturing facility UL cUL 60950 US amp Canada Recognized and TUV EN609502. Certified CE mark meets 73 23 EEC and 93 68 EEC directives OPTIONS Positive On Off logic Short pin lengths Heatsink available for extended operation OTP and OCP mode Auto restart or latch APPLICATIONS Datacom Netowrking Wireless Networks Optical Network Equipment Server and Data Storage Industrial Testing Equipment A NELIA Delta Electronics Inc TECHNICAL SPECIFICATIONS T 25 C airflow rate 300 LFM Vj 248Vdc nominal Vout unless otherwise noted PARAMETER NOTES and CONDITIONS E48SB12020 Standard Min Typ Max Units Input Voltage Continuous 60 Vdc Operating Temperature Refer to Figure 18 for the measuring point 40 128 ne Storage Temperature 55 125 C Input Output Isolation Voltage 2250 Vdc Operating Input Voltage 38 48 99 Vdc Input Under Voltage Lockout Turn On Voltage Threshold 35 36 37 Vdc Turn Off Voltage Threshold 33 34 35 Vdc Lockout Hysteresis Voltage 1 2 3 Vdc Input Over Voltage Lockout Turn Off Voltage Threshold 57 5 58 5 59 7 Vdc Turn On Voltage Threshold 55 5 56 5 57 5 Vdc Lockout Hysteresis Voltage 1 2 3 Vdc Maximum Input Current 100 Load 44V Vin 5 68 A No Load Input Current 85 100 mA Off Converter Input Current 10 11 mA Inrush Current I t 0 02 A s Input Reflected Ripple Current P P thru 12uH inductor 5Hz to 20MHz 10 20 mA Outpu
3. rated load current 50 mV div 2us div Load capacitance 1uF ceramic capacitor and 10uF 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 DS EA48SB12020 05222008 Ea MES DESIGN CONSIDERATIONS Input Source Impedance Test Result The impedance of the input source connecting to the DC DC power modules will interact with the modules Test result is in compliance with CISPR 22 class B which and affect the stability A low ac impedance input source is shown as below is recommended If the source inductance is more than a few uH we advise adding a 33 to 220pF electrolytic dBuU sg ee capacitor ESR 0 5 O at 100 kHz mounted close to 70 zaz the input of the module to improve the stability abi NAPE EPPP N r CISPR22 ClassB Conducted AU Layout and EMC Considerations icone ale ims Delta s DC DC power modules are designed to operate He 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 E S easier EMC compliance design Below is the example of nee _ using Delta latest FL75L10 A input filter tested with ov lo 20A average mode E48SB1202 B in CISSPR 22 a ms Soldering and Cleaning Co
4. Ma 100KHz Csz2uF ESRE01 a B20 10UKHz Figure 11 Test set up diagram showing measurement points for Input Terminal Ripple Current and Input Reflected Ripple Current Note Measured input reflected ripple current with a simulated source Inductance Ltest of 12 uH Capacitor Cs offset possible battery impedance Measure current as shown below DS EA48SB12020 05222008 amp Hainzl k gt gt Figure 10 Output voltage response to step change in load current 50 75 50 of lo max di dt 1A us Load cap 10uF tantalum capacitor and 1uF ceramic capacitor Top Trace Vout 200mV div 200us div Bottom Trace lout 10A 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 Ea MER ELECTRICAL CHARACTERISTICS CURVES P amp Hain ik gt gt i i i gt 44 Hainzl k gt gt Figure 12 Input Terminal Ripple Current i at full rated output Figure 13 Input reflected ripple current i through a 12uH current and nominal input voltage with 12uH source impedance source inductor at nominal input voltage and rated load current and 47uF electrolytic capacitor 100 mA div 2us div 20 mA div 20us div Hainrl k gt gt RESISTIVE LOAD Figure 14 Output voltage noise and ripple measurement test Figure 15 Output voltage ripple at nominal input voltage and setup
5. 222008 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 be shut down and enter in the auto restart mode or latch mode which is optional For auto restart mode the module will monitor the module temperature after shutdown Once the temperature of module is decreased by an OTP hystersis that is about 30 C the module will auto restart For latch mode the module will latch off once it shutdown Either cycling the input power or toggling the on off signal for one second can reset the latch 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 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 on off feature is not used please leave the on off pin floating Load Vo Figure 16 Remote on off implementation Current Sharing The modules are designed to operate in parallel without the use of any external current share circuitr
6. A at ES LONE Bat st pe cy n CJ C 2 LC NN CO J hed gt e E Qo C 2 NL LL S 3 W S I Na V ne CN ON V i CC C N KON x ars d 25 LO s ma S i Lt N WD pes M e eq e Sa em CN Ml o ical OJ M J IP i MS CO Y dj wA LL E LA bp aX 1 O0 0 040 DA oY Yes JAIN X N rn PR Des ees EN E x Sl DER H ATED CCGLDDL b L LG EN ae ATP t E dus A NL VU JC JIA 7 ZN NN icu 3 LS P RIP J d Nace 3 JAN A 7 AA LE a WITH 2 0 0 08 SHOUILDER SOLDER PLATED COPPER VV Z J VJ O wm Lope IN Vi V 5 poo d M S s n 9X s Ay LR Ae VEN BX EN SON UN H p ISHOU Fr x N XUA XU Xe 2 VA NM L LZLL LIN CNTTNT V7 TIAJ SIDE VIE K L L y NIA CN NE TE SS UN N C N C C N T AND N N N DiS AN D d N H 7 N LAT IVI LLIN OI se PAIN EE V V Nad NEIN d L o2 J y x lan A ON LZ Kt Xo rm E O Gf GEN N j Le NN Ns t ry o 7 ry X b ebd ng OLERANCES X Xmm tO0 5bmrm X XX in x0 02 in VON IN ae LO 95rv r d X X Vo A TA 1 N CY rv uo Yo D r6 t6 AN LIN T JL s VAY AAA Eu MTENET BE Pin No Name Function 1 Vin Positive input voltage 2 ON OFF Remote ON OFF 3 Vin Negative input voltage 4 Vout Negative output voltage 5 Vout Positive output voltage Pin Specification P
7. _E48SB12020_05222008 Logic Low Module On Von off 0 7 0 8 V Logic High Module Off Von off 2 18 V ON OFF Control Positive Remote On Off logic Logic Low Module Off Von off 0 7 0 8 V Logic High Module On Von off 2 18 V ON OFF Current for both remote on off logic lon off at Von off 0 0V 0 25 0 3 mA Leakage Current for both remote on off logic Logic High Von off 15V 30 uA GENERAL SPECIFICATIONS MTBF lo 80 of lo max 2 01 M hours Weight 31 76 grams Over Temperature Shutdown Refer to Figure 18 for the measuring point 130 C ELECTRICAL CHARACTERISTICS CURVES Loss W Efficiency 96 ome OV iN 48Vin 55Vin mee 38Vin 48Vin 55Vin 3 6 9 12 15 18 24 24 0 3 6 9 12 15 18 21 24 Output Current A Output Current A Figure 1 Efficiency vs load current for minimum nominal and Figure 2 Power loss vs load current for minimum nominal maximum input voltage at 25 C and maximum input voltage at 25 C 23 00 22 00 S 21 00 O M i lt 2 2 20 00 1 x gt tv B i S 19 00 48Vin ae 55Vin A 17 00 0 3 6 9 12 15 18 21 24 27 38 40 42 4 46 48 50 52 54 56 Output Current A Vin V Figure 3 Output voltage regulation vs load current showing Figure 4 Max output current vs input vo
8. ins 1 3 1 0mm 0 040 diameter Pins 4 5 1 5mm 0 060 diameter All pins are copper with Tin plating Pb free DS_E48 B12020 05222008 10 a MES PART NUMBERING SYSTEM E 48 S B 120 20 N F A Type of Input Number of Product Output Output ON OFF Pin Length Option Code Product Voltage Outputs Series Voltage Current Logic E Eighth 48 S Single B Bus 120 12V 20 20A N Negative R 0 170 F RoHS 6 6 A OCP OTP hiccup Brick 38V 55V Converter Default Default Lead Free B OCP OTP P Positive N 0 145 latch up K 0 110 MODEL LIST MODEL NAME OUTPUT EFF 100 LOAD 3BV 55V E48SB12020NRFA 38V 55V 240W 96 3 Note 1 Default remote on off logic is negative 2 Default Pin length is 0 170 3 Default OTP and output OVP OCP mode is auto restart 4 For different option please refer to part numbering system above or contact your local sales office CONTACT www delta com tw dcdc USA Europe Asia amp the rest of world Telephone Phone 41 31 998 53 11 Telephone 886 3 4526107 ext 6220 East Coast 888 335 8201 Fax 41 31 998 53 53 Fax 886 3 4513485 West Coast 888 335 8208 Email DCDC delta es com Email DCDC delta com tw Fax 978 656 3964 Email DCDC delta corp com 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
9. 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 at any time without notice DS EA48SB12020 05222008 11
10. ltage typical current limit curves and converter shutdown points for minimum nominal and maximum input voltage at room temperature DS_E48SB12020_05222008 Ea MER ELECTRICAL CHARACTERISTICS CURVES For Negative Remote On Off Logic HainzS k gt gt f d amp amp Maire 500k gt gt Figure 5 Turn on transient at full rated load current Figure 6 Turn on transient at zero load current 5 ms div Top 5 ms div Top Trace Vout 5V div Bottom Trace ON OFF Trace Vout 5V div Bottom Trace ON OFF input 2V div input 2V div For Positive Remote On Off Logic amp HainzSO k gt gt E Faint Sook gt gt Figure 7 Turn on transient at full rated load current Figure 8 Turn on transient at zero load current 5 ms div Top 5 ms div Top Trace Vout 5V div Bottom Trace ON OFF Trace Vout 5V div Bottom Trace ON OFF input 2V div input 2V div DS EA48SB12020 05222008 Ea MEM ELECTRICAL CHARACTERISTICS CURVES 4 Haim ik gt gt Figure 9 Output voltage response to step change in load current 50 75 50 of lo max di dt 0 1A us Load cap 10uF tantalum capacitor and 1uF ceramic capacitor Top Trace Vout 200mV div 200us div Bottom Trace lout 10A 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 33uF ESR 0 3
11. nhance 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 EA48SB12020 05222008 THERMAL CURVES fX CX A A m FN E S P cos n E o D 1m a D i Cui 10 7 7 it 1 jp EIE N Jo if I uri uu m m r j fo Hm urj Lau En fo r J A m No a d pA E E Q mj m u ur ur G J HEHE Q Figure 18 Temperature measurement location The allowed maximum hot spot temperature is defined at 128 C E48SB12020 Standard Output Current vs Ambient Temperature and Air Velocity Output Current A Vin 48V Transverse Orientation 22 500LFM 16 r Natural Convection 14 10 r 200LFM 300LFM 20 25 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature Figure 19 Output current vs ambient temperature and air velocity Vin 48V Transverse Orientation s ee sR Af Z PI wap T bE zZz Qf T p Eg GOGN y ArmA JOY jJ lt OUJZ U j B 7 x3 m I Vin Vout lo C aA w c Y ON IARE A ON Ur I 3 6 54 i j N ON Y 0 c9 Mim m 1 i p m Vout Lu E a
12. nsiderations Schematic and Components List 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 E48SB12020 reliability of a power module and severely affect the finished circuit board assembly test Adequate cleaning Series 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 C1 FL75L10 A FEATURES DESCRIPTIONS Over Current Protection C1 is 100uF 100V low ESR Aluminum cap C2 is 2 2uF ceramic cap The modules include an internal output over current C3 is 4 7nF ceramic capacitor protection circuit which will endure current limiting for FL75L10 A is Delta input EMI filter module an unlimited duration during output overload If the output current exceeds the OCP set point the modules will automatically shut down and enter in hiccup mode or latch mode which is optional For hiccup mode the module 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 For latch mode the module will latch off once it shutdown The latch is reset by either cycling the input power or by toggling the on off signal for one second DS EA48SB12020 05
13. t Voltage Set Point Vin 48V lo no load Ta 25 C 11 85 Vdc Output Voltage Regulation Over Load lo lo min to lo max 300 400 mV Over Line Vin 38V to 55V 4 3 4 5 V Over Temperature Tc 40 C to 105 C 250 mV Total Output Voltage Range over sample load line and temperature 8 9 13 75 V Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth Peak to Peak Full Load 1uF ceramic 10uF tantalum 80 100 mV RMS Full Load 1uF ceramic 10uF tantalum 20 40 mV Operating Output Power Range Output current range when Vin below 44V 0 22 3 A Output power range when Vin 44V and above 0 240 W Output Current Protection Vin 38V to 55V ig 130 Current share accuracy 2 units in parallel of rated output current EMEN 10 DYNAMIC CHARACTERISTICS Output Voltage Current Transient 48V 10uF Tan amp 1uF Ceramic load cap 0 1A us Positive Step Change in Output Current 5096 lo max to 7596 lo max 0 mV Negative Step Change in Output Current 75 lo max to 50 lo max 0 mV Settling Time Vo deviation recover to 10 of max i deviation Turn On Transient Start Up Time From On Off Control 10096 Load 10 16 ms Start Up Time From Input 10096 Load 16 28 ms Maximum Output Capacitance 3000 UF 100 Load 96 3 60 Load Switching Frequency 190 ISOLATION CHARACTERISTICS Input to Output 2250 Vdc Isolation Resistance 10 MQ Isolation Capacitance 1000 pF FEATURE CHARACTERISTICS Hz ON OFF Control Negative Remote On Off logic DS
14. y For design assistance with Parallel and related PWB layout issues please contact Delta s technical support team DS_E48 B12020 05222008 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 FACING PWB PWB MODULE AIR VELOCITY AND AMBIENT TEMPERATURE MEASURED BELOW THE MODULE 50 8 2 0 12 7 0 57 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 e
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