Delta Electronics S48SS User's Manual
Contents
1. Industrial Test Equipment DATASHEET ot yen62008 A NELTA Delta Electronics Inc DS 8488812001 06082006 TECHNICAL SPECIFICATIONS Ta 25 C airflow rate 300 LFM V 48Vdc nominal Vout unless otherwise noted PARAMETER NOTES and CONDITIONS S48SS12001NRFA Min Typ Max Units ABSOLUTE MAXIMUM RATINGS Input Voltage Continuous 80 Vdc Transient 100ms 100ms 100 Vdc Operating Temperature Refer to Figure 12 for the measuring point 40 100 C Storage Temperature 55 125 C Input Output Isolation Voltage 1 minute 1500 Vdc Operating Input Voltage 36 48 T9 V Input Under Voltage Lockout Turn On Voltage Threshold 33 8 34 5 35 8 V Turn Off Voltage Threshold 32 0 33 5 34 5 V Lockout Hysteresis Voltage 05 1 5 2 5 V Maximum Input Current 10096 Load 36Vin 0 6 A No Load Input Current 25 mA Off Converter Input Current 1 mA Inrush Current I t 0 01 A s Input Reflected Ripple Current P P thru 12uH inductor 5Hz to 20MHz 5 mA Input Voltage Ripple Rejection 120Hz 55 dB Output Voltage Set Point Vin 48V lo 50 lo max Tc 25 C 11 76 12 00 12 24 V Output Voltage Regulation Over Load lo lo min to lo max 12 60 mV Over Line Vin 36V to 75V 12 36 mV Over Temperature Tc 40 C to 100 C 100 300 ppm C Total Output Voltage Range Over sample load line and temperature TBD TBD V Output V2. FEATURES gt gt High efficiency 86 5 12V 1 25A Standard footprint Surface mountable Industry standard pin out Low profile 0 48 Fixed frequency operation Input UVLO Output OCP OVP No minimum load required 21 input voltage range ISO 9001 TL 9000 ISO 14001 QS 9000 OHSAS 18001 certified manufacturing facility UL cUL 60950 US amp Canada Recognized and TUV EN60950 Certified CE mark meets 73 23 EEC and 93 68 EEC directives Delphi Series S48SS 15W Family DC DC Power Module 48V in 12V 1 25A out The Delphi Series S48SS surface mountable 48V input single output isolated DC DC converter is the latest offering from a world leader in power system and technology and manufacturing Delta Electronics Inc This product family provides up to 15 watts of power or up to 4 5A of output current for 3 3V and below in an industry standard footprint With creative design technology and optimization of component placement the Delphi Series Small Power converters possess outstanding electrical and thermal performance as well as extremely high reliability under highly stressful operating conditions All models are protected from abnormal input output voltage and current conditions An encapsulated version is available for the most robust Applications performance in harsh environments Telecom DataCom Wireless Networks Optical Network Equipment Server and Data Storage
3. ambient temperature and air Vin 75V velocity DS s488812001 06082006 a E DESIGN CONSIDERATION 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 pH we advise adding a 10 to 100 uF electrolytic capacitor ESR 0 7 O 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 Application notes to assist designers in addressing these issues are pending release Safety Considerations The power module must be installed in compliance with the spacing and separation requirements of the end user s safety agency standard if the system in which the power module is to be used must meet safety agency requirements When the input source is 60Vdc or below 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 the module s output to meet SELV requirements all of th
4. and airflow rate The module s maximum case temperature is 100 C 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 s488812001 06082006 DS MECHANICAL DRAWING 45 5 1 797 T 2 3 4 5 6 ZU 5 Vout Vout Trim NC NC NC a 12 11 10 9 8 7 ad 19 ol E Ge o a o S e zm st o m l o S lt Tok EFE cA US E de d ss e aye 2 50 0 098 12x 3 30 0 1307 5 00 0 197 E 5 00 0 197 10 00 0 394 5 00 0 197 30 00 1 1817 30 00 1 1817 BOTTOM VIEW RECOMMENDED PWB LAYOUT j i l L zi i pu Ll MES st 7 0 100 Ox Ox NOTES ol E DIMENSIONS ARE IN MILLIMETERS AND INCHES SIDE VIEW 7 N TOLERANCES X Xmm 0 5mm X XX in 0 02 in i ey N X XXmm 0 25mm X XXX in 0 010 in Pin No Name Function 1 Vout Positive output voltage 2 Vout Negative output voltage 3 Trim Output voltage trim 4 NC No Connection 5 NC No Connect
5. ul a tal 3 0 80 2 25 75 2 0 zi 1 5 1 0 65 0 5 60 0 0 0 25 0 5 0 75 1 1 25 0 25 0 5 0 75 1 1 25 OUTPUT CURRENT A OUTPUT CURRENT A Figure 1 Efficiency vs load current for minimum nominal and Figure 2 Power dissipation vs load current for minimum maximum input voltage at 25 C nominal and maximum input voltage at 25 C gt NORM T UKS s 10ms div 06 i Stopped 3 10ms div E CHiEV CHEN a lo 1 25A DC 101 DC 101 lo 0 125A 1 o 0 5 E 2 o z 0 4 beoe eee eee de eee plene needed ed 0 1 0 0 30 35 40 45 50 55 60 65 70 75 INPUT VOLTAGE V Figure 3 Typical input characteristics at room temperature Figure 4 Turn on transient at full rated load current resistive load 10 ms div Top Trace Vout 5V div Bottom Trace ON OFF Control 2V div DS s488812001 06082006 ES mS ELECTRICAL CHARACTERISTICS CURVES NORM 100k5 s 10ms div AVG 200k5 s 5ms div Stopped El 10ms div Stopped El 5ms div CHI EV CH2 2 i CHis5 mV CH2 l0my DC 11 DC 101 DC 101 i 3 RC 11 Figure5 Turn on transient at zero load current 10 ms div Top Figure 6 Output voltage response to step change in load Trace Vout 5V div Bottom Trace ON OFF Control 2V div current 50 75 50 of lo max di dt 0 1A us Load cap 10uF 100 mQESR tantalum capacitor and 1uF ceramic capacitor Top Trace Vout 50mV div Bottom
6. Bandwidth 20 MHz THERMAL CURVES S48SS12001NR A Output Current vs Ambient Temperature and Air Velocity Vin 60V Output Current A j ma ma ET o A ES OB o cec x V ecce eN er Nee er esce ce Q2 te 400LFM 844 YY T E Q e W r 05 pee Nee Kee ee Are C 04 u rS 0a eek se Nee es Bee See E E E co co o 0 0 75 80 85 90 95 100 105 Ambient Temperature T Top View Figure 12 Case temperature measurement location Pin locations are Figure 13 Output current vs ambient temperature and air velocity Vin for reference only lt 60V S48SS12001NR A Output Current vs Ambient Temperature and Air Velocity Vin 75V S48SS12001NR A Power Dissipation vs Ambient Temperature and Air Velocity Output Current A a Poen Dissipation Watts kar ee dee DBE ef ee ee ef id 26 eee Soon NA A A BOOUEM 24 posos ssl AL IN Re Ss ss dos 22 b Natural AS Di ke NN a a DO e o A it ei e a 200LFM 300LFM rr P End O4 ae la el ee la o ts rt A et uu d g po ee ie e 0 0 i 70 75 80 85 90 95 100 1 95 100 Ambient Temperature C Ambient Temperature C Figure 14 Output current vs ambient temperature and air velocity Figure 15 Power dissipation vs
7. Trace lout 0 5A div NORM 100kS s 10ms div Stopped q 10ms div CH2 l my RC T1 Vi 12uH 9 Cs 68uF 100V 68UF 100V feeen ESR 0 30 ESR 0 3 20 C 100KHz 20 C 100KHz Nea ue out see e e Figure 7 Test set up diagram showing measurement points for Figure 8 Input Reflected Ripple Current is at full rated Input Reflected Ripple Current Figure 8 Note Measured input reflected ripple current with a simulated source Inductance Lresr of 12 uH Capacitor Cs offset possible battery impedance output current and nominal input voltage with 12uH source impedance and 68uF electrolytic capacitor 2 mA div DS s488812001 06082006 ELECTRICAL CHARACTERISTICS CURVES Copper Strip S SCOPE RESISTIVE 9 LOAD Figure 9 Output voltage noise and ripple measurement test setup 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 OUTPUT VOLTAGE V 0 5 1 0 1 5 2 0 2 5 LOAD CURRENT A Figure 11 Output voltage vs load current showing typical current limit curves and converter shutdown points DS s488812001 06082006 NORM 200MS s 2us div Stopped q 2us div CHiEZmV H RC 11 1 Figure 10 Output voltage ripple at nominal input voltage and rated load current 20 mV div Load capacitance 1uF ceramic capacitor and 10uF tantalum capacitor
8. e following must be met The input source must be insulated from any hazardous voltages including the ac mains with reinforced insulation One Vi pin and one Vo pin are grounded or all the input and output pins are kept floating The input terminals of the module are not operator accessible A SELV reliability test is conducted on the system where the module is used to ensure that under a single fault hazardous voltage does not appear at the module s output Do not ground one of the input pins without grounding one of the output pins This connection may allow a non SELV voltage to appear between the output pin and ground DS s488812001 06082006 This power module is not internally fused To achieve optimum safety and system protection an input line fuse is highly recommended The safety agencies require a normal blow fuse with 1A 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 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 appr
9. ed 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 s488812001 06082006
10. gure 18 Circuit Configuration for Remote ON OFF I 4 gt THERMAL CONSIDERATIONS Thermal management is an important part of the system design To ensure proper reliable operation sufficient FACING PWB EWB cooling of the power module is needed over the entire MODULE E temperature range of the module Convection cooling is I usually the dominant mode of heat transfer Hence the choice of equipment to characterize the thermal performance of the power module is a wind AND AMBIENT tunnel TEMPERATURE MEASURED BELOW j j THE MODULE 50 8 2 0 Thermal Testing Setup ee Delta s DC DC power modules are characterized in T heated vertical wind tunnels that simulate the thermal Nu LL 10 04 environments encountered in most electronics equipment This type of equipment commonly uses Note Wind Tunnel Test Setup Figure Dimensions are in millimeters and Inches vertically mounted circuit cards in cabinet racks in which Figure 19 Wind tunnel test setup 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 or a heat sink is 6 35mm 0 25 Thermal Derating Heat can be removed by increasing airflow over the module Figure 13 and 14 show maximum output is a function of ambient temperature
11. ion 6 NC No Connection 7 NC No Connection 8 ON OFF ON OFF Logic 9 NC No Connection 10 NC No Connection 11 Vin Negative input voltage 12 Vin Positive input voltage DS s488812001 06082006 PART NUMBERING SYSTEM S 48 S S 120 N R JE A Form Input Number of Product Output Output ON OFF Pin Length Option E Factor Voltage Outputs Series Voltage Current Logic Code S Small 48V S Single S SMD 120 12 0V 01 1 25A N Negative R SMD Pin F RoHS 6 6 A Standard Power 36V 75V P Positive Lead Free Function MODEL LIST MODEL NAME INPUT OUTPUT EFF 100 LOAD S48SS1R805NRFA 36V 75V 0 5A 1 8V 5 0A 80 0 S485S2R504NRFA 36V T8V 83 0 S4B553R303NRFA 36V T5V 84 0 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 886 3 4513485 West Coast 888 335 8208 PA d Adae Email DCDC delta com tw Fax 978 656 3964 Email DCDC delta es com 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 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 grant
12. oltage Ripple and Noise 5Hz to 20MHz bandwidth Peak to Peak Full Load 1uF ceramic 10uF tantalum 50 100 mV RMS Full Load 1uF ceramic 10pF tantalum 15 25 mV Operating Output Current Range 0 1 25 A Output DC Current Limit Inception Output Voltage 1096 Low 1 5 2 25 A Output Voltage Current Transient 48V 10pF Tan amp 1yF Ceramic load cap 0 1A us Positive Step Change in Output Current 50 lo max to 75 lo max 100 240 mV Negative Step Change in Output Current 75 lo max to 50 lo max 100 240 mV Setting Time to 196 of Final Value 600 us Turn On Transient Start Up Time From On Off Control 35 50 ms Start Up Time From Input 35 50 ms Maximum Output Capacitance Full load 5 overshoot of Vout at startup 4T uF 100 Load 84 86 5 OLATIO ARA R Isolation Voltage 1500 V Isolation Resistance 100 MO Isolation Capacitance 500 pF Switching Frequency 260 kHz ON OFF Control Logic Low Module ON Logic Low Von off at lon off 1 0mA 0 0 8 V Logic High Von off at lon off 0 0 HA 15 V ON OFF Current lon off at Von off 0 0V 1 mA Leakage Current Logic High Von off 15V 50 HA Output Voltage Trim Range Across Trim Pin amp Vo or Vo Pout max rated power 10 10 Output Over Voltage Protection Over full temp range of nominal Vout 115 125 140 96 GENERAL SPECIFICATIONS Calculated MTBF lo 80 of lo max Tc 40 C 3 M hours Weight 12 5 grams 2 DS s488812001 06082006 ELECTRICAL CHARACTERISTICS CURVES amp 90 E 40 gt z o E O 35 E 85 a
13. opriate soldering and cleaning procedures please contact Delta s technical support team o 7 FEATURES DESCRIPTIONS m Over Current Protection The modules include an internal output over current protection circuit which will endure current limiting for an unlimited duration during output overload If the output current exceeds the OCP set point the modules will automatically 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 will 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 module will shut down and latch off The over voltage latch is reset by cycling the input power or by togging the ON OFF signal for one second Output Voltage Adjustment TRIM To increase or decrease the output voltage set point the modules may be connected with an external resistor between the TRIM pin and either the Vo or Vo The TRIM pin should be left open if this feature is not used Rtrim down Figure 16 Circuit configuration for trim down decrease output voltage If the external resistor is connected between the TRIM and Vo pins the output voltage set point decreases The external resistor value required
14. to obtain a percentage of output voltage change AVo is defined as 222 732 248 4AVo 3 32 ko 12AVo 0 07 Rtrim down Ex When trim down 10 12V X 0 9 10 8V 222 732 248 4 x 0 1 332 152 50 ko 12x0 1 0 07 Rtrim down DS s488812001 06082006 Figure 17 Circuit configuration for trim up increase output voltage If the external resistor is connected between the TRIM and Vo the output voltage set point increases The external resistor value required to obtain a percentage output voltage change Vo is defined as 25 668 AA 3 32 K0 12AVo 0 07 Rtrim up Ex When trim up 10 12V X 1 1 13 2V ae 3 32 19 39 KO 12x0 1 0 07 Rtrim up Care should be taken to ensure that the maximum output power of the module remains at or below the maximum rated power 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 If the remote on off feature is not used please short the on off pin to Vi for negative logic and let the pin open for positive logic V Vo e ON OFF Trim e Vi Vo e Fi
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