MURATA POWER SOLUTIONS Single Output LSN-10A D12 Models Features Non-Isolated 12VIN 1-5VOUT 10 Amp DC/DC s in SIP Packages
Contents
1. LSN 1 1 10 D12 LSN 1 2 10 D12 LSN 1 3 10 D12 LSN 1 1 10 D12 LSN 1 2 10 D12 LSN 1 3 10 D12 Efficiency vs Line Voltage and Load Current Output Current vs Ambient Temperature 91 Vertical mount air flow direction from pin 11 to pin 1 89 87 a ural Convection 100 Ifm gt 5 e 83 o co O Vin 10 8V gt Vin 12V 79 Vin 13 2V es 40 0 60 70 80 90 100 110 15 Ambient Temperature C 1 2 3 4 5 6 7 8 9 10 Load Current Amps LSN 1 5 10 D12 Efficiency vs Line Voltage and Load Current ORLONO DI s Output Current vs Ambient Temperature ertical mount air flow direction from pin o pin 91 Vertical t air flow direction f pin 11 to pin 1 89 87 T l 3 ural Convection a Z 3 100 Ifm gt c 83 6 8 Vin 10 8V A w 81 Vin 12V 79 Vin 13 2V 7 7 40 0 60 70 80 90 100 110 75 2 3 4 5 6 7 3 9 10 Ambient Temperature C Load Current Amps LSN 1 8 10 D12 LSN 1 8 10 D12 Efficiency vs Line Voltage and Load Current Output Current vs Ambient Temperature 93 Vertical mount air flow direction from pin 11 to pin 1 91 89 T ural Convection 87 F E 100 Ifm X 85 5 S 5 D 5 w 83 z gt Vin 10 8V ro 81 Vin 12V 79 Vin 13 2V 77 40 0 60 70 80 90 100 110 15 Ambient Temperature C 1 2 3 4 5 6 7 8 9 10 Load Current Amps D OATEL DC DC CONVERTERS www cd4power com MDC_LSN 10A D12_A02 Page 7 of2. i Case B5 combinations are available LAYOUT PATTERN l 0 34 burda Contact C amp D Technologies DATEL Contact C amp D Technologies DATEL for availability BF ne fener ce od Vertical Mounting ok i Standard 6 35 0 35 0 36 8 89 9 14 2 00 0 21 a 0 20 M ea 5 33 Bii pais 5 08 0 05 ISOLATING N 1 27 0 55 PAD 6 7 8 91011 13 97 12345 0 030 0 001 DIA 0 05 aoe 0 762 0 025 1 27 lL 0 030 0 001 DIA 0 05 Ae m 0 360 ie _ 0 400 1 000 0 500 9 14 WROD 1 27 10 16 25 40 12 70 _ 0 400 4 000 0 500 0 106 4EQ SP 5 EQ SP 10 16 25 40 12 70 2 53 0 100 2 54 0 100 2 54 4EQ SP 5EQ SP 0 100 2 54 0 100 2 54 0 56 0 53 i i 422 Ce ee eee gi l Case BSA 0300 LAYOUTPATTERN to Case B5B i Fa EE Serra y Horizontal Mounting 7 8 TOP VIEW 9 14 Reverse Pin a V tee ee 7 y Vertical Mounting 12 7 h 13 97 Tyco compatible l Ceo RECOMMENDED ee i a Function P59 Function P59 Function P59 an Een a n 1 Output 5 Common 9 No Pin a 2 Output 6 Common Vout Trim Pin 3 Sense r in 3 Sense remove DIMENSIONS IN INCHES mm 3 Sense 7 Input 11 On Off Control for B suffix models 4 Output 8 Input DDOATEL DC DC CONVERTERS www cd4power com MDC_LSN 10A D12_A02 Page 2 of 12 GED TECHNOLOGIES LSN 10A D12 Models ROWEN BLECTOORIGe DINI ION Single Output Non Isolated 12Vin 1 5Vout
3. GED TECHNOLOGIES POWER ELECTRONICS DIVISION Single Output LSN 10A D12 Models Non lsolated 12Vin 1 5VouT 10 Amp DC DC s in SIP Packages COMPLIANT 2002 95 EC For full details go to www cd4power com rohs Typical Units Features LSN Series D12 SIP s single in line packages are ideal building blocks for emerging on board power distribution schemes in which isolated 12V buses deliver Step down buck regulators for new power to any number of non isolated step down buck regulators LSN D12 DC DC s distributed 12V power architectures accept a 12V input 10 8V to 13 2V input range and convert it with the highest 12V input 10 8 13 2V range efficiency in the smallest space to a 1 1 1 1 2 1 3 1 5 1 8 2 2 5 3 3 or 5 Volt 1 to 5Vout 10A output fully rated at 10 Amps LSN D12 s are ideal point of use load power processors They typically require no external components Their vertical mount packages occupy a mere 0 7 square inches 4 5 sq cm and reversed pin vertical mount allows mounting to meet Outstanding performance competitor s keep out area Horizontal mount packages H suffix are only 0 34 e 1 25 setpoint accuracy inches 8 6mm high Efficiencies to 96 10 Amps The LSN s best in class power density is achieved with a fully synchronous e Noise as low as 30mVp p fixed frequency buck topology that also delivers high efficiency 96 for 5Vout Stable no load operation models low noise
4. Period 72msec 10A div A400usec div EM CONDUCTED RADIAT If you re designing with EMC in mind please note that all of DATEL s LSN D12 DC DC Converters have been characterized for conducted and radiated emissions in our EMI EMC laboratory Testing is conducted in an EMCO 5305 GTEM test cell utilizing EMCO automated EMC test software Conducted Radiated emissions are tested to the limits of FCC Part 15 Class B and CISPR 22 EN 55022 Class B Correlation to other specifications can be supplied upon request The corresponding emissions plots to FCC and CISPR 22 for model LSN 5 10 D12 appear below The published EMC test report is based on results with the highest possible output power model and is therefore representative of the whole LSN D12 series Contact DATEL s Applications Engineering Department for more details LSN 5 10 D12 Conducted Emissions FCC Part 15 Class B EN55022 Class B Limit 12 Vdc 4 5A Converter Output 5Vdc 10 Amps ass B Limit m g FCC Class B Limit L 2 EE LI xo 3 N gt xe 0 i nyata Y eN Conducted Emissions 0 1 1 0 10 0 Frequency MHz www cd4power com Radiated Emissions dBuV M Radiated Emissions dByV M Output Hiccup VIN 12V Output Short CIN COUT 22uF 20msec div LSN 5 10 D12 Radiated Emissions EN55022 Class B 10 Meters Converter Output 5Vdc
5. 10 Amps EN 55022 Class B Limit Radiated Emissions 100 1000 Frequency MHz LSN 5 10 D12 Radiated Emissions FCC Part 15 Class B 3 Meters Converter Output 5Vdc 10 Amps FCC Class B Limit Radiated Emissions 100 1000 Frequency MHz DDATEL DC DC CONVERTERS MDC_LSN 10A D12_A02 Page 11 of 12 GED TECHNOLOGIES LSN 10A D12 Models POWER ELECTRONICS DIVISION Single Output Non lsolated 12Vin 1 5Vout 10A DC DC s in SIP Packages PART NUMBER STRUC m 7 Output Configuration RoHS L Unipolar compliant Low Voltage J Suffix Reversed Pin Vertical Mount Non lsolated SIP Nominal Output Voltage 1 1 1 1 2 1 3 1 5 1 8 2 2 5 3 3 or 5 Volts H Suffix Horizontal Mount Maximum Rated Output Current in Amps B Suffix No Remote Sense Pin 3 removed Note Not all model number combinations are available Contact C amp D Technologies DATEL Input Voltage Range D12 10 8 to 13 2 Volts 12V nominal RoHS compliance C suffix Selected models use materials which are compatible with the Reduction of Hazardous Substances RoHS directive Contact C amp D Technologies DATEL for availability GED TECHNOLOGIES C amp D Technologies Inc 11 Cabot Boulevard Mansfield MA 02048 1151 U S A Tel 508 339 3000 800 233 27
6. 10A DC DC s in SIP Packages Performance Functional Specifications Typical Ta 25 C under nominal line voltage and full load conditions unless noted Input Voltage Range 10 8 13 2 Volts 12V nominal Input Current Normal Operating Conditions See Ordering Guide Inrush Transient 0 08A sec Standby Off Mode 8mA Output Short Circuit Condition 40mA average Input Reflected Ripple Current 100mAp p Input Filter Type Capacitive 66uF Overvoltage Protection None Reverse Polarity Protection None Undervoltage Shutdown None On Off Control On open internal pull down Off 2 8V to VIN lt 3mA 1 25 maximum No load Maximum Capacitive Load 2000uF low ESR OSCON Vout Trim Range 10 Vout Accuracy 50 load Minimum Loading Ripple Noise 20MHz BW See Ordering Guide Total Accuracy 3 over line load temperature Efficiency See Ordering Guide Overcurrent Detection and Short Circuit Protection Current Limiting Detection Point 17 13 23 5 Amps Short Circuit Detection Point 98 of VOUT set SC Protection Technique Hiccup with auto recovery Short Circuit Current 400mA average Dynamic Characteristics Transient Response 50 load step 100usec to 2 of final value Start Up Time Vin to Vout and On Off to Vout 70msec for Vout 1V 16msec for Vout 1 1V to 5V Switching Frequency 1V 1 1V 1 2V 1 3 Models 105 125kHz 10 1 5V 1 8V 2V Models 160
7. 12 GED TECHNOLOGIES LSN 10A D12 Models SE eh Single Output Non Isolated 12Vin 1 5Vout 10A DC DC s in SIP Packages Typical Performance Curves for LSN D12 SIP Series LSN 2 10 D12 LSN 2 10 D12 Efficiency vs Line Voltage and Load Current Output Current vs Ambient Temperature 93 Vertical mount air flow direction from pin 11 to pin 1 12 91 10 A Natural Convection z 87 lt 8 85 5 100 Ifm gt 5 6 2 2o 83 2 200 lfm E Vin 10 8V 3 4 W O 81 Vin 12V 79 Vin 13 2V 7 7 0 40 0 50 60 70 80 90 100 110 75 Ambient Temperature C 1 2 3 4 5 6 7 8 9 10 Load Current Amps LSN 2 5 10 D12 LSN 2 5 10 D12 Efficiency vs Line Voltage and Load Current Output Current vs Ambient Temperature 94 Vertical mount air flow direction from pin 11 to pin 1 12 92 90 10 A Natural Convection 88 8 86 5 100 Ifm gt 5 6 e 84 5 Vin 10 8V 2 paea 82 6 4 u Vin 12V 80 Vin 13 2V 3 78 0 76 40 0 50 60 70 80 90 100 110 74 Ambient Temperature C 1 2 3 4 5 6 7 8 9 10 Load Current Amps LSN 3 3 10 D12 LSN 3 3 10 D12 Efficiency vs Line Voltage and Load Current Output Current vs Ambient Temperature 95 Vertical mount air flow direction from pin 11 to pin 1 93 91 2 Natu
8. 177kHz 10 2 0V 3 3V 5V Models 200kHz 7 5 Environmental Calculated MTBF 2 3 1 8 million hours 1Vout to 5Vour Operating Temperature Ambient Without Derating Natural convection 40 to 48 64 C model dependent With Derating See Derating Curves Thermal Shutdown 115 C Physical Dimensions See Mechanical Specifications Pin Dimensions Material 0 03 0 76mm round copper alloy with tin plate over nickel underplate Weight Flamability Rating 0 3 ounces 8 59 UL94V 0 UL cUL IEC EN 60950 CSA C22 2 No 234 Safety All models are tested specified with external 22uF input output capacitors These caps accommodate our test equipment and may not be required to achieve specified performance in your applications All models are stable and regulate within spec under no load conditions See Technical Notes and Performance Curves for details The On Off Control pin 11 is designed to be driven with open collector logic or the appli cation of appropriate voltages referenced to Common pins 5 and 6 Output noise may be further reduced with the installation of additional external output filtering See I O Filtering and Noise Reduction MTBP s are calculated using Telcordia SR 332 Bellcore ground fixed Ta 25 C full power natural convection 67 C pcb temperature www cd4power com Absolute Maximum Ratings Input Voltage Continuous or transient 15 Volts On Off Cont
9. 30 to 50mVp p typ tight line load regulation 0 1 0 25 max quick step response 100usec stable no load operation and no output reverse conduction The fully functional LSN s feature output overcurrent detection continuous Sense pin on standard models short circuit protection an output voltage trim function a remote on off control pin Thermal shutdown pull high to disable thermal shutdown and a sense pin High efficiency enables No derating to 68 C with 100 Ifm me AIE S ateo output currents of 10 Amps at ambient temperatures o 68 C wi m air flow ULIEC EN60950 certified If your new system boards call for three or more supply voltages check out the EMC compliant economics of on board 12V distributed power If you don t need to pay for multiple isolation barriers DATEL s non isolated LSN D12 SIP s will save you money Non isolated fixed frequency synchronous rectifier topology e Trimmable output voltage Remote on off control OQUTPUT 1 2 4 SENSE 3 COMMON COMMON 6 5 wee PWM ON OFF CONTROL CONTROLLER REFERENCE amp 11 ERROR AMP For devices with the sense pin removed B suffix the feedback path is through the Output pin and not ae the Sense pin Figure 1 Simplified Schematic Typical topology is shown DDOATEL DC DC CONVERTERS www cd4power com MDC_LSN 10A D12_A02 Page 1 of 12 GED TECHNOLOGIES LSN 10A D12 Models a Single Output Non lsolated 12Vin 1 5Vout 10
10. 65 Fax 508 339 6356 www cd4power com email sales cdtechno com ISO 9001 REGISTERED DS 0514E 08 07 2006 C amp D Technologies Inc C amp D Technologies Inc makes no representation that the use of its products in the circuits described herein or the use of other technical information contained herein will not infringe upon existing or future patent rights The descriptions contained herein do not imply the granting of licenses to make use or sell equipment constructed in accordance therewith Specifications are subject to change without notice www cd4power com Functional Options Remote Sense Pin Removed B suffix These devices have their Sense pin pin 3 removed and the feedback loop is closed through the Vourt path The 10 5Q resistor in Figure 1 is installed in both standard and B models See the Output Sense Function Horizontal Mounting H suffix This packaging configuration reduces above board height to 0 35 8 89mm including the isolating pad For H models a thermally conductive electri cally insulating pad is factory installed on the output inductor The pad material is Bergquist Sil Pad 400 The pad size is 0 4 x 0 5 x 0 009 inches 10 16 x 12 7 x 0 23mm This configuration can significantly improve thermal performance See Thermal Derating for details Reversed pin vertical mounting J suffix This additional mechanical configuration consists of a low profile pin header attached to the re
11. A DC DC s in SIP Packages Performance Specifications and Ordering Guide Output Input Efficiency Package R N mVp p Regulation Max Vin Nom Range MO Full Load 2 Load Case Root Model Typ Max Line Load Volts Volts mA A Min Typ Typ Pinout LSN 1 10 D12 1 10 45 65 0 1 0 25 12 10 8 13 2 39 1 02 83 86 86 B5 B5x P59 LSN 1 1 10 D12 1 1 10 45 60 0 1 0 25 12 10 8 13 2 45 1 1 85 88 87 5 B5 B5x P59 LSN 1 2 10 D12 12 10 45 60 0 1 0 25 12 10 8 13 2 45 1 19 85 88 87 5 B5 B5x P59 LSN 1 3 10 D12 1 3 10 45 60 0 1 0 25 12 10 8 13 2 45 1 3 85 88 87 5 B5 B5x P59 LSN 1 5 10 D12 1 5 10 30 45 0 1 0 25 12 10 8 13 2 54 1 47 86 89 88 B5 B5x P59 LSN 1 8 10 D12 1 8 10 30 45 0 1 0 25 12 10 8 13 2 53 1 75 87 90 5 89 5 B5 B5x P59 LSN 2 10 D12 2 10 30 45 0 1 0 25 12 10 8 13 2 59 1 9 88 5 91 90 B5 B5x P59 LSN 2 5 10 D12 2 5 10 35 50 0 1 0 25 12 10 8 13 2 60 2 3 90 5 92 5 92 B5 B5x P59 LSN 3 3 10 D12 3 3 10 40 55 0 1 0 25 12 10 8 13 2 69 3 92 5 94 93 5 B5 B5x P59 LSN 3 8 10 D12 3 8 10 40 55 0 1 0 25 12 10 8 13 2 69 3 33 93 95 N A B5 B5x P59 LSN 5 10 D12 5 10 50 75 0 1 0 25 12 10 8 13 2 75 4 5 94 96 95 5 B5 B5x P59 Typical at Ta 25 C under nominal line voltage and full load conditions unless noted All These devices have no minimum load requirements and will regulate under no load c
12. Natural Convection 40 0 40 50 60 70 80 90 100 Ambient Temperature C Input Reflected Ripple Current VIN 12V VouT 5V 10A CIN CouT 22uF 2usec div D ODATEL DC DC CONVERTERS MDC_LSN 10A D12_A02 Page 9 of 12 GE TECHNOLOGIES LSN 10A D12 Models CICNE Single Output Non lsolated 12Vin 1 5Vout 10A DC DC s in SIP Packages Typical Performance Curves for LSN D12 SIP Series Power Up From VIN Power Up From VIN VIN 12V VouT 5V 10A CIN 22pF CouT 2000F OSCON VIN 12V Vout 5V 10A CIN 22pF Output Filter 22UF 700nH 150uF Channel 2 5V div Channel 2 5V div Channel 1 2V div Channel 1 2V div 4msec div 4msec div Output Ripple Noise Output Ripple Noise VIN 12V VouT 5V Full Load CouT 22uF VIN 12V VouT 5V Full Load CouT 2000F OSCON 2 2 g gt gt E 1yusec div 1usec div Dynamic Load Response Dynamic Load Response VIN 12V VouT 5V 50 to 100 Load Step CIN CouT 22uF VIN 12V VouT 5V 0 100 Load Step CiN 22uF Cout 2000UF OSCON 2 2 g g gt gt O O N F LO 100us div 100us div DDOATEL DC DC CONVERTERS www cd4power com MDC_LSN 10A D12_A02 Page 10 of 12 GED TECHNOLOGIES LSN 10A D12 Models ROWEN ELECTOORTGE DII ION Single Output Non Isolated 12Vin 1 5Vout 10A DC DC s in SIP Packages Typical Performance Curves for LSN D12 SIP Series Short Circuit Output Current 10A div
13. ch model of the LSN D12 SIP s under known ambient temperature and air flow conditions Similarly the curves indicate how much air flow is required to reliably deliver a specific output current at known temperatures The highest temperatures in LSN D12 SIP s occur at their output inductor whose heat is generated primarily by I R losses The derating curves were developed using thermocouples to monitor the inductor temperature and varying the load to keep that temperature below 110 C under the assorted conditions of air flow and air temperature Once the temperature exceeds 115 C approx the thermal protection will disable the converter Automatic restart occurs after the temperature has dropped below 110 C All but the last two DUT s were vertical mount models and the direction of air flow was parallel to the unit in the direction from pin 11 to pin 1 As you may deduce from the derating curves and observe in the efficiency curves on the following pages LSN D12 SIP s maintain virtually constant efficiency from half to full load and consequently deliver very impressive temperature performance even if operating at full load Lastly when LSN D12 SIP s are installed in system boards they are obvi ously subject to numerous factors and tolerances not taken into account here If you are attempting to extract the most current out of these units under demanding temperature conditions we advise you to monitor the output inductor temperat
14. ded input path to the converter As a rule of thumb however we recommend to use a normal blow or slow blow fuse with a typical value of about twice the maximum input current calculated at low line with the converters minimum efficiency Safety Considerations LSN D12 SIP s are non isolated DC DC converters In general all DC DC s must be installed including considerations for I O voltages and spacing separation requirements in compliance with relevant safety agency speci fications usually UL IEC EN60950 In particular for a non isolated converter s output voltage to meet SELV safety extra low voltage requirements its input must be SELV compliant If the output needs to be ELV extra low voltage the input must be ELV Input Overvoltage and Reverse Polarity Protection LSN D12 SIP Series DC DC s do not incorporate either input overvoltage or input reverse polarity protection Input voltages in excess of the specified absolute maximum ratings and input polarity reversals of longer than instan taneous duration can cause permanent damage to these devices Start Up Time The Vin to Vout Start Up Time is the interval between the time at which a ramping input voltage crosses the lower limit of the specified input voltage range 10 8 Volts and the fully loaded output voltage enters and remains within its specified accuracy band Actual measured times will vary with input source impedance external input capacitance and the slew
15. ill invariably cause internal component temperatures to exceed their maximum ratings and eventually lead to component failure High current carrying components such as inductors FET s and diodes are at the highest risk LSN D12 SIP Series DC DC converters incorporate an output overcur rent detection and shutdown function that serves to protect both the power converter and its load If the output current exceeds it maximum rating by typically 70 17 Amps or if the output voltage drops to less than 98 of it original value the LSN D12 s internal overcurrent detection circuitry immediately turns off the converter which then goes into a hiccup mode While hiccupping the converter will continuously attempt to restart itself go into overcurrent and then shut down Under these conditions the average output current will be approximately 400mA and the average input current will be approximately 40mA Once the Output short is removed the converter will automatically restart itself Output Voltage Trimming Allowable trim ranges for each model in the LSN D12 SIP Series are 10 Trimming is accomplished with either a trimpot or a single fixed resistor The trimpot should be connected between Output and Common with its wiper connected to the Trim pin as shown in Figure 3 below A trimpot can be used to determine the value of a single fixed resistor which can then be connected as shown in Figure 4 between the Trim pin and Output to trim down
16. ltage when deactivated INPUT ON OFF CONTROL COMMON Figure 2 Driving the On Off Control Pin with an Open Collector Drive Circuit D ODATEL DC DC CONVERTERS MDC_LSN 10A D12_A02 Page 4 of 12 GED TECHNOLOGIES LSN 10A D12 Models POWER ELECTRONICS DIVISION The on off control function however can be externally inverted so that the converter will be disabled while the input voltage is ramping up and then released once the input has stabilized For a controlled start up of one or more LSN D12 s or if several output voltages need to be powered up in a given sequence the On Off Control pin can be pulled high external pull up resistor converter disabled and then driven low with an external open collector device to enable the converter INPUT ON OFF CONTROL COMMON Figure 2a Inverting On Off Control Pin Signal and Power Up Sequencing Output Overvoltage Protection LSN D12 SIP Series DC DC converters do not incorporate output overvolt age protection In the extremely rare situation in which the device s feedback loop is broken the output voltage may run to excessively high levels Vout Vin If it is absolutely imperative that you protect your load against any and all possible overvoltage situations voltage limiting circuitry must be provided external to the power converter Output Overcurrent Detection Overloading the output of a power converter for an extended period of time w
17. ompensating for voltage drops between the Output and Sense pins that do not exceed 10 of Vout Vout Common Sense Common lt 10 Vout Power derating output current limiting is based upon maximum output cur rent and voltage at the converter s output pins Use of trim and sense func tions can cause the output voltage to increase thereby increasing output power beyond the LSN s specified rating Therefore Vout at pins x lout lt rated output power The internal 10 5Q resistor between Sense and Output see Figure 1 serves to protect the sense function by limiting the output current flowing through the sense line if the main output is disconnected It also prevents output voltage runaway if the sense connection is disconnected Note Connect the Sense pin pin 3 to Output pin 4 at the DC DC converter pins if the sense function is not used for remote regulation On Off Control and Power up Sequencing The On Off Control pin may be used for remote on off operation LSN D12 SIP Series DC DC s are designed so they are enabled when the control pin is left open internal pull down to Common and disabled when the control pin is pulled high 2 8V to Vin as shown in Figure 2 and 2a Dynamic control of the on off function is best accomplished with a mechanical relay or open collector open drain drive circuit The drive circuit should be able to sink appropriate current when activated and withstand appropriate vo
18. onditions models are tested and specified with external 22uF tantalum input and output capacitors The Regulation specifications describe the output voltage deviation as the line voltage or load is capacitors are necessary to accommodate our test equipment and may not be required to varied from its nominal midpoint value to either extreme achieve specified performance in your applications See O Filtering and Noise Reduction Nominal line voltage no load full load conditions Ripple Noise R N is tested specified over a 20MHz bandwidth and may be reduced with These are not complete model numbers Please refer to the Part Number Structure when external filtering See I O Filtering and Noise Reduction for details ordering PART NUMBER STF z 0 34 8 64 ha Output _ on Configuration RoHS 6 5 08 L Unipolar compliant Low Voltage J Suffix Non Isolated SIP Reversed Pin en fil Vertical Mount Nominal Output Voltage l 1 1 1 1 2 1 3 1 5 1 8 2 2 5 3 3 H Suffix pa AR ae 0 110 IO or 5 Volts Horizontal Mount 0 762 0 025 1 27 2 79 a Maximum Rated Output B Suffix pes k r e Current in Amps 10 16 12 70 1 17 urrent p No Remote Sense Pin 3 removed SOT G sa TE Input Voltage Range 0 100 2 54 0 100 2 54 Note Not all model number D12 10 8 to 13 2 Volts 12V nominal
19. put voltage D ODATEL DC DC CONVERTERS MDC_LSN 10A D12_A02 Page 5 of 12 GED TECHNOLOGIES LSN 10A D12 Models ROWEN BLECTOORIGE DINI ION Single Output Non Isolated 12Vin 1 5Vout 10A DC DC s in SIP Packages Output Reverse Conduction Many DC DC s using synchronous rectification suffer from Output Reverse Conduction If those devices have a voltage applied across their output before a voltage is applied to their input this typically occurs when another power supply starts before them in a power sequenced application they will either fail to start or self destruct In both cases the cause is the freewheeling or catch FET biasing itself on and effectively becoming a short circuit LSN D12 SIP DC DC converters are not damaged from Output Reverse Conduction They employ proprietary gate drive circuitry which makes them immune to applied voltages during the startup sequence If you are using an external power source paralleled with the LSN be aware that during the start up phase some low impedance condition or transient current may be absorbed briefly into the LSN output terminals before voltage regulation is fully established You should insure that paralleled external power sources are not disrupted by this condition during LSN start up Thermal Considerations and Thermal Protection The typical output current thermal derating curves shown below enable designers to determine how much current they can reliably derive from ea
20. ral Convection 89 7 T 87 5 100 lfm gt 5 Q 85 Z Vin 10 8V 2 83 a a Vin 12V 81 Vin 13 2V 79 T7 40 0 50 60 70 80 90 100 110 75 Ambient Temperature C 1 2 3 4 5 6 7 8 9 10 Load Current Amps D ODATEL DC DC CONVERTERS www cd4power com MDC_LSN 10A D12_A02 Page 8 of 12 GED TECHNOLOGIES LSN 10A D12 Models RS eh Single Output Non Isolated 12Vin 1 5Vout 10A DC DC s in SIP Packages Output Current Amps Efficiency 20A div Typical Performance Curves for LSN D12 SIP Series LSN 5 10 D12 Efficiency vs Line Voltage and Load Current 1 2 3 4 5 6 7 8 9 10 Load Current Amps LSN 1 10 D12H Horizontal Mount Output Current vs Ambient Temperature Air flow direction from pin 11 to pin 1 Natural Convection 100 Ifm 200 lfm 40 0 50 60 70 80 90 100 110 Ambient Temperature C Input Inrush Current VIN 12V 7000pF as Input Switch 10usec div www cd4power com Output Current Amps Output Current Amps 20mA div LSN 5 10 D12 Output Current vs Ambient Temperature Vertical mount air flow direction from pin 11 to pin 1 Natural Convection 100 Ifm 40 0 40 50 60 70 80 90 100 Ambient Temperature C LSN 5 10 D12H Horizontal Mount Output Current vs Ambient Temperature Air flow direction from pin 11 to pin 1
21. rate and final value of the input voltage as it appears to the converter The On Off to Vout Start Up Time assumes the converter is turned off via the On Off Control with the nominal input voltage already applied to the converter The specification defines the interval between the time at which the converter is turned on and the fully loaded output voltage enters and remains within its specified accuracy band See Typical Performance Curves www cd4power com Remote Sense LSN D12 SIP Series DC DC converters offer an output sense function on pin 3 The sense function enables point of use regulation for overcoming moderate IR drops in conductors and or cabling Since these are non isolated devices whose inputs and outputs usually share the same ground plane sense is provided only for the Output The remote sense line is part of the feedback control loop regulating the DC DC converter s output The sense line carries very little current and consequently requires a minimal cross sectional area conductor As such it is not a low impedance point and must be treated with care in layout and cabling Sense lines should be run adjacent to signals preferably ground and in cable and or discrete wiring applications twisted pair or similar tech niques should be used To prevent high frequency voltage differences between Vout and Sense we recommend installation of a 1000pF capacitor close to the converter The sense function is capable of c
22. rol Pin 11 VIN Input Reverse Polarity Protection None Output Overvoltage Protection None Output Current Current limited Devices can withstand sustained output short circuits without damage Storage Temperature 40 to 125 C Lead Temperature soldering 10 sec 300 C These are stress ratings Exposure of devices to any of these conditions may adversely affect long term reliability Proper operation under conditions other than those listed in the Performance Functional Specifications Table is not implied TECHNICAL NOTES Return Current Paths The LSN D12 SIP s are non isolated DC DC converters Their two Common pins pins 5 and 6 are connected to each other internally see Figure 1 To the extent possible with the intent of minimizing ground loops input return current should be directed through pin 6 also referred to as Input or Input Return and output return current should be directed through pin 5 also referred to as Output or Output Return Any on off control signals applied to pin 11 On Off Control should be referenced to Common specifically pin 6 I O Filtering and Noise Reduction All models in the LSN D12 Series are tested and specified with external 22uF tantalum input and output capacitors These capacitors are necessary to accommodate our test equipment and may not be required to achieve desired performance in your application The LSN D12 s are designed with high quality high performance in
23. s Output capacitors function as true filter D DATEL DC DC CONVERTERS MDC_LSN 10A D12_A02 Page 3 of 12 GED TECHNOLOGIES LSN 10A D12 Models POWER ELECTOORIGe DIVI ION Single Output Non Isolated 12Vin 1 5Vout 10A DC DC s in SIP Packages elements and should be selected for bulk capacitance low ESR and appro priate frequency response Any scope measurements of PARD should be made directly at the DC DC output pins with scope probe ground less than 0 5 in length All external capacitors should have appropriate voltage ratings and be located as Close to the converters as possible Temperature variations for all relevant parameters should be taken into consideration The most effective combination of external I O capacitors will be a function of your line voltage and source impedance as well as your particular load and layout conditions Our Applications Engineers can recommend potential solu tions and discuss the possibility of our modifying a given device s internal filter ing to meet your specific requirements Contact our Applications Engineering Group for additional details Input Fusing Most applications and or safety agencies require the installation of fuses at the inputs of power conversion components LSN D12 Series DC DC converters are not internally fused Therefore if input fusing is mandatory either a normal blow or a slow blow fuse with a value no greater than 9 Amps should be installed within the ungroun
24. ternal O caps and will operate within spec in most applications with no additional external components In particular the LSN D12 s input capacitors are specified for low ESR and are fully rated to handle the units input ripple currents Similarly the internal output capacitors are specified for low ESR and full range frequency response As shown in the Performance Curves removal of the external 22uF tantalum output caps has minimal effect on output noise In critical applications input output ripple noise may be further reduced using filtering techniques the simplest being the installation of external I O caps External input capacitors serve primarily as energy storage devices They minimize high frequency variations in input voltage usually caused by IR drops in conductors leading to the DC DC as the switching converter draws pulses of current Input capacitors should be selected for bulk capacitance at appropriate frequencies low ESR and high rms ripple current ratings The switching nature of modern DC DC s requires that the dc input voltage source have low ac impedance at the frequencies of interest Highly inductive source impedances can greatly affect system stability Your specific system configuration may necessitate additional considerations Output ripple noise also referred to as periodic and random deviations or PARD may be reduced below specified limits with the installation of additional external output capacitor
25. the output voltage or between the Trim pin and Common to trim up the output voltage Fixed resistors should have absolute TCR s less than 100ppm C to ensure stability www cd4power com Single Output Non lsolated 12Vin 1 5Vout 10A DC DC s in SIP Packages The equations below can be used as starting points for selecting specific trim resistor values Recall untrimmed devices are guaranteed to be 1 accurate Adjustment beyond the specified 10 adjustment range is not recommended OUTPUT INPUT COMMON COMMON Figure 3 Trim Connections Using a Trimpot OUTPUT Note Install either a fixed trim up resistor or a fixed trim down resistor depending upon desired output voltage INPUT COMMON COMMON Figure 4 Trim Connections Using Fixed Resistors Trim Equations 1 82 Vo 0 8 RT own kQ l x 1 46 RTo KQ A LSN 1 10 D12 X 0 909 LSN 1 1 10 D12 X 2 49 LSN 1 2 10 D12 X 3 09 LSN 1 3 10 D12 X 4 12 4 64 Vo 0 8 RTpown kQ X a2 Rtyp kQ X LSN 1 5 10 D12 X 13 3 LSN 1 8 10 D12 X 16 9 LSN 2 10 D12 X 15 4 7 5 Vo 0 8 RTpown kQ a V V X Onom VO 6 P E NOM LSN 2 5 10 D12 X 20 LSN 3 3 10 D12 X 15 LSN 5 10 D12 X 10 Note Resistor values are in kQ Accuracy of adjustment is subject to tolerances of resistors and factory adjusted initial output accuracy Vo desired output voltage Vo nominal out
26. ure to ensure it remains below 110 C at all times Thermal Performance for H Models Enhanced thermal performance can be achieved when LSN D12 SIP s are mounted horizontally H models and the output inductor with its electrically isolating thermally conductive pad installed is thermally coupled to a copper plane pad at least 0 55 square inches in area on the system board Your conditions may vary however our tests indicate this configuration delivers a 16 C to 22 C improvement in ambient operating temperatures See page 9 for thermal comparison of two horizontally mounted units Typical Performance Curves for LSN D12 SIP Series LSN 1 10 D12 Efficiency vs Line Voltage and Load Current Vn 10 8V Efficiency VIN 12V Vn 13 2V 1 2 3 4 5 6 7 8 9 10 Load Current Amps www cd4power com LSN 1 10 D12 Output Current vs Ambient Temperature Vertical mount air flow direction from pin 11 to pin 1 Natural Convecti 100 Ifm Output Current Amps 40 0 60 70 80 90 100 110 Ambient Temperature C D ODATEL DC DC CONVERTERS MDC_LSN 10A D12_A02 Page 6 of 12 GED TECHNOLOGIES LSN 10A D12 Models SEA Bh Soat dta de tei Single Output Non Isolated 12Vin 1 5Vour 10A DC DC s in SIP Packages Typical Performance Curves for LSN D12 SIP Series
27. verse side of the converter It allows the LSN series to be mechanically compatible with competitors keep out area Other Options and Modifications Other options include a positive polarity pull low to disable on the On Off Control Contact DATEL directly to discuss these and other possible modifi cations Examples LSN 1 8 10 D12 Vertical mount Sense function on pin 3 No pin 9 LSN 1 8 10 D12B Vertical mount Pin 3 Sense removed No pin 9 LSN 1 8 10 D12H Horizontal mount Sense function on pin 3 No pin 9 LSN 1 8 10 D12BH Horizontal mount Pin 3 Sense removed No pin 9 LSN 1 8 10 D12J Reverse pin vertical mount Sense function on pin 3 No pin 9 USA Tucson Az Tel 800 547 2537 email sales cdtechno com Canada Toronto Tel 866 740 1232 email toronto cdtechno com United Kingdom Milton Keynes Tel 44 0 1908 615232 email mk cdtechno com France Montigny Le Bretonneux Tel 33 0 1 34 60 01 01 email france cdtechno com Germany Munchen Tel 49 0 89 544334 0 email ped munich cdtechno com Japan Tokyo Tel 3 3779 1031 email sales_tokyo cdtechno com Osaka Tel 6 6354 2025 email sales_osaka cdtechno com Website www cd4power jp China Shanghai Tel 86 215 027 3678 email shanghai cdtechno com Guangzhou Tel 86 208 221 8066 email guangzhou cdtechno com D DATEL DC DC CONVERTERS MDC_LSN 10A D12_A02 Page 12 of 12
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MURATA POWER SOLUTIONS Single Output LSN 10A D12 Models Features Non Isolated 12VIN 1 5VOUT 10 Amp D