Delta Electronics 0.59V~5.1Vout User's Manual
Contents
1. Delphi NE Series Non Isolated Point of Load DC DC Modules 4 5V 13 8Vin 0 59V 5 1Vout 20A The Delphi NE 20A Series 4 5 to 13 8V wide input wide trim single output non isolated point of load DC DC converters are the latest offering from a world leader in power systems technology and manufacturing Delta Electronics Inc The ND NE product family is the second generation non isolated point of load DC DC power modules for the datacom applications which cut the module size by almost 50 in most of the cases compared to the first generation NC series POL modules The product family here provides 20A of output current in a vertically or horizontally mounted through hole package and the output can be resistor trimmed from 0 59Vdc to 5 1Vdc It provides a very cost effective high efficiency and high density point of load solution With creative design technology and optimization of component placement these converters possess outstanding electrical and thermal performance as well as extremely high reliability under highly stressful operating conditions PRELIMINARY DATASHEET DS_NE12520A_072722007 4 FEATURES High Efficiency 94 0 12Vin 5V 20A out Size Vertical 30 5x15 5x12 0mm 1 20 x0 61 x0 47 Horizontal 30 5x15 5x12 9mm 1 20 x0 619X0 515 Wide input range 4 5V 13 8V Output voltage programmable from 0 59Vdc to 5 1Vdc via external resistors Voltage and resistor based trim No minimum load require2. 5 32928mU P P C4 16 2500mU Figure 12 Output ripple amp noise at 12Vin 5 0V 20A out Ka ELECTRICAL CHARACTERISTICS CURVES CON pook Normal i pok Normal T DE ZnsAiw T CDs 2MsAliv n CH1 10 1 Tr CH1 10 1 10 0 Udi 10 0 Udi DC ZOMHz NENA DC ZOMHz CHZ 1 1 CHZ 1 1 0 500 U diu 2 00 U diu DC zoMHz DC 2oMHz O Edge CH2 F 0 Edge CH2 F Normal Normal 0 135 U 0 14 U Figure 13 Turn on delay time at 12Vin 0 59V 20A out Figure 14 Turn on delay time Remote On Off 2 5V 20A out Ch1 Vin Ch4 Vout Ch1 Enable Ch4 Vout pok Normal T ZOMS s EmsAliv EEAS Normal z CH1 18 1 nm cBMS x ensi 16 0 Urdiv DC Z MHz CHZ 1 1 2 00 U diu DC ZOMHz 0 Edge CH2 f 0 Edge CH2 4 Nornal POrnar MEM ZZ LL LODLL9 JM Gage E eee Se oda nen EE Doni 1 25 U Figure 15 Turn on delay time at 12Vin 3 3V 20A out Figure 16 Turn on delay time at Remote On Off 5 0V 20A out Ch1 Vin Ch4 Vout Ch1 Enable Ch4 Vout 2222 Normal 166H5 5 InsAliv CH4 1 1 6 166 U diu AC 0MHzZ Edge CH4 F 212 U Max C4 237 500nV Min C4 233 333mU Figure 17 Typical transient response to step load change at 5A uS from 75 100 load at 12Vin 2 5V out Preliminary DS NE12820A 07272007 a DESIGN CONSIDERATIONS The NE12SOA0V H 20 uses a single phase and voltage mode controlled buck topology The output can be
3. trimmed in the range of 0 59Vdc to 5 1Vdc by a resistor from Trim pin to Ground The converter can be turned ON OFF by remote control with positive on off ENABLE pin logic The converter DC output is disabled when the signal is driven low below 0 3V This pin is also used as the input turn on threshold judgment Its voltage is percent of Input voltage during floating due to internal connection So we do not suggest using an active high signal higher than 0 8V to turn on the module because this high level voltage will disable UVLO function The module will turn on when this pin is floating and the input voltage is higher than the threshold The converter can protect itself by entering hiccup mode against over current and short circuit condition Also the converter will shut down when an over voltage protection is detected Safety Considerations It is recommended that the user to provide a very fast acting type fuse in the input line for safety The output voltage set point and the output current in the application could define the amperage rating of the fuse Preliminary DS NE12S20A 07272007 FEATURES DESCRIPTIONS Enable On Off The ENABLE on off input allows external circuitry to put the NE converter into a low power dissipation sleep mode Positive ENABLE is available as standard With the active high function the output is guaranteed to turn on if the ENABLE pin is driven above 0 8V The output will turn off if the
4. ENABLE pin voltage is pulled below 0 3V The ENABLE pin is also used as input UVLO function Leaving the Enable floating the module will turn on if the input voltage is higher than turn on threshold and turn off if the input voltage is lower than turn off threshold The default Turn on voltage is 4 3V with 1V Hysteresis The Turn on voltage may be adjusted with a resistor placed between the Enable pin and Ground pin The formula for calculating the value of this resistor is 50x R 18 2 pie eS e 182xR VEN FTH VEN wem Enable Fig 18 Enable POR circuit Van rry is the falling threshold Ven rry is the rising threshold that you want R Kohm is the outen resistor that you connect from Enable pin to the GND Also you will see an active high voltage will disable the input UVLO function ke Y FEATURES DESCRIPTIONS CON The ENABLE input can be driven in a variety of ways as shown in Figures 19 and 20 If the ENABLE signal comes from the primary side of the circuit the ENABLE can be driven through either a bipolar signal transistor Figure 18 If the enable signal comes from the secondary side then an opto coupler or other isolation devices must be used to bring the signal across the voltage isolation please see Figure 19 NE20A Vout Vin Enable Trim Vout Trim Figure 20 Enable input drive circuit example with isolation Input Under Voltage Lockout The inpu
5. of the unit may be affected FACING PWB PWB MODULE AIR VELOCITY AND AMBIENT TEMPERATURE MEASURED BELOW j THE MODULE E 50 8 2 0 Note Wind tunnel test setup figure dimensions are in millimeters and Inches Figure 24 Wind tunnel test setup Preliminary DS NE12S20A 07272007 THERMAL CURVES NE1250A0V20 ud CIE RH ET Figure 25 Temperature measurement location The allowed maximum hot spot temperature is defined at 130 C NE12S0A0V20 standard Output Current vs Ambient Temperature and Air Velocity Output Current A Vin 12V Vout 5 0V Through PWB Orientation LP LL a zc comem fa 2001 FM ATX 300LFM 400LFM 500LFM 600LFM 25 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature C Figure 26 Output current vs ambient temperature and air velocity Vin 12V Vout 5 0V Through PWB Orientation NE12S0A0V20 standard Output Current vs Ambient Temperature and Air Velocity Output Current A Vin 12V Vout 2 5V Through PWB Orientation d Convection 14 100LFM Zoo FM ENT OOL EM 12 QE 400LFM m 500LFM 8 H 600LFM 6 4 2 0 El 4 4 po p ja 4 4 43 E Yd 4 ij SS Xy sia t 4 4 x a 25 30 35 40 45 50 55 6
6. or patent rights of Delta Delta reserves the right to revise these specifications at any time without notice Preliminary DS_NE12520A_07272007 a
7. 0 65 70 75 80 85 Ambient Temperature Figure 27 Output current vs ambient temperature and air velocity Vin 12V Vout 2 5V Through PWB Orientation THERMAL CURVES NE1250A0V20 NE1250A0V20 standard Output Current vs Ambient Temperature and Air Velocity Output Current A Vin 5 0V Vout 2 5V Through PWB Orientation Natural Convection 500LFM 25 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature Figure 28 Outout current vs ambient temperature and air velocity Vin 5 0V Vout 2 5V Through PWB Orientation NE1250A0V20 standard Output Current vs Ambient Temperature and Air Velocity Output Current A Vin 12V Vout 0 9V Through PWB Orientation 16 Natural Convection 25 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature Figure 29 Output current vs ambient temperature and air velocity Vin 12V Vout 0 9V Through PWB Orientation NE12S0A0V20 standard Output Current vs Ambient Temperature and Air Velocity Output Current A Vin 5 0V Vout 0 9V Through PWB Orientation Natural Convection 300LFM 400LFM 25 30 35 40 45 50 55 60 65 70 15 80 85 Ambient Temperature CC Figure 30 Output current vs ambient temperature and air velocity Vin 5 0V Vout 0 9V Through PW
8. B Orientation Preliminary DS NE12S20A 07272007 H m MECHANICAL DRAWING 12 9 0 517 4 30 5 1 20 _ 12 0 0 47 30 5 1 20 MAX CUSTOMER MAX 1 65 0 065 0 30 0 012 BOARD 10 MIN a o 9 e SE D D EL E Is Ini SE M L2 Og fi R frefi fr f d f Oo o o 0 0 o gla T E z E l i io 3 8 0 15 7 6 5 0 26 R ol e 2 5 0 10 no er 2 5 0 10 ae H 1 27 0 050 N E paa CUE sQ0 64 0 025 E R PIN ASSIGNMENT 12 70 0 500 8x 12 70 0 500 m PINE FUNCTION IE DN ASSIGNMENT 8 PM Vout 24 15 0 950 PINE FUNCTION 24 5 0 950 E Vout 27 05 1 065 4 ao Z Trim 5 Enable j Ground 5 Vin E E 7 Remote Sense 5 8 Remote Sense TOR sies nse 9 Mech Support u Remo Senes 10 Mech Support OTES IMENSIONS ARE IN MILLIM gS AN
9. D INCHS FOLERANCE XX mm 0 5 mm X XX in 0 02 in XXX mm t0 25 mm X XXX in 0 010 in Preliminary DS_NE12S20A_07272007 E YE PART NUMBERING SYSTEM 00 V 2 P N F A Product Oui voles Output ON OFF Pin Option Series P 9 Current Logic Length Code OAO programmable V Vertical 20 20A P Positive N 0 150 F RoHS 6 6 A standard Non isolated H Horizontal N Negative Lead Free Series MODEL LIST i Efficiency Model Name Packaging Input Voltage Output Voltage Output Current 12Vin 100 load KE NE12S0A0H20PNFA Horizontal 4 5V 13 8Vdc 0 59V 5 1Vdc 94 0 5Vout CONTACT www delta com tw dcdc USA Europe Asia amp the rest of world Telephone Telephone 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 tw 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 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
10. RA Output Voltage Adjustment Range 0 59 21 V Output Voltage Set Point With a 0 196 trim resistor 1 1 VO Output Voltage Regulation Over Load lo lo_min to lo_max 0 5 05 YVo Over Line Vin Vin min to Vin max 0 2 T0 2 Y Vo Total output range Over load line temperature regulation and set point 2 0 2 0 Y VO Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth Peak to Peak Full Load 10uF Tan cap 12Vin 5Vo 20 mV RMS Full Load 10uF Tan cap 12Vin 5Vo 5 mV Output Current Range 0 20 A Output Voltage Under shoot at Power Off Vin 12V Turn OFF 100 mV Output short circuit current RMS value Continuous 3 6 A Output DC Current Limit Inception Hiccup mode 110 200 lomax Output Dynamic Load Response 12Vin 2 5Vout 10pF ceramic cap Positive Step Change in Output Current 75 100 load 5A uS 200 mV Negative Step Change in Output Current 100 75 load 5A uS 200 mV Settling Time Settling to be within regulation band to 10 Vo deviation 100 us Turn On Transient Start Up Time from On Off Control From Enable high to 90 of Vo 2 3 ms Start Up Time from input power From Vin 12V to 90 of Vo 2 3 ms Minimum Output Capacitance 0 uF 5 0Vo Maximum Output Capacitance Turn on overshoot lt 1 vo ESRZ 1mO 2000 UF Vo 0 59V Vin 12V lo 20A 75 Vo 0 9V Vin 12V lo 20A 80 5 Vo 2 5V Vin 12V lo 20A 91 Vo 5 0V Vin 12V lo 20A 94 SINK EFFICIENCY Vo 5 0V Vin 12V lo 20A 92 Switching Frequency Fixed 500 KHz ON OFF Control Positive logic internal
11. d Fixed frequency operation Input UVLO output OCP Remote ON OFF Positive ISO 9001 TL 9000 ISO 14001 QS9000 OHSAS18001 certified manufacturing facility UL cUL 60950 US amp Canada TUV EN60950 pending OPTIONS Vertical or horizontal versions APPLICATIONS DataCom Distributed power architectures Servers and workstations LAN WAN applications Data processing applications A MELTA Delta Electronics Inc Eh 7 TECHNICAL SPECIFICATIONS Ambient Temperature 25 C minimum airflow 200LFM nominal V n 12Vdc unless otherwise specified PARA x J ano ONL 0 VAU i Min Typ Max Units ARSO A R A Input Voltage operation 4 5 13 8 Vdc Operating Temperature Vertical Refer to Fig 25 for the measuring point 0 130 C Operating Temperature Horizontal Refer to Fig 25 for the measuring point 0 TBD C Storage Temperature 55 125 C Operating Input Voltage 4 5 13 8 V Input Under Voltage Lockout Turn On Voltage Threshold 4 3 V Turn Off Voltage Threshold 3 3 V Lockout Hysteresis Voltage 1 0 V Maximum Input Current 12Vin 5Vo operating full load 8 9 A No Load Input Current Vin 12V Vout 5V 150 mA Off Converter Input Current Remote OFF 10 mA Input Reflected Ripple Current P P thru 2uH inductor 5Hz to 20MHz 30 mA Input Ripple Rejection 120Hz 60 dB OUTP A
12. fficiency NON o Oo O O o OC al al 1 2 4 6 8 10 12 14 16 18 20 Output current A Figure 6 Converter efficiency vs output current 5 0V output voltage 12V input 2k Normal 200MS 1us div CH4 1 1 10 0mU diuv AC 20MHz Edge CH4 F Auto 1 8mU P P C4 3 75000mU Rms 04 679 010uUU Figure 7 Output ripple amp noise at 12Vin 0 59V 20A out zk Normal I 200MS s 1us div CH4 1 1 10 0mU diuw S AC 20MHz Edge CH4 F Auto 1 8mU P P C4 6 25000nU Rms C4 1 62403nU Figure 9 Output ripple amp noise at 12Vin 1 5V 20A out 0 12k Normal 7 200MS 1us div egene A SEO care 10 0mU diuv ac ZOMHZ Edge CH4 F Auto 1 8mU P P C4 11 2500mU Rms C4 3 30939mU Figure 11 Output ripple amp noise at 12Vin 3 3V 20A out Preliminary DS NE12S20A 07272007 ELECTRICAL CHARACTERISTICS CURVES CON 1 Normal 7 200MS 1us div CH4 1 1 10 0mU d iv AC 20MHz Edge CH4 F Auto 1 8mU P P C4 5 00000mU Rms C4 1 30903nmU Figure 8 Output ripple amp noise at 12Vin 0 9V 20A out 2k Normal I 200MS s 1us div CH4 1 1 19 0nU d iv oC 20MHz Edge CH4 F Auto 1 8mU P P C4 8 33333mU Rns C4 2 18600mU Figure 10 Output ripple amp noise at 12Vin 2 5V 20A out 2k Normal T 200MS s 1us div CH4 1 1 10 0mU div ac 20MHz Edge CH4 Auto 1 8nU Rns C4
13. ge ripple noise measurement point Cs 270yF 1 Ltest 2uH Cin 270uF 1 Figure 23 Input reflected ripple capacitor ripple current and output voltage ripple and noise measurement setup for NE20 THERMAL CONSIDERATION 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 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
14. ly pulled high Logic High Module On or leave the pin open 0 8 5 0 V Logic Low Module Off 0 0 3 Calculated MTBF 25 C 300LFM 80 load TBD Mhours Weight 8 8 grams Preliminary DS NE12S20A 07272007 SN ELECTRICAL CHARACTERISTICS CURVES Efficiency 96 N Wu N D gt O 8 10 12 14 16 Output current A 00 N CH Figure 1 Converter efficiency vs output current 0 59V output voltage 12V input Efficiency 0O O O N Co OO O q O Om O Om O Om O A NO IN 6 8 10 12 14 16 18 20 Output current A Figure 3 Converter efficiency vs outout current 1 5V output voltage 12V input Efficiency 0O O O N N O OO O O q 001 OO OO O QC NO I O Output current A Figure 5 Converter efficiency vs output current 3 3V output voltage 12V input Preliminary DS NE12S20A 07272007 8 10 12 14 16 18 20 N O Efficiency N Wu O al O al al NO D gt 6 8 10 12 14 16 18 20 Output current A Figure 2 Converter efficiency vs output current 0 9V output voltage 12V input 00 al 00 N O Efficiency N 2 O O oc OC Wu Wu NO IN O 8 10 12 14 16 18 20 Output current A Figure 4 Converter efficiency vs output current 2 5V output voltage 12V input o o C Oo Wu Oo E
15. resistance between Trim and Ground Rs values should not be less than 2400 asv open 2 5V 619 3 3 V 436 5 0V 268 Table 1 Typical trim resistor values zc FEATURES DESCRIPTIONS CON Voltage Margining Adjustment Output voltage margin adjusting can be implemented in the NE modules by connecting a resistor Rmargin up from the Trim pin to the Ground for margining up the output voltage Also the output voltage can be adjusted lower by connecting a resistor Rmargin down from the Trim pin to the voltage source Vt Figure 22 shows the circuit configuration for output voltage margining adjustment Vt Rmargin down Enable Rmargin up Ground Ground Figure 22 Circuit configuration for output voltage margining Paralleling NE20 converters do not have built in current sharing paralleling ability Hence paralleling of multiple NE20 converter is not recommended Preliminary DS NE12S20A 07272007 Output Capacitance There is internal output capacitor on the NE series modules Hence no external output capacitor is required for stable operation Reflected Ripple Current and Output Ripple and Noise Measurement The measurement set up outlined in Figure 23 has been used for both input reflected terminal ripple current and output voltage ripple and noise measurements on NE series converters Input reflected current measurement point Vin O 1uF 10uF Ceramic Tan Output volta
16. t under voltage lockout prevents the converter from being damaged while operating when the input voltage is too low The lockout occurs between 3 3V to 4 3V Over Current and Short Circuit Protection The NE series modules have non latching over current and short circuit protection circuitry When over current condition occurs the module goes into the non latching hiccup mode When the over current condition is removed the module will resume normal operation An over current condition is detected by measuring the voltage drop across the MOSFETs The voltage drop across the MOSFET is also a function of the MOSFET s Rds on Rds on is affected by temperature therefore ambient temperature will affect the current limit inception point The detection of the Rds on of MOSFETs also acts as an over temperature protection since high temperature will cause the Rds on of the MOSFETs to increase eventually triggering over current protection Preliminary DS NE12S20A 07272007 Output Voltage Programming The output voltage of the NE series is trimmable by connecting an external resistor between the trim pin and output ground as shown Figure 21 and the typical trim resistor values are shown in Table 1 Enable Ground Ground Figure 21 Trimming Output Voltage The NE20 module has a trim range of 0 59V to 5 0V The trim resistor equation for the NE20A is Rs Q 1182 Vout 0 591 Vout is the output voltage setpoint Rs is the
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