Delta Electronics DNT04 User's Manual
Contents
1. DS DNTOASIP3A 09262007 X XXmmzt0 25mm X XXX in X0 010 in 5 6 3 0 25 6 9 0 27 m 3 MAX Y 20 0 80 F 3 0 0 12 2 00 0 079 12 50 0 091 5 S aa c Y e n i c bj GND TRIM VOUT A ky H 0 120 5 E c 0 004 1 VIN FRAU 1 1 R j E E 1 20 0 047 a T zi ces o 1 3 0 05 WY MEE 4 57 0 180 2 54 0 100 7 x 4 06 0 160 15 24 0 600 0 64 0 025 uid aca 17 78 0 700 SQ 4 83 0 190 _ 1 27 0 050 20 32 0 800 SIDE BW BOTTOM HW BAC HW SIDE NW Bl R gt Z 20 6 0 81 i zt KEEP OUT AREA r i i E VOUTITRIN GNO i E 253 PIN FUNCTION loo O M VIN i eae 1 Vout i Bg Ria 1 1 00 04 A 1 45 0 057 MIN _ 12 90 0 114 2 54 0 100 5x 5 TRIM 4 57 0 180 5 S527 Tv 3 GND 5 6 4 6 02. Figure 11 Output ripple amp noise at 5Vin 1 2V 3A out 50mV div Figure 12 Output ripple amp noise at 5Vin 0 75V 3A out 50mV div DS DNTOASIP3A 09262007 X BFainalH r3 3 ELECTRICAL CHARACTERISTICS CURVES CON Figure 13 Turn on delay time at 5Vin 3 3V 3A out Top Vout 2V div Bottom Vin 5V div 2mS div r HnirlLH 7Y t Figure 15 Turn on delay time at 5Vin 1 8V 3A out Top Vout 1 V div Bottom Vin 5V div 2mS div PE amp Hains iH B o Figure 17 Turn on delay time at 5Vin 1 2V 3A out Top Vout 1 V div Bottom Vin 5V div 2mS div DS DNTOASIP3A 09262007 Figure 14 Turn on delay time at 5Vin 2 5V 3A out Top Vout 2V div Bottom Vin 5V div 2mS div TUR Foire iM 23 Figure 16 Turn on delay time at 5Vin 1 5V 3A out Top Vout 1V div Bottom 5V div 2mS div PFluirib 1M 22 m Figure 18 Turn on delay time at 5Vin 0 75 V SA out Top Vout 0 5V div Bottom Vin 5V div 2mS div ed ELECTRICAL CHARACTERISTICS CURVES DES Hainzd k 55 Figure 19 Typical transient response to step load change at 2 5A uS from 100 to 50 of lo max at 5Vin 3 3Vout Cout 1uF ceramic 10uF tantalum 0 1V div Figure 21 Output short circuit current 5Vin 0 75Vout 20A div 10mS div DS DNTOASIP3A 09262007 DES Mainsd k gt gt Figure 20 Typical transient response to step load change at 2 5A LS from 5
3. Delphi DNT04 Non Isolated Point of Load DC DC Power Modules 2 4 5 5Vin 0 75 3 63Vo 3A out The Delphi Series DNT04 2 4 5 5V input 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 DNT04 series provides a programmable output voltage from 0 75V to 3 63V via external resistors This product family is available in surface mount or SIP package and provides up to 3A of output current in an industry standard footprint 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 The DNT04 3A modules have excellent thermal performance and can provide full output current at up to 85 C ambient temperature with no airflow PRELIMINARY DATASHEET DS DNTOASIPO3 09262007 FEATURES High Efficiency 94 5Vin 3 3V 3A out Small size and low profile 0 80 x 0 45 x 0 27 SMD 0 90 x 0 40 x 0 25 SIP Standard footprint and pinout Resistor based trim Output voltage programmable from 0 75V to 3 63V via external resistors Pre bias startup No minimum load required Fixed frequency operation Input UVLO OCP Remote ON OFF ISO 9001 TL 9000 ISO 14001 QS 9000 OHSAS 18001 certified manufacturing facility UL cUL 60950 US amp Canada
4. 21070 Rtrim Factor sio io 15KQ DNT can also be programmed by apply a voltage between the TRIM and GND pins Figure 29 The following equation can be used to determine the value of Vtrim needed for a desired output voltage Vo Vtrim 0 7 0 1698 x Vo 0 7525 For example to program the output voltage of a DNT module to 3 3 Vdc Vtrim is calculated as follows Vtrim 0 7 0 1698 x 3 3 0 7525 0 267V RLoad TRIM Rtrim Figure28 Circuit configuration for programming output voltage using an external resistor zc FEATURE DESCRIPTIONS CON Vtrim RLoad GND C Figure 29 Circuit Configuration for programming output voltage using external voltage source The amount of power delivered by the module is the voltage at the output terminals multiplied by the output current When using the trim feature the output voltage of the module can be increased which at the same output current would increase the power output of the module Care should be taken to ensure that the maximum output power of the module must not exceed the maximum rated power Vo set x lo max s P max Voltage Margining Output voltage margining can be implemented in the DNT modules by connecting a resistor R margin up from the Trim pin to the ground pin for margining up the output voltage and by connecting a resistor Rmargin down from the Trim pin to the o
5. Recognized and TUV EN60950 pending CE mark meets 73 23 EEC and 93 68 EEC pending OPTIONS Positive On Off logic SMD or SIP package APPLICATIONS Telecom DataCom Distributed power architectures Servers and workstations LAN WAN applications Data processing applications A NELTA Delta Electronics Inc ee S TECHNICAL SPECIFICATIONS Ta 25 C airflow rate 300 LFM Vin 2 4Vdc and 5 5Vdc nominal Vout unless otherwise noted PARAMETER NOTES and CONDITIONS DNT04S0AO0RO3NFA Min Typ Max Units A A 12 A Input Voltage Continuous 0 5 8 Vdc Operating Temperature Refer to Figure 32 for measuring point 40 125 C Storage Temperature 55 125 C INPUT CHARACTERISTICS Operating Input Voltage Vo x Vin 0 5V 2 4 2 9 V Input Under Voltage Lockout Turn On Voltage Threshold 2 V Turn Off Voltage Threshold 2 0 V Maximum Input Current Vin 4 5V Vo 3 3V lo lo max 2 9 A No Load Input Current 30 45 mA Off Converter Input Current 1 mA Inrush Transient Vin 2 4V to 5 5V lo lo min to lo max 0 1 aS Recommended Input Fuse TBD OUTPUT CHARACTERISTICS Dynamic Load Response 10uF Tantalum amp 1uF Ceramic load cap 2 5A us Output Voltage Set Point Vin 5V lo lo max 2 0 Vo set 2 0 Vo set Output Voltage Adjustable Range 0 7525 3 63 V Output Voltage Regulation Over Line Vin 2 4V to 5 5V 0 3 Vo set Over Load lo lo min
6. i I gt D i e 2 i at lt 2 r i ed to i C i i i c 1 i 1 E E a i l l c c 1 1 I aes E I H l s i i i i E i i i a i LLI E S 3 8 Eo 5g 4X 3 i i i L H l i i i i i a i i E y 1 5 J i i i O peine x S Sade AS xr S TU NES 2 Q E J3 1 i E i i 5 lt MES 2 8 b LR NM S M NN B 3 i i B i 1 i to O O c NE NE B g 8 fov Bg CN i i e S 1 1 amp E i a S Q E n E N ME 4 ty L i e ii F i e Q N L c Q C i i e i i i i i i i ko e T 1 e 9 e S e S a o TE E 4 o PU UE o d E c t AE S WM M 5 t x ai O Eod S t6 Pod Eoi 5 2 L i i i i gt i Ld 3 Io RB l S E E i L 2 O Z O x 8 8 WO 7 8 T gt o C B B Bm EB i 5 dB om B B p J a TT ater ELECTRICAL CHARACTERISTICS CURVES CON Da Mainz 10k gt gt inii PER ae amp noise at 5Vin 3 3V 3A out 50m V div iib 8 Mit RE amp noise at 5Vin 2 5 V 3A out 50mV div DOXX Mainz 10k gt gt DXX Mainz 10k gt gt Figure 9 Output ripple amp noise at 5Vin 1 8V 3A out 50mV div Figure 10 eu ripple amp noise at 5Vin 1 5V 3A out 50m V div DXX Mains 10k j i Dad Mainz 10k gt gt
7. otherwise under any patent or patent rights of Delta Delta reserves the right to revise these specifications at any time without notice DS_DNT04SIP3A_09262007 p p ud 12
8. to lo max 0 4 Vo set Over Temperature Ta 40C to 85 C 0 4 Vo set Total Output Voltage Range Over sample load line and temperature 3 0 3 0 Vo set Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth Peak to Peak Full Load 1uF ceramic 10uF tantalum 29 50 mV RMS Full Load 1uF ceramic 10uF tantalum 10 15 mV Output Current Range 0 3 A Output Voltage Over shoot at Start up 5 Vo set Output DC Current LimitInception O l 20 J 31 9 lo ae lo Output Short Circuit Current Hiccup Mode lo s c Adc rms DYNAMIC CHARACTERISTICS Positive Step Change in Output Current 50 lo max to 100 lo max 220 mV Negative Step Change in Output Current 100 lo max to 50 lo max 220 mV Setting Time to 10 of Peak Devitation 25 Us Turn On Transient lo lo max Start Up Time From On Off Control Von off Vo 10 of Vo set 7 ms Start Up Time From Input Vin Vin min Vo 10 of Vo set 7 ms Maximum Output Startup Capacitive Load Full load ESR 1mQ 1000 Fe Fullload ESR 10mQ 3000 EFFICIENCY Vo 3 3V Vin 5V 100 Load 94 0 Vo 2 5V Vin 5V 100 Load 92 5 7 Vo 1 8V Vin 5V 100 Load 90 0 Vo 1 5V Vin 5V 100 Load 88 5 Vo 1 2V Vin 5V 100 Load 87 0 Vo 0 75V Vin 5V 100 Load 81 5 Switching Frequency 300 kHz ON OFF Control Negative logic Logic Low Voltage Module On Von off 0 2 0 3 V Logic High Voltage Module Off Von off 2 5 Vin max V Logic Low Current Mod
9. 0 to 100 of lo max at 5Vin 3 3Vout Cout 1uF ceramic 10uF tantalum 0 1 V div 4 Paint jH Poo O Figure 22 Turn on with Prebias 5Vin 3 3V 0A out Vbias 1 0Vdc 2V div 10mS div TEST CONFIGURATIONS TO OSCILLOSCOPE V 2X100u BATTERY Tantalum Vi Note Input reflected ripple current is measured with a simulated source inductance Current is measured at the input of the module Figure 23 Input reflected ripple test setup COPPER STRIP Resistive luF SCOPE ee OuE l tantalum ceramic Note Use a 10uF tantalum and 1uF capacitor Scope measurement should be made using a BNC connector Figure 24 Peak peak output noise and startup transient measurement test setup CONTACT AND DISTRIBUTION LOSSES CONTACT RESISTANCE Figure 25 Output voltage and efficiency measurement test setup Note All measurements are taken at the module terminals When the module is not soldered via socket place Kelvin connections at module terminals to avoid measurement errors due to contact resistance x 100 Vi x li DS DNTOASIP3A 09262007 DESIGN CONSIDERATIONS Input Source Impedance The power module should be connected to a low ac impedance input source Highly inductive source impedances can affect the stability of the module An input capacitance must be placed close to the modules input pins to filter ripple current and ensure module stability in the presence of inductive tr
10. 160 on 15 24 0 6007 gt 7 4 06 0 160 iz r1 P 17 78 0 700 4 Vin 20 32 0 800 5 On Off 23 4 0 92 RECOMMAND PWB PAD LAYOUT RECOMM PWB PAD LAYOUT NOTES IMENSIONS ARE IN MILLIMETERS AND INCHES TOLERANCES X Xmm 0 5mm X XX in 0 02 in i 7 MA PART NUMBERING SYSTEM DT a N E Product Numbers Output Package Output On Off l Vol Opt Cod DNT 3A 5A 04 2 4V 5 5V S Single 0AO R SIP N negative F RoHS 6 6 A Standard Function Programmable Default Lead Fes P positive MODEL LIST Model Name Input Voltage Output Voltage Output Current 5Vin pde load S S DNT04S0A0S03NFA 2 4V 5 5Vdc 0 75V 3 63Vdc 93 5 MD SIP 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 x6220 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
11. aces that supply the input voltage to the module Safety Considerations For safety agency approval the power module must be installed in compliance with the spacing and separation requirements of the end use safety agency standards For the converter output to be considered meeting the requirements of safety extra low voltage SELV the input must meet SELV requirements The power module has extra low voltage ELV outputs when all inputs are ELV The input to these units is to be provided with a adequate time delay fuse in the ungrounded lead a amp FEATURES DESCRIPTIONS Remote On Off The DNT series power modules have an On Off pin for remote On Off operation Both positive and negative On Off logic options are available in the DNT series power modules For positive logic module connect an open collector NPN transistor or open drain N channel MOSFET between the On Off pin and the GND pin see figure 26 Positive logic On Off signal turns the module ON during the logic high and turns the module OFF during the logic low When the positive On Off function is not used leave the pin floating or tie to Vin module will be On For negative logic module the On Off pin is pulled high with an external pull up resistor see figure 27 Negative logic On Off signal turns the module OFF during logic high and turns the module ON during logic low If the negative On Off function is not used leave the pin floating or t
12. ie to GND module will be On IoN oFF Figure 27 Negative remote On Off implementation Over Current Protection To provide protection in an output over load fault condition the unit is equipped with internal over current protection When the over current protection is triggered the unit enters hiccup mode The units operate normally once the fault condition is removed DS DNTOASIP3A 09262007 FEATURES DESCRIPTIONS CON 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 try to restart after shutdown If the over temperature condition still exists during restart the module will shut down again This restart trial will continue until the temperature is within specification Output Voltage Programming The output voltage of the DNT can be programmed to any voltage between 0 75Vdc and 3 3Vdc by connecting one resistor shown as Rtrim in Figure 28 between the TRIM and GND pins of the module Without this external resistor the output voltage of the module is 0 7525 Vdc To calculate the value of the resistor Rtrim for a particular output voltage Vo please use the following equation 21070 Rtrim E 0 7525 suoa For example to program the output voltage of the DNS module to 1 8Vdc Rtrim is calculated as follows
13. ncreasing 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 PWB FACING PWB MODULE AIR VELOCITY AND AMBIENT TEMPERATURE MEASURED BELOW THE MODULE 50 8 2 0 Note Wind Tunnel Test Setup Figure Dimensions are in millimeters and Inches Figure 31 Wind tunnel test setup DS DNTOASIP3A 09262007 THERMAL CURVES gt gt lt gt KON AN SS lsc vey ey ey NY Vey Figure 32 Temperature measurement location The allowed maximum hot spot temperature is defined at 125 C DNTO4SOAORO3 standard Output Current vs Ambient Temperature and Air Velocity Output Current A Vin 5V Vout 0 75 3 3V Through PCB Orientation Natural Convection 25 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature C Figure 33 Output current vs ambient temperature and air velocity Vin 5V Vout 0 75V 3 3V Through PCB Orientation 1 Em v MECHANICAL DRAWING SMD PACKAGE OPTIONAL SIP PACKAGE
14. ule On lon off E u Logic High Current Module Off lon off MTBF lo 100 of lo max Ta 25 C TBD M hours Weight 2 3 grams DS DNTOASIP3A 09262007 r s ra EM T C I 3 i 5 1 LER O i O E i a E O 1 gt I gt i d i gt i LC pe T N l QU i a g EO L 3 g ST gt trees cd 2 R i R a x 2 E z EO n Lo ei Is X HE 5 T amp m i E a i Ij i is TU S 4 J 1 ME h 1 cf o zoo 2 U E P oc H i 3 i al eo 8 i TEE D a s 8 i E a be B 3 PP ee mmmhmmemmbmsmummmmmH e E 5 Bia oo m d Poo S 8 S i i 7 6 i i i i l a r t 1 l B g i 3 B g El S d gt MEME ME MEE gt i ii i E i E e OT 1 e Q i 1 c E i i Vl I i E 1 2 i P o O 4 9 1 ial ee Su m ee ee err TIME 8 POUR B 5 D i i E i gt o 1 S c R p we 3 G je i a O Q 2 La O T b a wen a pa xa N e e e ZBE RSS Ss gt amp 8 B 9 x B gt 5 Bg PSOE o 04 ATATA 3 3 C25 rani B a A3uaT319 3 3 244 Amaya D LL lr LL 25 ASUSISIYA 9 Anaya 45 Aomsrana gt ad 1 rA MEM S NE Ej wm O D Lou 1 3 x gt to DB do e LR d Go POL od d e t Y Q Q NB mo o3 EET 3 il i B vr d a i S BeBe ete eee pee ee pee i
15. utput pin for margining down Figure 30 shows the circuit configuration for output voltage margining If unused leave the trim pin unconnected A calculation tool is available from the evaluation procedure which computes the values of R margin up and Rmargin down for a specific output voltage and margin percentage Rmargin down Ql On Off Trim Rmargin up Figure 30 Circuit configuration for output voltage margining DS DNTOASIP3A 09262007 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 height of this fan duct is constantly kept at 25 4mm 1 Thermal Derating Heat can be removed by i
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