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technical preview: contains preliminary information description the mfp series? of dc/dc converters do not require any external components to achieve all specified performance levels. they are a high-reliability, high-efficiency point of load converter for use with a 3.3 vdc input bus or a 5 vdc input bus. the MFP0507S model has the flexibility to be set for any output voltage from 0.64 vdc to 3.5 vdc. the converter operates from an input of 3.0 to 6.0 v in with an undervoltage shutdown at 2.75 v, an overvoltage shutdown of 8.5 v and up to a 15 v transient for up to 1 second. the non-isolated, feature-rich mfp uses a buck converter design with synchronous rectification. the design allows the unit to operate synchronously to no output load, ensuring high efficiency at the lightest loads without switching off the synchronous devices. important features include a solid state switch, inrush current limiting, synchronization with an external system clock and the ability to current share allowing multiple devices to supply a common load. the mfp includes an internal house keeping supply that is active at inputs as low as 2 vdc and provides a boosted and regulated voltage supply for internal use. this internal supply is one of the reasons that this product can provide full power at very high efficiency at input voltages as low as 3 vdc. no external power source or external bias is required. the mfp converters are designed for the large, fast transient load currents typical to digital loads. see figure 4 for a typical connection diagram. the mfp series is intended to be powered by a fully regulated power source. us patents interpoint converters may use one or more of the following us patents 5,521,807, 5,694,303 and 5,631,822. features n o external components required operating temperature -70 to +150c ? cold start at -90c ? up to 92% efficiency, flat down to 30% load ? qualified up to mil-prf-38534 class k ? radiation hardness assurance (rha) up to ? level f, 300 krad(si) tid, available on request input voltage range 3.0 to 6.0 vdc ? input transient survivability to 15 v ? in for up to 1 sec. inhibit and sync functions ? current monitoring ? current sharing pin for parallel operation ? five pin-selectable, preset voltages: ? 0.64, 0.8, 1.6, 2.5 and 3.3 - output voltage continuously adjustable - from 0.64 to 3.5 v with resistors indefinite output short circuit protection ? adjustable start-up sequencing ? remote sense and voltage margining ? internal solid state power switch provides many benefits ? including inrush current limiting history o f proven performance interpoint, a crane co. company, was issued its first standard microcircuit drawing (smd) for a class h hybrid in 1992. our first class k hybrid smd was issued in 1997 and we were one of the first companies to certify manufacturing to class k. our redmond site has a dscc approved radiation hardness assurance (rha) plan. our products are on dscc smds with rha p, r, or f code for 30, 100 and 300 krad(si), respectively. maximu m flexible p ower (mfp ) in a s ingle 7 a mp point of load. a use-anywhere p ower solution for d igital and non-d igital systems. crane aerospace & electronics power solutions m aximum flexible p ower (mfp) single output p oint of load page 1 of 19 MFP0507S technical preview rev d - 2010.11.18 technical preview: MFP0507S , 3 to 6 vdc i n, 7 a mp, dc/dc converter crane aerospace & electronics electronics group (interpoint brand) po box 97005 ? redmond wa 98073-9705 425.882.3100 ? power@crane-eg.com www.craneae.com/interpoint
electrical characteristics tables table 1: absolute maximum ratings . . . . . . . . . . . . . . . . . 3 table 2: input specifications . . . . . . . . . . . . . . . . . . . . . 3 table 3: output specifications . . . . . . . . . . . . . . . . . . . . 4 figure 1: efficiencies . . . . . . . . . . . . . . . . . . . . . . . . . 6 pin out table 4: MFP0507S pin out . . . . . . . . . . . . . . . . . . . . . 7 model numbering key . . . . . . . . . . . . . . . . . . . . . . . . 7 mechanical information . . . . . . . . . . . . . . . . . . . . . . . . . . 8 figure 2: MFP0507S case dimensions . . . . . . . . . . . . . . . . 8 thermal and mounting considerations . . . . . . . . . . . . . . . . . 9 figure 3: infrared image of mfp . . . . . . . . . . . . . . . . . . . 9 table 5: chomeric material specifications, thermal pad . . . . . . 10 pin functions and applications figure 4: typical connection diagram . . . . . . . . . . . . . . . . 11 pin 1: enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 pin 4: sync . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 figure 5: enable and sync equivalent circuit . . . . . . . . 12 table 6: enable capacitance for sequencing . . . . . . . . . 12 pins 2 and 3: +v in and v in common . . . . . . . . . . . . . . . . 13 figure 6: input voltage vs maximum output voltage . . . . . . 13 pin 5: remote sense . . . . . . . . . . . . . . . . . . . . . . . . 14 figure 7: sense pin voltage margining . . . . . . . . . . . . . 14 pin 6: share . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 figure 8: typical share connection . . . . . . . . . . . . . . . 15 pins 7 and 8: trim a and trim b . . . . . . . . . . . . . . . . . 16 table 7: user configurable output voltages . . . . . . . . . . . 16 pins 9 and 10: v out common and +v out . . . . . . . . . . . . . . 16 figure 9: maximum rated output current . . . . . . . . . . . . 16 performance curves . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 figures 10 and 11: input ripple current . . . . . . . . . . . . . . . 17 figures 12 and 13: output ripple voltage . . . . . . . . . . . . . . 17 figures 14 and 15: load transient response . . . . . . . . . . . . 17 figure 16: share as monitor for output current . . . . . . . . . . 17 figure 17: operating frequency vs temperature and v in . . . . . 17 screening tables screening table 1: element evaluation . . . . . . . . . . . . . . . 18 screening table 2: environmental screening . . . . . . . . . . . . 19 t able of contents crane aerospace & electronics power solutions m aximum flexible p ower (mfp) single output p oint of load technical preview: MFP0507S , 3 to 6 vdc i n, 7 a mp, dc/dc converter page 2 of 19 www.craneae.com/interpoint technical preview: contains preliminary information MFP0507S technical preview rev d - 2010.11.18
table 1, note 1. caution: heat from reflow or wave soldering may damage the device. solder pins individually with heat application not exceeding 300c for 10 seconds per pin. crane aerospace & electronics power solutions m aximum flexible p ower (mfp) single output p oint of load technical preview: MFP0507S , 3 to 6 vdc i n, 7 a mp, dc/dc converter page 3 of 19 www.craneae.com/interpoint technical preview: contains preliminary information MFP0507S technical preview rev d - 2010.11.18 table 1: absolute maximum ratings parameter condition symbol min typ max units operating temperature all t c -70 +150 c storage temperature all t stg -90 +155 c maximum weight 23 grams lead soldering temperature 1 10 seconds max 300 c table 2: input s pecifications parameter state condition figure symbol min typ max units input voltage range continuous 6 v in 0 5.0 8.5 vdc operating 6 v in 3.0 3.3 or 5.0 6.0 transient 1 6 v in tran 8.5 15 v input under voltage lockout 6 2.2 2.5 3.0 vdc input current v in = 3 v i in 180 230 no load v in = 6 v i in 110 140 ma disabled v in = 3 v i in 105 120 v in = 6 v i in 50 65 enable/disable (pin 1) input open circuit voltage pin 1 open 5 v pin 1 1.6 2.3 threshold unit enabled v in 3 to 6 v 2.2 vdc threshold unit disabled 5 v pin 1 1.5 enable pin current unit disabled v in 3 to 6 v i pin 1 4 ma external synchronization standard frequency range 5 270 330 khz extended frequency range 2 270 600 amplitude 3.0 5.0 6.0 v duty cycle 40 50 60 % frequency source impedance 1.5 kohms switching frequency -55 to +125c 17 280 330 -70 to +150c 17 270 340 khz table 2, notes: 1. 50 microsecond minimum transition time. 2. efficiency may be reduced by up to 2% at full load due to switching losses. electrical characteristics: -55 to +125c t c , 5 vdc v in (v in nom ), 100% load, free run, unless otherwise specified.
crane aerospace & electronics power solutions m aximum flexible p ower (mfp) single output p oint of load technical preview: MFP0507S , 3 to 6 vdc i n, 7 a mp, dc/dc converter page 4 of 19 www.craneae.com/interpoint technical preview: contains preliminary information MFP0507S technical preview rev d - 2010.11.18 table 2: input s pecifications parameter state condition figure symbol min typ max units power dissipation no load 0.7 full load 1.24 1.83 w fault power output short 2.5 input ripple current v 1 (0.8v) v in = 3 20 hz - 20 mhz 200 v 1 (0.8v) v in = 6 v i in-rip 200 _ ma p-p v 4 (3.3v) 20 hz - 20 mhz 200 i rms average 60 ma rms table 3: output specifications parameter state condition figure symbol min typ max units operating voltage accuracy v 1 0.8, 25c 0.778 0.822 v 1 0.8, -55 to +125c 4 v 1 0.770 0.800 0.830 vdc v 1 0.8, -70 to +150c callout 1 0.762 0.838 v 2 1.6, 25c 1.566 1.634 v 2 1.6, -55 to +125c 4 v 2 1.550 1.600 1.650 vdc v 2 1.6, -70 to +150c 50% load callout 1 1.534 1.666 v 3 2.5, 25c 2.453 2.548 v 3 2.5, -55 to +125c 4 v 3 2.428 2.500 2.573 vdc v 3 2.5, -70 to +150c callout 1 2.403 2.598 v 4 3.3, 25c 3.241 3.360 v 4 3.3, -55 to +125c 4 v 4 3.208 3.300 3.393 vdc v 4 3.3, -70 to +150c callout 1 3.175 3.426 load regulation 25c 20 v out -55 to +125c i o 50% load to full v r load 20 mv v 1 , v 2 , v 3 , v 4 -70 to +150c tbd line regulation 25c 20 v out -55 to +125c v in 3 to 6 v v r line 20 mv v 1 , v 2 , v 3 , v 4 -70 to +150c tbd total regulation v out (calculated) -55 to +125c 50% load to full v r total -3.00 1.5 3.00 % v 1 , v 2 , v 3 , v 4 -70 to +150c -4.00 2.5 4.00 (c o n t i n u e d ) electrical characteristics: -55 to +125c t c , 5 vdc v in (v in nom ), 100% load, free run, unless otherwise specified.
crane aerospace & electronics power solutions m aximum flexible p ower (mfp) single output p oint of load technical preview: MFP0507S , 3 to 6 vdc i n, 7 a mp, dc/dc converter page 5 of 19 www.craneae.com/interpoint technical preview: contains preliminary information MFP0507S technical preview rev d - 2010.11.18 table 3: output specifications parameter state condition figure symbol min typ max units output ripple 25c 25 50 and noise -55 to +125c 20 hz to 20 mhz 12 and 13 v out-rip 30 60 mv p-p v 1 , v 2 , v 3 , v 4 -70 to +150c 40 80 output current v 1 0.8, -55 to +125c 0 7.0 v 1 0.8, -70 to +150c 0 6.0 v 2 1.6, -55 to +125c v in = 3 to 6 v 9 i out 0 6.4 a v 2 1.6, -70 to +150c 0 4.0 v 3 2.5, -55 to +125c 0 5.0 v 3 2.5, -70 to +150c 0 4.0 v4 3.3, -55 to +125c 0 5.0 v 4 3.3, -70 to +150c 0 4.0 output power v 1 0.8, -55 to +125c 0 5.6 v 1 0.8, -70 to +150c 0 4.8 v 2 1.6, -55 to +125c 9 p out 0 10.2 w v 2 1.6, -70 to +150c v in = 3 to 6 v 0 6.4 v 3 2.5, -55 to +125c 0 12.5 v 3 2.5, -70 to +150c 0 10.0 v 4 3.3, -55 to +125c 0 16.5 v 4 3.3, -70 to +150c 0 13.2 external load 5000 f capacitance efficiency v 1 0.8, 25c 66.7 73 v 1 0.8, -55 to +125c 1 eff 1 63.5 % v 1 0.8, -70 to +150c v 2 1.6, 25c 80.4 84 v 2 1.6, -55 to +125c 1 eff 2 78.4 % v 2 1.6, -70 to +150c v 3 2.5, 25c 86.8 89 v 3 2.5, -55 to +125c 1 eff 3 85.4 % v 3 2.5, -70 to +150c v 4 3.3, 25c 89.5 92 v 4 3.3, -55 to +125c 1 eff 4 88.5 % v 4 3.3, -70 to +150c (c o n t i n u e d ) electrical characteristics: -55 to +125c t c , 5 vdc v in (v in nom ), 100% load, free run, unless otherwise specified.
f i g u r e 1: e f f i c i e n c i e s crane aerospace & electronics power solutions m aximum flexible p ower (mfp) single output p oint of load technical preview: MFP0507S , 3 to 6 vdc i n, 7 a mp, dc/dc converter page 6 of 19 www.craneae.com/interpoint technical preview: contains preliminary information MFP0507S technical preview rev d - 2010.11.18 table 3: output specifications parameter state condition figure symbol min typ max units turn on peak enable 50 mv pk deviation v 1 , v 2 , v 3 , v 4 step start v in 0 to v in-nom 50 turn on settling time release of inhibit/enable i in 0 to max 4 7 ms to 2%, v 1 , v 2 , v 3 , v 4 step start v in = 0 to 6 v 4 7 output load v in 3.3v (settle to 2%) i o 50 - 100% 14 and 15 250 s transient response v in 5v (settle to 2%) @ 1 a / s 250 load transient peak deviation v in 3.3v (settle to 2%) i o 50 - 100% 14 and 15 250 mv pk v 1 , v 2 , v 3 , v 4 v in 5v (settle to 2%) @ 1 a / s 250 output voltage trim v 1 , v 2 , v 3, v 4 see table 7 in the pin 7 and 8, trim section remote sense positive output difference from v out to v sense 4 0.20 vdc voltage margining positive output difference from v out to v sense 0.20 vdc sequence time delay see table 6 in the pin 1, enable section electrical characteristics: -55 to +125c t c , 5 vdc v in (v in nom ), 100% load, free run, unless otherwise specified. (c o n t i n u e d ) 50 55 60 65 70 75 80 85 90 95 output current e ff ic i e n c y 5 v in 3.3 v out 5 v in 2.5 v out 3.3 v in 1.6v out 3.3 v in 0.8 v out refer to ?table 3: output specifications? for maximum output currents. 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
pin number designation function if p in is not used 1 enable enable, provides remote turn on and off leave open 2 +v in positive input always used 3 v in com input common always used 4 sync synchronization leave open 5 sense sense, voltage drop compensation connect to + v out pin 10 6 share current share, parallel oper - ation, or current monitor leave open 7 trim a preset output voltage and trim see figure 4 and table 7 8 trim b preset output voltage and trim see figure 4 and table 7 9 v out com output common (also sense return) always used 10 +v out positive output always used t a b l e 4: mfp0507 s p in o u t crane aerospace & electronics power solutions m aximum flexible p ower (mfp) single output p oint of load technical preview: MFP0507S , 3 to 6 vdc i n, 7 a mp, dc/dc converter page 7 of 19 www.craneae.com/interpoint technical preview: contains preliminary information MFP0507S technical preview rev d - 2010.11.18 pin out mod el nu mbering key mfp 05 07 s v 1 / kr maximum flexible power nominal input voltage output current screening and rha number of outputs (s = single) case option (leave blank for standard case, add v for downleaded case 1 ) (st, wt, 883, hp, hr, kp, kr, or kf see screening tables 1 and 2 for more information) model numbering key note: 1. downleaded case v is a future option which will be announced when available.
crane aerospace & electronics power solutions m aximum flexible p ower (mfp) single output p oint of load technical preview: MFP0507S , 3 to 6 vdc i n, 7 a mp, dc/dc converter page 8 of 19 www.craneae.com/interpoint technical preview: contains preliminary information MFP0507S technical preview rev d - 2010.11.18 s ize (nominal) single 1.195 x 1.195 x 0.340 ? materials header - cold rolled steel / nickel ? cover - kovar/nickel ? pins - 3:1 cu cored alloy 52/gold over nickel ? compression glass seal ? case dimensions in inches (mm) tolerance 0.005 (0.13) for three decimal places. 0.01 (0.3) for two decimal places unless otherwise speci - fied. please refer to the numerical dimensions for accuracy. f i g u r e 2: mfp0507 s c a s e d i m e n s i o n s mfp series single top view case d3 1.200 max (30.48) 11 x 0.190 (4.83) 0.346 max. (8.79) seam seal 1 2 3 4 5 6 10 9 8 7 0.972 (24.69) 0.672 (17.07) 0.822 (20.88) 0.522 (13.26) 0.372 (9.45) 0.222 0.010 (6.54 .025) 0.040 0.002 dia. (1.02 .05) 0.240 0.010 (6.10 0.25) 1.200 max (30.48) flatness of base: 0.003 inch per inch mechanical information
t h e r m a l c o n s i d e r a t i o n s the mfp is designed to be mounted close to the point- of-use which, in many cases, may be on a printed circuit board. the high efficiency of the mfp reduces the issues normally associated with the converters internal dissipation. the maximum internal dissipation occurs when the product is configured as a 3.3 volt output at full load. this condition will result in a dissipation of not more than 1.83 watts. this dissipation is nearly uniformly distributed over the base area of 1.4 square inches. full load power loss is largely independent of output voltage, for instance at 0.8 volts and full load the internal power loss maximum is again 1.83 watts. in order to determine the cooling or heat sinking requirements in the application, the maximum product power dissipation should be calculated from the product efficiency and output power. graphs and tabled values in the specification table can be used to find the efficiency given the input voltage, selected output voltage and output load. the internal dissipation, difference between output and input power, can be calculated from the equation below. where: p out = output power ? = efficiency many applications will not require special efforts at cooling, however, this depends on ambient temperatures, adjacent components, and other factors. if product cooling is required for safe operation convention and/ or conduction can be used. thermal considerations require that the base of the mfp be maintained at a safe temperature of less than the maximum rating. all components internal to the mfp are bonded to the metal base of the package. the base is the surface that is important if conduction cooling is used. it is a good practice to bond the device to the pcb or mounting surface with a thermally conductive pad. such pads provide some degree of conduction cooling to the mounting surface depending on the amount of voiding at the interface. in the case of the side leaded mfp package, this thermal pad will firmly locate the device to the surface so that the lead connections only manage the electrical requirements and not the mechanical requirements. in figure 3 below, the thermal rise internal to the mfp can be seen to be only 6c. this low thermal rise gives the end user more flexibility in board design options to meet applicable derating guidelines. th ermal and mounting considerations p diss = p out (1 - ) / f = thermal resistance of converter attachment to board ? t = p diss x f t case = t base - ? t crane aerospace & electronics power solutions m aximum flexible p ower (mfp) single output p oint of load technical preview: MFP0507S , 3 to 6 vdc i n, 7 a mp, dc/dc converter page 9 of 19 www.craneae.com/interpoint technical preview: contains preliminary information MFP0507S technical preview rev d - 2010.11.18 f i g u r e 3: i n f r a r e d i m a g e , mfp a t f u l l l o a d w i t h 6 v in , 3.3 v out
m o u n t i n g c o n s i d e r a t i o n s interpoint recommends chomerics double-sided adhesive materials for attachment of the mfp to a circuit board or metal surface. because of the mfps efficiency the thermal characteristics of the chomeric materials are not required even though the chomeric material provides good thermal conductivity. the following information refers to products attached using chomeric double-sided adhesive. vibration testing the mfp was tested in random vibration using both the t1680 and t404 to mount the units to an aluminum vibration fixture. testing was performed to the most severe level in mil-std-883 method 2026; condition 2, letter k, overall g rms 51.1, for 15 minutes per axis, 3 axes and passed. no mounting detachment occurred. application recommended size for the adhesive tapes is 1.18 x 1.18 inches. application of the tapes is a matter of peeling the release liners and attaching to the mfp and circuit board respectively. see chomerics data sheets and application notes for details. the t404 material does require higher application pressure. the t1680 material is specifically made for low pressure attachment of hybrids, ceramic and flat packages. removal refer to chomerics application notes for thermattach tape. specifications refer to table 5: chomeric material specifications for thermal conductivity, temperature range and out-gassing. material thermal conductivity temperature range outgassing data mounting application w/m-k c %tml/%cvcm cho-therm 1671 (note 2) 2.6 -60 to +200 0.76 0.07 rougher surfaces cho-therm t1680 (note 1) 0.65 -60 to +200 1.27 0.23 smooth surfaces thermattach t404 (note 1) 0.4 -30 to +125 none smooth surfaces th ermal and mounting consid erations (cont. ) table 5, notes: 1. chomerics thermattach tape t404 and cho-therm t1680 are two excellent choices for circuit board mounting. both have a kapton insulating barrier with pressure sensitive adhesive (psa) on both sides. 2.chomerics cho-therm 1671 is a good choice for mounting on rougher surfaces. this material has a fiberglass barrier with psa on one side. it can be obtained with psa on both sides if needed. t a b l e 5: c h o m e r i c m a t e r i a l s p e c i f i c a t i o n s crane aerospace & electronics power solutions m aximum flexible p ower (mfp) single output p oint of load technical preview: MFP0507S , 3 to 6 vdc i n, 7 a mp, dc/dc converter page 10 of 19 www.craneae.com/interpoint technical preview: contains preliminary information MFP0507S technical preview rev d - 2010.11.18
p in fu nctions and applications + v in en v in com sync in sense share 1 2 3 4 5 6 +v out v out com trim b trim a 9 10 8 7 mfp single pol converter + v in en v in com sync in sense share 1 2 3 4 5 6 +v out v out com trim b trim a 9 10 8 7 mfp single pol converter + v in en v in com sync in sense share 1 2 3 4 5 6 +v out v out com trim b trim a 9 10 8 7 mfp single pol converter + v in en v in com sync in sense share 1 2 3 4 5 6 +v out v out com trim b trim a 9 10 8 7 mfp single pol converter 12.7 k external enable + ? i out monitoring 3.3 v load + _ 2.5 v load + _ 1.2 v load + _ 0.8 v load + _ v in dc c t4 c t3 c t1 c t2 1 2 3 4 5 f i g u r e 4: t y p i c a l c o n n e c t i o n d i a g r a m u s i n g enable, trim, sense, a n d i out m o n i t o r i n g for more information: pins 7 and 8, trim section pin 5, remote sense section pin 1, enable section, sequencing. table 6 lists c t values. pin 6, share section 1 2 3 4 5 crane aerospace & electronics power solutions m aximum flexible p ower (mfp) single output p oint of load technical preview: MFP0507S , 3 to 6 vdc i n, 7 a mp, dc/dc converter page 11 of 19 www.craneae.com/interpoint MFP0507S technical preview rev d - 2010.11.18 technical preview: contains preliminary information
p in fu nctions and applications p in 1: enable f u n c t i o n the mfp provides an enable pin that will allow normal power conversion to occur if left open or unconnected. the enable pin allows remote turn-on and turn-off control of the mfp. connecting this pin to ground will disable power conversion, resulting in no output voltage and greatly reduced current consumption. the mfp enable function will work with an open collector device connected to the pin or with a logic high voltage from a digital device as long as the logic high voltage is greater than the minimum voltage listed in the specification for enabled operation. the enable pin is active high at > 0.8 v or with a floating input. sequencing: the start-up of the mfp can be delayed with the addition of an external capacitor connected to the enable pin. this feature is useful in sequencing the start-up of multiple point of load converters in a system requiring a specific startup sequence for various low-voltage loads. the startup delay is roughly equal to 1 millisecond per microfarad of capacitance. more precise external capacitance values can be found in table 6 where it can be seen that there is a variation in startup delay time as the input voltage varies. the listed delay is from the beginning of application of power to the beginning of internal power conversion. there will be an additional delay as the power converter begins a normal start-up sequence and ramps to final output voltage. p in 4: sync the mfp includes a synchronization feature, a key capability in low noise system design. the internal conversion oscillator can be synchronized with a system clock or with a bus voltage source. the mfp is designed to synchronize with a 300 khz system but can be synchronized with sources up to 600 khz, a frequency range used by many dc/dc converters. a synchronized system prevents the generation of low frequency sub harmonics in the audio range. the synchronization input amplitude can range from 3 vdc to 6 vdc. figure 17 illustrates the relationship between operating frequency, temperature and input voltage. the external synchronization timing cycle can be varied cycle to cycle for systems employing spread-spectrum clocking or for slave sharing clock interleaving. the dc level of the sync pin (pin 4) can be used to detect the state of the input voltage protection switch. enable 1 + v in 2 v in com 3 sync in 4 v out com 9 +v out 10 2.2 k 22.1 k 5.11 k 220 f 330 f case case case control clock housekeeping under voltage / over voltage protection dc/dc f i g u r e 5: enable a n d sync e q u i v a l e n t c i r c u i t t a b l e 6: e n a b l e c a p a c i t a n c e v a l u e s f o r s t a r t -u p d e l a y enable capacitance : delay from enable release to start of output rise (25c) units capacitance (c t ) 0.22 0.33 0.47 0.68 1.0 1.5 2.2 3.3 4.7 6.8 10 f v in 3.3 v 0.8 1.1 1.6 2.2 3.1 4.6 6.7 1.0 14.1 20.2 29.7 ms v in 5.0 v 0.4 0.5 0.7 0.9 1.3 1.8 2.6 3.9 5.5 7.8 11.4 ms crane aerospace & electronics power solutions m aximum flexible p ower (mfp) single output p oint of load technical preview: MFP0507S , 3 to 6 vdc i n, 7 a mp, dc/dc converter page 12 of 19 www.craneae.com/interpoint MFP0507S technical preview rev d - 2010.11.18 technical preview: contains preliminary information
p in fu nctions and applications p i n s 2 a n d 3: +v in a n d v in c o m m o n input voltage the input voltage range for normal operating conditions is 3.0 to 6.0 vdc (figure 6). for input ripple current see page 17, figures 10 and 11. the v in common pin is connected to v out common and case ground. the input and output should share the same ground plane in the power system design. a d d i t i o n a l i n p u t b l o c k f e a t u r e s input under and over voltage protection the mfp includes a solid state switch on the input section. this switch opens for fault conditions including input voltages below the minimum and transient voltages above the maximum. the safe operating range includes ground and extends to 8.5 vdc indefinitely and up to 15 volts as a time limited transient. the switch will only close when certain internal conditions are met, including the proper operation of the internal housekeeping supply and a safe input voltage range. no single point failure the solid state switch (sss) can be used to provide one additional level of reliability: no single point failure will result in a connection from input voltages to output loads. the sss can be opened by grounding of the enable pin. the status of the sss can be determined by detecting the voltage on the sync pin. a logic low on this pin indicates that the sss is open. no external bias required an internal housekeeping supply that is active at inputs as low as 2 vdc provides a boosted and regulated voltage supply for internal use. this internal supply is one of the reasons that this product can provide full power at very high efficiency at input voltages as low as 3 vdc. no external power source or external bias is required. input reflected noise and inrush current limit substantial input capacitance is included and the input solid state switch previously described is designed to provide associated inrush current limiting. the substantial input capacitance and high sss provide a pi filter configuration that results in very low reflected ripple current. the very low input noise and inrush limiter make the mfp unique among point of load converters. f i g u r e 6: i n p u t v o l t a g e v s m a x i m u m o u t p u t v o l t a g e crane aerospace & electronics power solutions m aximum flexible p ower (mfp) single output p oint of load technical preview: MFP0507S , 3 to 6 vdc i n, 7 a mp, dc/dc converter page 13 of 19 www.craneae.com/interpoint MFP0507S technical preview rev d - 2010.11.18 technical preview: contains preliminary information 2.0 1.5 0.8 0.64 0 8.5 15.0 input voltage (v) safe input, output disabled 2.75 4.25 3.3 under voltage shutdown 3.4 1.6 1.0 0.5 operating input output voltage (v) safe input, output shutdown region 1.0 4.0 3.0 2.0 6.0 5.0 0 3.3 3.0 2.5
p in fu nctions and applications p in 5: sense the mfp includes a positive remote sense. the sense pin is intended to be used to maintain the desired preset voltage at the point-of-use by connecting the remote sense to the +vout supply in close proximity to the load. up to 0.3 volts of power line drop can be accommodated. if the sense pin lead is not connected to the output positive power pin, the output will rise a total of 0.4 volts. the output voltage can be margined upward from the preset value as much as 0.2 volts by the addition of a resistor between the positive sense pin and the output power pin. the amount of increase in the output voltage by margining will reduce the available remote sense range by the same amount. the sum of margined voltage and voltage sense drop must be less than 0.2 volts. sense margining can be used to adjust v out from 3.3 to 3.5. connections must be made as close as possible to common and to r x . this method uses the sense pins voltage compensation function to raise the output voltage. therefore, there will not be an option to compensate for voltage drop at the load. if connections have no voltage drop, the formula for the resistor is r x = 1000 in ohms (0.2697) (v out - 3.3) -1 [ ] t r i m a pin 7 t r i m b pin 8 ou t c o m p i n 9 +v ou t pin 1 0 se n s e pi n 5 r x ou + - v v t f i g u r e 7: sense p in v o l t a g e m a r g i n i n g , v out f r o m 3.3 t o 3.5 1, 2 figure 7, notes: 1. for external connections see page 11, figure 4: typical connection diagram. 2. see page 16, table 7: user configurable outputs for output voltages from 0.64 to 3.3. crane aerospace & electronics power solutions m aximum flexible p ower (mfp) single output p oint of load technical preview: MFP0507S , 3 to 6 vdc i n, 7 a mp, dc/dc converter page 14 of 19 www.craneae.com/interpoint MFP0507S technical preview rev d - 2010.11.18 technical preview: contains preliminary information
p in fu nctions and applications p in 6: share the mfp includes a current share feature that allows multiple units to operate as a single supply capable of providing a total current that is the sum of the maximum from each of the units that are operated in parallel. in connecting units in parallel, the share pin is connected between units and all but one unit, the master, will have trim a and trim b pins tied to the positive sense pin. the master will have the trim pins configured for the desired output voltage while the other units in parallel will match the current and voltage of the master unit. the share pin can be used as an output current monitor because the voltage on this pin is proportional to unit current. see page 11, figure 4, callout 5. the share pin can be used to drive an mfp as a voltage controlled current source where the output current will be proportional to the applied voltage with an offset. output currents corresponding to share pin voltages are shown in figure 16: share as monitor for output current. connections for current monitoring are also shown in figure 4. two connections are critical to sharing between two units. the share pins of the two (or more) units must be tied together and the trim a and trim b outputs must be tied together and shorted to +vout and sense for each unit that is not the master. the master unit will be the one with the highest pre-set output voltage. in the case of figure 8, callout 3, the master is configured with both trim pins open for a 0.8 v output. + v in en v in com sync in sense share 1 2 3 4 5 6 +v out v out com trim b trim a 9 10 8 7 mfp single pol converter master + v in en v in com sync in sense share 1 2 3 4 5 6 +v out v out com trim b trim a 9 10 8 7 mfp single pol converter slave v in dc + ? system clock dc/dc converter + lo ad + v in v in com sync in sync out inhibit +v out v out com 1 2 3 f i g u r e 8: t y p i c a l s h a r e c o n n e c t i o n w i t h o p t i o n a l s y n c 1 2 3 for more information: pin 1, enable section pin 4, sync section pins 7 and 8, share section above crane aerospace & electronics power solutions m aximum flexible p ower (mfp) single output p oint of load technical preview: MFP0507S , 3 to 6 vdc i n, 7 a mp, dc/dc converter page 15 of 19 www.craneae.com/interpoint MFP0507S technical preview rev d - 2010.11.18 technical preview: contains preliminary information
p in fu nctions and applications p i n s 7 a n d 8: trim a a n d trim b output voltage set and adjustment the MFP0507S, single output model has the flexibility to be set for any voltage from 0.64 to 3.3 vdc. the mfp includes five precision set-points that can be accomplished with pin connections alone and no trim resistor. an open circuit on both trim pins results in a 0.80 vdc output, grounding one or the other or both pins results in precise output voltages of 1.6 vdc, 2.5 vdc or 3.3 vdc. one other preset voltage is possible using the sense pin (pin 5). connecting both trim pins to the positive sense pin results in 0.64 vdc. in-between values of output voltage can be set with the use of external trim resistors in series with the trim pins to ground. any voltage intermediate to the pre-set voltages is available by adding a trim resistor between common and both trim pins. table 7 lists available pin-configurable and adjust/trim output voltages. output voltage using pin configurations or trim resistors desired voltage pin configurable trim resistor (r t ) 1 from ground to pin 7 and 8 0.64 fixed sense pin v s both pins 7 and 8 connected to sense pin 5 0.8 fixed v 1 both pins 7 and 8 open C 0.9 adjust C 57.6 k 1.0 adjust C 27.4 k 1.2 adjust C 12.7 k 1.5 adjust C 6.19 k 1.6 fixed v 2 trim a, pin 7 open. trim b, pin 8 grounded 1.8 adjust 3.57 k 2.0 adjust 2.61 k 2.5 fixed v 3 trim a, pin 7 grounded. trim b, pin 8 open 3.3 fixed v 4 both pins 7 and 8 grounded t a b l e 7: u s e r c o n f i g u r a b l e o u t p u t v o l t a g e s 1, 2 f i g u r e 9: m a x i m u m r a t e d o u t p u t c u r r e n t p i n s 9 a n d 10: +v out a n d v out c o m m o n due to the buck topology, the required output voltage of the mfp must always be at least 0.8 v lower than the input. precise values of achievable output voltages and currents as a function of v in are shown on page 15, figure 8. see page 17, figures 11 and 12 for typical output ripple plots. table 7, notes: 1. formula for r t in table 7 for v out below 3.3 and above 0.8 v: r t = 6.031 - 2.4 in kohms v out - 0.804 2. see page 14, figure 7 sense pin voltage margining, v out from 3.3 to 3.5. crane aerospace & electronics power solutions m aximum flexible p ower (mfp) single output p oint of load technical preview: MFP0507S , 3 to 6 vdc i n, 7 a mp, dc/dc converter page 16 of 19 www.craneae.com/interpoint MFP0507S technical preview rev d - 2010.11.18 technical preview: contains preliminary information 0 3.5 output voltage (v) 5.0 output current (a) v in = 6.0v v in = 5.0v v in = 4.0v v in = 3.0v 8.0 8.5 maximum possible overload current normal operating region operation not specified or guaranteed in this region 0.64 2.0 1.5 1.0 3.0 2.5 4.0 7.0 6.0
f i g u r e 12 f i g u r e 14 f i g u r e 15 MFP0507S output ripple 40 mv/div 1 s/div MFP0507S load transient MFP0507S load transient 3.3 v in , 1.2 v out , 5 a load 3.3 v in , 1.2 v out , 5 a load 5 v in , 3.3 v out , 5 a load f i g u r e 13 MFP0507S output ripple 40 mv/div 1 s/div 5 v in , 3.3 v out , 5 a load 500 s/div 500 s/div 100 mv/div 100 mv/div f i g u r e 10 MFP0507S input ripple (i in ) 100 ma/div 3.3 v in , 1.2 v out , 5 a load 1 s/div f i g u r e 11 MFP0507S input ripple (i in ) 5 v in , 3.3 v out , 5 a load 100 ma/div 1 s/div operating frequency vs temperature and input voltage 300 khz 302 khz 304 khz 306 khz 308 khz 310 khz 312 khz 314 khz 316 khz 318 khz 320 khz -80 -40 0 40 80 120 160 c temperature operating frequency vin=6v vin=5v vin=3v vin=4v f i g u r e 17: o p e r a t i n g f r e q u e n c y v s t e m p e r a t u r e a n d v in this graph illustrates the performance of proprietary interpoint technology typical performance curves: 25c t c , 5 vdc v in , 100% load, free run, unless otherwise specified. 3.3v 2.5v 0.8v 1.6v f i g u r e 16: share a s m o n i t o r f o r o u t p u t c u r r e n t crane aerospace & electronics power solutions m aximum flexile p ower (mfp) single utput p oint of load tecical peview: mfp00s , 3 t vdc i , a mp, dc/dc cvete page 17 of 19 www.craneae.com/interpoint technical preview: contains preliminary information MFP0507S technical preview rev d - 2010.11.18 share voltage (v) 5.0 output current (a) vout = 2.0 1.0 vout = vout = vout = share as monitor for output current 0.50 2.0 1.5 1.0 2.5 0 4.0 3.0 0
s c r e e n i n g t a b l e 1: e l e m e n t e v a l u a t i o n crane aerospace & electronics power solutions m aximum flexible p ower (mfp) single output p oint of load technical preview: MFP0507S , 3 to 6 vdc i n, 7 a mp, dc/dc converter page 18 of 19 www.craneae.com/interpoint technical preview: contains preliminary information MFP0507S technical preview rev d - 2010.11.18 mil-prf-38534 e l e m e n t e v a l u a t i o n component-level test performed /s t and /wt non-qml 1 /883 and /h cl ass h qml /k cl ass k qml m/s 2 p 3 m/s 2 p 3 m/s 2 p 3 element electrical n n n n n element visual n n n n internal visual n n temperature cycling n n constant acceleration n n interim electrical n burn-in n post burn-in electrical n steady state life n voltage conditioning aging n visual inspection n final electrical n n n n wire bond evaluation n n n n sem n slam?/c-sam: input capacitors only addl test, not req. by h or k n n notes: 1. non-qml products do not meet all of the requirements of mil-prf-38534. 2. m/s = active components (microcircuit and semiconductor die) 3. p = passive components definitions: element evaluation: component testing/screening per mil-std-883 as determined by mil-prf-38534 sem: scanning electron microscopy slam?: scanning laser acoustic microscopy c-sam: c - mode scanning acoustic microscopy
c l a s s h a n d k, mil-prf-38534 e n v i r o n m e n t a l s c r e e n i n g non-qml 1 qml 2 cl ass h cl ass k test performed /st /wt /883 /hp /hr /kp /kr /kf non-destruct bond pull, method 2023 n n n n n pre-cap inspection, method 2017, 2032 n n n n n n n n temperature cycle (10 times) method 1010, cond. c, -55c to +150c, ambient n n n n n n n constant acceleration method 2001, 3000 g (qual 5000 g) n n n n n n n pind, test method 2020, cond. a n ? ? ? n 3 ? ? ? n 3 ? ? ? n 3 n n n pre burn-in test, group a, subgroups 1 and 4 n n n n n n burn-in method 1015, +125c case, typical 4 96 hours n 160 hours n n n 2 x 160 hours (includes mid-bi test) n n n final electrical test, mil-prf-38534, group a, subgroups 1 and 4: +25c case n subgroups 1 through 6, -70c, +25c, +150c case n subgroups 1 through 6, -55c, +25c, +125c case n n n n n n hermeticity test gross leak, dip (1 x 10 -3 ) n n gross leak, method 1014, cond. c n n n n n n fine leak, method 1014, cond. a n n n n n n radiography, method 2012 n n n post radiography electrical test, +25c case ? ? ? n 3 ? ? ? n 3 ? ? ? n 3 final visual inspection, method 2009 n n n n n n n n rha p: 30 krad(si) total dose 5 n n rha r: 100 krad(si) total dose 5 n n rha f: 300 krad(si) total dose 6 n see let 85 mev-cm 2 /mg n n n n n test methods are referenced to mil-std-883 as determined by mil-prf-38534. notes: 1. /st (standard) and /wt (wide temperature) are non-qml products may not meet all of the requirements of mil-prf-38534. 2. all processes are qmp qualified and performed by qmp qualified operators. 3. not required by dscc but performed to assure product quality. 4. burn-in temperature designed to bring the case temperature to +125c minimum. 5. includes low dose rate to the rated total dose (tid) 6. ldr to 100k tid. s c r e e n i n g t a b l e 2: e n v i r o n m e n t a l s c r e e n i n g rha options are available on request. formal classification and jurisdiction are pending. crane aerospace & electronics power solutions mfp series single, MFP0507S technical preview rev d - 2010.11.18. this technical preview contains preliminary information. interpoint reserves the right to make changes in products or specifications without notice. mfp series is a trademark of interpoint. copyright ? 2010 interpoint corporation. all rights reserved. www.craneae.com/interpoint page 19 of 19 m aximum flexible p ower (mfp) single output p oint of load technical preview: MFP0507S , 3 to 6 vdc i n, 7 a mp, dc/dc converter

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