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bcm ? bus converter rev 1.1 vicorpower.com page 1 of 23 09/2015 800 927.9474 bcm ? bus converter fixed ratio dc-dc converter bcm6123x60e10a5yzz s nrtl cu s c us features ? up to 150 a continuous output current ? 2208 w/in 3 power density ? 97.6% peak efficiency ? 2,250 vdc isolation ? parallel operation for multi-kw arrays ? ov, oc, uv, short circuit and thermal protection ? 6123 through-hole chip package n 2.402? x 0.990? x 0.286? (61.00 mm x 25.14 mm x 7.26 mm) typical applications ? high end computing systems ? automated test equipment ? industrial systems ? high density power supplies ? communications systems ? transportation product description the vi chip? bus converter (bcm?) is a high efficiency sine amplitude converter? (sac?), operating from a 36 to 60 vdc primary bus to deliver an isolated, ratiometric output from 6 to 10 vdc. the bcm6123x60e10a5yzz offers low noise, fast transient response, and industry leading efficiency and power density. in addition, it provides an ac impedance beyond the bandwidth of most downstream regulators, allowing input capacitance normally located at the input of a pol regulator to be located at the primary side of the bcm module. with a primary to secondary k factor of 1/6, that capacitance value can be reduced by a factor of 36x, resulting in savings of board area, material and total system cost. leveraging the thermal and density bene?ts of vicors chip packaging technology, the bcm module offers ?exible thermal management options with very low top and bottom side thermal impedances. thermally-adept chip-based power components, enable customers to achieve low cost power system solutions with previously unattainable system size, weight and efficiency attributes, quickly and predictably. product ratings v pri = 54 v (36 ? 60 v) p sec = up to 1500 w v sec = 9 v (6 ? 10 v) ( no load ) k = 1/6
bcm ? bus converter rev 1.1 vicorpower.com page 2 of 23 09/2015 800 927.9474 bcm6123x60e10a5yzz typical application bcm6123x60e10a5yzz + point of load bcm vaux en +pri ?ri +v sec ? sec sw1 v pri enable/disable switch f1 isolation boundry primary secondary gnd c pri tm pol
bcm ? bus converter rev 1.1 vicorpower.com page 3 of 23 09/2015 800 927.9474 bcm6123x60e10a5yzz pin configuration 1 2 a b c d e f g h +v pri +v sec top view 6123 chip package i -v sec 1 -v sec 1 +v sec +v sec -v sec 1 +v sec -v sec 1 +v pri j +v pri k +v pri l a b c d e f g h i j k l +v sec -v sec 2 -v sec 2 +v sec +v sec -v sec 2 +v sec -v sec 2 -v pri tm en vaux pin descriptions pin number signal name type function i1, j1, k1, l1 +v pri primary power positive primary transformer power terminal i?2 tm output temperature monitor; primary side referenced signals j?2 en input enables and disables power supply; primary side referenced signals k?2 vaux output auxilary voltage source; primary side referenced signals l?2 -v pri primary power return negative primary transformer power terminal a1, d1, e1, h1, a?2, d?2, e?2, h?2 +v sec secondary power positive secondary transformer power terminal b1, c1, f1, g1 b?2, c?2, f?2, g?2 -v sec * secondary power return negative secondary transformer power terminal *for proper operation an external low impedance connection must be made between listed -v sec 1 and -v sec 2 terminals.
bcm ? bus converter rev 1.1 vicorpower.com page 4 of 23 09/2015 800 927.9474 bcm6123x60e10a5yzz absolute maximum ratings the absolute maximum ratings below are stress ratings only. operation at or beyond these maximum ratings can cause permanent da mage to the device. parameter comments min max unit +v pri_dc to ?v pri_dc -1 80 v v pri_dc or v sec_dc slew rate (operational) 1 v/s +v sec_dc to ?v sec_dc -1 15 v tm to ?v pri_dc -0.3 4.6 v en to ?v pri_dc 5.5 v vaux to ?v pri_dc 4.6 v part ordering information standard models product function package size package mounting max primary input voltage range identifier max secondary voltage secondary output current temperature grade option bcm 6123 x 60 e 10 a5 y zz bus converter module 61 = l 23 = w t = th s = smt 60 v 36 ? 60 v 10 v no load 150 a t = -40c ? 125c m = -55c ? 125c 00 = analog ctrl 01 = pmbus ctrl 0r = reversible analog ctrl 0p = reversible pmbus ctrl product function package size package mounting max primary input voltage range identifier max secondary voltage secondary output current temperature grade option bcm 6123 t 60 e 10 a5 t 00 all products shipped in jedec standard high profile (0.400? thick) trays (jedec publication 95, design guide 4.10).
bcm ? bus converter rev 1.1 vicorpower.com page 5 of 23 09/2015 800 927.9474 bcm6123x60e10a5yzz electrical specifications specifications apply over all line and load conditions, unless otherwise noted; boldface specifications apply over the temperature range of -40c
bcm ? bus converter rev 1.1 vicorpower.com page 6 of 23 09/2015 800 927.9474 bcm6123x60e10a5yzz electrical specifications (cont.) specifications apply over all line and load conditions, unless otherwise noted; boldface specifications apply over the temperature range of -40c
bcm ? bus converter rev 1.1 vicorpower.com page 7 of 23 09/2015 800 927.9474 bcm6123x60e10a5yzz secondary output current (a) input voltage (v) i sec_out_dc i sec_out_pulse 0 50 100 150 200 36 38 41 43 46 48 50 53 55 58 60 secondary output power (w) input voltage (v) p sec_out_dc p sec_out_pulse 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 36 38 41 43 46 48 50 53 55 58 60 figure 1 ? specified thermal operating area figure 2 ? specified electrical operating area using rated r sec_hot secondary output capacitance (% rated c sec_ext_max ) secondary output current (% i sec_dc ) 0 10 20 30 40 50 60 70 80 90 100 110 0 20 40 60 80 100 primary/secondary output power (w) case temperature (c) top only at temperature leads at temperature top and leads at temperature top, leads and belly at temperature 0 200 400 600 800 1000 1200 1400 1600 1800 35 45 55 65 75 85 95 105 115 125 figure 3 ? specified primary start-up into load current and external capacitance
bcm ? bus converter rev 1.1 vicorpower.com page 8 of 23 09/2015 800 927.9474 bcm6123x60e10a5yzz signal characteristics specifications apply over all line, load conditions, unless otherwise noted; boldface specifications apply over the temperature range of -40c
bcm ? bus converter rev 1.1 vicorpower.com page 9 of 23 09/2015 800 927.9474 bcm6123x60e10a5yzz auxiliary voltage source ? the vaux pin is a standard analog i/o configured as an output from an internal c. ? vaux is internally connected to c output as internally pulled high to a 3.3 v regulator with 2% tolerance, a 1% resistor of 1.5 k
bcm ? bus converter rev 1.1 vicorpower.com page 10 of 23 09/2015 800 927.9474 bcm6123x60e10a5yzz bcm module timing diagram en tm +v pri bidir input +v sec output v pri_ d c inp u t tu r n- o n s eco nda ry o utpu t tu rn-on prim a ry i nput o v er voltage v p r i _ d c input rest a rt enable pulled low ena b l e p u lled h i g h s h o rt circ u i t ev ent p rim a r y in pu t v o l ta g e tu r n -o ff output output v aux en & v a u x interna l p u ll -u p startup over voltage enable control over current shutdown c initializ e v pri_ovlo- v pri_ovlo+ v pri_uvlo+ v c_active v nom v pri_uvlo- t sec_out_scp t pri _ uvlo+_delay t vaux t auto-restart > t pri _ uvlo+_delay
bcm ? bus converter rev 1.1 vicorpower.com page 11 of 23 09/2015 800 927.9474 bcm6123x60e10a5yzz fault sequence tm low en high vaux low powertrain stopped v ?_active < v pri_dc < v pri_uvlo+ v pri_dc > v pri_uvlo+ t pri_uvlo+_delay expired one time delay initial startup fault auto- recovery enable falling edge, or otp detected input ovlo or uvlo, output ocp, or utp detected enable falling edge, or otp detected input ovlo or uvlo, output ocp, or utp detected short circuit detected application of input voltage to v pri_dc sustained operation tm pwm en high vaux high powertrain active startup sequence tm low en high vaux low powertrain stopped standby sequence tm low en high vaux low powertrain stopped high level functional state diagram conditions that cause state transitions are shown along arrows. sub-sequence activities listed inside the state bubbles.
bcm ? bus converter rev 1.1 vicorpower.com page 12 of 23 09/2015 800 927.9474 bcm6123x60e10a5yzz application characteristics product is mounted and temperature controlled via top side cold plate, unless otherwise noted. all data presented in this secti on are collected data form primary sourced units processing power in forward direction.see associated figures for general trend data. pri to sec, power dissipation (w) primary input voltage (v) - 40? 25? 80? t top surface case : 3 4 5 6 7 8 9 10 11 12 13 14 15 36 39 41 44 47 49 52 55 57 60 case temperature (?) 36 v 54 v 60 v pri to sec, full load efficiency (%) v in : 96.0 96.5 97.0 97.5 98.0 -40 -20 0 20 40 60 80 100 pri to sec, efficiency (%) pri to sec, power dissipation secondary output current (a) 36 v 54 v 60 v v in : 0 6 12 18 24 30 36 42 48 54 80 82 84 86 88 90 92 94 96 98 0 15 30 45 60 75 90 105 120 135 150 p d figure 4 ? no load power dissipation vs. v pri_dc figure 5 ? full load efficiency vs. temperature; v pri_dc figure 6 ? efficiency and power dissipation at t case = -40c pri to sec, efficiency (%) pri to sec, power dissipation load current (a) 36 v 54 v 60 v v in : 0 6 12 18 24 30 36 42 48 54 80 82 84 86 88 90 92 94 96 98 0 15 30 45 60 75 90 105 120 135 150 p d pri to sec, efficiency (%) pri to sec, power dissipation secondary output current (a) 36 v 54 v 60 v v in : 0 6 12 18 24 30 36 42 48 54 80 82 84 86 88 90 92 94 96 98 13 25 38 50 63 75 88 100 113 125 0 p d figure 7 ? efficiency and power dissipation at t case = 25c pri to sec, output resistance (m) case temperature (c) 150 a i out : 0 1 2 3 -40-200 20406080100 figure 8 ? efficiency and power dissipation at t case = 80c figure 9 ? r sec vs. temperature; nominal v pri_dc i sec_dc = 125 a at t case = 80c
bcm ? bus converter rev 1.1 vicorpower.com page 13 of 23 09/2015 800 927.9474 bcm6123x60e10a5yzz figure 12 ? 0 a? 150 a transient response: c pri_in_ext = 2700 f, no external c sec_out_ext figure 11 ? full load ripple, 2700 f c pri_in_ext ; no external c sec_out_ext . board mounted module, scope setting : 20 mhz analog bw voltage ripple (mv pk-pk ) load current (a) 54 v v in : 0 25 50 75 100 125 150 175 200 0 15 30 45 60 75 90 105 120 135 150 figure 10 ? v sec_out_pp vs. i sec_dc ; no external c sec_out_ext . board mounted module, scope setting : 20 mhz analog bw figure 13 ? 150 a ? 0 a transient response: c pri_in_ext = 2700 f, no external c sec_out_ext figure 14 ? start up from application of v pri_dc = 54 v, 20% i out , 100% c sec_out_ext figure 15 ? start up from application of en with pre-applied v pri_dc = 54 v, 20% i sec_dc , 100% c sec_out_ext
bcm ? bus converter rev 1.1 vicorpower.com page 14 of 23 09/2015 800 927.9474 bcm6123x60e10a5yzz general characteristics specifications apply over all line, load conditions, unless otherwise noted; boldface specifications apply over the temperature range of -40c
bcm ? bus converter rev 1.1 vicorpower.com page 15 of 23 09/2015 800 927.9474 bcm6123x60e10a5yzz [1] product is not intended for reflow solder attach. general characteristics specifications apply over all line, load conditions, unless otherwise noted; boldface specifications apply over the temperature range of -40c
bcm ? bus converter rev 1.1 vicorpower.com page 16 of 23 09/2015 800 927.9474 bcm6123x60e10a5yzz current flow detection + forward i in sense sepic en cr c out1 +v sec -v sec1 +v pri -v pri en tm pwm tm en vaux differential current sensing half-bridge synchronous rectification primary stage fast current limit analog controller digital controller sepic cntrl on/off temperature sensor q04 q03 lr secondary stage q05 +v cc -v cc 3.3v linear regulator slow current limit modulator primary and secondary gate drive transformer 1.5 k q6 q01 q02 current monitor c out2 +v sec -v sec2 q07 q08 bcm module block diagram
bcm ? bus converter rev 1.1 vicorpower.com page 17 of 23 09/2015 800 927.9474 bcm6123x60e10a5yzz the sine amplitude converter (sac?) uses a high frequency resonant tank to move energy from primary to secondary and vice versa. (the resonant tank is formed by cr and leakage inductance lr in the power transformer windings as shown in the bcm module block diagram). the resonant lc tank, operated at high frequency, is amplitude modulated as a function of input voltage and output current. a small amount of capacitance embedded in the primary and secondary stages of the module is sucient for full functionality and is key to achieving high power density. the bcm6123x60e10a5yzz sac can be simpli?ed into the preceeding model. at no load: v sec = v pri ? k (1) k t t t t t sac. r e (1) k= v sec (2) v pri i t d v out td v sec = v pri ? k C i sec ? r sec (3) d i out td i sec = i pri Ci pri_q (4) k r out t t d t sac d t t r dson t t d tt moset d t d t t t. i q t t t t t sac t t d t d . t dc t tt d ddt tt ttt. a tt r sec = 0 d i pri_q = 0 a e. (3) e. (1) d t d ddt t r d t v in . t t t v pri d v sec v sec = (v pri Ci pri ? r in ) ? k (5) sttt t d e. (4) (i pri_q d = 0 a) t e. (5) d v sec = v pri ? k C i sec ? r in ? k 2 (6) + + v out c out v in v?i k + + c in i out r c out i q r out r c in 140 ma 1/6 ? i sec 1/6 ? v pri c pri_int_esr 0.75 m r sac k = 1/32 vin vout + ? v pri v sec r in sac? k = 1/6 figure 17 ? k = 1/6 sine amplitude converter with series input resistor figure 16 ? bcm module ac model c sec_int l sec_out_leads = 0.64 nh c pri_int 11.2 f 1.62 m
bcm ? bus converter rev 1.1 vicorpower.com page 18 of 23 09/2015 800 927.9474 bcm6123x60e10a5yzz this is similar in form to eq. (3), where r sec is used to represent the characteristic impedance of the sac?. however, in this case a real r on the primary side of the sac is eectively scaled by k 2 with respect to the secondary. assuming tha tr=1,the eective r as seen from the secondary side is 28 m, with k = 1/6 . a similar exercise should be performed with the additon of a capacitor or shunt impedance at the primary input to the sac. a switch in series with v pri is added to the circuit. this is depicted in figure 18. a change in v pri with the switch closed would result in a change in capacitor current according to the following equation: i c (t) = c dv pri (7) dt tttttdtv pri ttd dttddttddcit i c =i sec ? k (8) ttt e. (1) d (8) t e. (7) i sec = c ? di sec (9) k 2 dt t t t t tt dd k 2 t c d t dt t t. a k t t t t t t t d tt d t t t. t k = 16 18 c = 1 d c = 36 d t d. l d t t t d t. a t t t d d t d t t td t. t sac t t t t d t t d d d t d d d t t d t t t t t k t d. t t t t d t sac t . t d t sac t .. d t t t. a t t d t sac t t . t t t t t . s t t t t. u t t d . t t t t bcm d n d dt (p pri_nl ) dd t d t t d t d t t d. rt (r sec ) t t t bcm d dd t d. p dissipated = p pri_nl + p r sec (10) t p sec_out = p pri_in Cp dissipated = p ri_in Cp pri_nl Cp r sec (11) t t d t t t d h = p sec_out = p pri_in Cp pri_nl Cp r sec (12) p in p in = v pri ? i pri Cp pri_nl C(i sec ) 2 ? r sec v in ? i in =1 C ( p pri_nl + (i sec ) 2 ? r sec ) v pri ? i pri c s sac k = 1/32 vin vout + ? v pri v sec c sac? k = 1/6 figure 18 ? sine amplitude converter with input capacitor s
bcm ? bus converter rev 1.1 vicorpower.com page 19 of 23 09/2015 800 927.9474 bcm6123x60e10a5yzz input and output filter design a major advantage of sac? systems versus conventional pwm converters is that the transformer based sac does not require external ?ltering to function properly. the resonant lc tank, operated at extreme high frequency, is amplitude modulated as a function of input voltage and output current and eciently transfers charge through the isolation transformer. a small amount of capacitance embedded in the primary and secondary stages of the module is sucient for full functionality and is key to achieving power density. this paradigm shi requires system design to carefully evaluate external ?lters in order to: guarantee low source impedance: to take full advantage of the bcm module?s dynamic response, the impedance presented to its input terminals must be low from dc to approximately 5 mhz. the connection of the bus converter module to its power source should be implemented with minimal distribution inductance. if the interconnect inductance exceeds 100 nh, the input should be bypassed with a rc damper to retain low source impedance and stable operation. with an interconnect inductance of 200 nh, the rc damper may be as high as 1 f in series with 0.3 . a single electrolytic or equivalent low-q capacitor may be used in place of the series rc bypass. further reduce input and/or output voltage ripple without sacri?cing dynamic response: given the wide bandwidth of the module, the source response is generally the limiting factor in the overall system response. anomalies in the response of the source will appear at the output of the module multiplied by its k factor. protect the module from overvoltage transients imposed by the system that would exceed maximum ratings and induce stresses: the module primary/secondary voltage ranges shall not be exceeded. an internal overvoltage lockout function prevents operation outside of the normal operating input range. even when disabled, the powertrain is exposed to the applied voltage and power mosfets must withstand it. total load capacitance at the output of the bcm module shall not exceed the speci?ed maximum. owing to the wide bandwidth and low output impedance of the module, low-frequency bypass capacitance and signi?cant energy storage may be more densely and eciently provided by adding capacitance at the input of the module. at frequencies <500 khz the module appears as an impedance of r sec between the source and load. within this frequency range, capacitance at the input appears as eective capacitance on the output per the relationship de?ned in eq. (13). c sec_ext = c pri_ext (13) k 2 t dt t d t d t t. t cdt t cp d d t tt t t t t t t t dt t. t d t t t tt d t d. t tt t t t d t dt t tt cp 1. s t cp t tt t t t tt t t tt d t t. tt t t t t t t cp t t t t t t t t dt dd t t tt td t d t t t td t. 19 t t t vi c bcm d 6123 t t t tt d d d. i t t bcm dt pd total d t t tt td t case_top t case_bottom d t leads . t t t d spice t t t t d t . t t t t d d tt t t t t t tt. att t tt d t t d d t int C pd 1 ? 1.24 = t case_top t int C pd 2 ? 1.24 = t case_bottom t int C pd 3 ? 7 = t leads pd total = pd 1 + pd 2 + pd 3 t int t t t tt d pd 1 pd 2 d pd 3 t t t t t t d tt d d d t. + ? + ? + ? max internal temp t case_bottom (?) t leads (?) t case_top (?) power dissipation (w) thermal resistance top thermal resistance bottom thermal resistance leads + ? + ? max internal temp t case_bottom (?) t leads (?) t case_top (?) power dissipation (w) thermal resistance top thermal resistance bottom thermal resistance leads figure 19 ? top case, bottom case and leads thermal model figure 20 ? top case and leads thermal model 1.39c / w 1.40c / w 1.27c / w 1.39c / w 1.40c / w 1.27c / w
bcm ? bus converter rev 1.1 vicorpower.com page 20 of 23 09/2015 800 927.9474 bcm6123x60e10a5yzz figure 20 shows a scenario where there is no bottom side cooling. in this case, the heat ?ow path to the bottom is le open and the equations now simplify to: t int C pd 1 ? 1.24 = t case_top t int C pd 3 ? 7 = t leads pd total = pd 1 + pd 3 21 t tt d d d . i t t t t t t tt d t t t t int C pd 1 ? 1.24 = t case_top pd total = pd 1 p t tt v t t d t d t tt t t t dt t t bcm t t d dt. t t d t tt.. . ct s t t sac t d t t t t tt t d d t. t t t tt td d t t t tt t t. t t tt t t d tt dc dtt t t d (ac) d td tt (dc) t. t bcm d t td t t t d t d t t t d dd tt t t t t t t t d. s dt t td d d ddt t t pcb t d d t t t t t d. pd t pcb t d a t t d bcm d t t t t. t dt an016 u bcm b ct p a . st i d t d t t vi c d t t d. it vi c dt dd t t t d t tt tt . t td t t t t t tt ct t ( t t t bcm d) m t t ( t t t t t) at tt n t i 2 t rd 40 a ltt 456 s r ot bcm d t. o t t ttd td d t t t d t d v pri ? k. t d t t t t . tt t td t t t t tt d tt t t t. bcm 1 r 0_1 z in_eq1 z out_eq1 z out_eq2 vout z out_eqn z in_eq2 z in_eqn r 0_2 r 0_n bcm 2 bcm n load dc vin + figure 22 ? bcm module array + ? max internal temp t case_bottom (?) t leads (?) t case_top (?) power dissipation (w) thermal resistance top thermal resistance bottom thermal resistance leads figure 21 ? top case thermal model 1.39c / w 1.40c / w 1.27c / w
bcm ? bus converter rev 1.1 vicorpower.com page 21 of 23 09/2015 800 927.9474 bcm6123x60e10a5yzz bcm module through hole package mechanical drawing and recommended land pattern 25.14.38 .990.015 12.57 .495 30.50 1.201 61.00.13 2.402.005 0 00 0 top view (component side) 2.03 .080 (9) pl. 1.02 .040 (3) pl. 2.03 .080 (9) pl. 1.02 .040 (3) pl. 11.43 .450 0 27.21 1.071 (2) pl. 17.09 .673 (2) pl. 7.94 .312 (2) pl. 1.49 .058 (2) pl. 18.05 .710 (2) pl. 23.64 .931 (2) pl. 21.94 .864 (2) pl. 12.52 .493 (2) pl. 3.37 .132 (2) pl. 6.76 .266 (2) pl. 20.84 .820 (2) pl. 27.55 1.085 (2) pl. 0 11.81 .465 11.81 .465 0 0 bottom view .41 .016 (24) pl. 7.26.05 .286.002 4.17 .164 (24) pl. seating plane .05 [.002] 1.52.08 .060.003 plated thru .25 [.010] annular ring (6) pl. 2.54.08 .100.003 plated thru .38 [.015] annular ring (18) pl. 0 21.94.08 .864.003 (2) pl. 12.52.08 .493.003 (2) pl. 3.37.08 .132.003 (2) pl. 6.76.08 .266.003 (2) pl. 20.84.08 .820.003 (2) pl. 27.55.08 1.085.003 (2) pl. 27.21.08 1.071.003 (2) pl. 17.09.08 .673.003 (2) pl. 7.94.08 .312.003 (2) pl. 1.49.08 .058.003 (2) pl. 18.05.08 .710.003 (2) pl. 23.64.08 .931.003 (2) pl. 0 11.81.08 .465.003 11.81.08 .465.003 0 0 +v sec +v sec +v sec +v sec +v sec +v sec +v sec +v sec -v sec -v sec -v sec -v sec -v sec -v sec -v sec -v sec +v pri +v pri +v pri +v pri tm en vaux -v pri recommended hole pattern (component side) notes: 1- rohs compliant per cst-0001 latest revision. 2- unless specified otherwise, dimensions are mm / [inch], tolerance ? 0.127 / [0.005]
bcm ? bus converter rev 1.1 vicorpower.com page 22 of 23 09/2015 800 927.9474 bcm6123x60e10a5yzz revision history revision date description page number(s) 1.0 08/26/15 initial release n/a 1.1 09/28/15 changed pri to sec input quiescent current added certifications 5 1 & 15
bcm ? bus converter rev 1.1 vicorpower.com page 23 of 23 09/2015 800 927.9474 bcm6123x60e10a5yzz vicor?s comprehensive line of power solutions includes high density ac-dc and dc-dc modules and accessory components, fully configurable ac-dc and dc-dc power supplies, and complete custom power systems. information furnished by vicor is believed to be accurate and reliable. however, no responsibility is assumed by vicor for its use. vicor makes no representations or warranties with respect to the accuracy or completeness of the contents of this publication. vicor reserves the right to make changes to any products, specifications, and product descriptions at any time without notice. information published by vicor h as been checked and is believed to be accurate at the time it was printed; however, vicor assumes no responsibility for inaccuracies. testing and other quality controls are used to the extent vicor deems necessary to support vicor?s product warranty. except where mandated by government requirements , testing of all parameters of each product is not necessarily performed. specifications are subject to change without notice. vicor?s standard terms and conditions all sales are subject to vicor?s standard terms and conditions of sale, which are available on vicor?s webpage or upon request. product warranty in vicor?s standard terms and conditions of sale, vicor warrants that its products are free from non-conformity to its standard specifications (the ?express limited warranty?). this warranty is extended only to the original buyer for the period expiring two (2) years after t he date of shipment and is not transferable. unless otherwise expressly stated in a written sales agreement signed by a duly authorized vicor signatory, vicor disclaims all representations, liabilities, and warranties of any kind (whether arising by implication or by operation of law) with respect to the products, including, without limitation, any warranties or representations as to merchantability, fitness for particular purpose, infringement of any patent, copyright, or other intellectual property right, or any other matter. this warranty does not extend to products subjected to misuse, accident, or improper application, maintenance, or storage. vico r shall not be liable for collateral or consequential damage. vicor disclaims any and all liability arising out of the application or use of any pro duct or circuit and assumes no liability for applications assistance or buyer product design. buyers are responsible for their products and applications us ing vicor products and components. prior to using or distributing any products that include vicor components, buyers should provide adequate design, testing and operating safeguards. vicor will repair or replace defective products in accordance with its own best judgment. for service under this warranty, the buyer must contact vicor to obtain a return material authorization (rma) number and shipping instructions. products returned without prior author ization will be returned to the buyer. the buyer will pay all charges incurred in returning the product to the factory. vicor will pay all re shipment charges if the product was defective within the terms of this warranty. life support policy vicor?s products are not authorized for use as critical components in life support devices or systems without the express prior written approval of the chief executive officer and general counsel of vicor corporation. as used herein, life support devices or systems are devices which (a) are intended for surgical implant into the body, or (b) support or sustain life and wh ose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in a s ignificant injury to the user. a critical component is any component in a life support device or system whose failure to perform can be reasonably expec ted to cause the failure of the life support device or system or to affect its safety or effectiveness. per vicor terms and conditions of sale, the user of vicor products and components in life support applications assumes all risks of such use and indemnifies vicor against all liability and damag es. intellectual property notice vicor and its subsidiaries own intellectual property (including issued u.s. and pending patent applications) relating to the pr oducts described in this data sheet. no license, whether express, implied, or arising by estoppel or otherwise, to any intellectual property rights is g ranted by this document. interested parties should contact vicor's intellectual property department. the products described on this data sheet are protected by the following u.s. patents numbers: 6,911,848; 6,930,893; 6,934,166; 7,145,786; 7,782,639; 8,427,269 and for use under 6,975,098 and 6,984,965. vicor corporation 25 frontage road andover, ma, usa 01810 tel: 800-735-6200 fax: 978-475-6715 email customer service: custserv@vicorpower.com technical support: apps@vicorpower.com

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