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advance data sheet may 1999 jaw050a and jaw075a power modules: dc-dc converters; 36 to 75 vdc input, 5 vdc output; 50 w to 75 w the jaw series power modules use surface-mount technol- ogy and deliver ef?ient and compact dc-dc conversion. applications n distributed power architectures options n heat sinks available for extended operation n choice of remote on/off logic con?uration features n small size: 61.0 mm x 57.9 mm x 12.7 mm (2.40 in. x 2.28 in. x 0.50 in.) n high power density n high ef?iency: 84% typical n low output noise n constant frequency n industry-standard pinout n metal case n 2:1 input voltage range n overtemperature protection n remote sense n remote on/off n adjustable output voltage n overvoltage and overcurrent protection n case ground pin n iso9001 and iso14001 certi?d manufacturing facilities n ul * 1950 recognized, csa ? c22.2 no. 950-95 certi?d, vde 0805 (en60950, iec950) licensed n ce mark meets 73/23/eec and 93/68/eec directives description the jaw050a and jaw075a power modules are dc-dc converters that operate over an input voltage range of 36 vdc to 75 vdc and provide a regulated dc output. the outputs are fully isolated from the inputs, allowing versatile polarity con?urations and grounding connections. the modules have maximum power ratings from 50 w to 75 w at a typical full-load ef?iency of 84%. the sealed modules offer a metal baseplate for improved thermal performance. threaded-through holes are provided to allow easy mounting or addition of a heat sink for high-temperature applications. the standard feature set includes remote sensing, output trim, and remote on/off for convenient ?xibility in distributed power applications. * ul is a registered trademark of underwriters laboratories, inc. ? csa is a registered trademark of canadian standards assn. this product is intended for integration into end-use equipment. all the required procedures for ce marking of end-use equipme nt should be followed. (the ce mark is placed on selected products.)
2 lucent technologies inc. advance data sheet may 1999 dc-dc converters; 36 vdc to 75 vdc input, 5 vdc output; 50 w to 75 w jaw050a and jaw075a power modules: absolute maximum ratings stresses in excess of the absolute maximum ratings can cause permanent damage to the device. these are abso- lute stress ratings only. functional operation of the device is not implied at these or any other conditions in excess of those given in the operations sections of the data sheet. exposure to absolute maximum ratings for extended periods can adversely affect device reliability. electrical speci?ations unless otherwise indicated, speci?ations apply over all operating input voltage, resistive load, and temperature conditions. table 1. input speci?ations fusing considerations caution: this power module is not internally fused. an input line fuse must always be used. this encapsulated power module can be used in a wide variety of applications, ranging from simple stand-alone operation to an integrated part of a sophisticated power architecture. to preserve maximum ?xibility, internal fus- ing is not included; however, to achieve maximum safety and system protection, always use an input line fuse. the safety agencies require a normal-blow fuse with a maximum rating of 6 a (see safety considerations section). based on the information provided in this data sheet on inrush energy and maximum dc input current, the same type of fuse with a lower rating can be used. refer to the fuse manufacturers data for further information. parameter symbol min max unit input voltage: continuous transient (100 ms) v i v i, trans 80 100 vdc v operating case temperature (see thermal considerations section.) t c ?0 100 c storage temperature t stg ?5 125 c i/o isolation voltage 1500 vdc parameter symbol min typ max unit operating input voltage v i 36 48 75 vdc maximum input current (v i = 0 v to 75 v; i o = i o, max ): JAW050A1 (see figure 1.) jaw075a1 (see figure 2.) i i, max i i, max 3.0 3.5 a a inrush transient i 2 t 1.0 a 2 s input re?cted-ripple current, peak-to-peak (5 hz to 20 mhz, 12 m h source impedance; see figure 9.) 5 map-p input ripple rejection (120 hz) 60 db
lucent technologies inc. 3 advance data sheet may 1999 dc-dc converters; 36 vdc to 75 vdc input, 5 vdc output; 50 w to 75 w jaw050a and jaw075a power modules: electrical speci?ations (continued) table 2. output speci?ations * please consult your sales representative or the factory. ? these are manufacturing test limits. in some situations, results may differ. table 3. isolation speci?ations parameter device symbol min typ max unit output voltage set point (v i = 48 v; i o = i o, max ; t c = 25 c) all v o, set 4.92 5.0 5.08 vdc output voltage (over all operating input voltage, resistive load, and temperature conditions until end of life. see figure 11.) all v o 4.85 5.15 vdc output regulation: line (v i = 36 v to 75 v) load (i o = i o, min to i o, max ) temperature (t c = ?0 c to +100 c) all all all 0.01 0.05 15 0.1 0.2 50 %v o %v o mv output ripple and noise voltage (see figure 10.): rms peak-to-peak (5 hz to 20 mhz) all all 40 150 mvrms mvp-p external load capacitance all 0 * m f output current (at i o < i o, min , the modules may exceed output ripple speci?ations.) JAW050A1 jaw075a1 i o i o 0.5 0.5 10 15 a a output current-limit inception (v o = 90% of v o, nom ) JAW050A1 jaw075a1 i o, cli i o, cli 12.0 18.0 14 ? 21 ? a a output short-circuit current (v o = 250 mv) all 170 %i o, max ef?iency (v i = 48 v; i o = i o, max ; t c = 70 c) JAW050A1 jaw075a1 h h 84 84 % % switching frequency all 320 khz dynamic response ( d i o / d t = 1 a/10 m s, v i = 48 v, t c = 25 c; tested without any load capacitance.): load change from i o = 50% to 75% of i o, max : peak deviation settling time (v o < 10% of peak deviation) load change from i o = 50% to 25% of i o, max : peak deviation settling time (v o < 10% of peak deviation) all all all all 5 300 5 300 %v o, set m s %v o, set m s parameter min typ max unit isolation capacitance 2500 pf isolation resistance 10 m w
4 lucent technologies inc. advance data sheet may 1999 dc-dc converters; 36 vdc to 75 vdc input, 5 vdc output; 50 w to 75 w jaw050a and jaw075a power modules: general speci?ations feature speci?ations unless otherwise indicated, speci?ations apply over all operating input voltage, resistive load, and temperature conditions. see feature descriptions for additional information. * these are manufacturing test limits. in some situations, results may differ. parameter min typ max unit calculated mtbf (i o = 80% of i o, max ; t c = 40 c) 3,000,000 hours weight 100 (3.5) g (oz.) parameter symbol min typ max unit remote on/off signal interface (v i = 0 v to 75 v; open collector or equivalent compatible; signal referenced to v i (? terminal; see figure 12 and feature descriptions.): jawxxxa1 preferred logic: logic low?odule on logic high?odule off jawxxxa optional logic: logic low?odule off logic high?odule on logic low: at i on/off = 1.0 ma at v on/off = 0.0 v logic high: at i on/off = 0.0 m a leakage current turn-on time (see figure 8.) (i o = 80% of i o, max ; v o within 1% of steady state) v on/off i on/off v on/off i on/off 0 40 1.2 1.0 15 50 80 v ma v m a ms output voltage adjustment (see feature descriptions.): output voltage remote-sense range output voltage set-point adjustment range (trim) 60 0.5 110 v %v o, nom output overvoltage protection (shutdown) v o, sd 5.9* 6.0 7.0* v overtemperature protection (shutdown) t c 105 c
advance data sheet may 1999 lucent technologies inc. 5 dc-dc converters; 36 vdc to 75 vdc input, 5 vdc output; 50 w to 75 w jaw050a and jaw075a power modules: characteristic curves the following ?ures provide typical characteristics for the power modules. the ?ures are identical for both on/off con?urations. 8-2113(c) figure 1. typical JAW050A1 input characteristics at room temperature 8-1896(c) figure 2. typical jaw075a1 input characteristics at room temperature 8-2110(c) figure 3. typical JAW050A1 converter ef?iency vs. output current at room temperature 8-1925(c) figure 4. typical jaw075a1 converter ef?iency vs. output current at room temperature 5 10152025 70 0.0 input voltage, v i ( v ) 1.2 1.0 1.4 1.8 75 0 1.6 0.8 0.2 i o = 10 a i o = 5 a i o = 0.5 a 0.6 0.4 35 40 45 45 55 60 65 30 input current, i i (a) 25 15 30 20 50 10 40 45 55 input voltage, v i ( v ) 0.5 7 5 5 60 65 2.5 3.0 35 i o = 15 a 0 2.0 1.5 1.0 0.0 70 i o = 7.5 a i o = 1.5 a input current, i i (a) 45678 76 82 80 79 81 efficiency, (%) 84 10 3 83 78 9 77 75 74 v i = 36 v v i = 55 v v i = 75 v output current, i o (a) 515 75 81 82 83 84 85 output current, i o (a) 80 79 78 77 76 6 7 8 9 10 11 12 13 14 34 v i = 55 v v i = 75 v v i = 36 v efficiency, (%)
6 lucent technologies inc. advance data sheet may 1999 dc-dc converters; 36 vdc to 75 vdc input, 5 vdc output; 50 w to 75 w jaw050a and jaw075a power modules: characteristic curves (continued) 8-1968(c) figure 5. typical jaw075a1 output ripple voltage at room temperature and 48 vdc input 8-1890(c) note: tested without any load capacitance. figure 6. typical jaw075a1 transient response to step increase in load from 50% to 75% of full load at room temperature and 48 vdc input (waveform averaged to eliminate ripple component.) 8-1928(c) note: tested without any load capacitance. figure 7. typical jaw075a1 transient response to step decrease in load from 50% to 25% of full load at room temperature and 48 vdc input (waveform averaged to eliminate ripple component.) 8-1892(c) note: tested without any load capacitance. figure 8. jaw075a1 typical start-up from remote on/off; i o = i o, max time, t ( 5 s/div ) output voltage, v o (v) (50 mv/div) i o = 1.0 a i o = 7.5 a i o = 15 a time, t (200 ?/div) output voltage, v o (v) (100 mv/div) output current, i o (a) (1 a/div) 7.5 time, t ( 200 ms/div ) 3.7 a output voltage, v o (v) (100 mv/div) output current, i o (a) (1 a/div) time, t (5 ms/div) output voltage, v o (v) (1 v/div) 0 remote on/off, v on/off (v)
advance data sheet may 1999 lucent technologies inc. 7 dc-dc converters; 36 vdc to 75 vdc input, 5 vdc output; 50 w to 75 w jaw050a and jaw075a power modules: test con?urations 8-203(c).l note: measure input re?cted-ripple current with a simulated source inductance (l test ) of 12 m h. capacitor c s offsets possible bat- tery impedance. measure current as shown above. figure 9. input re?cted-ripple test setup 8-513(c).d note: use a 1.0 m f ceramic capacitor and a 10 m f aluminum or tan- talum capacitor. scope measurement should be made using a bnc socket. position the load between 51 mm and 76 mm (2 in. and 3 in.) from the module. figure 10. peak-to-peak output noise measurement test setup 8-749(c) note: all measurements are taken at the module terminals. when socketing, place kelvin connections at module terminals to avoid measurement errors due to socket contact resistance. figure 11. output voltage and ef?iency measurement test setup 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 power mod- ule. for the test con?uration in figure 9, a 33 m f elec- trolytic capacitor (esr < 0.7 w at 100 khz) mounted close to the power module helps ensure stability of the unit. for other highly inductive source impedances, consult the factory for further application guidelines. safety considerations for safety-agency approval of the system in which the power module is used, the power module must be installed in compliance with the spacing and separation requirements of the end-use safety agency standard, i.e., ul 1950, csa c22.2 no. 950-95, and vde 0805 (en60950, iec950). if the input source is non-selv (elv or a hazardous voltage greater than 60 vdc and less than or equal to 75 vdc), for the module's output to be considered meeting the requirements of safety extra-low voltage (selv), all of the following must be true: n the input source is to be provided with reinforced insulation from any other hazardous voltages, includ- ing the ac mains; and n one v i pin and one v o pin are to be grounded or both the input and output pins are to be kept ?ating; and n the input pins of the module are not operator acces- sible; and n another selv reliability test is conducted on the whole system, as required by the safety agencies, on the combination of supply source and the subject module to verify that under a single fault, hazardous voltages do not appear at the module's output. note: do not ground either of the input pins of the module without grounding one of the output pins. this may allow a non-selv voltage to appear between the output pins and ground. 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 maxi- mum 6 a normal-blow fuse in the ungrounded lead. to oscilloscope 12 ? v i (+) v i (? current probe l test battery c s 220 ? esr < 0.1 w @ 20 c, 100 khz 33 ? esr < 0.7 w @ 100 khz v o (+) v o (? 1.0 ? resistive load scope copper strip 10 ? v i (+) i i i o supply contact resistance contact and distribution losses load sense(+) v i (? v o (+) v o (? sense(? h v o (+) v o (? [] i o v i (+) v i (? [] i i ------------------------------------------------ ? ?? x 100 =%
8 lucent technologies inc. advance data sheet may 1999 dc-dc converters; 36 vdc to 75 vdc input, 5 vdc output; 50 w to 75 w jaw050a and jaw075a power modules: feature descriptions overcurrent protection to provide protection in a fault (output overload) condi- tion, the unit is equipped with internal current-limiting circuitry and can endure an overcurrent condition indef- initely. at the point of current-limit inception, the unit shifts from voltage control to current control. if the output volt- age is pulled very low during a severe fault, the current- limit circuit can exhibit either foldback or tailout charac- teristics (output current decrease or increase). the unit will try to restart after an overcurrent shut down. if the output overload condition still exists when the unit restarts, it will shut down again. this operation will continue inde?itely until the overcurrent condition is corrected. remote on/off two remote on/off options are available. positive logic remote on/off turns the module on during a logic-high voltage on the on/off pin, and off during a logic low. negative logic remote on/off turns the module off dur- ing a logic high and on during a logic low. negative logic, device code suf? ?, is the factory-preferred con?uration. to turn the power module on and off, the user must supply a switch to control the voltage between the on/off terminal and the v i (? terminal (v on/off ). the switch can be an open collector or equivalent (see figure 12). a logic low is v on/off = 0 v to 1.2 v. the maximum i on/off during a logic low is 1 ma. the switch should maintain a logic-low voltage while sinking 1 ma. during a logic high, the maximum v on/off generated by the power module is 15 v. the maximum allowable leakage current of the switch at v on/off = 15 v is 50 m a. if not using the remote on/off feature, do one of the following: n for negative logic, short on/off pin to v i (?. n for positive logic, leave on/off pin open. 8-720(c).c figure 12. remote on/off implementation remote sense remote sense minimizes the effects of distribution losses by regulating the voltage at the remote-sense connections. the voltage between the remote-sense pins and the output terminals must not exceed the out- put voltage sense range given in the feature speci?a- tions table, i.e.: [v o (+) ?v o (?] ?[sense(+) ?sense(?] 0.5 v the voltage between the v o (+) and v o (? terminals must not exceed the minimum output overvoltage pro- tection voltage as indicated in the feature speci?a- tions table. this limit includes any increase in voltage due to remote-sense compensation and output voltage set-point adjustment (trim). see figure 13. if not using the remote-sense feature to regulate the output at the point of load, then connect sense(+) to v o (+) and sense(? to v o (? at the module. 8-651(c).m figure 13. effective circuit con?uration for single-module remote-sense operation sense(+) v o (+) sense(? v o (? v i (? + i on/off on/off v i (+) load v on/off v o (+) sense(+) sense(? v o (? v i (+) v i (? i o load contact and distribution losses supply i i contact resistance
lucent technologies inc. 9 advance data sheet may 1999 dc-dc converters; 36 vdc to 75 vdc input, 5 vdc output; 50 w to 75 w jaw050a and jaw075a power modules: feature descriptions (continued) output voltage set-point adjustment (trim) output voltage trim allows the user to increase or decrease the output voltage set point of a module. this is accomplished by connecting an external resistor between the trim pin and either the sense(+) or sense(? pins. the trim resistor should be positioned close to the module. if not using the trim feature, leave the trim pin open. with an external resistor between the trim and sense(? pins (r adj-down ), the output voltage set point (v o, adj ) decreases (see figure 14). the following equa- tion determines the required external-resistor value to obtain a percentage output voltage change of d %. the test results for this con?uration are displayed in figure 15. this ?ure applies to all output voltages. with an external resistor connected between the trim and sense(+) pins (r adj-up ), the output voltage set point (v o, adj ) increases (see figure 16). the following equation determines the required exter- nal-resistor value to obtain a percentage output voltage change of d %. the test results for this con?uration are displayed in figure 17. the voltage between the v o (+) and v o (? terminals must not exceed the minimum output overvoltage pro- tection voltage as indicated in the feature speci?a- tions table. this limit includes any increase in voltage due to remote-sense compensation and output voltage set-point adjustment (trim). see figure 13. 8-748(c).b figure 14. circuit con?uration to decrease output voltage 8-1783(c) figure 15. resistor selection for decreased output voltage 8-715(c).b figure 16. circuit con?uration to increase output voltage 8-1784(c) figure 17. resistor selection for increased output voltage r adj-down 1000 d % ------------ -11 ? ?? k w = r adj-up v o nom , () 1 d % 100 ------- - + () 1.225 1.225 d % ------------------------------------------------------------------------- - 1000 11 ? ? ? ?? k w = v i (+) v i (? on/off case v o (+) v o (? sense(+) trim sense(? r adj-down r load 010203040 10m percent change in output voltage ( d % ) adjustment resistor value ( w ) 1m 100k 10k v i (+) v i (? on/off case v o (+) v o (? sense(+) trim sense(? r adj-up r load 12 910 100m percent change in output voltage ( d %) adjustment resistor value ( w ) 10m 1m 100k 345678 0
10 lucent technologies inc. advance data sheet may 1999 dc-dc converters; 36 vdc to 75 vdc input, 5 vdc output; 50 w to 75 w jaw050a and jaw075a power modules: feature descriptions (continued) output overvoltage protection the output overvoltage protection consists of circuitry that monitors the voltage on the output terminals. if the voltage on the output terminals exceeds the overvolt- age protection threshold, then the module will shut down and try to restart. the unit will continue in this condition until the cause of the overvoltage condition is removed. overtemperature protection these modules feature an overtemperature protection circuit to safeguard against thermal damage. the cir- cuit shuts down when the maximum case temperature is exceeded. the module will automatically restart when the case temperature cools suf?iently. thermal considerations introduction the power modules operate in a variety of thermal environments; however, suf?ient cooling should be provided to help ensure reliable operation of the unit. heat-dissipating components inside the unit are ther- mally coupled to the case. heat is removed by conduc- tion, convection, and radiation to the surrounding environment. proper cooling can be veri?d by mea- suring the case temperature. peak temperature (t c ) occurs at the position indicated in figure 18. 8-716(c).h note: top view, pin locations are for reference only. measurements shown in millimeters and (inches). figure 18. case temperature measurement location the temperature at this location should not exceed 100 c. the output power of the module should not exceed the rated power for the module as listed in the ordering information table. although the maximum case temperature of the power modules is 100 c, you can limit this temperature to a lower value for extremely high reliability. heat transfer without heat sinks increasing air?w over the module enhances the heat transfer via convection. figures 21 and 22 show the maximum power that can be dissipated by the module without exceeding the maximum case temperature ver- sus local ambient temperature (t a ) for natural convec- tion through 4 m/s (800 ft./min.). note that the thermal performance is orientation dependent. longitudinal ori- entation occurs when the long direction of the module is parallel to the air?w, whereas transverse orientation occurs when the short direction of the module is paral- lel to the air?w. note that the natural convection condition was mea- sured at 0.05 m/s to 0.1 m/s (10 ft./min. to 20 ft./min.); however, systems in which these power modules may be used typically generate natural convection air?w rates of 0.3 m/s (60 ft./min.) due to other heat-dissipat- ing components in the system. the use of figure 21 is shown in the following example. example what is the minimum air?w necessary for a jaw075a1 operating at v i = 55 v, an output current of 15 a, longitudinal orientation, and a maximum ambient temperature of 55 c? solution given: v i = 55 v i o = 15 a t a = 55 c determine p d (use figure 20.): p d = 14 w determine air?w (v) (use figure 21.): v = 2.3 m/s (460 ft./min.) measure case temperature here v i (? on/off case +sen trim ?en v i (+) v o (? v o (+) 30.5 (1.20) 29.0 (1.14)
lucent technologies inc. 11 advance data sheet may 1999 dc-dc converters; 36 vdc to 75 vdc input, 5 vdc output; 50 w to 75 w jaw050a and jaw075a power modules: thermal considerations (continued) heat transfer without heat sinks (continued) 8-2112(c).a figure 19. JAW050A1 power dissipation vs. output current 8-1897(c) figure 20. jaw075a1 power dissipation vs. output current 8-2465(c) figure 21. forced convection power derating with no heat sink; longitudinal orientation 8-2466(c) figure 22. forced convection power derating with no heat sink; transverse orientation 45 6 78 1 0 19 23 0 5 10 8 12 9 11 7 6 power dissipation, p d (w) 4 3 output current, i o (a) v i = 75 v v i = 55 v v i = 36 v 6 4 7 5 11 39 10 12 5 output current, i o (a) 9 1 5 2 13 14 13 14 8 1 12 11 10 8 7 6 4 v i = 75 v v i = 55 v v i = 36 v 15 16 power dissipation, p d (w) 10 30 50 70 60 80 0 12 local ambient temperature, t a ( c ) 8 6 10 90 16 100 0 14 4 2 18 20 20 40 1.0 m/s (200 ft./min.) 2.0 m/s (400 ft./min.) 3.0 m/s (600 ft./min.) 4.0 m/s (800 ft./min.) 0.1 m/s (20 ft./min.) power dissipation, p d (w) 10 30 50 70 60 80 0 12 local ambient temperature, t a ( c ) 8 6 10 90 16 100 0 14 4 2 18 20 20 40 1.0 m/s (200 ft./min.) 2.0 m/s (400 ft./min.) 3.0 m/s (600 ft./min) 4.0 m/s (800 ft./min.) 0.1 m/s (20 ft./min.) power dissipation, p d (w)
12 lucent technologies inc. advance data sheet may 1999 dc-dc converters; 36 vdc to 75 vdc input, 5 vdc output; 50 w to 75 w jaw050a and jaw075a power modules: thermal considerations (continued) heat transfer with heat sinks the power modules have through-threaded, m3 x 0.5 mounting holes, which enable heat sinks or cold plates to attach to the module. the mounting torque must not exceed 0.56 n-m (5 in.-lb.). thermal derating with heat sinks is expressed by using the overall thermal resistance of the module. total mod- ule thermal resistance ( q ca) is de?ed as the maximum case temperature rise ( d t c, max ) divided by the module power dissipation (p d ): the location to measure case temperature (t c ) is shown in figure 18. case-to-ambient thermal resis- tance vs. air?w is shown, for various heat sink con?- urations and heights, in figures 23 and 24. these curves were obtained by experimental testing of heat sinks, which are offered in the product catalog. 8-2164(c).a figure 23. case-to-ambient thermal resistance curves; longitudinal orientation 8-2165(c).a figure 24. case-to-ambient thermal resistance curves; transverse orientation these measured resistances are from heat transfer from the sides and bottom of the module as well as the top side with the attached heat sink; therefore, the case-to-ambient thermal resistances shown are gener- ally lower than the resistance of the heat sink by itself. the module used to collect the data in figures 23 and 24 had a thermal-conductive dry pad between the case and the heat sink to minimize contact resistance. the use of figure 23 is shown in the following example. example if an 82 c case temperature is desired, what is the minimum air?w necessary? assume the jaw075a1 module is operating at v i = 55 v, an output current of 15 a, longitudinal orientation, maximum ambient air temperature of 40 c, and the heat sink is 1/4 inch. q ca d t c max , p d --------------------- t c t a () p d ------------------------ == 0.5 (100) 1.0 (200) 1.5 (300) 2.0 (400) 2.5 (500) 0 1 air velocity, m/s (ft./min.) 9 3.0 (600) 0 2 3 4 5 6 7 8 1 1/2 in. heat sink 1 in. heat sink no heat sink case-to-ambient thermal resistance, ca ( c/w) 1/2 in. heat sink 1/4 in. heat sink 0.5 (100) 1.0 (200) 1.5 (300) 2.0 (400) 2.5 (500) 0 1 air velocity, m/s (ft./min.) 8 3.0 (600) 0 2 3 4 5 6 7 1 1/2 in. heat sink 1 in. heat sink no heat sink 1/2 in. heat sink 1/4 in. heat sink case-to-ambient thermal resistance, ca ( c/w)
lucent technologies inc. 13 advance data sheet may 1999 dc-dc converters; 36 vdc to 75 vdc input, 5 vdc output; 50 w to 75 w jaw050a and jaw075a power modules: thermal considerations (continued) heat transfer with heat sinks (continued) solution given: v i = 55 v i o = 15 a t a = 40 c t c = 82 c heat sink = 1/4 in. determine p d by using figure 20: p d = 14 w then solve the following equation: use figure 23 to determine air velocity for the 1/4 inch heat sink. the minimum air?w necessary for this module is 1.1 m/s (220 ft./min.). custom heat sinks a more detailed model can be used to determine the required thermal resistance of a heat sink to provide necessary cooling. the total module resistance can be separated into a resistance from case-to-sink ( q cs) and sink-to-ambient ( q sa) as shown in figure 25. 8-1304(c) figure 25. resistance from case-to-sink and sink-to-ambient for a managed interface using thermal grease or foils, a value of q cs = 0.1 c/w to 0.3 c/w is typical. the solution for heat sink resistance is: this equation assumes that all dissipated power must be shed by the heat sink. depending on the user- de?ed application environment, a more accurate model, including heat transfer from the sides and bot- tom of the module, can be used. this equation provides a conservative estimate for such instances. solder, cleaning, and drying considerations post solder cleaning is usually the ?al circuit-board assembly process prior to electrical board testing. the result of inadequate circuit-board cleaning and drying can affect both the reliability of a power module and the testability of the ?ished circuit-board assembly. for guidance on appropriate soldering, cleaning, and dry- ing procedures, refer to lucent technologies board- mounted power modules: soldering and cleaning application note (ap97-021eps). emc considerations for assistance with designing for emc compliance, refer to the fltr100v10 filter module data sheet (ds98-152eps). layout considerations copper paths must not be routed beneath the power module standoffs. for additional layout guidelines, refer to the fltr100v10 filter module data sheet (ds98- 152eps). q ca t c t a () p d ------------------------ = q ca 82 40 () 14 ----------------------- - = q ca 3.0 c/w = p d t c t s t a cs sa q sa t c t a () p d ------------------------ q cs =
14 lucent technologies inc. advance data sheet may 1999 dc-dc converters; 36 vdc to 75 vdc input, 5 vdc output; 50 w to 75 w jaw050a and jaw075a power modules: outline diagram dimensions are in millimeters and (inches). tolerances: x.x mm 0.5 mm (x.xx in. 0.02 in.) x.xx mm 0.25 mm (x.xxx in. 0.010 in.) top view side view bottom view 8-716(c).i * side label includes lucent logo, product designation, safety agency markings, input/output voltage and current ratings, and b ar code. 57.9 (2.28) 61.0 (2.40) 0.51 (0.020) 12.7 (0.50) 2.06 (0.081) dia solder-plated brass, 2 places (?output and + output) 1.02 (0.040) dia solder-plated brass, 7 places side label* 4.1 (0.16) min 48.3 (1.90) 10.16 (0.400) mounting inserts m3 x 0.5 through, 4 places 10.16 (0.400) 5.1 (0.20) 12.7 (0.50) 4.8 (0.19) 48.26 (1.900) standoff, 4 places 7.1 (0.28) 7 . 1 (0.28) v o (? ?en trim +sen case on/off v i (+) v i (? v o (+) 17.78 (0.700) 25.40 (1.000) 35.56 (1.400) 25.40 (1.000) 50.8 (2.00) 35.56 (1.400)
lucent technologies inc. 15 advance data sheet may 1999 dc-dc converters; 36 vdc to 75 vdc input, 5 vdc output; 50 w to 75 w jaw050a and jaw075a power modules: recommended hole pattern component-side footprint. dimensions are in millimeters and (inches). 8-716(c).i ordering information table 4. device codes input voltage output voltage output power remote on/ off logic device code comcode 48 v 5.0 v 50 w negative JAW050A1 108209974 48 v 5.0 v 75 w negative jaw075a1 108064353 48 v 5.0 v 50 w positive jaw050a tbd 48 v 5.0 v 75 w positive jaw075a tbd 10.16 (0.400) 10.16 (0.400) 25.40 (1.000) 35.56 (1.400) 12.7 (0.50) 4.8 (0.19) module outline 5.1 (0.20) 48.26 (1.900) terminals 48.3 (1.90) 61.0 (2.40) v o (? v i (? ?en trim +sen case on/off v i (+) v o (+) 57.9 (2.28) 50.8 (2.00) 17.78 (0.700) 25.40 (1.000) 35.56 (1.400)
advance data sheet may 1999 dc-dc converters; 36 vdc to 75 vdc input, 5 vdc output; 50 w to 75 w jaw050a and jaw075a power modules: copyright ?1999 lucent technologies inc. all rights reserved printed in u.s.a. may 1999 ds97-472eps printed on recycled paper for additional information, contact your lucent technologies account manager or the following: power systems unit: network products group, lucent technologies inc., 3000 skyline drive, mesquite, tx 75149, usa +1-800-526-7819 (outside u.s.a.: +1-972-284-2626 , fax +1-972-284-2900) (product-related questions or technical assistance) internet: http://www.lucent.com/networks/power e-mail: techsupport@lucent.com asia pacific: lucent technologies singapore pte. ltd., 750a chai chee road #05-01, chai chee industrial park, singapore 469001 tel. (65) 240 8041 , fax (65) 240 8053 china: lucent technologies (china) co. ltd., scitech place no. 22 jian guo man wai avenue, beijing 100004, prc tel. (86) 10-6522 5566 ext. 4187 , fax (86) 10-6512 3694 japan: lucent technologies japan ltd., mori building no. 25, 4-30, roppongi 1-chome, minato-ku, tokyo 106-8508, japan tel. (81) 3 5561 3000 , fax (81) 3 5561 4387 latin america: lucent technologies inc., room 416, 2333 ponce de leon blvd., coral gables, fl 33134, usa tel. +1-305-569-4722 , fax +1-305-569-3820 europe: data requests: dataline: tel. (44) 1189 324 299 , fax (44) 1189 328 148 technical inquiries:germany: (49) 89 95086 0 (munich), united kingdom: (44) 1344 865 900 (ascot), france: (33) 1 40 83 68 00 (paris), sweden: (46) 8 594 607 00 (stockholm), finland: (358) 9 4354 2800 (helsinki), italy: (39) 02 6608131 (milan), spain: (34) 91 807 1441 (madrid) lucent technologies inc. reserves the right to make changes to the product(s) or information contained herein without notice. n o liability is assumed as a result of their use or application. no rights under any patent accompany the sale of any such product(s) or information. ordering information (continued) table 5. device accessories accessory comcode 1/4 in. transverse kit (heat sink, thermal pad, and screws) 407243989 1/4 in. longitudinal kit (heat sink, thermal pad, and screws) 407243997 1/2 in. transverse kit (heat sink, thermal pad, and screws) 407244706 1/2 in. longitudinal kit (heat sink, thermal pad, and screws) 407244714 1 in. transverse kit (heat sink, thermal pad, and screws) 407244722 1 in. longitudinal kit (heat sink, thermal pad, and screws) 407244730 1 1/2 in. transverse kit (heat sink, thermal pad, and screws) 407244748 1 1/2 in. longitudinal kit (heat sink, thermal pad, and screws) 407244755 d000-c.cvs figure 26. longitudinal heat sink 57.9 (2.28) 61 (2.4) 1 in. 1 1/2 in. 1/4 in. 1/2 in. d000-d.cvs figure 27. transverse heat sink 1 in. 1 1/2 in. 61 (2.4) 1/4 in. 1/2 in. 57.9 (2.28)

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