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(888) 597-wall www.wallindustries.com 1 of 16 technical datasheet JFW24S15-1000 dc/dc converter 9-36 vdc input 15 vdc output at 1.0a applications: ? distributed power architectures ? communication equipment ? computer equipment ? test equipment options: ? positive remote on/off ? on/off control function ? trim function ? surface mount features: ? 15 watts output power ? 4:1 ultra wide input voltage of 9-36 and 18-75vdc ? industry standard pin-out ? high efficiency up to 87% ? low profile: 1.10 x 0.94 x 0.335 inches ? fixed switching frequency ? rohs directive compliant ? no minimum load ? input to output isolation: 2250vdc, min ? input under-voltage protection ? output over-voltage protection ? over-current protection, auto-recovery ? output short circuit protection ? remote on/off control ? adjustable output voltage ? surface mount or through hole ? cost efficient open frame design description: jfw series single output dc/dc conve rters provide up to 15 watts of output power in an industry standard package and footprint. these units are specifically designe d to meet the power needs of low profile. all models feature with 4:1 ultra wide input voltage of 9-36vdc and 18-75vdc, co mprehensively protected against over- current, over-voltage and input under-voltage prot ection conditions, and trimmable output voltage. ul tuv cb ce mark (pending)
technical datasheet JFW24S15-1000 (888) 597-wall www.wallindustries.com page 2 of 16 technical specifications m m o o d d e e l l n n o o . . JFW24S15-1000 all specifications are based on 25 o c, nominal input voltage and maximum ou tput current unless otherwise noted. we reserve the right to change speci fications based on te chnological advances. specification related condition min nom max unit switching frequency test at nominal vin and full load 400 khz input (v in ) operating voltage range 9 24 36 vdc input voltage (continuous) 36 vdc input voltage (transient 100ms) 50 vdc uvlo turn-on threshold 9 vdc uvlo turn-off threshold 8 vdc input standby current nominal vin and no load 15 ma input voltage variation complies w ith est300 132 part 4.4 5 v/ms input current nominal vin and full load 772 ma reflected ripple current 5 to 20mhz, 12h source impedance (see the test setup section - pg 9) 30 ma pk-pk remote off input current 2.5 ma input current of remote control pin -0.5 1.0 ma efficiency test at nominal vin and full load (see the test setup section ? pg 9) 85 % output (v o ) operating output range nominal vin and full load 14.85 -1% 15 15.15 +1% vdc voltage adjustment see the external trim ad justment section (pg 6) 13.5 -10% 15 16.5 +10% vdc load regulation 0% to 100% full load -0.2 +0.2 % line regulation ll to hl at full load -0.2 +0.2 % output ripple & noise 1uf ceramic & 10uf tantal um at 20mhz bandwidth (see the test setup section - pg 9) 100 mv pk-pk output current 0 1.0 a output voltage overshoot ll to hl at full load 3 % vout over voltage protection voltage clamped 16.8 20.5 vdc over current protection 150 % fl short circuit protection hiccup, automatic recovery dynamic load response test at nominal vin peak deviation load step change from 75 to 100% or 100 to 75 % of fl 300 mv setting time (vout < 10% peak deviation) 250 s remote on/off the on/off pin voltage is referenced to -vin (see the remote on/off control section - pg 5) negative logic dc-dc on (short) 0 1.2 vdc dc-dc off (open) 3 12 vdc positive logic dc-dc on (open) 3 12 vdc dc-dc off (short) 0 1.2 vdc start up time test at nominal vin and constant resistive load power up 30 ms remote on/off 30 ms isolation isolation voltage (input-output) 2250 vdc isolation resistance 10 g ? isolation capacitance 1000 pf environmental operating ambient temperature (w/ derating) -40 +85 o c storage temperature -55 +125 o c temperature coefficient -0.02 +0.02 % / o c mtbf see the mtbf and reliab ility section (pg 15) bellcore tr-nwt-000332, t c =40c 1,322,000 hours mil-std-217f 514,700 hours mechanical see figure 1 weight 10.5 grams dimensions 1.10 x 0.94 x 0.335 inches
technical datasheet JFW24S15-1000 (888) 597-wall www.wallindustries.com page 3 of 16 figure 1: mechanical dimensions pin connection pin JFW24S15-1000 1 + input 2 - input 3 on/off 4 +vout 5 trim 6 -vout 0.94(23.88) 0.94(23.88) max 0.50(12.7) 0.50(12.7) smd type dip type 0.02(0.5) max 0.4(10.16) 0.80(20.32) section b-b b-b max 0.02(0.5) 0.09(2.3) min stand-off height compliance 0.30(7.62) 0.07(1.78) max 0.07(1.78) (0.6) 0.80(20.32) section a-a 0.03 (0.75) a a 0.4(10.16) 0.30(7.62) 0.05(1.3)typ notes: 1. all dimensions in inches (mm) 2. tolerance: x.xx0.02 (x.x0.5) x.xxx0.010 (x.xx0.25) 3. pin pitch tolerance: 0.014 (0.35) external output trimming 6 5 4 trim up trim down rt1 or rt2 output can be externally trimmed by using the method shown below. product standard table option suffix negative remote on/off with dip r negative remote on/off with smt sr positive remote on/off with dip blank positive remote on/off with smt s dip type without on/off pin d smt type without on/off pin sd dip type without on/off & trim pin g smt type without on/off & trim pin sg dip type without trim pin f smt type without trim pin sf table 1 table 2 figure 2 dip type smt type
technical datasheet JFW24S15-1000 (888) 597-wall www.wallindustries.com page 4 of 16 output over voltage protection the output over-voltage protection cons ists of a zener diode that monitors the output voltage on the feedback loop. if the voltage on the output terminals exceeds the ove r-voltage protection threshold, then the zener diode will send a current signal to the control ic to limiting the output voltage. input source impedance the power module should be connected to a low impe dance input source. highly inductive source impedance can affect the stability of the power module. input external c-l-c filte r is recommended to minimize input reflected ripple current. the inductor is simulated s ource impedance of 12h and capacitor is nippon chemi-con kze series 220f/100v&33f/100v. the capacitor must as cl ose as possible to the input terminals of the power module for lower impedance. short circuit protection continuous, hiccup and auto-recovery mode. during short circuit, converter still shut down. the averag e current during this condition will be very low and the device can be safety in this condition. thermal consideration the power module operates in a variety of thermal e nvironments. however, sufficient cooling should be provided to help ensure reliable op eration of the unit. heat is remove d by conduction, convention, and radiation to the surrounding enviro nment. proper cooling can be verified by m easuring the point as the figure below. the temperature at this location should not exceed 120c. when operating, adequate cooling must be provided to maintain the test point temperature at or below 120c. although the maxi mum point temperature of the power modules is 120c, you can limit this temperature to a lower value for extremely high reliability. design considerations: output over current protection when excessive output currents occur in the system, circuit protection is required on all power supplies. normally, overload current is maintained at appr oximately 150% of rated current for the jfw series. hiccup-mode is a method of operation in a power suppl y whose purpose is to prot ect the power supply from being damaged during an over-current fa ult condition. it also enables the power supply to restart when the fault is removed. one of the problems resulting from over current is that excessive heat may be gene rated in power devices; especially mosfet and schottky diodes and the temperature of those devices may exceed their specified limits. a protection mechanism has to be used to pr event those power devices from being damaged. temperature measure point top view figure 3
technical datasheet JFW24S15-1000 (888) 597-wall www.wallindustries.com page 5 of 16 remote on/off control the remote on/off pin is controlled dc/dc power module to turn on and off; the us er must use a switch to control the logic voltage high or low level of the pin referenced to vi (-). the switch can be open collector transistor, fet and photo-couple. the switch must be capab le of sinking up to 1ma at low-level logic voltage. high-level logic of the on/off signal maximum voltage is allowable leakage current of the switch at 15v is 50ua. remote on/off implementation circuits isolated-closure remote on/off lev el control using ttl output level control using line voltage there are two remote control options available, positive logic and negative logic. a. the positive logic structure turned on the dc/d c module when the on/off pin is at high-level logic and low-level logic is turned off it. when jfw module is turned off at low-level logic when jfw module is turned on at high-level logic b. the negative logic structure turn ed on the dc/dc module when the on/off pin is at low-level logic and turned off when at high-level logic. when jfw module is turned on at low-level logic w hen jfw module is turned off at high-level logic figure 4 figure 5 figure 6
technical datasheet JFW24S15-1000 (888) 597-wall www.wallindustries.com page 6 of 16 external trim adjustment output voltage set point adjustment a llows the user to increase or decrea se the output voltage set point of a module. this is accomplished by connecting an external resi stor between the trim pin and either the +vout or -vout pins. with an external resist or between the trim and +vout pin, th e output voltage set point decreases. with an external resistor between the trim and -vout pin, the output voltag e set point increases. vo + is the desired up output voltage vo - is the desired down output voltage trim vo + r up vo ? r down 1% 15.15v 161.557 k ? 14.85v 818.223 k ? 2% 15.3v 78.223 k ? 14.7v 401.557 k ? 3% 15.45v 50.446 k ? 14.55v 262.668 k ? 4% 15.6v 36.557 k ? 14.4v 193.223 k ? 5% 15.75v 28.223 k ? 14.25v 151.557 k ? 6% 15.9v 22.668 k ? 14.1v 123.779 k ? 7% 16.05v 18.7 k ? 13.95v 103.938 k ? 8% 16.2v 15.723 k ? 13.8v 89.057 k ? 9% 16.35v 13.409 k ? 13.65v 77.483 k ? 10% 16.5v 11.557 k ? 13.5v 68.223 k ? (in ? ) table 3 trim resistor values (in ? ) rt2 rt1 -vout trim +vout +vin -vin figure 7 5110 5 . 12 5 . 2 5 . 2 0 . 1 4 ? ? ? ? = + o up v r 5110 ) ( 0 . 1 ) 5 . 2 ( 4 ? ? ? ? = ? ? o out o down v v v r
technical datasheet JFW24S15-1000 (888) 597-wall www.wallindustries.com page 7 of 16 graph 1: efficiency vs. output current graph 2: efficiency vs. input voltage (full load) graph 3: output power vs. ambient temperature & airflow (nominal vin) graph 4: power dissipation vs. output current graph 5: conducted emission of en55022 class a (nominal vin and full load) graph 6: conducted emission of en55022 class b (nominal vin and full load) frequency (mhz) % of full load input voltage (v) a mbient temperature, ta (c) efficiency (%) efficiency (%) output power (%) frequency (mhz) power dissipation (w) % of full load 9v 24v 36v
technical datasheet JFW24S15-1000 (888) 597-wall www.wallindustries.com page 8 of 16 graph 7: typical input start-up and output rise characteristic (nominal vin and full load) graph 8: typical output ripple and noise (nominal vin and full load) graph 9: using on/off voltage start-up and vo rise characteristic (nominal vin and full load) graph 10: transient response to dynamic load change from 100% to 75% to 100% of full load at nominal vin input voltage output voltage output voltage output voltage on/ off voltage
technical datasheet JFW24S15-1000 (888) 597-wall www.wallindustries.com page 9 of 16 test setup: the JFW24S15-1000 specifications are tested with the following configurations: input reflected-ripple curren t measurement test setup component value voltage reference l 12h ---- ---- c 220f 100v aluminum electrolytic capacitor c 33f 100v aluminum electrolytic capacitor peak-to-peak out put ripple & noise measurement setup output voltage and effici ency measurement setup note: all measurements are taken at the module terminals figure 8 figure 9 figure 10 % 100 ? ? ? ? ? ? = iin vin iout vout efficiency
technical datasheet JFW24S15-1000 (888) 597-wall www.wallindustries.com page 10 of 16 emc considerations suggested schematic for en55022 co nducted emission class a limits recommended layout with input filter to meet conducted emissions en55022 cla ss a needed the following components: jfw24sxx-xxxx component value voltage reference l1 2.2uh ---- 2.3a 0.025 ? 0504 smd inductor p/n: pmt-059 c1 2.2uf 50v 1812 mlcc c2, c3 470pf 3kv 1808 mlcc jfw48sxx-xxxx component value voltage reference l1 10uh ---- 1.4a 0.1 ? 0504 smd inductor p/n: pmt-047 c1 2.2uf 100v 1812 mlcc c2, c3 470pf 3kv 1808 mlcc figure 11 figure 12
technical datasheet JFW24S15-1000 (888) 597-wall www.wallindustries.com page 11 of 16 emc considerations (continued) suggested schematic for en55022 co nducted emission class b limits recommended layout with input filter to meet conducted emissions en55022 cla ss b needed the following components: jfw24sxx-xxxx component value voltage reference c2, c3 2.2f 50v 1812 mlcc c4 ---- ---- ---- c3, c4 1000pf 2kv 1808 mlcc l1 550h ---- common chok e, p/n: pmt-058 l2 2.2h ---- 2.3a 0.025 ? 0504 smd inductor p/n: pmt-059 jfw48sxx-xxxx component value voltage reference c2, c3 2.2f 100v 1812 mlcc c4 ---- ---- ---- c3, c4 1000pf 2kv 1808 mlcc l1 550h ---- common chok e, p/n: pmt-058 l2 10h ---- 1.4a 0.1 ? 0504 smd inductor p/n: pmt-047 figure 13 figure 14
technical datasheet JFW24S15-1000 (888) 597-wall www.wallindustries.com page 12 of 16 recommended pad layout for dip type recommended pad layout for smt type figure 15 figure 16
technical datasheet JFW24S15-1000 (888) 597-wall www.wallindustries.com page 13 of 16 soldering and reflow considerations: lead free wave solder profile for dip type lead free reflow profile for smt type zone reference parameter rise temp. speed: 3 /sec max. preheat zone preheat temp: 100~130 peak temp: 250~260 actual heating peak time (t1+t2 time):4~6 sec zone reference parameter rise temp. speed: 1~3 /sec preheat time: 60~90sec preheat zone preheat temp.155~185 rise temp. speed: 1~3 /sec melting time: 20~40 sec melting temp:220 peak temp: 230~240 actual heating peak time: 10~20 sec cooling rise temp. speed: -1~ -5 /sec figure 17 figure 18
technical datasheet JFW24S15-1000 (888) 597-wall www.wallindustries.com page 14 of 16 packaging information: dip type smt type dip type notes: 1. material: ps (thick=1.2mm) notes: 1. 10 sprocket hole pitch cumulative tolerance 0.2 2. camber not to exceed 1mm in 100mm. 3. material: black advantek polystyrene. 4. ao and bo measured on a plane 0.3mm above the bottom of the pocket. 5. ko measured from a plane on the inside bottom of the pocket to the top surface of the carrier tape. 6. pocket position relative to sprocket hole measured as true position of pocket, not pocket hole. figure 19 figure 20
technical datasheet JFW24S15-1000 (888) 597-wall www.wallindustries.com page 15 of 16 safety and installation instruction: fusing consideration caution: this power module is not internally fu sed. an input line fuse must always be used. this encapsulated power module can be used in a wide va riety of applications, ranging from simple stand-alone operation to an integrated part of so phisticated power architecture. to maxi mum flexibility, internal fusing 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 maximum rating of 3a for jfw24sxx- xxxx modules and 1.5a for jfw48sxx-xxxx modules. based on the information provided in this data sheet on inrush energy and maximum dc input current; the same type of fuse with lower rating can be used. re fer to the fuse manufacturer?s data for further information. mtbf and reliability the mtbf of the jfw series of dc /dc converters has been calculated us ing bellcore tr-nwt-000332 case i: 50% stress, operating temperature at 40c (ground fixed and controlled environment). the resulting figure for mtbf is 1.322 10 6 hours. mil-hdbk 217f notice2 full load, operating temperat ure at 25c. the resulting figure for mtbf is 5.147 10 5 hours.
technical datasheet JFW24S15-1000 (888) 597-wall www.wallindustries.com page 16 of 16 ordering information: part number example: jfw 24 s 15 ? 1000 s company information: wall industries, inc. has created custom and modified units for over 40 years. our in-house research and development engineers will provide a solution that ex ceeds your performance requirements on-time and on budget. our iso9001-2000 certification is ju st one example of our commitment to producing a high quality, well documented product for our customers. our past projects demonstrate our co mmitment to you, our customer. wall i ndustries, inc. ha s a reputation for working closely with its customers to ensure each solution meets or exceeds form, fit and function requirements. we will continue to provide ongoing support for your project above and beyond the design and production phases. give us a call today to discuss your future projects. contact wall industries for further information: phone: (603)778-2300 toll free: (888)587-9255 fax: (603)778-9797 e-mail: sales@wallindustries.com web: www.wallindustries.com address: 5 watson brook rd. exeter, nh 03833 series designation nominal input voltage single output nominal output voltage maximum output current (ma) option description r negative remote on/off with dip sr negative remote on/off with smt blank positive remote on/off with dip s positive remote on/off with smt d dip type without on/off pin sd smt type without on/off pin f dip type without trim pin sf smt type without trim pin g dip type without on/off & trim pin sg smt type without on/off & trim pin

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