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technical reference notes apc12 centauri ii model: apc12 series sheet 1 of 23 january 6, 2002 revision a (preliminary) centauri ii (apc12) non-isolated dc/dc power module tiny smt footprint ? 1.8v-12v input, 0.9v to 3.6v output the apc12 centauri ii series is astec?s recent addition to its non-isolated smt pol line. with the wide acceptance of it?s predecessor (apc08 series) and the continuous system requirement for higher load current, the centauri platform have been revolutionized to provide 12a load current from it?s original 8a device. the apc12 offers the same standard features common to the centauri product line: wide input voltage range; wide output voltage range; high efficiency; positive output enable; power good signal and current sharing. it also adapts the same centauri smt footprint for optimum user flexibility and multiple sourcing. the apc12 also comes with an output trim pin, which allows output adjustment from 0.9v to 3.6v through external resistance programming. it works from a wide input voltage range of 1.8v to 13v and offers an extensive array of output voltages starting from 0.9v to 3.6v. it is ideal for point of load applications and provides the most flexibility for the ever-changing dsp and asic power requirements. electrical parameters input input range 1.8-6.0vdc and 6.0-13.0vdc input surge 14v efficiency 3.3v @ 93.4% (typical @ 10a) 92.3% (typical @ 12a) control enable ttl compatible (positive logic) output regulation (line, load, temp) <3% ripple and noise 75mv - ( 2.5v output) 50mv - (<2.5v output) output voltage adjust range 0.9v to 3.6v (j version) transient response typical 5% deviation with 50% to 75% step load 200 s recovery special features point of load (pol) applications high efficiency, 3.3v@94% (25%-75% load) open frame smt remote on/off (positive enable) low output ripple and noise regulation to zero load programmable output from 0.9v to 3.6v fixed frequency switching (200 khz) power good signal (optional) active current share (optional) safety designed to meet: ul, cul 60950 recognized (pending) tuv en60950 licensed (pending) industry standard 0.63? x 1.3? x 0.29h smt environmental specifications operating temperature: -40c to +85c storage temperature: -40c to +125c mtbf: >1 million hours preliminary
technical reference notes apc12 centauri ii model: apc12 series sheet 2 of 23 january 6, 2002 revision a (preliminary) apc12 centauri ii series this specification covers the requirements for a new 1.3" x 0.63" x 0.38?(h), 12a single output high efficiency non-isolated smt dc-dc converter model name vin nominal/ vin range vout/iout apc12j03 base model 3.3v / 1.8-6.0v 0.9v, 12a apc12j03-9 1 with output trim 3.3v / 1.8-6.0v 0.9v, 12a apc12k03 base model 3.3v / 1.8-6.0v 1.2v, 12a apc12m03 base model 3.3v / 1.8-6.0v 1.5v, 12a apc12y03 base model 3.3v / 2.2-6.0v 1.8v, 12a apc12g03 base model 3.3v / 3.0-6.0v 2.5v, 12a apc12f03 base model 5.0v / 4.2-6.0v 3.3v, 12a apc12j08 base model 8v / 5.6-13.0v 0.9v, 12a apc12j08-9 1 with output trim 8v / 5.6-13.0v 0.9v, 12a apc12k08 base model 8v / 5.6-13.0v 1.2v, 12a apc12m08 base model 8v / 5.6-13.0v 1.5v, 12a apc12y08 base model 8v / 5.6-13.0v 1.8v, 12a apc12g08 base model 8v / 5.6-13.0v 2.5v, 12a apc12f08 base model 8v / 6.0-13.0v 3.3v, 12a notes: 1. ?j? (0.9v) version has a stand alone output trim option (suffix ?-9?) 2. options (suffix): "-9ma" = trim with power good and active current share "-j" = tray packaging
technical reference notes apc12 centauri ii model: apc12 series sheet 3 of 23 january 6, 2002 revision a (preliminary) electrical specifications standard test condition on a single unit, unless otherwise specified. t a : 25c (ambient air) forced airflow 200lfm minimum v in (p1): nominal input (refer to table in sheet 2) enable (p5): open vo (p2): connect to load gnd (p3): return for vin and vo trim (p4): open pgood (p6): open p (p7): open absolute maximum ratings stresses in excess of the absolute maximum ratings can cause permanent damage to the device. functional operation of the device is not implied at these or in any other conditions in excess of those given in the operational sections of the specs. exposure to absolute maximum ratings for extended periods can adversely affect device reliability. parameter device symbol min typ max unit input voltage continuous 03 v in 1.8 - 6.0 vdc transient (100ms) 03 v in,trans - - 7.0 vdc continuous 08 v in 5.6 - 13.0 vdc transient (100ms) 08 v in,trans - - 14.0 vdc operating temperature all t a -40 - 85 oc storage temperature all t stg -40 - 125 oc operating humidity all - - - 85 % input specifications parameter device symbol min typ max unit operating input voltage 1 03 v in 1.8 3.3 6.0 vdc 08 5.6 8.0 13.0 vdc apc12f08 6.0 8.0 13.0 vdc maximum input current 2 (v in = 0 to v in,max ; i o = i o,max ) all i in,max - - 14.0 a input ripple current 5hz to 20mhz all i in-1 - 250 300 map-p note: 1. minimum v in (03 device) for 1v8, 2v5 and 3v3 versions are 2v2, 3v and 4.2v respectively. minimum v in (08 device) for 3v3 is 6.0v. 2. this power module is not internally fused. the use of an input line fuse is recommended.
technical reference notes apc12 centauri ii model: apc12 series sheet 4 of 23 january 6, 2002 revision a (preliminary) electrical specifications (continued) output specifications parameter device symbol min typ max unit output voltage setpoint v in = v in, min to v in, max at i o =i o,max 0.9v 1.2v 1.5v 1.8v 2.5v 3.3v v o,set v o,set v o,set v o,set v o,set v o,set 0.873 1.164 1.455 1.746 2.425 3.200 0.900 1.200 1.500 1.800 2.500 3.300 0.927 1.236 1.545 1.854 2.575 3.400 vdc vdc vdc vdc vdc vdc output regulation line: v in = v in, min to v in, max load: i o = i o, min to i o, max temp: t a = -40 oc to +85oc all - - - - - - - - - 0.5 1.0 1.5 % % % output ripple and noise 3 peak-to-peak: 5 hz to 20 mhz 2.5v <2.5v - - - - - - 75 50 mv pk-pk mv pk-pk output current all 3v3 i o 0 0 - - 12 12 a a external load capacitance capacitor esr all - - - - - - 3000 100 f m ? output current-limit inception 4 all i o - 20 - a output short-circuit current 5 all - - - - - efficiency v in = 1.8v to 6v 1 i o = 12a resistive load j03 k03 m03 y03 g03 f03 73 80 83 86 88 90 76 81 86 87 90 92 79 84 89 90 93 94 % % % % % % v in = 5.6v to 13v 1 i o = 12a resistive load j08 k08 m08 y08 g08 f08 71 75 79 80 85 88 73 77 81 82 87 90 74 79 83 84 89 91 % % % % % % switching frequency all 200 khz turn-on time (input to output) 6 i o = i o,max ; v in = v in,nom all - - - 65 ms
technical reference notes apc12 centauri ii model: apc12 series sheet 5 of 23 january 6, 2002 revision a (preliminary) electrical specifications (continued) output specifications (continued) parameter device symbol min typ max unit dynamic response: slew rate load change: 50% - 75% i o,max peak deviation settling time to v o,nom all all all ? i o / ? t - - - - - 0.1 5 100 - 10 200 a/ s %v o s load change: 50% - 25% i o,max peak deviation settling time to v o,nom all all - - - - 5 100 10 200 %v o s output voltage overshoot passive resistive full load all - - 5 - %vo note: 3. ripple specs are specified at 56uf decoupling capacitance for 03 devices and 100uf for 08 devices. 4. this feature is only for module protection and is not intended for customer application. the value is specified at 25c ambient air temperature. operation outside the power-derating curve may result to an ocp. 5. pulse train with 90ms period and 1 ms pulse width. average i out equals about zero. 6. input to output turn-on time is defined as the difference between t1 and t2: where t1 is the time when the input voltage reaches the minimum v in (v in = v in,min ) and t2 is the time when the output voltage reaches its specified range (v o = v o,set-min ). feature specification parameter device symbol min typ max unit output voltage adjustment range 7 -9 opt -9ma opt - - v o v o - - 3.6 3.6 v v module parallel capability v in = v in,min to v in,max at i o-tot = (i o,max )/(60%) current sharing to be within: -9ma opt - 40 - 60 %i o-tot power good 8 open collector: max sink current max pull-up voltage all all - - - - 5 6 ma v output enable 9 open collector ttl compatible module on: logic high module off: logic low collector current all all all 4.1 0 - - - - 14 0.8 60 vdc vdc a note: 7. single resistor adjustment or single resistor plus a voltage source adjustment. refer to sheet 9 for recommendations on how to trim the output voltage. 8. refer to figure 6 for the pgood configuration. 9. refer to figure 3 for the output voltage enable configuration.
technical reference notes apc12 centauri ii model: apc12 series sheet 6 of 23 january 6, 2002 revision a (preliminary) electrical specifications (continued) isolation specification - the apc12 series are non-isolated units. safety approval - ul / cul 60950, and tuv en60950 - flammability and temp rise only.
technical reference notes apc12 centauri ii model: apc12 series sheet 7 of 23 january 6, 2002 revision a (preliminary) basic operation and features the apc08/12 centauri family was designed specifically to address applications where on board distributed power with point- of-load converters (conversion needed as close to the ic, usually dsp?s and asic?s) is employed. with its wide range input and flexible programmable output, any change in the load becomes very manageable with little to no impact on time to market. all of the converters in this family are buck converters. the apc12x03 versions allow 1.8v to 6v input voltage and the apc12x08 versions allow a 5.6v to 13v input with 14v max surge. module pin assignment there are 4 to 7 surface mount pins on a centauri module. the availability of pins from individual modules is relevant to its version / selected option. pin # designation p1 v in input voltage p2 v o output voltage p3 gnd common ground p4 trim output voltage adjustment [option] p5 enable output voltage enable p6 pgood power good [option] p7 p load current active sharing [option] industry standard pinout when ordered with no options, the module comes with only 4 pins ? v in , gnd, v out and enable ? and is compatible with other leading manufacturer?s footprint. when the full-featured module is required: with output trim; active current share and power good signal pins, ?-9ma? suffix is added to the standard part number. please refer to the part number ordering scheme for other options (including packaging). note: when using the trim function, this module offers much more trim flexibility than the competitive footprint and also requires a jumper between the two footprints to be source compatible. contact factory for details. figure 1. pin assignment viewed from top of board. current v in share enable trim gnd v o pgood
technical reference notes apc12 centauri ii model: apc12 series sheet 8 of 23 january 6, 2002 revision a (preliminary) 300 f typical application circuit (standard pinout) recommended c1 is a low esr (<100 m ? ) 330 f tantalum and c2 is a 1 f ceramic or equivalent. recommended output- decoupling capacitor c3 is 56 f (less than 75 m ? esr) for apc12x03 devices and 100 f (less than 40 m ? esr) for apc12x08 devices. figure 2a. typical application circuit. output capacitor or combination 1uf ceramic cap measure output ripple across 1uf cap a pprox 1? a pprox 1? figure 2b. ripple measurement setup. pcb
technical reference notes apc12 centauri ii model: apc12 series sheet 9 of 23 january 6, 2002 revision a (preliminary) enable pin (standard configuration) pin p5 is functioned to enable the output voltage of a module. if this pin is left open or connected to 4.1vdc up to 14vdc, the module is turned on. on the other hand, if this pin is connected to ground or to a voltage potential from 0 to 0.8vdc, the module is turned off. the enable pin can source current up to 60 a max - suited for typical open-collector transistors readily available in the market. for ttl compatibility, figure 3 shows a 7405 open collector inverter ic utilized to function the enable feature. other common chips that can do the function are 74s05; 74hct05; non-inverting - 7407; 74s07; 74hc07. if smt packaging is preferred, fairchild's tiny logic nc7sz05 or ti's little logic sn7slvc1g06 comes in sot23 or sc70 packages. special feature pins (options): trim function (-9): pin p4 is used for output voltage adjustment. the output voltage can be trimmed through an external resistor or through an external dc supply as described in the succeeding sections. method 1: external trim resistor . by connecting an external resistor across p4 and p3 (gnd), the voltage appearing on pin p2 (vo) is adjusted to a higher value. the output voltage of a module can be adjusted up to a maximum value of 3.3v (nominal) or 83% of the input voltage, whichever is lower. by connecting an external resistor across p4 and p2, vo is adjusted to a lower value. only small reductions, 2%, in voltage are recommended, as adjustment to lower voltages tends to affect the loop compensation of the module. full range adjustment (from 0.9v to 3.6v) can be obtained from a module with the lowest vo setpoint (0.9vo). figure 3. output voltage enable function diagram.
technical reference notes apc12 centauri ii model: apc12 series sheet 10 of 23 january 6, 2002 revision a (preliminary) trim function (continued) to adjust vo to a higher value , please refer to figure 4. the required resistor value (rt) can be determined through equation (1) where vo is the voltage on p2 before the adjustment and vot is the voltage of p2 after rt is connected. 1 r vo vot vref rt ? = equation (1) please refer to related constants given in table 1 to calculate the equation. table 1. constants version 0.9v 1.2v 1.5v 1.8v 2.5v 3.3v r1 apc08/12x03 r2 97.6k 8.45k 4.32k 2.94k 1.69k 1.13k 3.09k apc08/12x08 r2 210k 17.4k 9.09k 6.04k 3.48k 2.32k 6.49k v ref 0.87v be aware that the maximum vo allowed is 3.6v. please refer to centauri datasheet. example: module version: apc08j03-9 (1.8 to 6.0vin, 0.9vo). requiring to adjust output voltage from vo = 0.9v to vot = 1.8v. v ref = 0.87v and r 1 = 3.09k ? (from table 1). based on equation (1), rt can be determined as 3.0k ? . to adjust vo to a lower value , rt should be connected between p4 and p2. equation (2) provides the calculation for rt. 2 ) ( ) )( ( r v v v v v v v rt ot o ref ref ot ref o ? ? ? = equation (2) be aware that the minimum vo is 0.9v. example module version: apc08f03-9 (4.0 to 6.vin, 3.3vo). requiring to adjust the output voltage from vo = 3.3v to vot = 3.3 (1-0.02) = 3.234v. vo = 3.3v, vot = 3.234v, v ref = 0.87v, r 2 = 1.13k ? (from table 1). based on equation (1), rt can be determined as 111.9k ? . figure 4. output voltage trim setup.
technical reference notes apc12 centauri ii model: apc12 series sheet 11 of 23 january 6, 2002 revision a (preliminary) trim function (continued) method 2: external dc source by connecting an external dc supply across p4 (enable) and p3 (gnd) through a limiting resistor rt, (see figure 5), output voltage adjustment can also be achieved. equation 3 provides the relationship between the external dc supply, vt, and vo (where vo is the desired output voltage). given: rt = 10k ? vo adjustment to lower voltages . this method does not limit the recommended lower vo adjustment to 2% as mentioned on previous sections re: vo adjustment through external trim resistor. example: module version: apc08g03-9 (3v to 6vin, 2.5vo). requiring to adjust the output voltage from vo = 2.5v to 1.8v vo = 1.8v, v ref = 0.87v, r 1 = 3.09k ? , r 2 = 1.69k ? (from table 1). based on equation (3), vt = 3.0v. example: module version: apc08g03-9 (3v to 6vin, 2.5vo). requiring to adjust the output voltage from vo = 2.5v to 0.9v vo = 0.9v, v ref = 0.87v, r 1 = 3.09k ? , r 2 = 1.69k ? (from table 1). based on equation (3), vt = 5.9v. vo adjustment to higher voltages example: module version: apc08g03-9 (3v to 6vin, 2.5vo). requiring to adjust the output voltage from vo = 2.5v to 3.3v vo = 3.3v, v ref = 0.87v, r 1 = 3.09k ? , r 2 = 1.69k ? (from table 1). based on equation (3), vt = -1.84v. if application of negative voltage is not desired, the limiting resistor rt can either be changed to a lower value ( rt = 1k ? ? ? ? , such that vt = 0.60v per equation 3), or use method 1. vo r rt vref r rt r rt vt 1 2 1 1 ? ? ? ? ? ? ? + + = equation (3) figure 5. external dc source for output trim adjust.
technical reference notes apc12 centauri ii model: apc12 series sheet 12 of 23 january 6, 2002 revision a (preliminary) power good signal operation (option (-9ma)): pg pin provides an output signal indicating the vout is operational (ttl logic signal). it can sink current up to a max of 5ma and can have a maximum external pull-up voltage of 6v. please see recommended setup shown on figure 6. active current share operation (option (-9ma)): active current share pin is compatible with like modules only (apc08 to apc08 or apc12 to apc12). connecting this pin directly with the same pin from another module guarantees current sharing to within 40% to 60% iout. note that this pin is not compatible with competitive modules that employ active current sharing. to attain efficient current sharing between like modules, the following points are recommended: a) the modules to be shared should be located as close as possible into the host card. b) the copper tracks that connect vo and gnd should at least be 0.60" in width with at least 2 oz. cu. figure 6. pgood setup.
technical reference notes apc12 centauri ii model: apc12 series sheet 13 of 23 january 6, 2002 revision a (preliminary) performance curves ? efficiency apc12f03 efficiency vs load current 65 70 75 80 85 90 95 100 024681012 load current (a) efficiency (%) 4v input 5v input 6v input apc12g03 efficiency vs load current 70 75 80 85 90 95 100 024681012 load current (a) efficiency (%) 3v input 4.5v input 6v input figure 7. apc08f03 efficiency curve. figure 8. apc08g03 efficiency curve. apc12y03 efficiency vs load current 65 70 75 80 85 90 95 024681012 load current (a) efficiency (%) 2.2v input 3.3v input 6v input apc12m03 efficiency vs load current 65 70 75 80 85 90 95 024681012 load current (a) efficiency (%) 1.8v input 3.3v input 6v input figure 9. apc08y03 efficiency curve. figure 10. apc08m03 efficiency curve. apc12k03 efficiency vs load current 60 65 70 75 80 85 90 02 4681012 load current ( a) 1.8v input 3.3v input 6v input apc12j03 efficiency vs load current 60 65 70 75 80 85 90 024681012 load current (a) efficiency (%) 1.8v input 3.3v input 6v input figure 11. apc08k03 efficiency curve. figure 12. apc08j03 efficiency curve.
technical reference notes apc12 centauri ii model: apc12 series sheet 14 of 23 january 6, 2002 revision a (preliminary) performance curves - efficiency ( continued) apc12f08 efficiency vs. load current 65 70 75 80 85 90 95 024681012 load current [amp] efficiency [%] vin = 6v vin = 8v vin = 13v apc12g08 efficiency vs. load current 65 70 75 80 85 90 95 024681012 load current [amp] efficiency [%] vin = 6v vin = 8v vin = 13v figure 13. apc12f08 efficiency curve. figure 14. apc12g08 efficiency curve. apc12y08 efficiency vs. load current 65 70 75 80 85 90 95 024681012 load current [amp] efficiency [%] vin = 6v vin = 8v vin = 13v apc12m08 efficiency vs. load current 55 60 65 70 75 80 85 90 024681012 load current [amp] efficiency [%] vin = 6v vin = 8v vin = 13v figure 15. apc12y08 efficiency curve. figure 16. apc12m08 efficiency curve. apc12k08 efficiency vs. load current 55 60 65 70 75 80 85 90 024681012 load current [amp] efficiency [%] vin = 6v vin = 8v vin = 13v apc12j08 efficiency vs. load current 55 60 65 70 75 80 85 90 024681012 load current [amp] efficiency [%] vin = 6v vin = 8v vin = 13v figure 17. apc12k08 efficiency curve. figure 18. apc12j08 efficiency curve.
technical reference notes apc12 centauri ii model: apc12 series sheet 15 of 23 january 6, 2002 revision a (preliminary) performance curves - thermal derating curve apc12f03-9ma; 5v input 0 2 4 6 8 10 12 14 5 1525354555657585 ambient temperature, c load current, a 200lfm 300lfm 400lfm 500lfm apc12g03-9ma; 3.3v input 0 2 4 6 8 10 12 14 5 1525354555657585 ambient temperature, c load current, a 200lfm 300lfm figure 19. f03 - load current vs. ambient temp. figure 20. g03 ? load current vs. ambient temp. apc12y03-9ma; 3.3v input 0 2 4 6 8 10 12 14 5 1525354555657585 ambient temperature, c load current, a 200lfm 300lfm 400lfm apc12m03-9ma; 3.3v input 0 2 4 6 8 10 12 14 5 1525354555657585 ambient temperature, c load current, a 200lfm 300lfm 400lfm figure 21. y03 ? load current vs. ambient temp. figure 22. m03 ? load current vs. ambient temp. apc12k03-9ma; 3.3v input 0 2 4 6 8 10 12 14 5 1525354555657585 ambient temperature, c load current, a 200lfm 300lfm 400lfm apc12j03-9ma; 5v input 0 2 4 6 8 10 12 14 5 1525354555657585 ambient temperature, c load current, a 200lfm 300lfm figure 23. k03 ? load current vs. ambient t temp. figure 24. j03 ? load current vs. ambient temp.
technical reference notes apc12 centauri ii model: apc12 series sheet 16 of 23 january 6, 2002 revision a (preliminary) performance curve - thermal derating ( continued) apc12f08, 8v input 0 2 4 6 8 10 12 14 5 1525354555657585 ambient temperature [ o c] load current [a] 200 lfm 400 lfm 600lfm figure 25. f08 ? load current vs. ambient temp. figure 26. g03 ? load current vs. ambient temp. figure 27. y03 ? load current vs. ambient temp. figure 28. m03 ? load current vs. ambient temp. apc12j08, 8v input 0 2 4 6 8 10 12 14 5 1525354555657585 ambient temperature [ o c] load current [a] 200 lfm 400 lfm 600lfm figure 29. k03 ? load current vs. ambient temp. figure 30. j03 ? load current vs. ambient temp.
technical reference notes apc12 centauri ii model: apc12 series sheet 17 of 23 january 6, 2002 revision a (preliminary) performance curves apc12f03 figure 31. input to output delay at 12a load (ch2 = vo; ch1 = enable voltage). figure 32. output ripple and noise at 12a; v in = 4v; bw = 20mhz; ta = 25oc. apc12g03 figure 33. input to output delay at 12a load (ch2 = vo; ch1 = enable voltage). figure 34. output ripple and noise at 12a; v in = 3.0v; bw = 20mhz; ta = 25oc.
technical reference notes apc12 centauri ii model: apc12 series sheet 18 of 23 january 6, 2002 revision a (preliminary) performance curves (continued) apc12y03 figure 35. input to output delay at 12a load (ch2 = vo; ch1 = enable voltage). figure 36. output ripple and noise at 12a; v in = 3.3v; bw = 20mhz; ta = 25oc. apc12m03 figure 37. input to output delay at 12a load (ch2 = vo; ch1 = enable voltage). figure 38. output ripple and noise at 12a; v in = 3.3v; bw = 20mhz; ta = 25oc.
technical reference notes apc12 centauri ii model: apc12 series sheet 19 of 23 january 6, 2002 revision a (preliminary) performance curves (continued) apc12k03 figure 39. input to output delay at 12a load (ch2 = vo; ch1 = enable voltage). figure 40. output ripple and noise at 12a; v in = 1.8v; bw = 20mhz; ta = 25oc. apc12j03 figure 41. input to output delay at 12a load (ch2 = vo; ch1 = enable voltage). figure 42. output ripple and noise at 12a; v in = 1.8v; bw = 20mhz; ta = 25oc.
technical reference notes apc12 centauri ii model: apc12 series sheet 20 of 23 january 6, 2002 revision a (preliminary) mechanical specifications outline drawing parameter device symbol min typ max unit dimension all l - - 1.300 (33.02) in (mm) w - - 0.630 (16.00) in (mm) h - - 0.370 ( 9.34) in (mm) weight all - - 5 (0.16) 10 (0.32) g (oz) figure 46. mechanical outline (in inches). pin / pin dimension nominal pin dimension 0.055 x 0.102 [in] suggested pad dimensions 0.070 x 0.110 [in] fi g ure 55. recommended pad la y out. fi g ure 56. apc12 mechanical outline. recommended pick up point ? flat surface of inductor 3.18 2.54 1.91
technical reference notes apc12 centauri ii model: apc12 series sheet 21 of 23 january 6, 2002 revision a (preliminary) recommended reflow profile 0 20 40 60 80 100 120 140 160 180 200 220 240 0 30 60 90 120 150 180 210 240 270 300 time (seconds) temperature (deg c) pre-heat zone 120 - 180 sec reflow zone < 80 sec 110 c 183 c peak temperature 200 c - 230 c slope < 4 c /sec mechanical specifications (continued) recommended location for pick and place the flat top surface of the large inductor (topside of the board) provides a versatile and convenient way of picking up the module (see figure 56). a 6-7mm outside diameter nozzle from a conventional smd machine is recommended to attain maximum vacuum pick-up. nozzle travel and rotation speed should be controlled to prevent this off-centered picked-up module from falling off the nozzle. the use of vision recognition systems for placement accuracy will be very helpful. reflow notes / recommendations 1. refer to the recommended reflow profile per figure 57. profile parameters exceeding the recommended maximums may result to permanent damage to the module. 2. the module is recommended for topside reflow process to the host card. for other orientations, contact factory. 3. in the event that the module needs to be desoldered from the host card, some pins may be detached from the module. module markings / labels marking shall be permanent and legible. please refer to figure 58 for the module marking/ label detail. note 1 mmm model no fff option note 2 yyww year / work week d day of week pp nth panel of the day ll location in the panel note 3: barcode 6 & 7 characters / line code 128, 32cpi 0.070" height figure 58. module label apc12mmmfff y ywwdppll figure 57. recommended reflow profile.
technical reference notes apc12 centauri ii model: apc12 series sheet 22 of 23 january 6, 2002 revision a (preliminary) mechanical specifications (continued) packing and shipping standard packaging for the modules will be in tape and reel. jedec-style tray packaging is also available (add suffix "j" in pn). please refer to the ordering information. maximum number of modules in a reel is 250 pcs. the tray can hold 35 modules max. please refer to figure 59 for the t&r carrier dimensions and figure 60 for the tray dimensions. figure 59. tape/ pocket dimensions figure 60. jedec-style tray dimensions in mm.
technical reference notes apc12 centauri ii model: apc12 series sheet 23 of 23 january 6, 2002 revision a (preliminary) part number coding scheme for ordering a p c 1 2 x 0 y - z x output voltage f = 3.3v m = 1.5v g = 2.5v k = 1.2v y = 1.8v j = 0.9v y input voltage range 3 : 1.8v to 6v 8 : 5v to 12v z options 9 : trim function (exist for ?j? version only) 9ma : trim function plus pgood and current sharing j: adding a ?j? suffix indicates jedec style tray packaging; no suffix ?j? defaults to t&r packaging please call 1-888-41-astec for further inquiries or visit us at www.astecpower.com

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