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technical reference note (apc08) model: apc08 series sheet 1 of 23 oc tober 4, 2004 - revision 03 centauri (apc08) non - isolated dc/dc power module the centauri (apc08) dc - dc power module is a high efficiency non - isolated buck converter designed for use in a wide variety of applications. it works from a wide input voltage range of 1.8v to 6v or 5v to 13v and offers an extensive array of output voltages starting from 0.9v to 3.6v (up to 6v in some flavors). through careful layout and component selection it achieves the highest efficiency/load in the smallest footprint available in the market today. it is ideal for point of load applications and provides the most flexibility for the ever - changing dsp and asic power requirements. industry standard 0.53 x 1.3 x 0.29h smt package environmental specifications ? operating temperature: - 40c to +85c ? storage temperature: - 40c to +125c ? mtbf: >3.3 million hours electrical parameters input input range 1.8 - 6.0vdc and 5.0 - 13.0vdc efficiency 3.3v @ 93% typ contro l enable ttl compatible (positive logic) output regulation (line, load, temp) <3% ripple and noise 75mv - ( 3 2.5v output) 50mv - (<2.5v output) output voltage adjust range 0.9v to 3.6v (j version) transient response 5% max deviation with 50% to 75% full load 500 s (max) recovery special features ? point of load (pol) applications ? high efficiency, 3.3v@93% typ ? - 40c to +85c ambient operating temperature ? open frame smt ? positive enable function ? low output ripple and noise ? reg ulation to zero load ? programmable output from 0.9v to 3.6v (external trim resistor) ? fixed frequency switching (400 khz) ? power good signal (optional) ? active current share (optional) safety designed to meet: ul, cul 60950 recognized tuv en60950 licensed
technical reference note (apc08) model: apc08 series sheet 2 of 23 oc tober 4, 2004 - revision 03 apc08 series this specification covers the requirements for a new 1.3" x 0.53" x 0.33?(h) maximum 28w single output high efficiency non - isolated smt dc - dc converter model name vin nominal/ vin range vout/iout apc08j03 3.3v / 1.8 - 6.0v 0.9v , 8a apc08k03 3.3v / 1.8 - 6.0v 1.2v, 8a apc08m03 3.3v / 1.8 - 6.0v 1.5v, 8a apc08y03 3.3v / 2.2 - 6.0v 1.8v, 8a apc08g03 3.3v / 3.0 - 6.0v 2.5v, 8a apc08f03 5.0v / 4.0 - 6.0v 3.3v, 8a apc08j08 8v / 5.0 - 12.0v 0.9v, 8a apc08k08 8v / 5.0 - 12.0v 1.2v, 8a apc08m0 8 8v / 5.0 - 12.0v 1.5v, 8a apc08y08 8v / 5.0 - 12.0v 1.8v, 8a apc08g08 8v / 5.0 - 12.0v 2.5v, 8a apc08f08 8v / 5.0 - 12.0v 3.3v, 8a apc05a08 8v / 5.0 - 12.0v 5v, 5a apc04s08 8v / 5.0 - 12.0v 6v, 4a options (suffix): " - 9" = trim " - 9ma" = trim with power g ood and active current share " - j" = jedec tray - type packaging ?w? = improved loop bandwidth / transient response (only for apc08 x 03 series)
technical reference note (apc08) model: apc08 series sheet 3 of 23 oc tober 4, 2004 - revision 03 electrical specifications standard test condition on a single unit, unless otherwise specified. t a : 25 c (ambient air) vin (p1): apc08x03 +1.8v to +6.0v apc08x08 +5 .0v to +13v 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 exc ess 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 maxi mum 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 5.0 - 13.0 vdc tra nsient (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 un it operating input voltage 1 03 v in 1.8 3.3 6.0 vdc 08 5.0 8.0 12.0 vdc maximum input current 2 (v in = 0 to v in,max ; i o = i o,max ) all apc05 apc04 i in,max - - 9.0 6.0 5.0 a input ripple current 5hz to 20mhz all i in - 1 - 200 250 map - p note: 1. minimum v in (03 device) for 1v8, 2v5 and 3v3 versions are 2v2, 3v and 4v respectively. for 08 device, min v in for 5v and 6v versions are 7.5vin and 8.5vin 2. this power module is not internally fused. the use of an input line fuse (03 version: gma - 10 a; 08 version: gma - 6a bussman fuses or equivalent) is recommended.
technical reference note (apc08) model: apc08 series sheet 4 of 23 oc tober 4, 2004 - revision 03 electrical specifications (continued) output specifications parameter device symbol min typ max unit output voltage setpoint apc08j03 v o,set 0.873 0.9 0.927 vdc (v in =v in,min to v in,max at apc08k03 1.164 1.2 1.236 i o =i o,max ) 1 apc08m03 1.455 1.5 1.545 apc08y03 1.746 1.8 1.854 apc08g03 2.425 2.5 2.575 apc08f03 3.200 3.3 3.400 apc08j08 0.873 0.9 0.927 apc08k08 1.164 1.2 1.236 apc08m08 1.455 1.5 1.5 45 apc08y08 1.746 1.8 1.854 apc08g08 2.425 2.5 2.575 apc08f08 3.200 3.3 3.400 apc05a08 4.850 5.0 5.150 apc04s08 5.820 6.0 6.180 output regulation: line: v in =v in,min to v in,max all - - - 0.5 % load: i o =i o,min to i o,max a ll - - - 0.5 % temp: t a = - 40 c to 85 c all - - - 1.5 % output ripple and noise 11 peak to peak: 5hz to 20mhz 3 2.5v - - - 75 mv pk - pk < 2.5v - - - 50 mv pk - pk output current range all i o 0 - 8 a 5v 0 - 5 6v 0 - 4 external load capa citance 9 suffix ?w? - - - 5000 m f all - - - 500 m f capacitor esr suffix ?w? - 10 - 100 m w all 100 - - m w output current limit inception 3 all i o - 11.5 - a output short circuit current 4 all - - - - efficiency v in = 1.8v to 6v 1 apc08j03 h 74 76 - % i o = 8a resistive load apc08k03 80 81 - apc08m03 83 86 - apc08y03 85 88 - apc08g03 89 91 - apc08f03 90 93 - switching frequency all - - 400 - khz turn - on time (input to output) 5 all - - - 50 ms i o = 8a; v in = v in,nom
technical reference note (apc08) model: apc08 series sheet 5 of 23 oc tober 4, 2004 - revision 03 electrical specifications (continued) output specifications parameter device symbol min typ max unit efficiency apc08j08 71 76 - v in = 6v to 12v apc08k08 75 81 - i o = 8a resistive load apc08m08 77 84 - (5a for 5vo; 4a for 6vo) apc08y08 81 86 - apc08g08 85 90 - apc08f08 87 92 - apc05a08 90 94 - apc04s08 91 95 - dynamic response: slew rate all suffix ?w? d i o / d t - - 0.1 1.0 - - a/ m s load change: 50% - 75% i o ,max all - - 5 10 %v o peak deviation settling time all - - 500 - m s to v o,nom load change: 50% to 25% i o,max all - - 5 10 %v o peak deviation settling time all - - 500 - m s to v o,nom output voltage overshoot passive resistive full load all - - 5 - % v o feature specification parameter device symbol min typ max unit output voltage adjustment range 6 - 9 opt v o - 3.6 v module parallel capability 10 - 9ma 40 - 60 %i o power good 7 open collector max sink current a ll - - 5 ma max pull - up voltage - - 6 v condition pg low 90%v o,set - min > v o > 110%v o,set - max all pg low 0 - 250 m w 90%v o,set - min v o 100%v o,set - max all pg high 100 - - k w output enable 8 module on: logic high all > 4. 1 - 14 vdc module off: logic low all 0 - 0.8 vdc enable source current at logic low all - - 60 m a
technical reference note (apc08) model: apc08 series sheet 6 of 23 oc tober 4, 2004 - revision 03 electrical specifications (continued) note: 3. this feature is only for module protection and is not intended for customer application. th e value is specified at 25c ambient air temperature. for other ambient air temperature, please refer to thermal derating curve to determine corresponding current - limit inception values. 4. pulse train with 90 ms period and 1ms pulse width. average iout equals about zero. 5. 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 it's spec ified range (v o = v o,set - min ). 6. there are two methods applicable to be able to trim the output voltage. please refer to related sections under feature specification. 7. see figure 6 for pgood configuration 8. refer to further notes under feature s pecification for the enable pin function. 9. check with factory for higher output capacitance loading. 10. please refer to ?basic operation and features? section on page 11 for additional information on current sharing. 11. output ripple is measured wi th 470f cap termination on the output. isolation specification - the apc08 series are non isolated units. safety approval - ul / cul 60950, and tuv en60950 - flammability and temp rise only.
technical reference note (apc08) model: apc08 series sheet 7 of 23 oc tober 4, 2004 - revision 03 basic operation and features t he apc08 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 programma ble 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 apc08x03 versions allow 1.8v to 6v input voltage and the apc08x08 versions allow a 5v to 1 2v 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 ? vin, gnd, vout and enable ? and is compatible with other leading manufacturer?s footprint. the pgood, active current share, and trim pins are options that can be ordered with any model number. for the optional trim function add a ( - 9) to the end of the standard part number. for the optional current share and pgood signal in addition to the trim function, add ( - 9ma) to the end of the part number. please refer to the part number ordering scheme section. note: when using the tri m 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 applications note. figure 1. pin assignment viewed from top of board. current v in share enable trim gnd v o pgood
technical reference note (apc08) model: apc08 series sheet 8 of 23 oc tober 4, 2004 - revision 03 typical application circuit (standard pinout) recommended c1 is a low esr (<100 mohms) 100 f tantalum and c2 is a 1 f ceramic or equivalent. recommended output decoupling capacitor c3 for ? w models is 22 f low esr ceramic capacitor ( at a min). for all other models, c3 can go as low as 1 f ceramic capacitor. figure 2. typical application circuit. 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 m a max - suited for typical open - collec tor 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 ad justed 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, figure 3. output voltage enable function diagram.
technical reference note (apc08) model: apc08 series sheet 9 of 23 oc tober 4, 2004 - revision 03 method 1: external trim resistor (continued) whichever is lower. by connecting an external resistor across p 4 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 modul e with the lowest vo setpoint (0.9vo). 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 afte r 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 apc08x03 r2 97.6k 8.45k 4.32k 2.94k 1.69 k 1.13k 3.09k apc08x08 r2 210k 17.4k 9.09k 6.04k 3.48k 2.32k 6.49k v r / v ref 0.87v be aware that the maximum vo allowed is 3.6v (for apc08x08 series). please refer to centauri datasheet. example: module version: apc08j03 - 9 (1.8 to 6.0vin, 0.9v o). requiring to adjust output voltage from vo = 0.9v to vot = 1.8v. v ref = 0.875v and r 1 = 3.09k w (from table 1). based on equation (1), rt can be determined as 3.0k w . 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) note: minimum vo = 0.9v figure 4. output voltage trim setup.
technical reference note (apc08) model: apc08 series sheet 10 of 23 oc tober 4, 2004 - revision 03 method 1: external trim resistor (continued) 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 = 0.875v, r 2 = 1.13k w (from table 1). based on equation (1), rt can be determined as 111.9k w . trim function (continued) method 2: external dc source by connecting an e xternal 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 outpu t voltage). given: rt = 10k w 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: mo dule 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 r = 0.87v, r 1 = 3.09k w , r 2 = 1.69k w (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 r = 0.87v, r 1 = 3.09k w , r 2 = 1.69k w (from table 1). based on equation (3), vt = 5.9v. vo r rt vr r rt r rt vt 1 2 1 1 - ? ? ? ? + + = equation (3) figure 5. external dc source for output trim adjust.
technical reference note (apc08) model: apc08 series sheet 11 of 23 oc tober 4, 2004 - revision 03 method 2: external dc source (continued) vo adjustment to higher voltages exa mple: 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 r = 0.87v, r 1 = 3.09k w , r 2 = 1.69k w (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 w , such that vt = 0.60v per equation 3), or use method 1. power good signal operation (option ( - 9ma)): pg pin provides an output signal indicating the vout is operati onal (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. for multiple module configurations, the pg pin/signal can be used to drive the enable si gnal of the other module for simple sequencing scheme. active current share operation (option ( - 9ma)): active current share pin is compatible with apc08 modules only. connecting this pin directly with the same pin from another module guarantees curr ent 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. c) due to tolerances of turn - on time characteristics, the initial load current of two a pc08 units connected in current sharing configuration should be less than the ocp point of one module. this is to ensure that the first unit that reaches vo set - point is capable of supplying the load current. this also eliminates the possibility of fals e triggering the ocp protection. the load current can then be ramped up to the desired loading condition (typical 13a max combined for 2 modules in parallel) after both outputs have stabilized. d) due to mismatches on the output voltage setpoints of the tw o converters in parallel, it is recommended to maintain a minimum load current (typical 1.5a) on the output. figure 6. pgood setup.
technical reference note (apc08) model: apc08 series sheet 12 of 23 oc tober 4, 2004 - revision 03 3.3v efficiency vs load current @ ta = 25 deg c 60 65 70 75 80 85 90 95 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 load current [amp] efficiency [%] 4vin 5vin 6vin 2.5v efficiency vs load current @ ta = 25 deg c 60 65 70 75 80 85 90 95 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 load current [amp] efficiency [%] 3vin 3.3vin 6vin performance curves - efficiency figure 7. apc08f03 efficiency curve. figure 8. apc08g03 efficiency curve. 1v8 efficiency vs load current @ ta = 25 deg c 60 65 70 75 80 85 90 95 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 load current [amp] efficiency [%} 2.2vin 3.3vin 6vin 1.5v efficiency vs load current @ ta = 25 deg c 60 65 70 75 80 85 90 95 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 load current [amp] efficiency [%] 1.8vin 3.3vin 6vin 1v2 efficiency vs load current @ ta = 25 deg c 55 60 65 70 75 80 85 90 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 load current [amp] efficiency [%] 1.8vin 3.3vin 6vin 0.9v efficiency vs load current @ ta = 25 deg c 50 55 60 65 70 75 80 85 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 load current [amp] efficiency [%] 1.8vin 3.3vin 6vin figure 9. apc08y03 efficiency curve. figure 10. apc08m03 efficiency curve. figure 11. apc08k03 efficiency curve. figure 12. apc08j03 efficiency curve.
technical reference note (apc08) model: apc08 series sheet 13 of 23 oc tober 4, 2004 - revision 03 performance curves - efficiency ( continued) 3.3v efficiency vs load current @ ta = 25 deg c 30 40 50 60 70 80 90 100 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 load current [amp] efficiency [%] 12vin 6vin 2.5v efficiency vs load current @ ta = 25 deg c 30 40 50 60 70 80 90 100 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 load current [amp] efficiency [%] 12vin 6vin figure 13. apc08f08 efficiency curve. figure 14. apc08g08 efficiency curve. 1.8v efficiency vs load current @ ta = 25 deg c 30 40 50 60 70 80 90 100 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 load current [amp] efficiency [%] 12vin 6vin 1.5v efficiency vs load current ta = 25 deg c 20 30 40 50 60 70 80 90 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 load current [amp] efficiency [%] 12vin 6vin figure 15. apc08y08 efficiency curve. figure 16. apc08m08 effi ciency curve. 1.2v efficiency vs load current @ ta = 25 deg c 20 30 40 50 60 70 80 90 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 load current [amp] efficiency [%] 12vin 6vin 0.9v efficiency vs load current @ ta = 25 deg c 20 30 40 50 60 70 80 90 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 load current [amp] efficiency [%] 12vin 6vin figure 17. apc08k08 efficiency curve. fig ure 18. apc08j08 efficiency curve.
technical reference note (apc08) model: apc08 series sheet 14 of 23 oc tober 4, 2004 - revision 03 performance curves - ther mal derating curve 3.3v derating 0 1 2 3 4 5 6 7 8 9 25 35 45 55 65 75 85 ambient temperature [ c] load current [amp] 0 lfm 400 lfm 2.5v derating 0 1 2 3 4 5 6 7 8 9 25 35 45 55 65 75 85 ambient temperature [ c] load current [amp] 0 lfm 400 lfm figure 19. apc08f03 thermal derating curve. figure 20. apc08g03 thermal derating curve. figure 21. apc08y03 thermal derating curve. figure 22. apc08m03 thermal derating curve. 1.2v derating 0 1 2 3 4 5 6 7 8 9 25 35 45 55 65 75 85 ambient temperature [ c] load current [amp] 0 lfm 400 lfm 1.8v derating 0 1 2 3 4 5 6 7 8 9 25 35 45 55 65 75 85 ambient temperature [ c] load current [amp] 0 lfm 400 lfm 0.9v derating 0 1 2 3 4 5 6 7 8 9 25 35 45 55 65 75 85 ambient temperature [ c] load current [amp] 0 lfm 400 lfm figure 23. apc08k03 thermal derating curve. figure 24. apc08j03 thermal derating curve. 1.5v derating 0 1 2 3 4 5 6 7 8 9 25 35 45 55 65 75 85 ambient temperature [ c] load current [amp] 0 lfm 400 lfm
technical reference note (apc08) model: apc08 series sheet 15 of 23 oc tober 4, 2004 - revision 03 performance curve - thermal derating ( continued) 3.3v derating 0 1 2 3 4 5 6 7 8 9 25 35 45 55 65 75 85 ambient temperature [c] load current [amp] 12vin (0 lfm) 12vin (400 lfm) 6vin (0 lfm) 6vin (400 lfm) 2.5v derating 0 1 2 3 4 5 6 7 8 9 25 35 45 55 65 75 85 ambient temperature [c] load current [amp] 12vin (0 lfm) 12vin (400 lfm) 6vin (0 lfm) 6vin (400 lfm) figure 25. apc08f08 thermal derating curve. figure 26. apc08g08 thermal derating curv e. 1.5v derating 0 1 2 3 4 5 6 7 8 9 25 35 45 55 65 75 85 ambient temperature [c] load current [amp] 12vin (0 lfm) 12vin (400 lfm) 6vin (0 lfm) 6vin (400 lfm) figure 27. apc08y08 thermal derating curve. figure 28. apc08m08 thermal derating curve. 1.8v derating 0 1 2 3 4 5 6 7 8 9 25 35 45 55 65 75 85 ambient temperature [c] load current [amp] 12vin (0 lfm) 12vin (400 lfm) 6vin (0 lfm) 6vin (400 lfm) 0.9v derating 0 1 2 3 4 5 6 7 8 9 25 35 45 55 65 75 85 ambient temperature [c] load current [amp] 12vin (0 lfm) 12vin (400 lfm) 6vin (0 lfm) 6vin (400 lfm) 1.2v derating 0 1 2 3 4 5 6 7 8 9 25 35 45 55 65 75 85 ambient temperature [c] load current [amp] 12vin (0 lfm) 12vin (400 lfm) 6vin (0 lfm) 6vin (400 lfm) figure 29. apc08k08 thermal derating curve. figur e 30. apc08j08 thermal derating curve.
technical reference note (apc08) model: apc08 series sheet 16 of 23 oc tober 4, 2004 - revision 03 performance curves typical performance curves, t on delay, at 25 c ambient temperature; i o = i o,max , vin = v in,max . for reference ch1 is connected to +v in pin, ch2 is connected to the output of the module. figure 31. apc08f03 t on delay at v in,max = 6v. figure 32. apc08g03 t on delay at v in,max = 6v. figure 33. apc08y03 t on delay at v in,max = 6v. figure 34. apc08m03 t on delay at v in,max = 6v. figure 35. a pc08k03 t on delay at v in,max = 6v. figure 36. apc08j03 t on delay at v in,max = 6v.
technical reference note (apc08) model: apc08 series sheet 17 of 23 oc tober 4, 2004 - revision 03 performance curves (continued) figure 37. apc08f08 t on delay at v in,max = 12v. figure 38. apc08g08 t on delay at v in,max = 12v. figure 39. apc08y08 t on delay at v in,max = 12v (ch1) figure 40. apc08m08 t on delay at v in,max = 12v. figure 41. apc08k08 t on delay at v in,max = 12v. figure 42. apc08j08 t on delay at v in,max = 12v.
technical reference note (apc08) model: apc08 series sheet 18 of 23 october 4, 2004 - revision 03 young?s stability curves gain margin _______ 0db ______ 10db ______ 20db ______ 30db ______ 40db ______ 50db 100 1 . 10 3 1 . 10 4 1 . 10 5 1 . 10 6 1 . 10 7 1 . 10 6 1 . 10 5 1 . 10 4 1 . 10 3 0.01 0.1 1 10 frequency impedance magnitude ohms 100 1 . 10 3 1 . 10 4 1 . 10 5 1 . 10 6 200 150 100 50 0 50 100 150 200 frequency phase figure 43. ysc - gain margin response to determine system stability at other load condition.
technical reference note (apc08) model: apc08 series sheet 19 of 23 october 4, 2004 - revision 03 young?s stability curves phase margin 100 1 . 10 3 1 . 10 4 1 . 10 5 1 . 10 6 1 . 10 4 1 . 10 3 0.01 0.1 1 10 impedance magnitude ( ohms ) 100 1 . 10 3 1 . 10 4 1 . 10 5 1 . 10 6 150 100 50 0 50 frequency impedance phase angle ( degrees ) ________ 0 _______ 15 _______ 30 _______ 45 _______ 60 _______ 75 _______90 figure 44. ysc - phase margin response to determine system stability at other load conditions.
technical reference note (apc08) model: apc08 series sheet 20 of 23 october 4, 2004 - revision 03 mechanical specifications outline drawing parameter device symbol min typ max unit dimension all l - - 1.300 (33 .02) in (mm) w - - 0.530 (13.46) in (mm) h - - 0.290 ( 7.36) in (mm) weight all - - 5 (0.16) 10 (0.32) g (oz) recommended pick - up point pind / pin dimension nominal pin dimension 0.055 x 0.102 [in] sugges ted pad dimensions 0.070 x 0.110 [in] figure 46. mechanical outline (in inches). typical figure 45. pad layout outline (in mm).
technical reference note (apc08) model: apc08 series sheet 21 of 23 october 4, 2004 - revision 03 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 recommended location for pick and place the flat top surface of the large inductor (topside of the b oard) provides a versatile and convenient way of picking up the module (see figure 46). 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 t o 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 47. profil e 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 desolder ed 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 48 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" h eight figure 48. module label apc08mmmfff yywwdppll ? ? ? figure 47. recommended reflow profile.
technical reference note (apc08) model: apc08 series sheet 22 of 23 october 4, 2004 - revision 03 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 300pcs. the tray can hold 33 modules max. please refer to figure 49 for the carrier dimensions. figure 49. tape/ pocket dimensions figure 50. jedec - style tray dimensions in mm. all dimensions are in mm
technical reference note (apc08) model: apc08 series sheet 23 of 23 october 4, 2004 - revision 03 part number coding scheme for ordering a p c 0 8 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 9ma : trim function plus pgood and current sharing j: adding a j suffix indicates jedec style tray packaging w: improved loop bandwidth (for apc08x03 versi on only) please call 1 - 888 - 41 - astec for further inquiries or visit us at www.astecpower.com

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