www.irf.com 1 high reliability hybrid dc-dc converters asap series description up to 6.0 watt output power availabe in single and dual output configurations single outputs: 5v, 12v and 15v dual outputs:
high reliability wide input voltage range, 15 to 50 volts indefinite short circuit and overload protection popular industry standard pin-out military screening available parallel seam welded package no external capacitors required input voltage surge protected to mil-std-704a 80v, 1 second under voltage lockout features asap 28v input, single and dual output the asap series of dc-dc converters are high reliability thick film hybrid converters that use flyback topology operating at a nominal frequency of 550khz. high input to output isolation is achieved through the use of transformers in the flyback power and feedback circuits. the advanced feedback design provides fast loop response for superior line and load transient characteristics and offers greater reliability than devices incorporating optical feedback circuits. this device is designed to meet mil-std-704d input requirements offering full performance over a wide 15 to 50 volt input range and output power of up to 6.0 watts. connecting the inhibit pin (pin 5) to the input common (pin 7) will cause the converter to shut down. it is recommended that the inhibit pin be driven by an open collector device capable of sinking at least 400 a. the open circuit voltage of the inhibit pin is 11.5 0.5 volts. these converters are manufactured in a facility fully qualified to mil-prf-38534. all processes used to manufacture these converters have been qualified thereby enabling international rectifier to deliver fully compliant devices. four standard temperature grades are offered with the screening options. refer to screening level section. the ch grade converters are fully compliant to mil-prf-38534 for class h. the hb grade converters are processed with the same screening as the ch grade, but do not have class h element evaluation as required by mil-prf-38534. these two grades are fully tested and operate over the full military temperature range without derating of output power. a commercial grade is also available. variations in electrical, mechanical and screening requirements can be accommodated. extensive computer simulation using complex modeling allows design modifications to be examined. contact ir san jose with specific requirements. pd-97731
2 www.irf.com asap series for notes to specifications, refer to page 3 absolute maximum ratin g s input voltage -0.5v to 50v continous, 80v for 1 second power output internally limited soldering temperature 300c for 10 seconds temperature range operating -55c to +125c case storage -65c to +150c asap2805s/xx asap2812s/xx asap2815s/xx test conditions -55 t c +125c v in = 28v dc 5% c l = 0 unless otherwise specified group a subgroups min max min max min max unit 1 4.95 5.05 11.88 12.12 14.85 15.15 output voltage i out = 0 2, 3 4.90 5.10 11.76 12.24 14.70 15.30 v output current 1 v in = 15, 28, and 50 v dc 1, 2, 3 1200 500 400 ma 1 60 60 60 output ripple voltage 2 v in = 15, 28 and 50 v dc 2, 3 100 100 100 mv pp 1 25 25 25 line regulation v in = 15, 28, and 50 v dc i out = 0, 50%, 100% i max 2, 3 50 50 50 mv 1 25 25 25 load regulation v in = 15, 28, and 50 v dc i out = 0, 50%, 100% i max 2, 3 50 50 50 mv i out = 0 pin 5 to pin 7 18 18 18 input current i out = 0 pin5 open 1, 2, 3 50 50 50 ma input ripple current 2 i out = i max 1, 2, 3 100 100 100 ma pp 1 71 71 efficiency i out = i max 2, 3 66 68 68 % isolation - input to output or any pin to case v test 500 vdc, tc= +25c 1 100 100 100 m ? capacitive load 3, 4 no effect on dc performance, tc = +25c 4 500 200 200 f overload 5 5.0 5.0 5.0 power dissipation, load fault short circuit 1, 2, 3 2.0 2.0 2.0 w switching frequency 4 i out = i max 4, 5, 6 500 600 500 600 500 600 khz 4 -300 +300 ? i max i max 5, 6 -450 +450 -450 +450 -450 +450 4 -500 +500 output response to step transient load changes 6 0 ma i max 5, 6 -750 +750 -750 +750 -750 +750 mv pk i out = i max 200 100 100 s recovery time, step transient load changes 0 ma ? i max 4, 5, 6 1.0 1.0 1.0 ms output response transient step line changes 4 8 input step 15 50 v dc i out = i max 4, 5, 6 -500 500 -1000 1000 -1000 1000 mv pk recovery time transient step line changes 4, 7, 8 input step 15 50 v dc i out = i max 4, 5, 6 800 800 800 s turn on overshoot i out = 0 ma, i max 4, 5, 6 600 750 750 mv pk turn on delay 9 i out = 0 or i max 4, 5, 6 20 25 25 ms load fault recovery 4 4, 5, 6 20 25 25 ms
www.irf.com 3 asap series notes to specifications for tables on page 2 1. parameter guaranteed and measured during line and load regulation tests. 2. bandwidth guaranteed by design. tested for 20 khz to 2.0 mhz. 3. capacitive load may be any value from 0 to the maximum limit without compromising dc performance. a capacitive load in exces s of the maximum limit will not disturb loop stability but may interfere with the operation of the load fault detection circuitry , appearing as a short circuit during turn-on. 4. parameter shall be tested as part of design characterization and after design or process changes. 5. an overload is that condition of load in excess of rated load but less than that necessary to trigger the short circuit prote ction and is the condition of maximum power dissipation. 6. load step transition time between 2.0 and 10 microseconds. 7. recovery time is measured from the initiation of the transient to where v out has returned to within 1.0 percent of v out at 50% load. 8. input step transition time between 2.0 and 10 microseconds. 9. turn-on delay time measurement is for either a step application of power at the input or the removal of a ground signal from the inhibit pin (pin 2) while power is applied to the input.
4 www.irf.com asap series absolute maximum ratin g s input voltage -0.5v to 50v continous, 80v for 1 second power output internally limited soldering temperature 300c for 10 seconds temperature range operating -55c to +125c case storage -65c to +150c for notes to specifications, refer to page 5 asap2805d/xx asap2812d/xx asap2815d/xx test conditions -55 t c +125c v in = 28v dc 5% c l = 0 unless otherwise specified group a subgroups min max min max min max unit 1 4.95 5.05 11.88 12.12 14.85 15.15 output voltage i out = 0 2, 3 4.90 5.10 11.76 12.24 14.70 15.30 v output current 1, 2 v in = 15, 28, and 50 vdc either output 1, 2, 3 240 960 100 400 80 320 ma output ripple voltage 3, 4 v in = 15, 28 and 50 vdc 1, 2, 3 100 200 200 mv pp line regulation 4 v in = 15, 28, and 50 vdc i out = 0, 50%, 100% i max 1, 2, 3 50 50 50 mv load regulation 4 v in = 15, 28, and 50 vdc i out = 0, 50%, 100% i max 1, 2, 3 50 50 50 mv cross regulation 5 20% to 80% load change 1, 2, 3 15 8.0 8.0 % i out = 0 pin 5 connected to pin 7 12 12 12 input current i out = 0 pin5 open 1, 2, 3 60 60 60 ma input ripple current 3, 4 i out = i max 1, 2, 3 100 100 100 ma pp 1, 3 70 71 71 efficiency 4 i out = i max 2 66 68 68 % isolation input to output or any pin to case (except pin 8) at 500 vdc, tc = +25 c 1 100 100 100 m ? capacitive load 6, 7 no effect on dc performance, total for both outputs 4 200 200 200 f overload 8 5.0 5.0 5.0 power dissipation load fault short circuit 1, 2, 3 2.0 2.0 2.0 w switching frequency 4 i out = i max 4, 5, 6 500 600 500 600 500 600 khz i out = 50% 100% i max -400 +400 -400 +400 -400 +400 output response to step transient load changes 4, 9 i out = 0 50% i max 4, 5, 6 -800 +800 -800 +800 -800 +800 mv pk i out = 50% 100% i max 100 100 100 recovery time, step transient load changes 4, 9, 10 i out = 0 50% i max 4, 5, 6 2000 2000 2000 s output response transient step line changes 4, 7, 11 v in = 15 50vdc,i out = i max 4, 5, 6 -750 +750 - 750 +750 -750 +750 mv pk recovery time transient step line changes 4, 7, 10, 11 v in = 15 50vdc, i out = i max 4, 5, 6 1200 1200 1200 s turn on overshoot 4 i out = 0 and i max 4, 5, 6 600 600 600 mv pk turn on delay 4, 12 i out = 0 and i max 4, 5, 6 25 25 25 ms load fault recovery 7 4, 5, 6 25 25 25 ms
www.irf.com 5 asap series 1. parameter guaranteed by line, load, and cross regulation tests. 2. up to 80%of full power is available from either output provided the total output does not exceed 6.0 w. 3. bandwidth of dc to 20 mhz is guaranteed by design. tested for 20 khz to 2.0 mhz. 4. load current split equally between +v out and -v out . 5. 1.2 watt load on output under test, 1.2 to 4.8 watt load change on other output. 6. capacitive load may be any value from 0 to the maximum limit without compromising dc performance. a capacitive load in excess of the maximum limit will not disturb loop stability but may interfere with the operation of the load fault detection ci rcuitry, appearing as a short circuit during turn-on. 7. parameter shall be tested as part of design characterization and after design or process changes. thereafter, parameters shal l be guaranteed to the limits specified. 8. an overload is a condition with a load in excess of rated but less than that necessary to trigger the short circuit protectio n and is the condition of maximum power dissipation. 9. load step transition time between 2.0 and 10 microseconds. notes to specifications for table on page 4 10. recovery time is measured from the initiation of the transient to where v out has returned to within 1.0 percent of v out at 50% load. 11. input step transition time between 2.0 and 10 microseconds. 12. turn-on delay time measurements is for either a step application of power at the input or the removal of ground connecti on from enable pin (pin 5) with power applied to the input.
6 www.irf.com asap series single output - block diagram dual output - block diagram controller error amplifier 1 2 8 6 7 5 case return +output inhibit return +input controller error amplifier 1 2 8 6 7 5 case return +output inhibit return +input 3 -output
www.irf.com 7 asap series 0.800 .005 1.075 0.220 0.270 1.075 0.800 0.025 .003 dia pins 12345 6 87 case outline single output - pin designation dual output - pin designation notes: 1) all dimensions are in inches 2) the tolerance for x.xxx = 0.005 pin # designation 1 + output 2 output return 3n/c 4n/c 5 inhibit 6 + input 7 input return 8case pin # designation 1 + output 2 output return 3 - output 4n/c 5 inhibit 6 + input 7 input return 8case
8 www.irf.com asap series part numbering notes: best commercial practice samples tests at low and high temperatures world headquarters: 233 kansas st., el segundo, california 90245, tel: (310) 252-7105 ir san jose: 2520junction avenue, san jose, california 95134, tel: (408) 434-5000 visit us at www.irf.com for sales contact information . data and specifications subject to change without notice. 10/2011 asap 28 05 s /es model nominal input voltage 28 = 28v screening level: (please refer to screening table) no suffix, es, hb, ch output s = single d = dual output voltage 05 = 5v or 5v 12 = 12v or 12v 15 = 15v or 15v device screening requirement mil-std-883 method no suffix es hb ch temerature range -20c to +85c -55c to +125c -55c to +125c -55c to +125c element evaluation mil-prf-38534 class h internal visual 2017 class h class h class h temperature cycle 1010 cond b cond c cond c constant acceleration 2001, y1 axis 500 gs 3000 gs 3000 gs pind 2020 burn-in 1015 48 hrs @ 125c 160 hrs@125c 160 hrs@125c final electrical mil-prf-38534 25c 25c -55c, +25c, -55c, +25c, ( group a ) & specification +125c +125c pda mil-prf-38534 10% 10% seal, fine and gross 1014 cond a cond a, c cond a, c cond a, c radiographic 2012 external visual 2009 yes yes yes
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