ato2800t series hybrid - high reliability triple output dc/dc converters description the ato2800t series of dc/dc converters feature high power density and an extended temperature range for use in military and indus- trial applications. designed to the nominal input requirements of mil-std-704d, these devices have nominal 28vdc inputs with +5v and 12v or +5v and 15v triple outputs to satisfy a wide range of requirements. the circuit design incorpo- rates a pulse width modulated push-pull topology operating in the feed-forward mode at a nominal switching frequency of 250khz. input to output isolation is achieved through the use of transform- ers in the forward and feedback circuits. the advanced feedback design provides fast loop response for superior line and load transient characteristics and offers greater reliability and radiation tolerance than devices incorporating optical feedback circuits. three standard temperature grades are offered. refer to part number section. they are provided in a standard plug-in package for pc mounting or in a flanged package for more severe environ- ments. these converters are manufactured in a facility fully qualified to mil-std-1772. all processes used to manufacture these converters have been qualified to enable advanced analog to deliver compliant devices. two screening grades are available to satisfy a wide range of requirements. the ch grade converters are fully compliant to mil-std-1772 class h. the hb grade converters are processed to full class h screening but do not have class h element evaluation as required by mil-std-1772. both grades are fully tested and operate over the full military temperature range without derating of output power. variations in electrical, mechanical and screening can be accommodated. extensive computer simulation using complex modeling enables rapid design modification to be provided. contact advanced analog with specific requirements. features n 16 to 40 vdc input range (28vdc nominal) n 5v, 12v or 5v, 15v outputs available n indefinite short circuit and overload protection n 15 watts output power n fast loop response for superior transient characteris- tics n operating temperature range from -55c to +125c available n popular industry standard pin-out n resistance seam welded case for superior long term hermeticity n efficiencies up to 81% n shutdown from external signal n 200,000 hour mtbf at 85c
conditions ato2812t ato2815t -55c - tc - +85c, v in = 28 v dc limits limits units test symbol 5%, c l =0, unless otherwise specified min max min max static characteristics output voltage 1 v out i out = 0 (main) t c = 25c 4.95 5.05 4.95 5.05 v over temp 4.90 5.10 4.90 5.10 v i out = 0 (dual) 1 t c = 25c 11.88 12.12 14.85 15.15 v over temp 11.76 12.24 14.70 15.30 v current 1,2,3 i out v in = 16, 28, and 40 v dc (main) 0.0 2000 0.0 2000 ma v in = 16, 28, and 40 v dc (dual) 1 0.0 208 0.0 167 ma ripple voltage 1,4 v rip v in = 16, 28, and 40 v dc (dual) 80 80 mv p-p bw = dc to 2 mhz (main) v in = 16, 28, and 40 v dc 40 40 mv p-p bw = dc to 2 mhz (dual) power 1,2,3 p out v in = 16, 28, and 40 v dc (main) 10 10 w (+dual) 2.5 2.5 w (-dual) 2.5 2.5 w (total) 15 15 w regulation line 1,3 vr line v in = 16, 28, and 40 v dc 25 25 mv i out = 0, 1000, 2000 ma (main) v in = 16, 28, and 40 v dc (dual) t c = 25c 30 35 mv i out = 0, 84, 167 ma (dual) over temp 60 75 mv load 1,3 vr load v in = 16, 28, and 40 v dc 50 50 mv i out = 0, 1000, 2000 ma (main) v in = 16, 28, and 40 v dc 60 75 mv i out = 0, 84, 167 ma (dual) input current i in i out = 0, inhibit (pin 8) 15 15 ma tied to input return (pin 10) i out = 0, inhibit (pin 2) = open 40 40 ma ripple current 4 i rip i out = 2000 ma (main) 50 50 ma p-p i out = 167 ma (dual) bw = dc to 2 mhz efficiency e ff i out = 2000 ma (main) t c = +25c 76 76 % i out = 167 ma (dual) t c = 25c isolation iso input to output or any pin to case (except t c = +25c 100 100 m w pin 7) at 500 v dc , tc = +25c load fault power dissipation 3 p d over load, t c = +25c 5 t c = +25c 8 8 w short circuit, t c = +25c 6 6 w switching frequency f s i out = 2000 ma (main) 225 275 225 275 khz i out = 167 ma (dual) inhibit open circuit v oi 913 913 v voltage notes: 1. tested at each output. 2. parameter guaranteed by line and load regulation tests. 3. at least 20 percent of the total output power should be taken from the (+5 volt) main output. 4. bandwidth guaranteed by design. tested for 20 khz to 2 mhz. 5. an overload is that condition with a load in excess of the rated load but less than that necessary to trigger the short circu it protection and is the condition of maximum power dissipation. 6. above 85c case temperature, derate output power linearly to 0 at 135c case. 2 specifications t case = -55c to +85c, v in = +28 v 5% unless otherwise specified absolute maximum ratings input voltage -0.5 v to +50 v power output internally limited, 17.5w typical soldering 300c for 10 seconds temperature range 6 operating -55c to 115c case storage -65c to +135c
notes: 1. tested at each output. 2. parameter guaranteed by line and load regulation tests. 3. at least 20 percent of the total output power should be taken from the (+5 volt) main output. 4. bandwidth guaranteed by design. tested for 20 khz to 2 mhz. 5. an overload is that condition with a load in excess of the rated load but less than that necessary to trigger the short circu it protection and is the condition of maximum power dissipation. 6. above 105c case temperature, derate output power linearly to 0 at 135c case. 3 specifications t case = -55c to +105c, v in = +28 v 5% unless otherwise specified absolute maximum ratings input voltage -0.5 v to +50 v power output internally limited, 17.5w typical soldering 300c for 10 seconds temperature range 6 operating -55c to 125c case storage -65c to +135c conditions ato2812t/es ato2815t/es -55c - tc - +105c, v in = 28 v dc limits limits units test symbol 5%, c l =0, unless otherwise specified min max min max static characteristics output voltage 1 v out i out = 0 (main) t c = 25c 4.95 5.05 4.95 5.05 v over temp 4.90 5.10 4.90 5.10 v i out = 0 (dual) 1 t c = 25c 11.88 12.12 14.85 15.15 v over temp 11.76 12.24 14.70 15.30 v current 1,2,3 i out v in = 16, 28, and 40 v dc (main) 0.0 2000 0.0 2000 ma v in = 16, 28, and 40 v dc (dual) 1 0.0 208 0.0 167 ma ripple voltage 1,4 v rip v in = 16, 28, and 40 v dc 80 80 mv p-p bw = dc to 2 mhz (main) v in = 16, 28, and 40 v dc 40 40 mv p-p bw = dc to 2 mhz (dual) power 1,2,3 p out v in = 16, 28, and 40 v dc (main) 10 10 w (+dual) 2.5 2.5 w (-dual) 2.5 2.5 w (total) 15 15 w regulation line 1,3 vr line v in = 16, 28, and 40 v dc 25 25 mv i out = 0, 1000, 2000 ma (main) v in = 16, 28, and 40 v dc (dual) t c = 25c 30 35 mv i out = 0, 84, 167 ma (dual) over temp 60 75 mv load 1,3 vr load v in = 16, 28, and 40 v dc 50 50 mv i out = 0, 1000, 2000 ma (main) v in = 16, 28, and 40 v dc 60 75 mv i out = 0, 84, 167 ma (dual) input current i in i out = 0, inhibit (pin 8) 15 15 ma tied to input return (pin 10) i out = 0, inhibit (pin 2) = open 40 40 ma ripple current 4 i rip i out = 2000 ma (main) 50 50 ma p-p i out = 167 ma (dual) bw = dc to 2 mhz efficiency e ff i out = 2000 ma (main) t c = +25c 76 76 % i out = 167 ma (dual) t c = 25c isolation iso input to output or any pin to case (except t c = +25c 100 100 m w pin 7) at 500 v dc , tc = +25c load fault power dissipation 3 p d over load, t c = +25c 5 t c = +25c 8 8 w short circuit, t c = +25c 6 6 w switching frequency f s i out = 2000 ma (main) 225 275 225 275 khz i out = 167 ma (dual) inhibit open circuit v oi 913 913 v voltage
conditions ato2812t/hb ato2815t/hb -55c - tc - +125c, v in = 28 v dc limits limits units test symbol 5%, c l =0, unless otherwise specified min max min max static characteristics output voltage 1 v out i out = 0 (main) t c = 25c 4.95 5.05 4.95 5.05 v over temp 4.90 5.10 4.90 5.10 v i out = 0 (dual) 1 t c = 25c 11.88 12.12 14.85 15.15 v over temp 11.76 12.24 14.70 15.30 v current 1,2,3 i out v in = 16, 28, and 40 v dc (main) 0.0 2000 0.0 2000 ma v in = 16, 28, and 40 v dc (dual) 1 0.0 208 0.0 167 ma ripple voltage 1,4 v rip v in = 16, 28, and 40 v dc 80 80 mv p-p bw = dc to 2 mhz (main) v in = 16, 28, and 40 v dc 40 40 mv p-p bw = dc to 2 mhz (dual) power 1,2,3 p out v in = 16, 28, and 40 v dc (main) 10 10 w (+dual) 2.5 2.5 w (-dual) 2.5 2.5 w (total) 15 15 w regulation line 1,3 vr line v in = 16, 28, and 40 v dc 25 25 mv i out = 0, 1000, 2000 ma (main) v in = 16, 28, and 40 v dc (dual) t c = 25c 30 35 mv i out = 0, 84, 167 ma (dual) over temp 60 75 mv load 1,3 vr load v in = 16, 28, and 40 v dc 50 50 mv i out = 0, 1000, 2000 ma (main) v in = 16, 28, and 40 v dc 60 75 mv i out = 0, 84, 167 ma (dual) input current i in i out = 0, inhibit (pin 8) 15 15 ma tied to input return (pin 10) i out = 0, inhibit (pin 2) = open 40 40 ma ripple current 4 i rip i out = 2000 ma (main) 50 50 ma p-p i out = 167 ma (dual) bw = dc to 2 mhz efficiency e ff i out = 2000 ma (main) t c = +25c 76 76 % i out = 167 ma (dual) t c = 25c isolation iso input to output or any pin to case (except t c = +25c 100 100 m w pin 7) at 500 v dc , tc = +25c load fault power dissipation 3 p d over load, t c = +25c 5 t c = +25c 8 8 w short circuit, t c = +25c 6 6 switching frequency f s i out = 2000 ma (main) 225 275 225 275 khz i out = 167 ma (dual) inhibit open circuit v oi 913 913 v voltage notes: 1. tested at each output. 2. parameter guaranteed by line and load regulation tests. 3. at least 20 percent of the total output power should be taken from the (+5 volt) main output. 4. bandwidth guaranteed by design. tested for 20 khz to 2 mhz. 5. an overload is that condition with a load in excess of the rated load but less than that necessary to trigger the short circu it protection and is the condition of maximum power dissipation. 6. above 125c case temperature, derate output power linearly to 0 at 135c case. 4 specifications t case = -55c to +125c, v in = +28 v 5% unless otherwise specified absolute maximum ratings input voltage -0.5 v to +50 v power output internally limited, 17.5w typical soldering 300c for 10 seconds temperature range 6 operating -55c to 135c case storage -65c to +135c
block diagrams mechanical outline 1.00 (25.400) 1.350 max (34.290) 0.162d 2 places (4.115) 2.700 max (68.580) 1.950 max (49.530) 0.500 12.700 x pin #1 2.360 (59.944) 4 x 0.400 (10.160) 1.600 (40.640) = max 0.040d (1.016) 0.260l (6.604) 1.00 (25.400) 1.345 (34.163) 1.950 max (49.530) 0.500 max 12.700 x pin #1 4 x 0.400 (10.160) 1.600 (40.640) = 0.040d (1.016) 0.260l - 10 plcs (6.604) .050r max 1.350 max (34.290) standard error amp & ref 3 5 4 controller 10 input filter 8 1 regulator & output filter output filter 2 pin designation pin 1 positive input pin 10 input common pin 2 +5v dc output pin 9 n/c pin 3 output common pin 8 inhibit input pin 4 neg. dual output pin 7 case ground (12/15v dc ) pin 5 positive output pin 6 n/c (12/15v dc ) error amp & ref 3 5 4 controller 10 input filter 8 1 regulator & output filter output filter 2 5
ch & hb screening process per mil-std-883c part number ato 28xx t x / xx model temperature range omit for -55c to +85c input voltage es - -55c to +105c hb - -55c to +125c output voltage ch- -55?c to +125?c 12 - 15v dc package option 15 - 15v dc omit for standard f - flange triple output standardized military drawing cross reference standardized vendor vendor military drawing cage similar number pin 5962-9095401hxx 52467 ato2815t/ch 5962-9095401hzx 52467 ato2815tf/ch 5962-9160201hxx 52467 ato2812t/ch 5962-9160201hzx 52467 ato2812tf/ch ato2815t efficiency 6 efficiency (%) output power (watts) 0 5 10 15 20 test inspection method conditlon pre-seal internal visual 2017 stabilization bake 1008 c temperature cycling 1010 c constant acceleration 2001 a, y1 direction burn-in 1015 tc = +125 c final electrical test tc = -55 ,+25,+125c external visual 2009 gross leak 1014 c fine leak 1014 a * ch includes element evaluation 85 80 75 70 65 test inspection method constant acceleration 2001, 500g's burn-in 1015, 96 hrs. final electrical 25 c only * non-suffixed es screening process same as hb screening except as follows:
notes 7
mil-std-1772 qualified 2270 martin avenue santa clara ca 95050-2781 (408) 988-4930 fax (408) 988-2702 9502 notes ? lambda advanced analog the information in this data sheet has been carefully checked and is believed to be accurate, however, no responsibility is assumed for possible errors. the specifications are subject to change without notice.
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