ATR28XXT

PD-94551D ATR28XXT SERIES HYBRID-HIGH RELIABILITY DC/DC CONVERTER Description The ATR28XXT Series of DC/DC converters provide 30W of output power over the full military temperature range with no derating. These devices are pin compatible with the ATO series converters but offer twice the maximum output power in a lower profile package. A custom CMOS ASIC pulse width modulator operating at a nominal switching frequency of 550KHz combined with a unique magnetic feedback reduces circuit complexity for enhanced reliability. These converters provide 500V input to output isolation and operate in highly efficient single forward mode. The advanced feedback design and high operating frequency provide an extremely wide bandwidth control loop with high gain and phase margin. This results in fast dynamic line and load response as well as superior audio rejection. The control loop is compensated to provide optimum performance over the full military temperature range and over the 16V to 40V input voltage range. These converters are protected against both continuous output short circuits and output overload. Either load fault condition will result in operating in a low power dissipation foldback mode. The converters will shut down for approximately 15ms, then attempt to restart. This cycle will continue indefinitely unless the load fault is corrected. Recovery to normal operation is automatic upon removal of the load fault. Manufactured in a facility full qualified to MIL-PRF-38534, these converters are fabricated utilizing DSCC qualified processes. For available screening options, refer to device screening table in the data sheet. Variations in electrical, mechanical and screening can be limited accomodated. Contact IR Santa Clara with specific requirements. 28V Input, Triple Output ATR Features n n n n n n n n n n 30W Output Power Flexible Output Loading -55°C to +125°C Operation Pin Compatible with ATO 0.410” Maximum Height 16V to 40VDC Input Range 500V Input to Output Isolation High Audio Rejection MIL-STD-704 Compatible Load Fault Protection - Short Circuit and Overload n TTL level Compatible Synchronization n Standard Microcircuit Drawings Available www.irf.com 1 08/06/07 ATR28XXT Series Specifications TCASE = -55°C to +125°C, VIN = +28V ± 5% unless otherwise specified A bsolute Maximum Ratings I nput voltage Power Output Lead temperature S torage temperature T est S TATIC CHARACTERISTICS O UTPUT V oltage1 S ymbol -0.5V to +50VDC Internally limited, 37.5W typical 300°C - 65°C to +135°C C onditions -55° C ≤ T C ≤ + 125 ° C, V IN = 2 8 V DC ± 5%, C L =0, unless otherwise specified A TR2812T Min Max ATR2815T Min Max U nits V OUT C urrent 1,2,3,4 I OUT R ipple 1,5 V RIP IOUT = 0 (main) +25° C over temp. range IOUT = 0 (dual)1 + 25 ° C over temp. range V IN = 16, 28, and 40VDC (main) V IN = 16, 28, and 40VDC (dual)1 V IN = 16, 28, and 40VDC (dual) BW = 20Hz to 2MHz (main) V IN = 1 6, 28, and 40 VDC BW = 20Hz to 2 MHz (dual) V IN = 16, 28, and 40 VDC P OUT = 0 .5, 7.5, 15W (main) V IN = 16, 28, and 40VDC (dual) P OUT = 1 .2/1.5, 7.5 and 15W (dual) V IN = 16, 28, and 40 VDC P OUT = 0 .5, 7.5, 15W (main) V IN = 16, 28, and 40 VDC P OUT = 1 .2/1.5, 7.5, and 15W (dual) IOUT = 0 , inhibit (pin 8) Tied to input return (pin 10) IOUT = 0 , inhibit (pin 8) = open IOUT = 3 000mA (main) P OUT = 1 5W (dual) B W = 20Hz to 2MHz IOUT = 3000mA (main) +25 ° C P OUT = 1 5W (dual) over temp. range Input to output or any pin to case 4.95 4.90 ± 11.88 ± 11.76 100 0.0 5.05 5.10 ± 12.12 ± 12.24 4000 ± 625 60 40 4.95 4.90 ± 14.85 ± 14.70 100 0.0 5.05 5.10 ± 15.15 ± 15.30 4000 ± 500 60 40 V DC V DC V DC V DC mA mA mVp-p mVp-p R EGULATION Line 1,3 V R LINE ± 25 ± 60 ± 50 ± 60 ± 25 ± 75 ± 50 ± 75 L oad 1,3 mV V R LOAD I NPUT Current Ripple Current 4 I IN I RIP 15 75 50 75 72 100 14 9.0 600 700 13 +500 +1000 200 5.0 10 75 72 100 15 75 50 mA mA mAp-p % MΩ E FFICIENCY I SOLATION E FF ISO L oad Fault Power Dissipation 3 S witching Frequency S YNC Frequency Range I nhibit Open Circuit Voltage O utput Response to Step transient Load changes 7 R ecovery Time Step Step transient Load changes 7,8 PD FS F SYNC V OI V O TLOAD T T LOAD (except pin 8)at 500 TC=+25 ° C O verload Short circuit 50% load to/from 100% load no load to/from 50% load 50% load to/from 100% load No load to/from 50% load 50% load to/from 100% load No load to 50% load 50% load to no load 5 00 500 9.0 -500 -1000 500 500 9.0 -500 -1000 14 9.0 600 700 13 +500 +1000 200 5.0 10 W KHz KHz V m Vpk µs ms ms For Notes to Specifications, refer to page 3 2 www.irf.com ATR28XXT Series Specifications TCASE = -55°C to +125°C, VIN = +28V ± 5% unless otherwise specified Absolute Maximum Ratings Input voltage Power Output Soldering temperature Temperature Range 6 -0.5V to +50VDC Internally limited, 37.5W typical 300°C for 10 seconds Operating case temperature Storage case temperature Conditions -55°C ≤ TC ≤ +125°C, VIN = 28 VDC ±5%, CL=0, unless otherwise specified ATR2812T Min Max -55°C to +135°C -65°C to +135°C ATR2815T Min Max Units Test Symbol Output Response to Transient step9 Line changes10 Recovery Time8 Transient step9 Line changes10 Turn on Overshoot1 Turn on Delay 1, 11 Load Fault Recovery10 Device weight VOTLINE TTLINE VTonOS TonD TRLF Input step 16 from/to 40 VDC IOUT = 3000mA (main) POUT = 15W (dual) Input step 16 from/to 40 VDC IOUT = 3000mA (main) POUT = 15W (dual) IOUT = 0, and 3000mA (main) POUT = 0, 15W (dual) IOUT = 0, 3000mA (main) POUT = 0, 15W (dual) ±1500 ±1500 mV pk 10 1000 25 25 65 10 1000 25 25 65 ms mV pk ms ms g Notes to Specifications Tested at each output. Parameter guaranteed byline and load regulation tests. Although operation with no load is permissible, light loading on the main (+5V) output may cause the output voltage of the auxiliary outputs (± 12V or ±15V) to drop out of regulation. It is therefore recommended that at least 100mA or 20% of the output power, whichever is greater, be taken from the main (+5V) output and at least 50mA (or ±12V: 1.2W, ±15V: 1.5W) of the output power is taken from the auxiliary ( ±12V or ± 15V) . 4. Total combined output power –30W. 5. Bandwidth guaranteed by design. Tested for 20KHz to 2MHz. 6. An overload is that condition with a load in excess of the rated load but less than that necessary to trigger the overload protection circuit and is the condition of maximum power dissipation. 7. Load step transition time between 2.0 µs and 10µs. 8. Recovery time is measured from the initiation of the transient to where V OUT has returned to within ± 1.0% of VOUT at 50% load. 9. Input step transition time between 2.0 µs to 10 µs. 10. Parameter shall be tested as part of design characterization and after design or process changes. Thereafter parameters shall be guaranteed to the limits specified in the table. 11. 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 8) while power is applied to the input. 1. 2. 3. www.irf.com 3 ATR28XXT Series Block Diagram 5 +Vout +Input 1 EMI Filter Tracking Regulator Enable Input 8 Case 7 Sync Input 9 Primary Housekeeping Supply 4 -Vout 2 +5Vdc Output Drive Pulse Width FB Modulator CS Error Amp & Ref 3 Output Return Input Return 10 Standard Microcircuit Drawing Equivalence Table Standard Microcircuit Drawing Number 5962-92159 5962-93158 Vendor Cage Code 52467 52467 IR Standard Part Number ATR2815T ATR2812T 4 www.irf.com ATR28XXT Series Mechanical Outlines 1.000 0.040 D X 0.26 L Pins 0.05 10 1 9 2 4 X 0.400 =1.600 1.95 2.360 2.700 Max 3 8 4 6 7 5 0.410 Max 1.350 Max Pin Designation Pin # 1 2 3 4 5 6 7 8 9 10 Designation + Input +5Vdc Output Output Return - Dual Output + Dual Output NC Case Ground Enable Input Sync Input Input Return www.irf.com 5 ATR28XXT Series Device Screening Requirement Temperature Range Element Evaluation Non-Destructive Bond Pull Internal Visual Temperature Cycle Constant Acceleration PIND Burn-In Final Electrical ( Group A ) PDA Seal, Fine and Gross Radiographic External Visual MIL-PRF-38534 2023 2017 1010 2001, Y1 Axis 2020 1015 MIL-PRF-38534 & Specification MIL-PRF-38534 1014 2012 2009 N/A Cond A N/A N/A Cond A, C N/A Yes MIL-STD-883 Method No Suffix N/A N/A ES d HB CH -55°C to +125°C Class H N/A Yes Cond C 3000 Gs N/A -55°C, +25°C, +125°C 10% Cond A, C N/A Yes -20°C to +85°C -55°C to +125°C N/A N/A Yes Cond B 500 Gs N/A e -55°C to +125°C N/A N/A Yes Cond C 3000 Gs N/A -55°C, +25°C, +125°C N/A Cond A, C N/A Yes c N/A N/A N/A N/A 25°C 48 hrs@hi temp 25°C d 160 hrs@125°C 160 hrs@125°C c Notes:  Best commercial practice ‚ Sample tests at low and high temperatures ƒ -55°C to +105°C for AHE, ATO, ATW Part Numbering ATR 28 15 T F /CH Model Input Voltage Nominal 28 = 28V Screening Level Package Style Output (Please refer to Screening Table) No Suffix, ES, HB, CH F = Flange Blank = Non-Flanged T = Triple Output Voltage 12 = 5V ±12V 15 = 5V ±15V WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, Tel: (310) 252-7105 IR SANTA CLARA: 2270 Martin Av., Santa Clara, California 95050, Tel: (408) 727-0500 Visit us at www.irf.com for sales contact information. Data and specifications subject to change without notice. 08/2007 6 www.irf.com