ASA28XXD

PD-94540A ASA28XXD SERIES 28V Input, Dual Output HYBRID-HIGH RELIABILITY DC/DC CONVERTER Description The ASA28XXD 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 feed back 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-704 input requirements offering full performance over a 16V to 40V input range. Output Power of up to 5W is available for either balanced or unbalanced loads. 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 400µA. The open circuit voltage of the inhibit pin is 11.5 ± 0.5V. Manufactured in a facility fully qualified to MIL-PRF38534, 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 accommodated. Extensive computer simulation using complex modeling enables rapid design modification to be provided. Contact IR Santa Clara with specific requirements. ASA Features Up To 5.0W Output Power ±5V, ±12V, ±15V Outputs High Reliability Wide Input Voltage Range -16V To 40V Indefinite Short Circuit and Overload Protection Popular Industry Standard Pin-Out Military Screening Parallel Seam Welded Package No External Capacitors Required Input Voltage Surge Protected to MIL-STD-704 Under Voltage Lockout Standard Microcircuit Drawings Available www.irf.com 01/11/07 1 ASA28XXD Series Specifications Absolute Maximum Ratings Input voltage Power output Soldering temperature Operating case temperature Storage case temperature Conditions -55° ≤ TC ≤+125°C V IN = 2 8V dc ±5% C L = 0 unless otherwise specified IOUT = 0 1, 2 -0.5V to +50VDC Continous, 80V, 100 msec Internally limited ( 6.5W typical ) 300°C for 10 seconds -55°C to +125°C -65°C to +135°C ASA2805D/XX Group A Subgroups 1 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 Min ±4.95 ±4.90 200 Max ±5.05 ±5.10 1000 470 50 ASA2812D/XX Min ±11.88 ±11.76 84 Max ±12.12 ±12.24 333 200 50 ASA2815D/XX Min ±14.85 ±14.70 67 Max ±15.15 ±15.30 267 290 50 mA TEST Output voltage Output current Unit V VIN = 16, 28, and 40 V dc either output 3, 4 Output ripple voltage L ine regulation 4 VIN = 16, 28 and 40 V dc VIN = 16, 28, and 40 V dc IOUT = 0 , 50%, 100% IMAX mV PP mV L oad regulation 4 VIN = 16, 28, and 40 V dc IOUT = 0 , 50%, 100% IMAX 20% to 80% load change IOUT = 0 Pin 5 connected to pin 7 IOUT = 0 P in5 open 1, 2, 3 50 50 50 mV C ross regulation Input current 5 1, 2, 3 15 12 60 8.0 12 60 100 71 68 100 200 71 68 100 8.0 12 60 100 % 1, 2, 3 mA Input ripple current E fficiency Isolation 4 3, 4 IOUT = IMAX IOUT = IMAX Input to output or any pin to case (except pin 8) at 500 V dc, Tc = +25° C 1, 2, 3 1, 3 2 1 4 1, 2, 3 4, 5, 6 1 00% IMAX 50% IMAX 1 00% IMAX 50% IMAX 4, 5, 6 4, 5, 6 500 -400 -800 70 66 100 200 100 mA PP % MΩ 200 4.0 2.0 µF W KHz C apacitive load 6, 7 N o effect on dc performance, total for both outputs Overload 8 P ower dissipation load fault 4 4 .0 2.0 600 +400 +800 1 00 2000 500 -400 -800 4.0 2.0 600 +400 +800 100 2000 - 750 +750 -750 500 -400 -800 Short circuit S witching frequency IOUT = IMAX 4, 9 600 +400 Output response to step transient load changes R ecovery time, step transient load changes 4 , 9, 10 IOUT = 5 0% IOUT = 0 IOUT = 5 0% IOUT = 0 mV pk +800 100 2000 +750 mV pk µs Output response transient step line changes 4 , 7, 11 VIN = 16 40Vdc,IOUT= IMAX 4, 5, 6 -750 +750 R ecovery time transient step line changes 4 , 7, 10, 11 4 VIN=16 4 0Vdc, IOUT= IMAX 4, 5, 6 1200 1200 1200 µs Turn on overshoot Turn on delay IOUT = 0 a nd IMAX IOUT = 0 a nd IMAX 4, 5, 6 4, 5, 6 4, 5, 6 600 25 25 600 25 25 600 25 25 mV pk ms ms 4 , 12 7 L oad fault recovery For Notes to Specifications, refer to page 3 2 www.irf.com ASA28XXD Series Notes to Specifications 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. Parameter guaranteed by line, load, and cross regulation tests. Up to 80% of full power is available from either output provided the total output does not exceed 5W. Bandwidth of DC to 20MHz is guaranteed by design. Tested for 20KHz to 2MHz. Load current split equally between +V OUT and -VOUT . 1.0W load on output under test, 1.0W to 4.0W load change on other output. 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 circuitry, appearing as a short circuit during turn-on. Parameter shall be tested as part of design characterization and after design or process changes. Thereafter, parameters shall be guaranteed to the limits specified. An overload is a condition with a load in excess of rated but less than that necessary to trigger the short circuit protection and is the condition of maximum power dissipation. Load step transition time between 2 µs and 10µs. Recovery time is measured from the initiation of the transient to where V OUT has returned to within ±1% of V OUT at 50% load. Input step transition time between 2 µs and 10 µs. Turn-on delay time measurements is for either a step application of power at the input or the removal of ground connection from enable pin (pin 5) with power applied to the input. Block Diagram +Input 6 +Output 1 Output Return 2 -Output 3 Input Return 7 Inhibit 5 Error Amplifier Case 8 Controller www.irf.com 3 ASA28XXD Series Mechanical Outline 1.075 0.800 0.270 1 2 3 4 5 1.075 0.800 ±.005 8 7 6 0.025 ± .003 Dia Pins 0.220 Pin Designation Pin # 1 2 3 4 5 6 7 8 Designation + Output Output Return - Output NC Inhibit + Input Input Return Case Ground Standard Microcircuit Drawing Equivalence Table Standard Microcircuit Drawing Number 5962-94649 5962-95648 IR Standard Part Number ASA2815D ASA2812D 4 www.irf.com ASA28XXD 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 N/A N/A N/A N/A 25°C MIL-STD-883 Method No Suffix N/A N/A ES N/A N/A Yes Cond B 500 Gs N/A 48 hrs@hi temp 25°C HB 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 CH 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 -55°C to +125°C -55°C to +125°C 160 hrs@125°C 160 hrs@125°C Notes: Best commercial practice Sample tests at low and high temperatures -55°C to +105°C for AHE, ATO, ATW Part Numbering ASA 28 05 D /CH Model Input Voltage 28 = 28V Screening Level (Please refer to Screening Table) No Suffix, ES, HB, CH Output Voltage 05 = ±5V 12 = ±12V 15 = ±15V Output D = Dual 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. 01/2007 www.irf.com 5