PD - 94582A ATO28XXT SERIES 28V Input, Triple Output HYBRID-HIGH RELIABILITY DC/DC CONVERTER Description The ATO28XXT Series of DC/DC converters feature high power density and an extended temperature range for use in military and industrial 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 incorporates 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 transformers in the forward and feedback circuits. Features 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 Numbering section. They are provided in a standard plug-in package for PC mounting or in a flanged package for more severe environments. 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 modest design modifications to be accommodated. Contact IR Santa Clara with specific requirements. www.irf.com ATO 16V to 40VDC Input Range (28VDC Nominal) 5V, ±12V or 5V, ±15V Outputs Available Indefinite Short Circuit and Overload Protection 15W Output Power Fast Loop Response for Superior Transient Characteristics Operating Temperature Range from -55°C to +125°C Available Popular Industry Standard Pin-out Resistance Seam Welded Case for Superior Long Term Hermeticity Efficiencies up to 81% Shutdown from External Signal 200,000 Hour MTBF at 85°C Standard Microcircuit Drawings Available 1 01/12/07 ATO28XXT Series Specifications TCASE = -55°C to +85°C, VIN = +28V ± 5% unless otherwise specified Absolute Maximum Ratings Input voltage Power Output Soldering temperature -0.5V to +50VDC Internally limited, 17.5W typical 300°C for 10 seconds Operating case temperature Storage case temperature Temperature Range 6 SYMBOL TEST STATIC CHARACTERISTICS OUTPUT 1 Voltage VOUT Condition -55°C ≤ TC ≤ +85°C, VIN = 28 VDC ±5%, CL=0 unless otherwise specified IOUT = 0 (main) IOUT = 0 (dual) Current Power IOUT 1,4 1,2,3 VRIP POUT REGULATION Line 1,3 VRLINE Load 1,3 VRLOAD INPUT Current Ripple Current TC = 25°C Over Temp TC = 25°C Over Temp 1,2,3 Ripple Voltage 1 IIN 4 IRIP EFFICIENCY EFF ISOLATION ISO Load Fault 3 Power Dissipation Switching Frequency PD Inhibit Open Circuit Voltage VOI FS VIN = 16, 28, and 40 VDC (main) 1 VIN = 16, 28, and 40 VDC (dual) VIN = 16, 28, and 40 VDC (dual) BW = DC to 2 MHz (main) VIN = 16, 28, and 40 VDC BW = DC to 2 MHz (dual)) VIN = 16, 28, and 40 VDC (main) (+dual) (-dual) (total) VIN = 16, 28, and 40 VDC IOUT = 0, 1000, 2000mA (main) VIN = 16, 28, and 40 VDC (dual) IOUT = 0, ±84, ±167mA (dual) VIN = 16, 28, and 40 VDC IOUT = 0, 1000, 2000mA (main) VIN = 16, 28, and 40 VDC IOUT = 0, ±84, ±167mA (dual) IOUT = 0, Inhibit (pin 8) Tied to input return (pin 10) IOUT = 0, inhibit (pin 2) = open IOUT = 2000 mA (main) IOUT = ±167mA (dual) BW = DC to 2MHz IOUT = 2000mA (main) IOUT = ±167mA (dual) Input to output or any pin to case (except pin 7) at 500 VDC Overload Short Circuit IOUT = 2000mA (main) IOUT = ±167mA (dual) -55°C to +115°C -65°C to +135°C ATO2812T ATO2815T Min Max Min Max Units 4.95 4.90 ±11.88 ±11.76 0.0 0.0 5.05 5.10 ±12.12 ±12.24 2000 ±208 80 4.95 4.90 ±14.85 ±14.70 0.0 0.0 5.05 5.10 ±15.15 ±15.30 2000 ±167 80 V V V V mA mA mVp-p 40 mVp-p 40 TC = 25°C Over Temp TC = 25°C 76 TC = 25°C 100 25 25 ±30 ±60 50 ±35 ±75 50 ±60 ±75 15 15 mA 40 50 40 50 mA mAp-p mV 76 % 100 225 8.0 6.0 275 9.0 13 TC = 25°C W W W W 10 2.5 2.5 15 10 2.5 2.5 15 MΩ 225 8.0 6.0 275 W KHz 9.0 13 V Notes to Specifications 1. 2. 3. 4. 5. Tested at each output. Parameter guaranteed by line and load regulation tests. At least 20 percent of the total output power should be taken from the (+5V) main output. Bandwidth guaranteed by design. Tested for 20KHz to 2.0MHz. An overload is that condition with a load in excess of the rated load but less than that necessary to trigger the short circuit protection and is the condition of maximum power dissipation. Above 85°C case temperature, derate output power linearly to 0 at 115°C case. 6. 2 www.irf.com ATO28XXT Series Specifications TCASE = -55°C to +105°C, VIN = +28V ± 5% unless otherwise specified A bso lu te M axim u m R ating s In pu t vo ltag e P ow er O utp ut S old erin g te m p era ture -0.5 V to +5 0V D C Inte rna lly lim ited , 17 .5W typ ica l 30 0°C for 1 0 secon ds O p era ting ca se tem pe ratu re Sto rag e case te m p era ture T em pe ratu re R an ge 6 TEST STATIC CHARACTERISTICS OUTPUT Voltage 1 SYMBOL VOUT Condition -55°C ≤ TC ≤ +105°C, VIN = 28 V DC ±5%, C L=0 unless otherwise specified IOUT = 0 (main) IOUT = 0 (dual) Current 1,2,3 Ripple Voltage 1,4 Power 1,2,3 IOUT VRIP POUT REGULATION Line 1,3 VR LINE Load 1,3 VR LOAD INPUT Current IIN Ripple Current 4 IRIP EFFICIENCY EFF ISOLATION ISO Load Fault Power Dissipation 3 1 TC = 25°C Over Temp TC = 25°C Over Temp VIN = 16, 28, and 40 VDC (main) VIN = 16, 28, and 40 VDC (dual)1 VIN = 16, 28, and 40 VDC BW = DC to 2 MHz (main) VIN = 16, 28, and 40 VDC BW = DC to 2 MHz (dual)) VIN = 16, 28, and 40 VDC (main) (+dual) (-dual) (total) VIN = 16, 28, and 40 VDC IOUT = 0, 1000, 2000mA (main) VIN = 16, 28, and 40 VDC (dual) IOUT = 0, ±84, ±167mA (dual) VIN = 16, 28, and 40 VDC IOUT = 0, 1000, 2000mA (main) VIN = 16, 28, and 40 VDC IOUT = 0, ±84, ±167mA (dual) IOUT = 0, Inhibit (pin 8) Tied to input return (pin 10) IOUT = 0, inhibit (pin 2) = open IOUT = 2000 mA (main) IOUT = ±167mA (dual) BW = DC to 2MHz IOUT = 2000mA (main) IOUT = ±167mA (dual) TC = ±25°C Input to output or any pin to case (except pin 7) at 500 VDC PD Overload, TC = +25°C5 Short Circuit, TC = +25°C FS IOUT = 2000mA (main) IOUT = ±167mA (dual) -55 °C to +1 25 °C -65 °C to +1 35 °C ATO2812T/ES ATO2815T/ES Min Max Min Max Units 4.95 4.90 ±11.88 ±11.76 0.0 0.0 5.05 5.10 ±12.12 ±12.24 2000 ±208 80 4.95 4.90 ±14.85 ±14.70 0.0 0.0 5.05 5.10 ±15.15 ±15.30 2000 ±167 80 V V V V mA mA mVp-p 40 10 2.5 2.5 15 TC = 25°C Over Temp 40 10 2.5 2.5 15 mVp-p W W W W 25 25 ±30 ±60 50 ±35 ±75 50 ±60 ±75 15 15 mA 40 50 40 50 mA mAp-p mV TC = 25°C 76 76 % TC = 25°C 100 100 MΩ 8.0 6.0 TC = 25°C 8.0 6.0 W Switching Frequency Inhibit Open Circuit Voltage VOI 225 275 225 275 KHz 9.0 13 9.0 13 V Notes to Specifications 1. 2. 3. 4. 5. 6. Tested at each output. Parameter guaranteed by line and load regulation tests. At least 20 percent of the total output power should be taken from the (+5V) main output. Bandwidth guaranteed by design. Tested for 20KHz to 2.0MHz. An overload is that condition with a load in excess of the rated load but less than that necessary to trigger the short circuit protection and is the condition of maximum power dissipation. Above 105°C case temperature, derate output power linearly to 0 at 125°C case www.irf.com 3 ATO28XXT Series Specifications TCASE = -55°C to +125°C, VIN = +28V ± 5% unless otherwise specified A bso lu te M axim u m R ating s In pu t vo ltag e P ow er O utp ut S old erin g te m p era ture -0.5 V to +5 0V D C Inte rna lly lim ited , 17 .5W typ ica l 30 0°C for 1 0 secon ds O p era ting ca se tem pe ratu re Sto rag e case te m p era ture T em pe ratu re R an ge 6 TEST SYMBOL STATIC CHARACTERISTICS OUTPUT 1 Voltage VOUT Condition -55°C ≤ TC ≤+125°C, VIN = 28 VDC ±5%, CL=0 unless otherwise specified IOUT = 0 (main) IOUT = 0 (dual)1 Current 1,2,3 Ripple Voltage Power IOUT 1,4 VRIP 1,2,3 POUT REGULATION 1,3 Line Load VRLINE 1,3 VRLOAD INPUT Current Ripple Current IIN 4 IRIP EFFICIENCY EFF ISOLATION ISO Load Fault Power Dissipation 3 TC = 25°C Over Temp TC = 25°C Over Temp VIN = 16, 28, and 40 VDC (main) 1 VIN = 16, 28, and 40 VDC (dual) VIN = 16, 28, and 40 VDC BW = DC to 2 MHz (main) VIN = 16, 28, and 40 VDC BW = DC to 2 MHz (dual)) VIN = 16, 28, and 40 VDC (main) (+dual) (-dual) (total) VIN = 16, 28, and 40 VDC IOUT = 0, 1000, 2000mA (main) VIN = 16, 28, and 40 VDC (dual) IOUT = 0, ±84, ±167mA (dual) VIN = 16, 28, and 40 VDC IOUT = 0, 1000, 2000mA (main) VIN = 16, 28, and 40 VDC IOUT = 0, ±84, ±167mA (dual) IOUT = 0, Inhibit (pin 8) Tied to input return (pin 10) IOUT = 0, inhibit (pin 2) = open IOUT = 2000 mA (main) IOUT = ±167mA (dual) BW = DC to 2MHz IOUT = 2000mA (main) IOUT = ±167mA (dual) TC = ±25°C Input to output or any pin to case (except pin 7) at 500 VDC PD Overload, TC = +25°C5 Short Circuit, TC = +25°C FS IOUT = 2000mA (main) IOUT = ±167mA (dual) -55 °C to +1 35 °C -65 °C to +1 35 °C ATO2812T/HB ATO2815T/HB Min Max Min Max Units 4.95 4.90 ±11.88 ±11.76 0.0 0.0 5.05 5.10 ±12.12 ±12.24 2000 ±208 80 4.95 4.90 ±14.85 ±14.70 0.0 0.0 5.05 5.10 ±15.15 ±15.30 2000 ±167 80 V V V V mA mA mVp-p 40 10 2.5 2.5 15 TC = 25°C Over Temp 40 mVp-p 10 2.5 2.5 15 W W W W 25 25 ±30 ±60 50 ±35 ±75 50 ±60 ±75 15 15 mA 40 50 40 50 mA mAp-p mV TC = 25°C 76 76 % TC = 25°C 100 100 MΩ 8.0 6.0 TC = 25°C 8.0 6.0 W Switching Frequency Inhibit Open Circuit Voltage VOI 225 275 225 275 KHz 9.0 13 9.0 13 V Notes to Specifications 1. 2. 3. 4. 5. Tested at each output. Parameter guaranteed by line and load regulation tests. At least 20 percent of the total output power should be taken from the (+5V) main output. Bandwidth guaranteed by design. Tested for 20KHz to 2.0MHz. An overload is that condition with a load in excess of the rated load but less than that necessary to trigger the short circuit protection and is the condition of maximum power dissipation. Above 125°C case temperature, derate output power linearly to 0 at 135°C case 6. 4 www.irf.com ATO28XXT Series Block Diagram 5 + Dual Vout Regulator 4 - Dual Vout EMI Filter 1 2 +5V out +Input 3 Output Return Drive 1 8 Enable Input Pulse Width Drive 2 Modulator Error Amp & Reference FB Input Return 10 Standard Microcircuit Drawing Equivalence Table Standard Microcircuit Drawing Number 5962-90954 5962-91602 www.irf.com Vendor Cage Code 52467 52467 IR Standard Part Number ATO2815T ATO2812T 5 ATO28XXT Series Mechanical Outlines Flanged Non-Flanged 1.000 0.05 7 10 8 3 4 6 2 5 1.350 Max 4 X 0.400 =1.600 1 1.950 Max 9 0.040 D X 0.26 L Pins 1.95 0.500 Max 0.500 Max 2.700 Max 2.360 1.350 Max Pin Designation Pin # 6 Designation 1 + Input 2 +5V Output 3 Output Return 4 - Dual Output 5 + Dual Output 6 NC 7 Case Ground 8 Enable Input 9 NC 10 Input Return www.irf.com ATO28XXT Series Device Screening Requirement MIL-STD-883 Method Non-Destructive Bond Pull ES HB CH -20°C to +85°C -55°C to +125°C -55°C to +125°C -55°C to +125°C Temperature Range Element Evaluation No Suffix MIL-PRF-38534 N/A N/A N/A Class H 2023 N/A N/A N/A N/A Internal Visual 2017 Yes Yes Yes Temperature Cycle 1010 N/A Cond B Cond C Cond C Constant Acceleration 2001, Y1 Axis N/A 500 Gs 3000 Gs 3000 Gs N/A N/A PIND 2020 N/A N/A Burn-In 1015 N/A 48 hrs@hi temp Final Electrical MIL-PRF-38534 25°C 25°C ( Group A ) & Specification PDA MIL-PRF-38534 N/A Seal, Fine and Gross 1014 Radiographic 2012 External Visual 2009 160 hrs@125°C 160 hrs@125°C -55°C, +25°C, -55°C, +25°C, +125°C +125°C N/A N/A 10% Cond A Cond A, C Cond A, C Cond A, C N/A N/A N/A N/A Yes Yes Yes Notes: Best commercial practice Sample tests at low and high temperatures -55°C to +105°C for AHE, ATO, ATW Part Numbering ATO 28 15 T F /CH Model Screening Level Input Voltage Nominal No Suffix, ES, HB, CH 28 = 28V Output Voltage 12 = 5V ±12V 15 = 5V ±15V (Please refer to Screening Table) Package Style F = Flange Blank = Non-Flanged Output T = Triple 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 7