PD - 94582 ATO28XXT SERIES 28V Input, Triple Output ADVANCED ANALOG HYBRID-HIGH RELIABILITY DC/DC CONVERTERS 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. 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 environments. 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-PRF-38534 for class H. The HB grade converters are processed to full class H screening requirements but do not have class H element evaluation as directed by MIL-PRF-39534. 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 modest design modifications to be accommodated. Contact Advanced Analog with specific requirements. www.irf.com ATO 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 Characteristics n Operating Temperature Range from -55°C to +125°C 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 85°C 1 11/20/02 ATO28XXT Series Specifications TCASE = -55°C to +85°C, VIN = +28V ± 5% unless otherwise specified ABSOLUTE MAXIMUM RATINGS Input Voltage -0.5V to 50V Power Output Internally limited, 17.5W typical Soldering 300°C for 10 seconds Operating -55°C to +115°C case Temperature Range6 Storage -65°C to +135°C SYMBOL TEST STATIC CHARACTERISTICS OUTPUT Voltage 1 VOUT Condition -55°C ≤ TC ≤ +85°C, VIN = 28 VDC ±5%, CL=0 unless otherwise specified IOUT = 0 (main) TC = 25°C IOUT = 0 (dual)1 TC = 25°C Over Temp Over Temp Current 1,2,3 IOUT Ripple Voltage 1,4 VRIP Power 1,2,3 POUT REGULATION Line 1,3 VRLINE Load 1,3 VRLOAD INPUT Current Ripple Current IIN 4 IRIP EFFICIENCY EFF ISOLATION ISO Load Fault Power Dissipation 3 Switching Frequency PD Inhibit Open Circuit Voltage VOI FS VIN = 16, 28, and 40 VDC (main) VIN = 16, 28, and 40 VDC (dual)1 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) 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 10 2.5 2.5 15 TC = 25°C Over Temp 10 2.5 2.5 15 25 25 mV ±30 ±60 50 ±35 ±75 50 mV mV mV ±60 ±75 mV 15 15 mA 40 50 40 50 mA mAp-p TC = 25°C 76 76 TC = 25°C 100 100 225 8 6 275 9 13 TC = 25°C W W W W % MΩ 225 8 6 275 W W KHz 9 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 volt) main output. Bandwidth guaranteed by design. Tested for 20KHz to 2MHz. 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 ABSOLUTE MAXIMUM RATINGS Input Voltage -0.5V to 50V Power Output Internally limited, 17.5W typical Soldering 300°C for 10 seconds Operating -55°C to +125°C case Temperature Range6 Storage -65°C to +135°C TEST SYMBOL STATIC CHARACTERISTICS OUTPUT Voltage 1 VOUT Condition -55°C ≤ TC ≤ +105°C, VIN = 28 VDC ±5%, CL=0 unless otherwise specified IOUT = 0 (main) 1 IOUT = 0 (dual) Current 1,2,3 Ripple Voltage Power IOUT 1,4 1,2,3 REGULATION Line 1,3 Load 1,3 INPUT Current VRIP POUT VRLINE VRLOAD IIN Ripple Current 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) 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, TC = +25°C PD Overload, TC = +25°C5 Short Circuit, TC = +25°C FS IOUT = 2000mA (main) IOUT = ±167mA (dual) 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 mVp-p 10 2.5 2.5 15 W W W W 25 25 mV ±30 ±60 50 ±35 ±75 50 mV mV mV ±60 ±75 mV 15 15 mA 40 50 40 50 mA mAp-p TC = 25°C 76 76 % TC = 25°C 100 100 MΩ 8 6 TC = 25°C 8 6 W W Switching Frequency Inhibit Open Circuit Voltage VOI 225 275 225 275 KHz 9 13 9 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 volt) main output. Bandwidth guaranteed by design. Tested for 20KHz to 2MHz. 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 ABSOLUTE MAXIMUM RATINGS Input Voltage -0.5V to 50V Power Output Internally limited, 17.5W typical Soldering 300°C for 10 seconds Operating -55°C to +135°C case Temperature Range6 Storage -65°C to +135°C TEST SYMBOL STATIC CHARACTERISTICS OUTPUT Voltage 1 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 1,2,3 REGULATION Line 1,3 Load 1,3 VRIP POUT VRLINE VRLOAD INPUT Current IIN Ripple Current 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) 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, TC = +25°C PD Overload, TC = +25°C5 Short Circuit, TC = +25°C FS IOUT = 2000mA (main) IOUT = ±167mA (dual) 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 mV ±30 ±60 50 ±35 ±75 50 mV mV mV ±60 ±75 mV 15 15 mA 40 50 40 50 mA mAp-p TC = 25°C 76 76 % TC = 25°C 100 100 MΩ 8 6 TC = 25°C 8 6 W W Switching Frequency Inhibit Open Circuit Voltage VOI 225 275 225 275 KHz 9 13 9 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 volt) main output. Bandwidth guaranteed by design. Tested for 20KHz to 2MHz. 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 ATO28XXT Block Diagram 5 + V out R e g u la to r 4 -V out 1 + Input 8 E nable EM I F ilter 2 + 5V out 3 R eturn D riv e 1 P ulse W idth D riv e 2 M odulator FB E rro r A m p & R e fe ren ce Input R eturn 10 www.irf.com 5 ATO28XXT Series ATO28XXT Case Outline Flanged Non-Flanged 1.000 0.05 7 10 8 3 4 6 2 5 1.350 M ax 4 X 0.400 =1.600 1 1.950 M ax 9 0.040 D X 0.26 L Pins 1.95 2.700 M ax 2.360 0.500 M ax 0.500 M ax 1.350 M ax Pin Designation Part Numbering A TO 28 15 T / C H Pin No. 1 Designation + Input M odel In p u t V o lta ge S cre e n in g L e ve l — , ES, H B, C H 28 = 28V 2 6 + 5V Output DC Input 3 Output Return 4 -Dual Output 5 + Dual Output 6 N/C 7 Case Ground 8 Enable Input 9 N/C 10 Input Return O u tp u t V o lta ge s 15 = 5V, ± 15V 12 = 5V, ± 12V O u tp u ts T = T riple www.irf.com ATO28XXT Series Available Screening Levels and Process Variations for ATO28XXT Series MIL-STD-883 Method Requirement Temperature Range No Suffix ES Suffix HB Suffix CH Suffix -55°C to +85°C -55°C to +125°C -55°C to +125°C -55°C to +125°C Element Evaluation MIL-PRF-38534 Internal Visual 2017 ¬ Yes Yes Yes Temperature Cycle 1010, Cond C Cond A Yes Yes Constant Acceleration 2001, Cond A 500g 5,000g 5,000g Burn-in Final Electrical (Group A) 1015 48 hrs @ 85ºC 48hrs @ 105°C 160hrs @ 125°C 160hrs @ 125°C MIL-PRF-38534 & Specification 25°C 25°C -55, +25, +125°C -55, +25, +125°C Yes Yes Yes Yes Yes Yes Seal, Fine & Gross 1014 External Visual 2009 ¬ * Per Commercial Standards Available Standard Military Drawing (SMD) Cross Reference Standardized Military Drawing Pin 5962-9095401HXX 5962-9095401HZX 5962-9160201HXX 5962-9160201HZX Vendor CAGE Code 52467 52467 52467 52467 Vendor Similar Pin ATO2815T/CH ATO2815TF/CH ATO2812T/CH ATO2812TF/CH WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, Tel: (310) 322 3331 ADVANCED ANALOG: 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. 11/02 www.irf.com 7