PD-94551D ATR28XXT SERIES 28V Input, Triple Output 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. 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 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. www.irf.com 1 08/06/07 ATR28XXT Series Specifications TCASE = -55°C to +125°C, VIN = +28V ± 5% unless otherwise specified Absolute Maximum Ratings Input voltage Power Output Lead temperature -0.5V to +50VDC Internally limited, 37.5W typical 300°C -65°C to +135°C Storage temperature Test STATIC CHARACTERISTICS OUTPUT Voltage1 Current 1,2,3,4 Ripple 1,5 V RIP VR LINE 1,3 VR LOAD INPUT Current Ripple Current V OUT I OUT REGULATION Line 1,3 Load Symbol I IN 4 EFFICIENCY ISOLATION I RIP E FF ISO Load Fault Power Dissipation 3 PD Switching Frequency SYNC Frequency Range FS F SYNC Inhibit Open Circuit Voltage Output Response to Step transient Load changes 7 Recovery Time Step Step transient Load changes 7,8 V OI VO TLOAD TT LOAD Conditions -55°C ≤ TC ≤ +125°C, V IN = 28 V DC ±5%, C L =0, unless otherwise specified 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 = 16, 28, and 40 VDC BW = 20Hz to 2 MHz (dual) ATR2812T Min Max Min Max Units 4.95 4.90 ±11.88 ±11.76 100 5.05 5.10 ±12.12 ±12.24 4000 4.95 4.90 ±14.85 ±14.70 100 5.05 5.10 ±15.15 ±15.30 4000 V DC V DC V DC V DC mA 0.0 ±625 0.0 ±500 mA 60 60 mVp-p 40 40 mVp-p 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 = 3000mA (main) P OUT = 15W (dual) BW = 20Hz to 2MHz IOUT = 3000mA (main) +25°C P OUT = 15W (dual) over temp. range Input to output or any pin to case (except pin 8)at 500 TC=+25°C Overload 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 ATR2815T ±25 ±25 ±60 ±75 ±50 ±50 ±60 ±75 mV 15 75 15 75 mA mA 50 50 mAp-p 75 75 72 72 100 100 500 500 14 9.0 600 700 9.0 -500 -1000 % MΩ 500 500 14 9.0 600 700 W KHz KHz 13 9.0 13 V +500 +1000 200 5.0 10 -500 -1000 +500 +1000 200 5.0 10 mVpk 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 -0.5V to +50VDC Internally limited, 37.5W typical 300°C for 10 seconds Operating case temperature Storage case temperature 6 Test Output Response to Transient step9 Line changes10 Symbol VOTLINE Recovery Time8 Transient step9 Line changes10 Turn on Overshoot1 TTLINE Turn on Delay 1, 11 TonD Load Fault Recovery10 Device weight TRLF VTonOS Conditions -55°C ≤ TC ≤ +125°C, VIN = 28 VDC ±5%, CL=0, unless otherwise specified 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) -55°C to +135°C -65°C to +135°C ATR2812T Min Max ATR2815T Min Max Units ±1500 ±1500 mV pk 10 10 ms 1000 1000 mV pk 25 25 65 25 25 65 ms ms g Notes to Specifications 1. 2. 3. 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 2.0µs 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 2.0µs to 10µs. 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. www.irf.com 3 ATR28XXT Series Block Diagram 5 +Vout +Input 1 Enable Input 8 Case 7 Sync Input 9 EMI Filter Tracking Regulator 4 -Vout Primary Housekeeping Supply 2 3 Output Return Drive Error Amp & Ref Pulse Width FB Modulator CS +5Vdc Output Input Return 10 Standard Microcircuit Drawing Equivalence Table Standard Microcircuit Drawing Number 5962-92159 5962-93158 4 Vendor Cage Code 52467 52467 IR Standard Part Number ATR2815T ATR2812T www.irf.com ATR28XXT Series Mechanical Outlines 1.000 0.05 10 8 3 7 2 4 6 1 9 0.040 D X 0.26 L Pins 5 4 X 0.400 =1.600 1.95 2.700 Max 2.360 0.410 Max 1.350 Max Pin Designation www.irf.com Pin # Designation 1 + Input 2 +5Vdc Output 3 Output Return 4 - Dual Output 5 + Dual Output 6 NC 7 Case Ground 8 Enable Input 9 Sync Input 10 Input Return 5 ATR28XXT Series Device Screening Requirement MIL-STD-883 Method Temperature Range Element Evaluation No Suffix ES d -20°C to +85°C -55°C to +125°C HB e -55°C to +125°C CH -55°C to +125°C MIL-PRF-38534 N/A N/A N/A Class H 2023 N/A N/A N/A N/A 2017 c Yes Yes Yes Non-Destructive Bond Pull Internal Visual 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 d 160 hrs@125°C 160 hrs@125°C -55°C, +25°C, -55°C, +25°C, ( Group A ) & Specification +125°C +125°C PDA MIL-PRF-38534 N/A N/A N/A 10% Seal, Fine and Gross 1014 Cond A Cond A, C Cond A, C Cond A, C Radiographic 2012 N/A N/A N/A N/A External Visual 2009 Yes Yes Yes c Notes: Best commercial practice Sample tests at low and high temperatures -55°C to +105°C for AHE, ATO, ATW Part Numbering ATR 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. 08/2007 6 www.irf.com