PD-97440D GH-SERIES 28V Input, Single Output HIGH RELIABILITY, HIGH EFFICIENCY RADIATION HARDENED DC-DC CONVERTER Description The GH-Series is a family of low voltage single output DC-DC converters. They are specifically designed in response to the need for low voltage at moderate current levels with the high efficiency and tight regulation dictated by modern digital processing applications. The converters are radiation hardened, high reliability converters designed for extended operation in hostile environments. Their small size and low weight make them ideal for applications such as geostationary earth orbit satellites and deep space probes. They exhibit a high tolerance to total ionizing dose, single event effects and environmental stresses such as temperature extremes, mechanical shock, and vibration. All components are fully de-rated to meet the requirements of MIL-STD-975, MIL-STD-1547 except for the CDR type of capacitors, a capacitor with 50V rating is used for in-circuit voltage stress of less than10V. Thorough analyses and documentation including beginning-of-life (BOL) and end-of-life (EOL) electrical worst case (WCA) operation, component stress and de-rating, radiation susceptibility (TREE), thermal stress, failure mode and effects (FMEA), and reliability (MTBF) are available for customer review. The design incorporates a fixed frequency topology with magnetic feedback. Synchronous rectification is deployed to maximize efficiency performance. The converters include an internal EMI filter that is capable of meeting the conducted emission requirements of most major satellite power busses. Incorporation of many functional features including on/off command, remote sensing, and under-voltage lockout make the design suitable for today’s space design applications. GH Features Total Ionization Dose (TID) > 100 kRad(Si) SEE Hardened to LET Level > 82 MeVcm2/mg Internal EMI filter Low Weight, < 110 grams Magnetically Coupled Feedback 18V to 40V DC Input Range Up to 50W Output Power Single Output Models Include 1V, 1.5V, 1.8V, 2.5V, 3.3V and 5V High Efficiency - to 87% -55°C to +85°C Operating Temperature Range 100M @ 100VDC Isolation Under-Voltage Lockout Short Circuit and Overload Protection Output Voltage Adjust Synchronization Output and Input Remote Sense External Inhibit Applications Geostationary Earth Orbit Satellites (GEO) Deep Space Satellites / Probes Strategic Weapons and Communication System The converter is enclosed in a hermetically sealed package with the overall dimensions of 3.5"L x 2.50”W x 0.475"H including the I/O pins and mounting tabs. The package base material is silicon carbide-aluminum (AISIC). The package ring frame is Alloy 48. The package utilizes rugged ceramic feed-through copper core I/O pins and is sealed using parallel seam welding. The total mass of a converter is less than 110 grams. Manufactured in a facility fully qualified to MIL-PRF-38534, these converters are fabricated utilizing DLA Land and Maritime qualified processes. For available screening options, refer to device screening table in the data sheet. 1 Non-flight versions of the GH-Series converters are available for system development purposes. Variations in electrical specifications and screening to meet custom requirements can be accommodated. 2016-05-16 GH-SERIES (28V Input, Single Output) Specifications Absolute Maximum Ratings Input voltage range Output power Lead temperature Operating case temperature Storage temperature -0.5VDC to +60VDC Internally limited +300°C for 10 seconds -55°C to +125°C (Note 13) -55°C to +135°C Recommended Operating Conditions Input voltage range1 +18VDC to +40VDC Output power 0 to Max. Rated Operating case temperature -55°C to +85°C Operating case temperature1 -55°C to +70°C 1. Meets derating per MIL-STD-975 Electrical Performance Characteristics Parameter Input Voltage Output Voltage (VOUT) GH2801S GH2801R5S GH2801R8S GH2802R5S GH2803R3S GH2805S GH2801S GH2801R5S GH2801R8S GH2802R5S GH2803R3S GH2805S Output power (POUT) GH2801S GH2801R5S GH2801R8S GH2802R5S GH2803R3S GH2805S Output current (IOUT) GH2801S GH2801R5S GH2801R8S GH2802R5S GH2803R3S GH2805S Group A Subgroup 1 1 1 1 1 1 Conditions -55°C TC +85°C VIN = 28V DC ± 5%, CL = 0 unless otherwise specified IOUT = 100% rated load 2,3 2,3 2,3 2,3 2,3 2,3 1,2,3 1,2,3 Line regulation (VRLINE) 1,2,3 Load regulation (VRLOAD) 1,2,3 Input current (IIN) 1,2,3 Switching frequency (FS) 1,2,3 VIN = 18, 28, 40 Volts, Note 2 VIN = 18, 28, 40 Volts, Note 2 VIN = 18, 28, 40 Volts IOUT = 0, 50%, 100% rated IOUT = 0, 50%, 100% rated VIN = 18, 28, 40 Volts IOUT = 0, Pin 3 open Pin 3 shorted to pin 2 Sync. Input (Pin 4) open Limits Unit Min Nom Max 18 Note 3 0.98 1.48 1.77 2.47 3.28 4.98 28 40 Note 3 1.02 1.52 1.83 2.53 3.32 5.02 1.00 1.50 1.80 2.50 3.30 5.00 V V 0.96 1.45 1.75 2.45 3.24 4.93 1.04 1.55 1.85 2.55 3.36 5.07 0 0 0 0 0 0 20 30 36 50 50 50 0 0 0 0 0 0 20 20 20 20 15.15 10 -10 10 mV -0.5 0.5 % 130 2.0 200 5.0 mA 500 550 kHz 450 W A For Notes to Electrical Performance Characteristics, refer to page 4. 2 2016-05-16 GH-SERIES (28V Input, Single Output) Electrical Performance Characteristics (continued) Parameter Group A Subgroup Synchronization Input frequency range pulse high level pulse low level pulse transition time pulse duty cycle Output ripple (VRIP) GH2801S GH2801R5S GH2801R8S GH2802R5S GH2803R3S GH2805S Efficiency (EFF) GH2801S GH2801R5S GH2801R8S GH2802R5S GH2803R3S GH2805S Inhibit Input open circuit voltage drive current (sink) voltage range Current Limit Point Expressed as a percentage of full rated load current Power dissipation, load fault (PD) Output response to step load changes (VTLD) GH2801S GH2801R5S GH2801R8S GH2802R5S GH2803R3S GH2805S Recovery time, step load changes (TTLD) GH2801S GH2801R5S GH2801R8S GH2802R5S GH2803R3S GH2805S Output response to step line changes (VTLN) Conditions -55°C TC +85°C VIN = 28V DC ± 5%, CL = 0 unless otherwise specified Ext. Clock on Sync. Input (Pin 4) Note 1 1,2,3 1 Limits Min 450 4.0 -0.5 80 20 70 72 75 81 83 85 80 15 15 15 25 25 30 73 75 78 84 85 87 3.0 1,2,3 Max 600 10.0 0.5 5 5 5 10 10 10 IOUT = 100% rated load Note 4 IOUT = 100% rated load Nom Note 1 -0.5 Unit kHz V V V/s % mVp-p % 5.0 100 50 V A V 1,2,3 VOUT = 90% of Nominal 125 135 % 1,2,3 Short Circuit, Overload, Note 6 17 25 W Half Load to/from Full Load, Note 7 4,5,6 4,5,6 Half Load to/from Full Load, Notes 7, 8 4,5,6 24V to/from 32V IOUT = 100% rated load, Notes 1, 9 -300 -300 -300 -300 -300 -300 300 300 300 300 300 300 250 250 250 250 250 250 -50 50 mVpk s mVpk For Notes to Electrical Performance Characteristics, refer to page 4. 3 2016-05-16 GH-SERIES (28V Input, Single Output) Electrical Performance Characteristics (continued) Parameter Recovery time, step line changes (TTLN) Turn-on Response Overshoot (VOSH) Turn-on Delay (TDLY) Capacitive Load (CL) Group A Subgroup 4,5,6 Conditions -55°C TC +85°C VIN = 28V DC ± 5%, CL = 0 unless otherwise specified 24V to/from 32V IOUT = 100% rated load, Notes 1, 8, 9 No Load, Full Load Note 10 4,5,6 IOUT = 100% rated load No effect on DC performance Notes 1, 5 IOUT = 100% rated load DC to 50kHz, Note 1 1 Line Rejection 1 Electromagnetic Interference (EMI), conducted emission (CE) 1 IOUT = 100% rated load, Note 1 Isolation 1 Input to Output or Any Pin to Case except pin 13, test @ 100VDC Limits Min Nom 0 40 s 250 5.0 mV ms 5000 F dB Per Fig. 3 100 M 110 MIL-HDBK-217F2, SF, 35°C, Note 11 Unit 200 60 Device Mass MTBF Max 5.8x106 g Hrs Notes for Electrical Performance Characteristics Table 1. Parameter is tested as part of design characterization or after design changes. Thereafter, parameter shall be guaranteed to the limits specified. 2. Parameter verified during line and load regulation tests. 3. These are beginning-of-life (BOL) limits. End-of-life (EOL) limits are -3% and +3% of nominal limit for Min and Max, respectively. 4. Guaranteed for a D.C. to 20MHz bandwidth. Tested using a 20kHz to 10MHz bandwidth. 5. 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 may interfere with the proper operation of the converter’s overload protection, causing erratic behavior during turn-on. 6. Overload power dissipation is defined as the device power dissipation with the load set such that VOUT = 90% of nominal. 7. Load step slew rate 0.5A/s. 8. Recovery time is measured from the initiation of the transient to where VOUT has returned to within ±1% of its steady state value. 9. Line step slew rate 1.0V/s. 10. Turn-on delay time from either a step application of input power or a logic low to a logic high transition on the inhibit pin (pin 3) to the point where VOUT = 90% of nominal. 11. MIL-HDBK MOSFET failure rates replaced by empirical failure rate data supplied by IR HiRel. Radiation Performance Characteristics Test Inspection Method Min Typ Unit Total Ionizing Dose (Gamma) MIL-PRF-883, Method 1019.5 Operating bias applied during exposure, Half Rated Load, VIN = 28V 100 kRads(Si) Single Event Effects SEU, SEL, SEGR, SEB Heavy Ions (LET) Operating bias applied during exposure, Half Rated Load, VIN = 18V, 28V & 50V Test lab: Cyclotron Institute Texas A & M University 82 MeVcm2/mg IR HiRel currently does not have a DLA Land and Maritime certified Radiation Hardness Assurance Program. 4 2016-05-16 GH-SERIES (28V Input, Single Output) Fig. 1 –Typical Efficiency vs Output Current @ 25°C, 5V Output (GH2805S) 90 Efficiency vs. Output Current at 25ºC, 5V Output (GH2805S) 85 Efficiency, % 80 75 70 65 18V Vin 28V Vin 40V Vin 60 55 50 45 40 0 2 4 6 8 10 Output Current, A Fig. 2 –Typical Efficiency vs Temperature, 5V Output (GH2805S) Efficiency vs. Temperature, 5V Output (GH2805S) 90 85 Efficiency, % 80 75 -55ºC 25ºC 85ºC 70 65 60 55 50 0 2 4 6 8 10 Output Current, A 5 2016-05-16 GH-SERIES (28V Input, Single Output) Fig. 3 – EMI CE03 Specification Limits and Typical Performance Fig. 4 - Block Diagram - Single Output 7/8 PEAK CURRENT DETECTION EMI FILTER Input 1 Output 9/10 Inhibit 3 UVLO & INHIBIT Output Return BIAS +12V SUPPLY Case 13 Input 2 Return +9V Sec. Bias SENSE AMPLIFIER ERROR AMPLIFIER Ref Sync 4 Input Sync 5 Output 6 OSCILLATOR REF & S.S. Aout PWM Bout CONTROLLER Vfb Clk S.S. 6 +Sense 11 -Sense 12 Output Adjust SAMPLE & HOLD FEEDBACK TRIGGER 2016-05-16 GH-SERIES (28V Input, Single Output) Application Note: The GH-Series converters have an Output Adjust pin (pin 12), which when connected via an external resistor (RADJ) to either the –sense (pin 11) or +sense (pin 6), allows the nominal output voltage to be adjusted. Use the following equations with the parameters listed in Table 1 to calculate the required resistor value (RADJ). For all Models, to adjust the output voltage higher: 2 A -B V OUT - V NOM R ADJ = where: RADJ is in Kohms RADJ is connected to -sense and VNOM < VOUT < 1.1VNOM VNOM is the nominal output voltage with the Adjust Pin left open VOUT is the desired output voltage A and B are parameters defined in Table 1 For all Models, to adjust the output voltage lower: R ADJ = 1 A 0.5 C (V OUT A) -B where: RADJ is in Kohms RADJ is connected to +sense and D < VOUT < VNOM VNOM is the nominal output voltage with the Adjust Pin left open VOUT is the desired output voltage A, B, C and D are parameters defined in Table 1 Table 1. Equation Parameters by Model MODEL 7 EQUATION PARAMETERS A B C D GH2801S 0.714 14.3 5.0 0.965 GH2801R5S 0.937 12.6 3.33 1.425 GH2801R8S 1.047 11.5 2.78 1.689 GH2802R5S 1.25 10 2.0 2.292 GH2803R3S 1.425 8.34 1.52 2.937 GH2805S 1.667 6.68 1.0 4.233 2016-05-16 GH-SERIES (28V Input, Single Output) Mechanical Outline 3.055 MAX. 0.500 0.080 Max. 2.00 R0.0625 4 places 0.30 0.50 0.20 13 1 12 2 11 10 0.60 9 3 8 4 7 5 6 2.055 MAX. 2.30 0.200 Typ. Noncum. 1.400 Ref. 2.500 Pin Ø0.040 0.45 1.10 0.260 FLANGE DETAIL 3.50 Ref. . R0 0.25 0.25 2 06 5 0.14 0.475 MAX. 0.40 Tolerance : .XX .XXX ±0.01 ±0.005 Pin Designation Pin # Designation Pin # Designation 1 Input 8 Output 2 3 4 5 6 Input Return Inhibit Sync Input Sync Output + Sense 9 10 11 12 13 Output Return Output Return - Sense Output Adjust Case 7 Output Standard Microcircuit Drawing Equivalence Table 8 Standard Microcircuit Drawing Number IR Standard Part Number 5962-1021701KXX GH2803R3S/CKX 5962-1021901KXX GH2805S/CKX 2016-05-16 GH-SERIES (28V Input, Single Output) Device Screening Requirement MIL-STD-883 Method No Suffix CK EM Temperature Range — -55°C to +85°C -55°C to +85°C -55°C to +85°C Element Evaluation MIL-PRF-38534 Class K Class K N/A Non-Destructive Bond Pull 2023 Yes Yes N/A Internal Visual 2017 Yes Yes Temperature Cycle 1010 Cond C Cond C Cond C Constant Acceleration 2001, Y1 Axis 3000 Gs 3000 Gs 3000 Gs PIND 2020 Cond A Cond A N/A Burn-In 1015 Final Electrical (Group A) PDA MIL-PRF-38534 & Specification MIL-PRF-38534 320 hrs @ 125°C (2 x 160 hrs) -55°C, +25°C, +85°C 2% 320 hrs @ 125°C (2 x 160 hrs) -55°C, +25°C, +85°C 2% Seal, Fine and Gross 1014 Cond A, C Cond A, C Cond A Radiographic 2012 Yes Yes External Visual 2009 Yes Yes N/A 48 hrs @ 125°C -55°C, +25°C, +85°C N/A Notes: Best commercial practice. CK is a DLA Land and Maritime (formerly DSCC) part marking used to designate a Class K compliant hybrid. The CK marking does not indicate the hybrid is radiation certified. No suffix is a radiation rated device but not available as a DLA qualified SMD per MIL-PRF-38534. Any Engineering Model (EM) build with the “EM” Suffix shall only be form, fit and functional equivalent to its Flight Model (FM) counterpart, and it may not meet the radiation performance. The EM Model shall not be expected comply with MIL- PRF-38534 flight quality/workmanship standards, and configuration control. An EM build may use electrical equivalent commercial grade components. IR HiRel will provide a list of non-compliance items upon request. Part Numbering IR HiRel Headquarters: 101 N. Sepulveda Blvd., El Segundo, California 90245, USA Tel: (310) 252-7105 IR HiRel Leominster: 205 Crawford St., Leominster, Massachusetts 01453, USA Tel: (978) 534-5776 IR HiRel San Jose: 2520 Junction Avenue, San Jose, California 95134, USA Tel: (408) 434-5000 Data and specifications subject to change without notice. 9 2016-05-16 GH-SERIES (28V Input, Single Output) IMPORTANT NOTICE The information given in this document shall be in no event regarded as guarantee of conditions or characteristic. The data contained herein is a characterization of the component based on internal standards and is intended to demonstrate and provide guidance for typical part performance. It will require further evaluation, qualification and analysis to determine suitability in the application environment to confirm compliance to your system requirements. With respect to any example hints or any typical values stated herein and/or any information regarding the application of the product, Infineon Technologies hereby disclaims any and all warranties and liabilities of any kind including without limitation warranties on non- infringement of intellectual property rights and any third party. In addition, any information given in this document is subject to customer’s compliance with its obligations stated in this document and any applicable legal requirements, norms and standards concerning customer’s product and any use of the product of Infineon Technologies in customer’s applications. The data contained in this document is exclusively intended for technically trained staff. It is the responsibility of any customer’s technical departments to evaluate the suitability of the product for the intended applications and the completeness of the product information given in this document with respect to applications. For further information on the product, technology, delivery terms and conditions and prices, please contact your local sales representative or go to (www.infineon.com/hirel). WARNING Due to technical requirements products may contain dangerous substances. For information on the types in question, please contact your nearest Infineon Technologies office. 10 2016-05-16