PD-94437E M3H-SERIES +28V Input, Single/Dual Output HYBRID-HIGH RELIABILITY RADIATION HARDENED DC-DC CONVERTER Description The M3H-Series of DC-DC converters are radiation tolerant, high reliability devices designed for moderate radiation environments such as those encountered by low earth orbit satellites and launch vehicles. For higher radiation environments, the M3G-Series of DC-DC converters is recommended. System upgrades to higher radiation tolerance applications can be easily accommodated with the M3G-Series converters because they have the same mechanical outline and are pin compatible. For physically smaller, lower output power single and dual output applications the M3L-Series of DC-DC converters are recommended. Features of the M3H-Series include up to 40 watt output power, small size, low weight and 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 and MIL-STD-1547. Extensive documentation including Radiation Susceptibility, Thermal Analysis, Stress Analysis and MTBF are available. The converters incorporate a fixed frequency single forward topology with magnetic feedback and an internal EMI filter. These converters are capable of meeting the conducted emissions and conducted susceptibility requirements of MIL -STD-461C without any additional components. All models include an external inhibit port and have an adjustable output voltage. They are enclosed in a hermetic 3.0" x 2.5" x 0.445" steel package and weigh less than 125 grams. The package utilizes rugged ceramic feed-through copper core pins and is sealed using parallel seam welding. M3H Features Total Dose > 25 kRads(Si) SEE Hardened to LET up to 37 MeV.cm2/mg Internal EMI filter; Converter Capable of meeting MIL-STD-461C CE03 and CS01 Low Weight < 125 grams Magnetically Coupled Feedback 18V to 50V Input Range (50V, 70V, and 120V Models Available) Up to 40W Output Power Single and Dual Output Models Include 3.3, 5, 5.2, 12, 15, ±5, ±12, ±15V High Efficiency - to 82% -55°C to +125°C Operating Temperature Range 100M @ 500VDC Isolation Under-Voltage Lockout Short Circuit and Overload Protection Adjustable Output Voltage External Inhibit 1,500,000 Hour MTBF Applications Low Earth Orbit Satellites (LEO) Launch Vehicles 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. Non-flight versions of the M3H-Series converters are available for system development purposes. Variations in electrical specifications and screening to meet custom requirements can be accommodated. Consult IR HiRel San Jose for special requirements. 1 2016-05-19 M3H-SERIES (+28V Input, Single/Dual Output) Circuit Description The M3H-Series converters utilize a single forward topology with resonant reset. The nominal switching frequency is 500kHz. Electrical isolation and tight output regulation are achieved through the use of a magnetically coupled feedback. Voltage feed-forward provides high line rejection. An internal EMI filter allows the converter to meet the conducted emissions requirements of MIL-STD-461C on the input power leads. A two-stage output filter reduces the typical output ripple to less than 20mV peak-to-peak. Output current is limited under any load fault condition to approximately 125% of rated. An overload condition causes the converter output to behave like a constant current source with the output voltage dropping below nominal. The converter will resume normal operation when the load current is reduced below the current limit point. This protects the converter from both overload and short circuit conditions. The current limit point exhibits a slightly negative temperature coefficient to reduce the possibility of thermal runaway. An under-voltage lockout circuit prohibits the converter from operating when the line voltage is too low to maintain the output voltage. The converter will not start until the line voltage rises to approximately 17 volts and will shut down when the input voltage drops below 16 volts. The one volt of hysteresis reduces the possibility of line noise interfering with the converter’s start-up and shut down. 2 An external inhibit port is provided to control converter operation. The converter’s operation is inhibited when this pin is pulled low. It is intended to be driven by an open collector logic device. The pin may be left open for normal operation and has a nominal open circuit voltage of 10.5V with respect to the input return (pin 2). Single output models feature remote sense to automatically correct for voltage drops between the converter output anf the load. The output voltage of dual output models can be adjusted using a single external resistor. Design Methodology The M3H-Series was developed using a proven conservative design methodology which includes selecting radiation tolerant and established reliability components and fully de-rating to the requirements of MIL-STD-975 and MIL-STD-1547. Heavy de-rating of the power MOSFET gate and drain voltages minimize the possibility of SEGR and SEB. A magnetic feedback circuit is utilized instead of opto-couplers to minimize temperature, radiation and aging sensitivity. PSPICE was used extensively to predict and optimize circuit performance for both beginning and end-of-life. Thorough design analyses include Radiation Susceptibility (TREE), Stress, Thermal, and Reliability (MTBF). 2016-05-19 M3H-SERIES (+28V Input, Single/Dual Output) Specifications Absolute Maximum Ratings Input Voltage range Output power Lead Temperature Recommended Operating Conditions -0.5VDC to +60VDC Input Voltage range +18VDC to +60VDC 1 Internally limited +18VDC to +38VDC Input Voltage range +300°C for 10 seconds Output power 0 to Max. Rated 2 Operating temperature -55°C to +135°C Operating temperature -55°C to +125°C Storage temperature -55°C to +135°C Operating temperature1 -55°C to +70°C 1 2 Meets de-rating per MIL-STD-975 For operation at +125°C see table Note 13 Electrical Performance Characteristics Parameter Group A Subgroup Conditions -55°C TC +85°C VIN = 28V DC ± 5%, CL = 0 unless otherwise specified Input Voltage Output Voltage (VOUT) M3H2803R3S M3H2805S M3H2805R2S M3H2812S M3H2815S M3H2805D M3H2812D M3H2815D 1 1 1 1 1 1 1 1 2,3 2,3 2,3 2,3 2,3 2,3 2,3 2,3 M3H2803R3S M3H2805S M3H2805R2S M3H2812S M3H2815S M3H2805D M3H2812D M3H2815D Output power (POUT) M3H2803R3S All Others Output current (IOUT) M3H2803R3S M3H2805S M3H2805R2S M3H2812S M3H2815S M3H2805D M3H2812D M3H2815D 1,2,3 Line regulation (VRLINE) 1,2,3 Load regulation (VRLOAD) 1,2,3 IOUT = 100% rated load Note 4 Limits Min Nom Max 18 28 40 3.27 4.95 5.17 11.88 14.85 ±4.95 ±11.88 ±14.85 3.30 5.00 5.20 12.00 15.00 ±5.00 ±12.00 ±15.00 3.33 5.05 5.23 12.12 15.15 ±5.05 ±12.12 ±15.15 Unit V V 3.23 4.90 5.13 11.76 14.70 ±4.90 ±11.76 ±14.70 3.37 5.10 5.27 12.24 15.30 ±5.10 ±12.24 ±15.30 0 0 30 40 0 0 0 0 0 0 0 0 9.10 8.00 7.70 3.34 2.67 6.40 2.67 2.14 VIN = 18, 28, 40 Volts IOUT = 0, 50%, 100% rated, Note 4 -0.5 0.5 % IOUT = 0, 50%, 100% rated, Note 4 VIN = 18, 28, 40 Volts -1.0 1.0 % IOUT = 100% rated load Note 4 VIN = 18, 28, 40 Volts, Note 2 VIN = 18, 28, 40 Volts, Note 2 1,2,3 Either Output, Note 3 Either Output, Note 3 Either Output, Note 3 W A For Notes to Electrical Performance Characteristics, refer to page 5 3 2016-05-19 M3H-SERIES (+28V Input, Single/Dual Output) Electrical Performance Characteristics (continued) Parameter Cross regulation (VRCROSS) M3H2805D M3H2812D M3H2815D Output Ripple (VRIP) M3H2803R3S M3H2805S M3H2805R2S M3H2812S M3H2815S M3H2805D M3H2812D M3H2815D Input current, no load (IIN) M3H2803R3S M3H2805S M3H2805R2S M3H2812S M3H2815S M3H2805D M3H2812D M3H2815D Group A Subgroup Conditions -55°C TC +85°C VIN = 28V DC ± 5%, CL = 0 unless otherwise specified 1,2,3 Duals only, Note 5 VIN = 18, 28, 40 Volts 1,2,3 IOUT = 0, Pin 4 open Input current inhibited 1,2,3 Pin 4 shorted to pin 2 Switching frequency (FS) 1,2,3 Output response to step load changes (VTLD) Min Nom -5.0 -3.0 -3.0 1,2,3 IOUT = 100% rated load Note 4 1,2,3 Note 1 1,2,3 VOUT = 90% of Nominal, Note 4 1,2,3 Short Circuit, Overload, Note 8 4,5,6 Half Load to/from Full Load, Notes 4, 9 Max Unit 5.0 3.0 3.0 % 35 50 50 70 80 80 80 80 VIN = 18, 28, 40 Volts IOUT = 100% rated load Notes 4, 6 1,2,3 Efficiency (EFF) M3H2803R3S M3H2805S M3H2805R2S M3H2812S M3H2815S M3H2805D M3H2812D M3H2815D Enable Input (Inhibit Function) 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) M3H2815D All others Limits 450 500 68 76 77 78 78 77 78 78 73 80 80 81 82 80 81 82 mVp-p 60 70 70 70 70 70 100 100 8.0 mA 550 kHz mA % -0.5 11.5 500 50 V A V 105 130 % 22 18 W 300 mVpk 9.5 -300 For Notes to Electrical Performance Characteristics, refer to page 5 4 2016-05-19 M3H-SERIES (+28V Input, Single/Dual Output) Electrical Performance Characteristics (continued) Group A Subgroup Conditions -55°C TC +85°C VIN = 28V DC ± 5%, CL = 0 unless otherwise specified Recovery time, step load changes (TTLD) 4,5,6 Half Load to/from Full Load, Notes 4,9,10 Output response to step line changes (VTLN) 4,5,6 18V to/from 40V IOUT = 100% rated load, Notes 1,4,11 Recovery time, step line changes (TTLN) 4,5,6 18V to/from 40V IOUT = 100% rated load, Notes 1,4,10,11 Turn-on Response Overshoot (VOS) Turn-on Delay (TDLY) 4,5,6 No Load, Full Load for Dual Notes 4,12 4,5,6 20 % Load, Full Load for Single Notes 4,12 Parameter Overshoot (VOS) Turn-on Delay (TDLY) Capacitive Load (CL) M3H2803R3S M3H2805S M3H2005R2S M3H2812S M3H2815S M3H2805D M3H2812D M3H2815D 1 Limits Unit Min Nom -300 2.0 2.0 1 Isolation 1 IOUT = 100% rated load DC to 50kHz, Notes 1, 4 Input to Output or Any Pin to Case except pin 3, test @ 500VDC 40 s 300 mVpk 200 s 10 10 10 10 % ms % ms 50 M 125 MIL-HDBK-217F2, SF, 35°C 1.5 x 10 µF dB 100 Device Weight MTBF 200 2200 1000 1000 180 120 500 90 60 IOUT = 100% rated load No effect on DC performance Notes 1, 4, 7 Each output on duals Line Rejection Max 6 g Hr Notes: 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. Output load current must be distributed such that at least 20% of the total load current is being provided by one of the outputs. 4. Load current split equally between outputs on dual output models. 5. Cross regulation is measured with 20% rated load on output under test while changing the load on the other output from 20% to 80% of rated. 6. Guaranteed for a D.C. to 20 MHz bandwidth. Tested using a 20 kHz to 10 MHz bandwidth using the circuit shown below. 7. 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. 8. Overload power dissipation is defined as the device power dissipation with the load set such that VOUT = 90% of nominal. 9. Load step transition time 10 s. 10. Recovery time is measured from the initiation of the transient to where VOUT has returned to within ±1% of its steady state value 11. Line step transition time 100 s. 12. 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 4) to the point where VOUT = 90% of nominal. 13. For operation at temperatures between +85°C and +125°C, de-rate the maximum output power linearly from 100% to 75%. 5 2016-05-19 M3H-SERIES (+28V Input, Single/Dual Output) Circuit for Measuring Output Ripple Voltage 50 ohm Back Term. 1 uF 50 ohm Coax. 50 ohm Term. OUTPUT 0.1 uF Oscilloscope or Equivalent with 10 MHz Bandwidth. Multiply readings by 2. Note : Specification guaranteed to 20MHz Bandwidth. DUT RETURN Full Rated Load Radiation Performance Characteristics Test Highest Level Tested Conditions Min Typ Total Ionizing Dose (Gamma) MIL-STD-883, Method 1019 Operating bias applied during exposure, Full Rated Load, VIN = 28V 25 40 60 kRads(Si) Single Event Effects SEU, SEL, SEGR, SEB Heavy ions (LET) Operating bias applied during exposure, Full Rated Load, VIN = 28V 37 82 82 MeVcm2/mg Dose Rate (Gamma Dot) Temporary Saturation Survival MIL-STD-883, Method 1023 Operating bias applied during exposure, Full Rated Load, VIN = 28V 1E8 1E10 1.5E9 Rads (Si)/sec MIL-STD-883, Method 1017 3E12 8E12 Neutrons/cm2 E > 10MeV TBD N/A Protons/cm2 Neutron Fluence Proton Fluence Unit IR HiRel currently does not have does not have a DLA Land and Maritime certified Radiation Hardness Assurance Program. 6 2016-05-19 M3H-SERIES (+28V Input, Single/Dual Output) Figure 1. Block Diagram - Single Output Vin 1 EMI FILTER +10.5V UVLO & INHIBIT INHIBIT 3 BIAS SUPPLY 13 +OUTPUT 12 RETURN 10 +SENSE 9 -SENSE 6 CASE GROUND RETURN 2 + + EA PWM CONTROLLER RAMP GEN RS - - SAMPLE & HOLD Sync. Output 5 ( for Test use only ) FEEDBACK TRIGGER Figure 2. Block Diagram - Dual Output - Vin 1 EMI FILTER + +10.5V INHIBIT 3 UVLO & INHIBIT BIAS SUPPLY 13 +OUTPUT 12 RETURN 11 -OUTPUT 8 ADJUST 6 CASE GROUND RETURN 2 EA RAMP GEN Sync. Output ( for Test use only ) 7 5 PWM CONTROLLER SAMPLE & HOLD FEEDBACK TRIGGER 2016-05-19 M3H-SERIES (+28V Input, Single/Dual Output) Figure 3. Conducted Emmissions, Common Mode 100 90 80 70 dB -uA 60 CEO3 LIMIT 50 40 30 20 10 0 1E3 1E4 1E5 1E6 1E7 1E8 1E7 1E8 Frequency ( Hz ) Figure 4. Conducted Emmissions, Normal Mode 100 90 80 70 d B-u A 60 CEO3 LIMIT 50 40 30 20 10 0 1E3 1E4 1E5 1E6 Frequency ( Hz ) 8 2016-05-19 M3H-SERIES (+28V Input, Single/Dual Output) Figure 5. Line Rejections, 28Vdc + 8Vac-p 0 -20 dB -40 -60 -80 -100 -120 1E2 1E3 1E4 1E5 Frequency ( Hz ) 9 2016-05-19 M3H-SERIES (+28V Input, Single/Dual Output) Mechanical Outline 3.00 0.500 0.080 Max. 2.000 R0.0625 4 places 0.300 0.500 0.200 13 1 12 2 11 10 0.600 9 3 8 4 7 5 6 2.000 2.300 1.400 Ref. 2.500 0.200 Typ. Non-cum. Pin Ø0.040 0.450 1.100 0.260 3.50 Ref. 0.25 Tolerance : .XX ±0.01 .XXX ±0.005 0.445 Max Pin Designation (Single/Dual) 10 Pin # Designation Pin # Designation 1 + Input 1 + Input 2 Input Return 2 Input Return 3 Inhibit 3 Inhibit 4 NC 4 NC 5 Sync. Output (T.P.) 5 Sync. Output (T.P.) 6 Case Ground 6 Case Ground 7 NC 7 NC 8 NC 8 Adjust 9 - Sense 9 NC 10 + Sense 10 NC 11 NC 11 - Output 12 Output Return 12 Output Return 13 + Output 13 + Output 2016-05-19 M3H-SERIES (+28V Input, Single/Dual Output) Device Screening Requirement MIL-STD-883 Method No Suffix EM Temperature Range — -55°C to +85°C -55°C to +85°C Element Evaluation MIL-PRF-38534 Class H w/SEM N/A Non-Destructive Bond Pull Internal Visual 2023 2017 Yes Yes N/A Temperature Cycle 1010 Cond C Cond C Constant Acceleration 2001, Y1 Axis 3000 Gs 3000 Gs PIND 2020 N/A N/A Burn-In 1015 160 hrs @ 125°C 48 hrs @ 125°C Final Electrical (Group A) MIL-PRF-38534 & Specification -55°C, +25°C, +85°C -55°C, +25°C, +85°C PDA MIL-PRF-38534 2% N/A Seal, Fine and Gross 1014 A1, C Cond A Radiographic 2012 N/A N/A External Visual 2009 Yes Notes: Best commercial practice. 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. 11 2016-05-19 M3H-SERIES (+28V Input, Single/Dual 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. 12 2016-05-19