M3G7003R3S_16 IRF | Alldatasheet
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Technical content
Features
Total Dose > 200 kRads(Si) typically usable to > 300 kRads(Si) SEE Hardened to LET up to 82 MeV.cm2/mg Low Weight < 110 grams Low Input & Output Noise Magnetically Coupled Feedback 60V to 120V DC Input Range Up to 40W Output Power Single and Dual Output Models Include High Efficiency - to 82% -55°C to +125°C Operating Temperature Range 100M @ 500VDC Isolation Under-Voltage Lockout Short Circuit and Overload Protection Output Over Voltage Limiter Remote Sense on Single Output Models Adjustable Output Voltage Synchronization Input and Output External Inhibit > 5,000,000 hour MTBF HYBRID-HIGH RELIABILITY RADIATION HARDENED DC-DC CONVERTER M3G M3G-SERIES
Description
The M3G-Series of DC-DC 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. The converters incorporate a fixed frequency single ended forward topology with magnetic feedback and an internal EMI filter that utilizes multilayer ceramic capacitors that are subjected to extensive lot screening for optimum reliability. By using two stage filtering these converters produce low input and output noise. External inhibit and synchronization input and output allow these converters to be easily incorporated into larger power systems. They are enclosed in a hermetic 3" x 2" x 0.475" package constructed of an Aluminum- Silicon-Carbide (AlSiC) base and an Alloy 48 ring frame and they weigh less than 110 grams. The package utilizes rugged ceramic feed-through copper core pins and is sealed using parallel seam welding. Manufactured in a facility fully qualified to MIL-PRF-38534, these converters are fabric ated 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 M3G-Series converters are available for system development purposes. Variations in electrical specifications and screening to meet custom requirements can be accommodated. 1 2016-06-30 PD-94532P 70V Input, Single/Dual Output
Applications
Geostationary Earth Orbit Satellites (GEO) Deep Space Satellites / Probes Strategic Weapons and Communication System
(70V Input, Single/Dual Output) 2 2016-06-30 Circuit Description The M3G-Series converters utilize a single-ended forward topology with resonant reset. The nominal switching frequency is 500 kHz. Electrical isolation and tight output regulation are achieved through the use of a magnetically coupled feedback. Voltage feed-forward with duty factor limiting provides high line rejection. An internal EMI filter reduce s the conducted emissions to less than 5mArms 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 58 volts and will shut down when the input voltage drops below 54 volts. The four volts of hysteresis reduces the possibility of line noise interfering with the converter’s start-up and shut down. An external inhibit port is provided to control converter operation. The nominal threshold relative to the input return (pin 2) is 1.4V. If 2.0 volts or greater are applied to the Inhibit pin (pin 3) then the converter will operate normally. A voltage of 0.8V or less will cause the converter to shut-down. The pin may be left open for normal operation and has a nominal open circuit voltage of 4.0V Synchronization input and output allow multiple converters to operate at a common switching frequency. Converters can be synchronized to one another or to an externally provided clock. This can be used to eliminate beat frequency noise or to avoid creating noise at certain frequencies for sensitive systems. Remote sense is provided on the single output models to compensate for voltage drops in the interconnects between the converter and the load. The output voltage of dual output models can be adjusted by a single external resistor. Design Methodology The M3G-Series was developed using a proven conserva- tive design methodology which includes selecting radia- tion tolerant and established reliability components and fully de-rating to the requi rements of MIL-STD-975 and MIL-STD-1547 except for the CDR type ceramic capaci- tors, a capacitor with 50V rating is used for in-circuit volt- age stress of less than 10V. Careful sizing of decoupling capacitors and current limiting resistors minimizes the possibility of photo-current bur n-out. Heavy d-erating of the radiation hardened power MOSFET virtually eliminates the possibility of SEGR and SEB. A magnetic feedback circuit is utilized instead of opto-couplers to minimize temperature, radiation and aging sensitivity. PSPICE and Rad SPICE were used extensively to predict and optimize circuit performance for both beginning and end-of-life. Thorough design analyses include Radiation Susceptibility (TREE), Worst Case, Stress, Thermal, Failure Modes and Effects (FMEA) and Reliability (MTBF).
(70V Input, Single/Dual Output) 3 2016-06-30 Specifications Absolute Maximum Ratings Input voltage -0.5VDC to +150VDC Input voltage range +60VDC to +120VDC Output power Internally limited Input voltage range 1 +60VDC to +100VDC Lead temperature +300°C for 10 seconds Output power 0 to Max. Rated Operating temperature -55°C to + 135°C Operating case temperature 2 -55°C to +125°C Storage temperature -55°C to +135°C Operating case temperature 1 -55°C to +70°C Recommended Operating Conditions For Notes to Electrical Performance Characteristics, refer to page 5
1 Meets de-rating per MIL-STD-975
2 For operation at +125°C see table Note 13
Electrical Performance Characteristics Parameter Group A Subgroup Conditions -55°C TC +85°C VIN = 70V DC ± 5%, CL = 0 unless otherwise specified Limits Unit Min Nom Max Input voltage 60 70 100 V Output voltage (VOUT) M3G7003R3S M3G7005S M3G7012S M3G7015S M3G7005D M3G7012D M3G7015D M3G7003R3S M3G7005S M3G7012S M3G7015S M3G7005D M3G7012D M3G7015D 2,3 2,3 2,3 2,3 2,3 2,3 2,3 I OUT = 100% rated load Note 4 I OUT = 100% rated load Note 4 3.28 4.98 11.95 14.94 ±4.98 ±11.95 ±14.94 3.24 4.93 11.84 14.80 ±4.93 ±11.84 ±14.80 3.30 5.00 12.00 15.00 ±5.00 ±12.00 ±15.00 3.32 5.02 12.05 15.06 ±5.02 ±12.05 ±15.06 3.36 5.07 12.16 15.20 ±5.07 ±12.16 ±15.20 V Output power (P OUT) M3G7003R3S All Others 1,2,3 V IN = 60, 70, 100 Volts, Note 2 0 W Output current (I OUT) M3G7003R3S M3G7005S M3G7012S M3G7015S M3G7005D M3G7012D M3G7015D 1,2,3 V IN = 60, 70, 100 Volts, Note 2 Either Output, Note 3 Either Output, Note 3 Either Output, Note 3 9.1 8.0 3.34 2.67 6.4 2.67 2.14 A Line regulation (VR LINE) 1,2,3 VIN = 60, 70, 100 Volts IOUT = 0, 50%, 100% rated, Note 4 -10 10 mV Load regulation (VRLOAD) 1,2,3 IOUT = 0, 50%, 100% rated, Note 4 VIN = 60, 70, 100 Volts -0.5 0.5 % Cross regulation (VRCROSS) M3G7005D M3G7012D M3G7015D 1,2,3 Duals only, Note 5 VIN = 60, 70, 100 Volts -5.0 -3.0 -3.0 5.0 3.0 3.0
(70V Input, Single/Dual Output) 4 2016-06-30 For Notes to Electrical Performance Characteristics, refer to page 5 Electrical Performance Characteristics (continued) Parameter Group A Subgroup Conditions -55°C TC +85°C VIN = 70V DC ± 5%, CL = 0 unless otherwise specified Limits Unit Min Nom Max Input current (IIN) 1,2,3 IOUT = 0, Pin 3 open 30 50 mA Pin 3 shorted to pin 2 2.0 5.0 Output ripple (VRIP) M3G7003R3S M3G7005S M3G7012S M3G7015S M3G7005D M3G7012D M3G7015D 1,2,3 V IN = 60, 70, 100 Volts IOUT = 100% rated load Notes 4, 6 mVp-p Switching frequency (F S) 1,2,3 Sync. Input (Pin 4) open 450 500 550 kHz Efficiency (EFF) M3G7003R3S M3G7005S M3G7012S M3G7015S M3G7005D M3G7012D M3G7015D 1,2,3 I OUT = 100% rated load Note 4 Inhibit Input open circuit voltage drive current (sink) voltage range Note 1 3.0 -0.5 5.0 100 V V Synchronization Input frequency range pulse high level pulse low level pulse transition time pulse duty cycle Ext. Clock on Sync. Input (Pin 4) Note 1 450 4.0 -0.5 600 10.0 0.5 kHz V V V/s Current Limit Point Expressed as a percentage of full rated load current 1,2,3 V OUT = 90% of Nominal, Note 4 145 % Power dissipation, load fault (PD) 1,2,3 Short Circuit, Overload, Note 8 20 W Output response to step load changes (VTLD) 4,5,6 Half Load to/from Full Load, Notes 4,9 -300 300 mVpk Recovery time, step line changes (T TLN) 60V to/from 100V I OUT =100% rated load, Notes 1,4,10,11 50 200 s Output response to step line changes (VTLN) 60V to/from 100V IOUT = 100% rated load, Notes 1, 4,11 -300 300 mVpk Turn-on Response Overshoot (V OS) Turn-on Delay (TDLY) 4,5,6 No Load, Full Load Notes 4,12 1.0 5.0 ms
(70V Input, Single/Dual Output) 5 2016-06-30 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 betwe en 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. 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 operat ion of the converter’s overload protection, causing erratic behavior during turn-on. 8. Overload power dissipation is defined as the device power dissipati on 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 V OUT 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 3) to the point where V OUT = 90% of nominal. 13. Although operation at temperatures between +85°C and +125°C is guaranteed, no parametric limits are specified. Electrical Performance Characteristics (continued) Parameter Group A Subgroup Conditions -55°C TC +85°C VIN = 70V DC ± 5%, CL = 0 unless otherwise specified Limits Unit Min Nom Max Capacitive load (CL) M3G7003R3S M3G7005S M3G7012S M3G7015S M3G7005D M3G7012D M3G7015D I OUT = 100% rated load No effect on DC performance Notes 1, 4, 7 Each output on duals 2200 1000 180 120 500 µF Line Rejection IOUT = 100% rated load DC to 50 kHz, Notes 1, 4 40 60 dB Isolation 1 Input to Output or Any Pin to Case except pin 6, test @ 500VDC 100 Device Weight 110 g MTBF MIL-HDBK-217F2, SF, 35°C 5 x 10
6 Hrs
(70V Input, Single/Dual Output) 6 2016-06-30 Fig 1. Block Diagram - Single Output Fig 2. Block Diagram - Dual Output Vin INHIBIT RETURN +OUTPUT RETURN 4SYNC. INPUT +SENSE10 -SENSE
6 CASE
5SYNC. OUTPUT LEVEL TRANSLATOR & FET DRIVE BIAS SUPPLY UNDER VO LTAGE LOCKOUT & INHIBIT EM I FILTER SHORT CIRCUIT O VERLO AD +10.5V +5V OSCILLATOR RAM P GENERATOR SAM PLE HOLD FEEDBACK T RIGGER PWM EA RS+5V+5V +O UTPUT RETURN 4SYNC. INPUT 8A D J U S T 5SYNC. OUT PUT SHORT CIRCUIT OVERLO AD OSCILLAT OR RAMP GENERAT OR SAM PLE HOLD FEEDBACK T RIGGER PWM EA +5V+5V -OUTPUT Vin INHIBIT RETURN LEVEL TRANSLATOR & F ET DRIVE BIAS SUPPLY UNDER VOLTAGE LO CKO UT & INHIBIT EMI FILT ER +10.5V +5V
(70V Input, Single/Dual Output) 7 2016-06-30 Application Notes: A) Attachment of the Converter The following procedure is recommended for mounting the converter for optimum cooling and to circumvent any potential damage to the converter. Ensure that flatness of the plate where M3G converter to be mounted is no greater than 0.003” per linear inch. It is recommended that a thermally conductive gasket is used to promote the thermal transfer and to fill any voids existing between the two surfaces. IR HiRel recommends Sil-Pad 2000 with the thickness of 0. 010". The shape of the gasket should match the footprint of the converter including the m ounting flanges. The gasket is available from IR HiRel. The M3G-Series converter requires either M3 or 4-40 size screws for attachment purposes. The procedure for mounting the converter is as follows: 1. Check all mounting surfaces and remove foreign material, burrs, if any or anything that may interfere with the attachment of the converter. 2. Place the gasket on the surface reserved for t he converter and line it up with the mounting holes. 3. Place the converter on the gasket and line both up with mounting holes. 4. Install screws using appropriate washers and tight en by hand (~ 4 in·oz) in the sequence shown below. 5. Tighten the screws with an appropriate torque driver. Torque the screws up to 6 in·lb in the sequence shown above. Radiation Performance Characteristics Test Conditions Min Typ Unit Total Ionizing Dose (Gamma) MIL-STD-883, Method 1019 Operating bias applied during exposure Full Rated Load VIN = 70V 200 300 kRads (Si) Dose Rate (Gamma Dot) Temporary Saturation Survival MIL-STD-883, Method 1023 Operating bias applied during exposure Full Rated Load VIN = 70V 1E8 4E10 1E11 Rads (Si)/sec Neutron Fluence MIL-STD-883, Method 1017 8E12 1E13 Neutrons/cm 2 Single Event Effects SEU, SEL, SEGR, SEB Heavy ions (LET) Operating bias applied during exposure Full Rated Load VIN = 70V Test lab: Brookhaven National Laboratory, Tandem Van De Graaff Generator MeVcm2 /mg IR HiRel currently does not have a DLA Land and Maritime certified Radiation Hardness Assurance Program.
(70V Input, Single/Dual Output) 8 2016-06-30 B) Output Voltage Adjustment. Single Output: Adjustment of the output voltage requires the +Sense pin be connected in one of two ways as shown in Fig 3 and 4 below. Use the equations and circuit configurations provided to calculate the required resistance (RADJ) for the applicable voltage adjust range. The output adjustment is limited to 0 to +10% range for reliable operation. Fig 3. Configuration for Adjusting Single Output Voltage from +0.25V to +10% Fig 4. Configuration for Adjusting Single Output Voltage from 0 to +0.25V M3G (single output) +Out -Sense Out Return +Sense Radj M3G (single output) +Out -Sense Out Return +Sense Radj
(70V Input, Single/Dual Output) 9 2016-06-30 For M3GXX03R3S: Using the configuration of Fig 3 and where RADJ is in Ohms and 3.513 < VOUT < 3.630 513. 3 495 OUT ADJ VR Using the configuration of Fig 4 and where RADJ is in Ohms and 3.300 < VOUT < 3.513 OUT OUT ADJ V VR 513. 3 300. 3150 For M3GXX05S: Using the configuration of Fig 3 and where RADJ is in Ohms and 5.250 < VOUT < 5.500 Using the configuration of Fig 4 and where RADJ is in Ohms and 5.500 < VOUT < 5.250 For M3GXX12S: Using the configuration of Fig 3 and where RADJ is in Ohms and 12.312 < VOUT < 13.200 Using the configuration of Fig 4 and where RADJ is in Ohms and 12.000 < VOUT < 12.312 For M3GXX15S: Using the configuration of Fig 3 and where RADJ is in Ohms and 15.315 < VOUT < 16.500 Using the configuration of Fig 4 and where RADJ is in Ohms and 15.000 < VOUT < 15.315 25. 5 750 OUT ADJ VR OUT OUT ADJ V VR 250. 5 000. 5150 312.12 1800 OUT ADJ VR OUT OUT ADJ V VR 312.12 000.12150 315.15 2250 OUT ADJ VR OUT OUT ADJ V VR 315.15 000.15150
(70V Input, Single/Dual Output) 10 2016-06-30 Dual Output: The dual output models have an Adjust pin which can be connected through a resistor (RADJ) to either output. This allows the outputs to be reliably adjusted by approximately +10% to -25% of the nominal output voltage. Refer to Fig 5 and use equations provided to calculate the required resistance (RADJ). Fig 5. Configuration for Adjusting Dual Output Voltage M3G (Dual Output) +Out Adjust Out Return -Out Radj Note 2 Note 1 Notes: 1. For Vout < Vnom 2. For Vout > Vnom For all Dual Output Models, to adjust the output voltage higher: NOMOUT NOM ADJ V V VR where: RADJ is in kOhms RADJ is connected to -Out pin and VNOM < VOUT < 1.1VNOM (Fig. 5, Note 2) VNOM is the nominal output voltage with the Adjust pin left open VOUT is the desired output voltage For all Dual Output Models, to adjust the output voltage lower: OUTNOM OUTNOM ADJ V V VVR where: RADJ is in kOhms RADJ is connected to +Out pin and 0.75VNOM < VOUT < VNOM (Fig. 5, Note 1) VNOM is the nominal output voltage with the Adjust pin left open VOUT is the desired output voltage
(70V Input, Single/Dual Output) 11 2016-06-30 Pin Designation (Single/Dual) Mechanical Outline Pin # Designation Pin # Designation 1 + Input 8 NC/ Adjust
2 Input Return 9 - Sense / NC
3 Inhibit 10 + Sense / NC
4 Sync. Input 11 NC / - Output 5 Sync. Output 12 Output Return
6 Case Ground 13 + Output
3.055 MAX. 0.500 2.00 0.45 1.10 2.5002.30 0.200 Typ. Non- cum. 0.30 1.400 Ref. 3.50 Ref. 0.475 MAX. 0.080 Max. 0.260 Pin Ø0.040 R0.0625 4 places 0.50 0.60 0.20 Tolerance : .XX ±0.01 .XXX ±0.005 0.25 2.055 MAX. FLANGE DETAIL 0.40 0.25 0.14 R0.0625
(70V Input, Single/Dual Output) 12 2016-06-30 Device Screening Notes: Best commercial practice. CK is a DLA Land and Maritime (formerly DSCC) part ma rking 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 Land and Maritime 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 qual ity/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 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 320 hrs @ 125°C (2 x 160 hrs) 320 hrs @ 125°C (2 x 160 hrs) 48 hrs @ 125°C Final Electrical (Group A) MIL-PRF-38534 & Specification -55°C, +25°C, +85°C -55°C, +25°C, +85°C -55°C, +25°C, +85°C PDA MIL-PRF-38534 2% 2% N/A Seal, Fine and Gross 1014 Cond A, C Cond A, C Cond A Radiographic 2012 Yes Yes N/A External Visual 2009 Yes Yes 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.
(70V Input, Single/Dual Output) 13 2016-06-30 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 performan ce. 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 stat ed 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 fo r technically trained staff. It is the responsibility of any customer’s technical departments to evaluate the suitab ility 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 dangerou s substances. For information on the types in question, please contact your nearest Infineon Technologies office.