M3L2005S IRF | Alldatasheet
Document overview
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Technical content
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 < 85 grams Magnetically Coupled Feedback 16V to 50V Input Range Up to 25W 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 Adjustable Output Voltage External Inhibit 1,500,000 Hour MTBF HYBRID-HIGH RELIABILITY RADIATION TOLERANT DC-DC CONVERTER M3H M3L-SERIES
Description
The M3L-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. Features include 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 and GSFC PPL-21 Appendix B. 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 1.5" x 2.3" x 0.425" steel package and weigh less than 85 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 M3L-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 2016-09-21 PD-94519C +28V Input, Single/Dual Output
Applications
Low Earth Orbit Satellites (LEO) Launch Vehicles
(+28V Input, Single/Dual Output) 2 2016-09-21 Circuit Description The M3L-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 allows the converter to meet the conducted emissions requirements of MIL-STD-461C on the input power leads. A single-stage output filter reduces the typical output ripple to less than 50mV 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 external inhibit port is provided to control converter operation. The converter’s oper ation 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). The output voltage of all models can be adjusted using a single external resistor. Design Methodology The M3L-Series was developed using a proven conservative design methodology which includes selecting radiation tolerance 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).
(+28V Input, Single/Dual Output) 3 2016-09-21 Specifications Absolute Maximum Ratings Input voltage range -0.5VDC to +60VDC Input voltage range +16VDC to +60VDC Output power Internally limited Input voltage range 1 +16VDC to +38VDC Lead temperature +300°C for 10 seconds Output power 0 to Max. Rated Operating temperature -55°C to +135°C Operating temperature 2 -55°C to +125°C Storage temperature -55°C to +135°C Operating temperature1 -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-1547
2 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 Limits Unit Min Nom Max Input voltage 18 28 50 V Output voltage (VOUT) M3L2803R3S M3L2805S M3L2812S M3L2815S M3L2805D M3L2812D M3L2815D M3L2803R3S M3L2805S M3L2812S M3L2815S M3L2805D M3L2812D M3L2815D 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 3.27 4.95 11.88 14.85 ±4.95 ±11.88 ±14.85 3.23 4.90 11.76 14.70 ±4.90 ±11.76 ±14.70 3.30 5.00 12.00 15.00 ±5.00 ±12.00 ±15.00 3.33 5.05 12.12 15.15 ±5.05 ±12.12 ±15.15 3.37 5.10 12.24 15.30 ±5.10 ±12.24 ±15.30 V Output power (P OUT) M3L2803R3S All Others 1,2,3 VIN = 16, 28, 50 Volts, Note 2 W Output current (IOUT) M3L2803R3S M3L2805S M3L2812S M3L2815S M3L2805D M3L2812D M3L2815D 1,2,3 V IN = 16, 28, 50 Volts, Note 2 Either Output, Note 3 Either Output, Note 3 Either Output, Note 3 6.06 5.00 2.08 1.67 4.00 1.67 1.33 A Line regulation (VR LINE) 1,2,3 VIN = 16, 28, 50 Volts IOUT = 0, 50%, 100% rated, Note 4 -0.5 0.5 % Load regulation (VRLOAD) 1,2,3 IOUT = 0, 50%, 100% rated, Note 4 VIN = 16, 28, 50 Volts -1.0 1.0 % Cross regulation (VRCROSS) M3L2805D M3L2812D M3L2815D 1,2,3 VIN = 16, 28, 50 Volts Duals only, Note 5 -5.0 -3.0 -3.0 5.0 3.0 3.0
(+28V Input, Single/Dual Output) 4 2016-09-21 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 = 28V DC ± 5%, CL = 0 unless otherwise specified Limits Unit Min Nom Max Input current, no load (IIN) M3L2803R3S M3L2805S M3L2812S M3L2815S M3L2805D M3L2812D M3L2815D 1,2,3 I OUT = 0, Pin 4 open 100 100 mA Input current inhibited 1,2,3 Pin 4 shorted to pin 2 8.0 mA Output ripple (V RIP) M3L2803R3S M3L2805S M3L2812S M3L2815S M3L2805D M3L2812D M3L2815D 1,2,3 VIN = 16, 28, 50 Volts IOUT = 100% rated load Notes 4, 6 mVp-p Switching frequency (F S) 1,2,3 Sync. Input (Pin 4) open 425 500 575 kHz Efficiency (EFF) M3L2803R3S M3L2805S M3L2812S M3L2815S M3L2805D M3L2812D M3L2815D 1,2,3 IOUT = 100% rated load Note 4 Enable input (Inhibit function) open circuit voltage drive current (sink) voltage range 1,2,3 Note 1 9.5 -0.5 11.5 500 V V Current limit point Expressed as a percentage of full rated load current 1,2,3 V OUT = 90% of Nominal, Note 4 105 130 % Power dissipation, load fault (P D) 1,2,3 Short Circuit, Overload, Note 8 14 W Output response to step load changes (V TLD) 4,5,6 Half Load to/from Full Load, Notes 4,9 -300 300 mVpk Recovery time, step load changes (T TLD) 4,5,6 Half Load to/from Full Load, Note 4,9,10 200 s Output response to step line changes (V TLN) 4,5,6 16V to/from 50V IOUT = 100% rated load, Notes 1,4,11 -300 300 mVpk Recovery time, step line changes (T TLN) 4,5,6 16V to/from 50V IOUT = 100% rated load, Notes 1,4,10,11 200 s
(+28V Input, Single/Dual Output) 5 2016-09-21 Electrical Performance Characteristics (continued) Notes: Electrical Performance Characteristics Table 1. Parameter is tested as part of design characterization or a fter 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 betw een outputs on dual output models. 5. Cross regulation is measured with 20% rated load on outpu t 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 limi t 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 devic e power dissipation with the load set such that V OUT = 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 V OUT = 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%. Parameter Group A Subgroup Conditions -55°C TC +85°C VIN = 28V DC ± 5%, CL = 0 unless otherwise specified Limits Unit Min Nom Max Turn-on response Overshoot (VOS) Turn-on Delay (TDLY) 4,5,6 No Load, Full Load Notes 4,12 2.0 500 mV ms Capacitive load (CL) M3L2803R3S M3L2805S M3L2812S M3L2815S M3L2805D M3L2812D M3L2815D 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 1 I OUT = 100% rated load DC to 50 kHz, Notes 1, 4 40 50 dB Isolation 1 Input to Output or Any Pin to Case except pin 3, test @ 500VDC 100 M Device weight 85 g MTBF MIL-HDBK-217F2, SF, 35°C 1.5 x 10 6 Hr
(+28V Input, Single/Dual Output) 6 2016-09-21 Circuit for Measuring Output Ripple Voltage Radiation Performance Characteristics Test Conditions Min Typ Highest Level Tested Unit 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 Neutron Fluence MIL-STD-883, Met hod 1017 3E12 8E12 Neutrons/cm 2 IR HiRel currently does not have does not have a DLA Land and Maritime certified Radiation Hardness Assurance Program. + Vout ReturnDUT RL for IRATED 0.1 µF 50 Coax50 Oscilliscope or Equivalent with 10 MHz Bandwidth. Multiply readings by 2. 1 µF 50 Termination
Figure 1. Block Diagram - Single Output Figure 2. Block Diagram - Dual Output
6 OUTPUT
5 OUTPUT
Figure 7. M3L2815D Line Rejections (CS01)
(+28V Input, Single/Dual Output) 11 2016-09-21 Pin Designation (Single/Dual) Mechanical Outline Pin # Designation (Single) Pin # Designation (Dual) 1 + Input 1 + Input
2 Input Return 2 Input Return
3 Case 3 Case
4 Inhibit 4 Inhibit
5 Output Adjust 5 Output Adjust
6 Output Return 6 - Vout
8 NC 8 + Vout
Pin ø 0.040 ø 0.128
4 Plcs
2.300 1.5500.375 0.8500.350 1.500 1.750 2.000 2.80 Ref 0.250 0.425 Max 0.050 0.470 1423 0.400
2 Eq Spaces
@ 0.200 5 87 6 0.270 1.000 Ref 0.400 0.400 0.200 Tolerance: .XX = ±0.01 .XXX = ±0.005 0.220 0.25 Typ.
(+28V Input, Single/Dual Output) 12 2016-09-21 Device Screening 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 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 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 2023 Yes N/A Internal Visual 2017 Yes 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 N/A N/A Seal, Fine and Gross 1014 A1, C Cond A Radiographic 2012 N/A N/A External Visual 2009 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.
(+28V Input, Single/Dual Output) 13 2016-09-21 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.