PD-97829 DH5001R803R3P 50V Input, Regulated Dual Outputs HIGH RELIABILITY, RADIATION HARDENED, LOW POWER, DC-DC CONVERTER Description The DH-Series of DC-DC converters are low power radiation hardened, high reliability devices designed for hostile radiation environments such as those encountered by geostationary earth orbit satellites, deep space probes and communication systems. Features include small size, high efficiency, low weight, and a good tolerance to total ionizing dose, single event effects, and environmental stresses such as temperature extremes, mechanical shock, and vibration. All components are fully derated to meet the requirements of EEE-INST-002 and MIL-STD-1547B. Extensive documentation including worst case analysis, radiation susceptibility, thermal analysis, stress analysis, and reliability analysis are available. The DH-Series converters have two outputs, each is independently regulated. Two versions exist; One version providing two positive outputs and one version providing one negative and one positive output. The DH-Series converters incorporate a fixed frequency flyback power converter and internal EMI filter that meets the requirements for most major satellite power buses. The converters can be remotely turned on and off via an inhibit pin. Additional inhibit pins are also included to control the outputs individually. This feature facilitates turn-on outputs sequencing if desired. Each converter is encased in a cold rolled steel hermetic package. The package measures 1.80"L x 1.40"W x 0.42"H and weighs less than 55 grams. The package utilizes rugged ceramic feed-through copper pins and is hermetically sealed using parallel seam welding. Two package options are available. Please refer to page 8 for I/O configurations. Environmental screening includes temperature cycling, constant acceleration, fine and gross leak, and burn-in as specified by MIL-PRF-38534 for class K hybrids. Features n n n n n n n n n n n n n n Total Dose > 100k Rad(Si) SEE > 82MeV.cm2/mg Low Weight < 55 grams 26V to 55V DC Input Range Up to 10W Output Power Independently Regulated Outputs: +1.8V and +3.3V -55°C to +80°C Operating Temperature Range 100MΩ @ 100VDC Isolation Input Under-Voltage Protection Meets Conducted Emission Requirements of Most Major Power Buses: 100Hz - 100kHz: 80dBµArms 100kHz - 10MHz: Log-linear Decrease 10MHz - 50MHz: 40dBµArms Short Circuit and Overload Protection Meets the Derating Requirments of EEE-INST-002 and MIL-STD-1547B On/Off Control via Converters’s Inhibit Pin and Individual Output’s Inhibit Pin High CS Damping Applications n Launch Vehicles n Communication Systems n Geostationary or Low Earth Orbit Satellites Non-flight versions of the DH-Series converters are available for system development purposes. Variations in electrical specifications and screening to meet custom requirements can be accommodated. www.irf.com 1 12/08/15 DH5001R803R3P (50V Input, Regulated Dual Outputs) Circuit Description The DH-Series DC-DC converters utilize two-stage regulation with a flyback topology with a switching frequency of 250kHz for primary regulation and linear post regulation in the secondary for each of the outputs. Output power is limited under any load fault condition to approximately 110% of rated output. 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. There are no latching elements to eliminate the possibility of falsely triggering the protection circuits during single event radiation exposure. An inhibit pin is provided to control converter operation. This inhibit pin is intended for operation with an open collector transistor drive or a relay closure to the input return. The pin may be left open for normal operation and has a nominal open circuit voltage of 7V. Also provided are the individual output on/off control pins (Pin 10-Output 1 Inhibit and Pin 9-Output 2 Inhibit). Design Methodology The DH-Series is developed using a proven conservative design methodology, which includes selecting radiation tolerant and established reliability components and fully derating to the requirements of EEE-INST-002 and MIL-STD1547B. Heavy derating of the radiation-hardened power MOSFET virtually eliminates the possibility of SEGR and SEB. An under-voltage protection circuit prohibits the converter from operating when the line voltage is too low for safe operation. The converter will not start until the line voltage rises to approximately 24V. 2 www.irf.com DH5001R803R3P (50V Input, Regulated Dual Outputs) Specifications Absolute Maximum Ratings Recommended Operating Conditions Input voltage range -0.5Vdc to +80Vdc Input voltage range (Note 13) 26Vdc to 55Vdc Output power Internally limited 0 to Max. Rated Lead temperature Output power +300°C for 10sec Operating temperature -55°C to +115°C Operating case temperature (Note 12) -55°C to +125°C Operating temperature, -55°C to +80°C Storage temperature derated (Note 13) -55°C to +135°C Electrical Performance Characteristics Parameter Group A Subgroup Conditions -55°C ≤ TC ≤ +85°C VIN = 50V DC ± 5%, CL = 0 unless otherwise specified Input Voltage Output voltage (VOUT) Limits Nom Max 26 50 55 V V (Out 1/Out 2) 1 1.8V 1 1.782 1.800 1.818 3.3V 1 3.267 3.300 3.333 1.8V 2,3 1.746 1.800 1.854 3.3V 2,3 3.200 3.300 3.399 IOUT = 100% rated load Unit Min (Out 1/Out 2) V Output power (POUT) 1.8V 1,2,3 3.3V Output current (IOUT) 1.8V 1,2,3 3.3V 1,2,3 Line regulation (VRLINE) 1,2,3 2.7 Either Output 0 0 VIN = 26, 50, 55V, Notes 2, 11 0 1.50 0 1.50 -0.2 0.2 % -0.5 1.5 % VIN = 26, 50, 55V, Notes 2,11 Either Output VIN = 26, 50, 55V IOUT = 0%, 50%, 100% rated W 5.0 A Load regulation (VRLOAD) 1,2,3 IOUT = 0%, 50%, 100% rated Cross regulation (VRCROSS) 1,2,3 VIN = 26, 50, 55V, Note 1 5.0 mV IOUT = 0, Pin 6 open Pin 6 connected to Pin 2 35 5.0 mA 1,2,3 50 mV p-p VIN = 26, 50, 55V Input current (IIN) Output ripple (VRIP) Each Output 1.8V 1,2,3 3.3V 3.3V IOUT = 100% rated load 50 Note 3 Output ripple @ switch frequency 1.8V VIN = 26, 50, 55V 1,2,3 VIN = 26, 50, 55V IOUT = 100% rated load, Note 1 0.5 0.75 0.5 0.75 mV rms For Notes to Electrical Performance Characteristic Table, refer to page 5 www.irf.com 3 DH5001R803R3P (50V Input, Regulated Dual Outputs) Electrical Performance Characteristics Parameter (continued) Group A Subgroup Conditions -55°C ≤ TC ≤ +85°C VIN = 50V DC ± 5%, CL = 0 unless otherwise specified 1,2,3 IOUT = 100% rated load Limits Unit Min Nom 45 49 Max Efficiency (EFF) % Inhibit Input Open circuit voltage Note 1 7.0 V Drive current (sink) 600 µA Voltage range 50 V 145 145 % 24 W 15 15 mV pk 500 µs Current Limit Point Each output 1,2,3 1.8V 3.3V Power dissipation load fault (PD) 1,2,3 Output response to step load changes (VTLD) 1.8V 3.3V Recovery time, step load changes (TTLD) Recovery time, step line changes (TTLN) Capacitive Load (CL) Turn-on Response Overshoot (VOS) Turn-on Delay (TDLY) VOUT = 90% of Nominal Note 10 105 105 Short Circuit, Overload, Note 5 Half Load to/ from Full Load, Note 6 4,5,6 -15 -15 4,5,6 Half Load to/from Full Load, Notes 6, 7 4,5,6 26V to/from 55V IOUT = 100% rated load, Notes 1, 7, 8 100 µs 1 IOUT = 100% rated load No effect on DC performance Each Output, Notes 1, 4 220 µF 10% Load, Full Load Note 9 25 mV 10 ms 4,5,6 Enable Input (Inhibit) Open circuit voltage 1,2,3 Note 1 Drive current (sink) Voltage range 0 10 V 100 µA 0.4 V For Notes to Electrical Performance Characteristic Table, refer to page 5 4 www.irf.com DH5001R803R3P (50V Input, Regulated Dual Outputs) Electrical Performance Characteristics Parameter EMC conducted susceptibility (Line rejection) Electromagnetic Interference (EMI), conducted emission (CE) Isolation (continued) Group A Subgroup Conditions -55°C ≤ TC ≤ +85°C VIN = 50V DC ± 5%, CL = 0 unless otherwise specified 1 IOUT = 100% rated load Primary power sine wave injection of 2Vp-p, 100Hz to 50MHz, Note 1 1 IOUT = 100% rated load, Note 1 1 Input to Output or Any Pin to Case except pin 3, test @ 100 VDC Limits Unit Min Nom 80 90 dB Limits per Figure 1 100 Device Weight MTBF Max MΩ 55 MIL-HDBK-217F2, SF, 35°C 100.000 g Hours Notes: Specification and Electrical Performance Characteristics 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. Parameter is tested as part of design characterization or after design changes. Thereafter, parameter shall be guaranteed to the limits specified. Parameter verified during line and load regulation tests. Guaranteed for a D.C. to 20MHz bandwidth. Tested using a 20KHz to 10MHz bandwidth. 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. Overload power dissipation is defined as the device power dissipation with the load set such that both outputs are in a short circuit mode. Load step transition time < 10 µsec. Recovery time is measured from the initiation of the transient to where VOUT has returned to within ±1% of its steady state value. Line step transition time < 100 µsec. 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 6) to the point where VOUT = 90% of nominal. Current limit point expressed as a percentage of full rated load current. For models with two positive outputs the envelope specification for the design is that each output voltage is limited to the range 1V to 5V. Although operation at temperatures between +85°C and +125°C is guaranteed, no parameter limits are specified. Meets the derating requirements of EEE-INST-002 and MIL-STD-1547B – except for ceramic capacitors with voltage stress below 10V will minimum be rated at 50V and a minimum load of 20mA on each output. www.irf.com 5 DH5001R803R3P (50V Input, Regulated Dual Outputs) Device Screening Test / Inspection Method /EM Suffix Flight (No Suffix) MIL-STD-38534 Class K equivalent with SEM N/A X Nondestructive Bond Pull MIL-STD-883, Method 2023 N/A X Internal Visual MIL-STD-883, Method 2017 N/A X Temperature Cycling MIL-STD-883, Method 1010 N/A Condition C Constant Acceleration MIL-STD-883, Method 2001, Y1 Axis N/A 3000 G’s MIL-STD-883, Method 2020 N/A A Element Evaluation PIND Burn-in (2 x 220 hours) Final Electrical (Group A) MIL-STD-883, Method 1015 48 Hours @ 115°C 440 Hours @ 115°C In accordance with device specification X X MIL-STD-883, Method 1014 Condition A Seal Fine Leak A1 Gross Leak C Radiographic MIL-STD-883, Method 2012 N/A N/A External Visual MIL-STD-883, Method 2009 Note 1 X Note 1: Best commercial practice. Radiation Performance Characteristics Test Conditions Min Unit Total Ionizing Dose (Gamma) MIL-STD-883, Method 1019.5 Operating bias applied during exposure, 100 KRads (Si) 82 MeV·cm /mg Full Rated Load, VIN = 50V Heavy Ions (LET) Single Event Effects * Operating bias applied during exposure, SEU, SEL, SEGR, SEB Full Rated Load, VIN = 26, 50, 55V 2 * Test performed at TAMU 6 www.irf.com DH5001R803R3P (50V Input, Regulated Dual Outputs) Fig. 1 - EMI Conducted Emission Performance Limit Fig. 2 - A Typical input EMI Conducted Emission Performance www.irf.com 7 DH5001R803R3P (50V Input, Regulated Dual Outputs) Mechanical Outline - Option A (Straight Pins) Chamfer 45° 1RQFXP 5HI 3LQ All dimensions are in inch. .XX: ±0.01 .XXX: ±0.005 0D[ Mechanical Outline - Option B (Down Pins) Ø 0.140 0.050 0.400 1.30 1.550 1.800 0.200 Typ. Non-cum 1.000 Ref. Pin Ø 0.040 0.220 1.400 0.41 1.650 1.90 1.70 0.15 0.420 Max. 8 All dimensions are in inch. .XX: ±0.01 .XXX: ±0.005 www.irf.com DH5001R803R3P (50V Input, Regulated Dual Outputs) Block Diagram Note: Pins 8 and 11 are internally connected. Pins 3 and 4 are tied to case and are isolated from both primary and secondary circuit grounds. Pin Designation Pin # www.irf.com Name 1 Input 2 Input Return 3 Case 4 Case 5 UVP Adjust 6 Inhibit 7 Output 2 8 Output 2 Return 9 Output 2 Inhibit 10 Output 1 Inhibit 11 Output 1 Return 12 Output 1 9 DH5001R803R3P (50V Input, Regulated Dual Outputs) Part Numbering DH 50 01R8 03R3 P A A /EM Model DH = Two Outputs, 5W max each, Radiation-hardened Design Input Voltage 50 = 50V Output Voltage 1 01R8 = 1.8V Output Voltage 2 03R3 = 3.3V Quality Level EM = Engineering Model K = Class K per MIL-PRF-38534 Lead Finish A = Solder Dipped C = Gold Plated Blank = for EM, Lead finish as available I/O Pin Option A = Straight Pins B = Down Pins Output Configuration P = Both Positive WORLD HEADQUARTERS: 101 N, Sepulveda Blvd., El Segundo, California 90245, USA Tel: (310) 252-7105 IR SAN JOSE: 2520 Junction Avenue, San Jose, California 95134, USA Tel: (408) 434-5000 Visit us at www.irf.com for sales contact information. Data and specifications subject to change without notice. 12/2015 10 www.irf.com