HR301-2812

FEATURES • –40° to +85°C operation • 18 to 36 VDC input (19 to 36 VDC input HR301-2805) • Fully Isolated • Optocoupler feedback • Fixed frequency, 240 to 300 kHz typical • Topology – Push-Pull Forward • 50 V for up to 50 ms transient protection • Inhibit function • Indefinite short circuit protection • Remote sense on HR301-2805 model • Up to 86% efficiency DC/DC CONVERTERS 28 VOLT INPUT HR300 SERIES 30 WATT MODELS VDC OUTPUT SINGLE 5 12 15 DUAL ±12 ±15 Size (max.): 2.720 x 1.350 x 0.505 inches (69.09 x 34.29 x 12.83 mm) See Section B8, case J5, for dimensions. Weight: 60 grams max. Screening: Standard only. See Section C2 for screening description. DESCRIPTION HR300 Series™ DC/DC converters combine the small size and high reliability of hybrid-based components, the high efficiency of switching regulators, and the isolation, regulation, and low noise characteristics of linear regulators. SMALL SIZE AND RELIABILITY HR300 DC/DC converters use thick-film hybrid manufacturing techniques for smaller size, lighter weight and higher reliability than converters produced with other circuit techniques. With a footprint of less than 3.7 square inches and a 0.5 inch height, the HR300 converters reach power densities up to 22 watts per cubic inch. The HR300 parts use the same manufacturing procedures and quality controls that Interpoint applies to converters built for aerospace and military applications. The converters are hermetically sealed in metal packages that are guaranteed a maximum leak rate of less than 10-3 atm-cc/sec. Short circuit protection is provided through foldback current limiting. When the output current reaches approximately 125% of the full rated load, the output voltage begins to reduce to protect the converter. The converter can sustain a true short circuit condition indefinitely. The HR300’s flanged case facilitates removal of heat and provides for mechanically secure mounting. If full power operation or indefinite short circuit protection is a system requirement, the HR300 converter should be mounted with an efficient heat sink in contact with the mounting flange. Internal filters in all HR300 converters provide low noise on both the input and outputs. On HR301 models, two-section L-C filters limit output ripple voltage and reflected input ripple current. On HR302 models, single-section L-C filters perform the same function. For maximum output regulation, the HR301-2805 is provided with external output voltage remote sense pins. Connecting the remote sense pins to the load provides a four-terminal voltage mode which eliminates the adverse effects of line resistance voltage drops. Remote sense pins may be left unconnected, but see cautions in this data sheet. For normal operation, remote sense pins should be connected to the respective output pins. HIGH PERFORMANCE HR300 converters use a constant frequency pulse-width modulated switching regulator design operating in the forward mode with a clock switching frequency of 240 to 300 kHz. Isolation is achieved through the use of a transformer in the forward power circuit and an optocoupler in the feedback control loop. The full load output power of 30 watts is available over the entire 18 to 36 VDC input range (19 to 36 HR301-2805). On dual output models, up to 90% of full power is available from either output up to a combined total of 30 watts. The HR300’s high efficiency is maintained over the entire input voltage range and from approximately 25% of full load to full load (see typical efficiency curves). INHIBIT FUNCTION An inhibit is provided to allow a logic input to shut down the converter. An open circuit on the inhibit pin (pin 2 or 8) allows normal operation. A connection between the inhibit pin and the input common (pin 10) disables the internal oscillator, shutting down the output. The inhibit pin has an open circuit voltage of 11 to 16 V on single output models, 8 to 12 V on HR302-2812 and 10 to 14 V on HR302-2815. In the inhibit mode, approximately 1 mA must be sunk from the inhibit pin. An active low open collector is required to activate the inhibit function. B4-39 HR300 SERIES 30 WATT ABSOLUTE MAXIMUM RATINGS Input Voltage • 18 to 36 VDC (19 to 36 VDC HR301-2805) Output Power • 30 watts Lead Soldering Temperature (10 sec per lead) • 300°C Storage Temperature Range (Case) • –55°C to +125°C DC/DC CONVERTERS INHIBIT Inhibit TTL Open Collector • Logic low (output disabled) Inhibit pin current 1 mA typical • Referenced to input common • Logic high (output enabled) Open collector TYPICAL CHARACTERISTICS Output Voltage Temperature Coefficient • 100 ppm/°C typical Input to Output Capacitance • 80 pF typical single output models • 70 pF typical HR302-2812 • 60 pF typical HR302-2815 Current Limit • 125% of full load, typical Isolation • 100 megohm minimum at 500 V Conversion Frequency • 240 to 300 kHz Inhibit Pin Voltage (unit enabled) • 11 to 16 V single output models • 8 to 12 V HR302-2812 • 10 to 14 V HR302-2815 RECOMMENDED OPERATING CONDITIONS Input Voltage Range • 18 to 36 VDC continuous 19 to 36 VDC HR301-2805 • 50 V for 50 msec transient Case Operating Temperature (Tc) • –40°C to +85°C full power Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified. SINGLE OUTPUT MODELS PARAMETER OUTPUT VOLTAGE OUTPUT CURRENT OUTPUT POWER OUTPUT RIPPLE LINE REGULATION1 LOAD REGULATION2 INPUT VOLTAGE –40°C TO +85°C INPUT CURRENT –40°C TO +85°C BW ≤ 2 MHz MIN. TO MAX. VIN NO LOAD TO FULL NO LOAD TO FULL TRANSIENT 50 ms NO LOAD FULL LOAD INHIBITED INPUT RIPPLE CURRENT EFFICIENCY START-UP DELAY2 OVERSHOOT BW ≤ 2 MHz — 79 — — 5 82 15 500 15 — — — — 80 — — 10 84 30 1200 25 — — — — 82 — — 10 86 40 1500 25 — — — mA p-p % ms mV CONDITIONS HR301-2805 MIN 4.95 — — — — — 19 — — — — TYP 5.0 — — 30 7 5 28 — 15 — — MAX 5.05 6.0 30.0 60 25 25 36 50 20 1370 15 HR301-2812 MIN 11.88 — — — — — 18 — — — — TYP 12 — — 30 10 10 28 — 20 — — MAX 12.12 2.5 30.0 70 40 40 36 50 35 1400 22 MIN 14.85 — — — — — 18 — — — — HR301-2815 TYP 15 — — 30 10 10 28 — 20 — — MAX 15.15 2.0 30.0 75 40 40 36 50 35 1400 22 mA UNITS VDC A W mV p-p mV mV VDC Notes 1. For HR301-2805, with the remote sense pins connected to the load and no resistance between the output pins and load. 2. A low output impedance power source is required on the input to realize this start-up time. If less than full surge current is available, start-up time will be longer CAUTION Permanent damage to the HR301-2805 will result if pin 6 is shorted to ground. Damage may also result if pin 4 or pin 5 is disconnected from the load during operation with the remote sense leads connected to the load. If remote sense pins are not connected to the load, the output voltage of the HR301-2805 will rise to approximately 6.2 VDC measured across pins 4 and 5. B4-40 DC/DC CONVERTERS TRIPLE OUTPUT MODELS PARAMETER OUTPUT VOLTAGE CONDITION +VOUT – VOUT OUTPUT CURRENT1 OUTPUT POWER1 OUTPUT RIPPLE VOLTAGE LINE REGULATION LOAD REGULATION CROSS REGULATION2 –40°C to +85°C BW ≤ 2 MHz VIN = 18 TO 36 NO LOAD TO FULL +VOUT – VOUT INPUT VOLTAGE –40°C to +85°C INPUT CURRENT CONTINUOUS TRANSIENT 50 ms NO LOAD FULL LOAD INHIBITED BW ≤ 2 MHz DELAY3 OVERSHOOT MIN 11.88 11.88 — — — — — — — 18 — — — — — 80 — — HR302-2812 TYP MAX 12.0 12.0 — — 50 10 20 2.5 2.5 28 — 35 — — 15 84 60 1500 12.12 12.12 2.5 30.0 90 30 60 3.5 3.5 36 50 50 1350 24 60 — — — MIN HR302-2815 TYP MAX 15.0 15.0 — — 50 10 20 2.2 2.2 28 — 45 — — 15 85 60 1500 15.15 15.15 2.0 30.0 90 40 60 3.2 3.2 36 50 60 1400 24 60 — — — mA VDC A W mV p-p mV mV % UNITS VDC 14.85 14.85 — — — — — — — 18 — — — — — 81 — — HR300 SERIES 30 WATT Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified. INPUT RIPPLE CURRENT EFFICIENCY START-UP mA p-p % ms mV Notes 1. Up to 90% of full power is available from either output providing the total power does not exceed 30 watts. 2. The effect on the output voltage of either output (held at 3 watts) when the other output is varied from 3 to 27 watts. 3. A low output impedance power source is required on the input to realize this start-up time. If less than full surge current is available, start-up time will be longer PIN OUT Pin 1 2 3 4 5 6 7 8 9 10 HR301-2805 Positive Input Inhibit Sense Return Output Common Positive Output Positive Sense Case Ground No connection No connection Input Common Single Output Positive Input Inhibit No connection Output Common Positive Output No connection Case Ground No connection No connection Input Common Dual Output Positive Input No connection Positive Output Output Common Negative Output No connection Case Ground Inhibit Input Common Input Common Squared corner and dot on top of cover indicate pin one. 1 2 3 4 5 BOTTOM VIEW HR300 See Section B8, case J5, for dimensions. 10 9 8 7 6 FIGURE 1: PIN OUT MODEL NUMBERING KEY HR30 Base Model Number of Outputs (1 = single, 2 = dual) Input Voltage Output Voltage 2 - 28 12 B4-41 HR300 SERIES 30 WATT 88 86 84 19 V 82 80 78 76 74 72 70 68 5 10 15 20 25 30 36 V 28 V DC/DC CONVERTERS Typical Performance Curves: 25°C Tc 88 86 18 V 84 82 80 78 76 74 72 70 68 5 10 15 20 25 30 36 V 28 V 88 86 84 18 V 28 V 82 80 78 76 74 72 70 68 5 10 15 20 25 30 36 V Efficiency (%) Output Power (Watts) Efficiency (%) Efficiency (%) Output Power (Watts) Output Power (Watts) HR301-2805 Efficiency FIGURE 2 HR301-2812 Efficiency FIGURE 3 HR302-2812 Efficiency FIGURE 4 88 86 84 82 80 78 76 74 72 70 68 5 10 15 20 25 30 36 V 18 V 18 28 V 18 Input Voltage (Volts) Inupt Voltage (Volts) 17 HR301-2812 16 HR301-2815 15 17 Efficiency (%) HR302-2815 16 HR302-2812 15 14 5 10 15 20 25 30 14 5 10 15 20 25 30 Output Power (Watts) Output Power (Watts) Output Power (Watts) HR302-2815 Efficiency HR301-2812 and HR301-2815 Low Line Dropout HR302-2812 and HR302-2815 Low Line Dropout FIGURE 5 FIGURE 6 FIGURE 7 B4-42 24421-009-DTS Rev A DQ# 2009 All technical information is believed to be accurate, but no responsibility is assumed for errors or omissions. Interpoint reserves the right to make changes in products or specifications without notice. HR300 Series is a trademark of Interpoint. Copyright © 1991 - 1999 Interpoint. All rights reserved. CASE J CASES Dot on top of case indicates pin one CASE J BOTTOM VIEW See Figures 36 - 40 for pin configuration 1.350 max (34.29) 2.720 max (69.09) Flange Thickness: Cases J1 and J5 Case J2 Cases J3 and J4 0.060 (1.52) 0.073 (1.85) max 0.067 +0.005/-0.007 (1.70 +0.13/-0.8) Materials Header Case J1 Cold Rolled Steel/Nickel/Gold Cases J2 - J5 Cold Rolled Steel/Nickel/Tin Cover Case J1 Kovar/Nickel Case J2 - J5 Cold Rolled Steel/Nickel/Tin Pins #52 alloy (all cases) Case J1 MHV Series Triple – compression glass seal MTR Series Triple – ceramic seal Cases J2 - J5 compression glass seal Case dimensions in inches (mm) Tolerance ±0.005 (0.13) for three decimal places ±0.01 (0.2) for two decimal places unless otherwise specified CAUTION Heat from reflow or wave soldering may damage the device. Solder pins individually with heat application not exceeding 300°C for 10 seconds per pin. FIGURE 35: CASE J MAXIMUM DIMENSIONS Note: Although every effort has been made to render the case drawings at actual size, variations in the printing process may cause some distortion. Please refer to the numerical dimensions for accuracy. B8-22 CASES BOTTOM VIEW CASE J4 (Rev B) Flanged cases: Designator required in Case Option position of model number. FMD28-461 EMI Filter (down-leaded): Screening – Standard or ES Solder Seal 1.173 (29.79 0.040 dia. (1.02) 0.673 (17.09) CASE J Squared corner and dot on top of case indicate pin one. 1 2 0.162 dia (4.11) Solder Tip-off 0.173 (4.39) 0.000 0.210 (5.33) 0.170 (4.32) 1.370 (34.80) 0.25 (6.4) 0.505 max (12.83) 1.770 (44.96) 0.000 0.000 2.150 (54.61) 0.162 dia (4.11) 2.150 (54.61) 5 4 3 FIGURE 39: CASE J4 BOTTOM VIEW CASE J5 (Rev B) Flanged cases: Designator required in Case Option position of model number for MHL Series and MTO Series only. MHL Series, MTO Series, MTW Series: Screening – Standard or ES HR300 Series: no screening options Solder Seal 1.173 (29.79 0.040 dia. (1.02) 0.673 (17.09) Squared corner and dot on top of case indicate pin one. 1 2 3 4 5 Solder Tip-off 0.173 (4.39) 0.000 0.25 (6.4) 0.210 (5.33) 0.170 (4.32) 0.570 (14.48) 0.970 (24.64) 1.370 (34.80) 0.505 max (12.83) 1.770 (44.96) 0.000 0.000 10 9 8 7 6 FIGURE 40: CASE J5 mounting hole dimension corrected to 2.150 (rev 20060626) ® B8-25 QA SCREENING HR PRODUCTS HR PRODUCTS TEST (HR products) PRE-CAP INSPECTION Method 2017 FINAL ELECTRICAL TEST MIL-PRF-38534, Group A Subgroups 1 and 4: +25°C case HERMETICITY TESTING Gross Leak, Dip (1 x 10-3) FINAL VISUAL INSPECTION Method 2009 STANDARD yes yes yes yes Test methods are referenced to MIL-STD-883 as determined by MILPRF-38534. Applies to the following products: HR700 Series HR300 Series HR150 Series HR120 Series HR40 Series C2-13