FEATURES DC/DC CONVERTERS 28 VOLT INPUT • –40°C to +85°C operation • 16 to 40 VDC input (19 to 40 VDC input for 15 volt output models) • Fully Isolated • Optocoupler feedback • 600 kHz typical operating frequency • Topology – Single Ended Forward • 50 V for up to 50 ms transient protection • Inhibit function • Indefinite short circuit protection • Up to 83% efficiency HR120 SERIES 12 WATT MODELS VDC OUTPUT SINGLE 5 12 15 DUAL ±12 ±15 Size (max.): 1.460 x 1.130 x 0.330 inches (37.08 x 28.70 x 8.38 mm) See Section B8, case E1 for dimensions. Weight: 21 grams typical. Screening: Standard only. See Section C2 for screening description. DESCRIPTION The HR120 Series™ of DC/DC converters offers up to 12 watts of power from single or dual outputs in a single package over a –40°C to +85°C temperature range. Thick film hybrid manufacturing technology produces high levels of miniaturization, giving the HR120 Series converters a low profile (0.330 inch), small board area (1.65 square inches), and high power density (22 watt/in3). The parts are packaged in sealed steel enclosures, making them ideal for use in high reliability applications. Each unit is guaranteed to pass a hermeticity test with a maximum leak rate of 0.001 atmcc/sec. DESIGN METHODOLOGY The HR120 converters are switching regulators which use a quasisquare wave, single ended forward converter design with a nominal switching frequency of 600 kHz. Isolation between input and output circuits is provided with a transformer in the forward power loop and a temperature insensitive optical link in the feedback control loop. Output regulation is accomplished with constant frequency pulse width modulation. Both line and load regulation are typically within 10 mV. On dual output models, the positive output is independently regulated and the negative output is cross-regulated. Figures 7 and 8 illustrate what effects load changes have on the negative output. Indefinite short circuit protection and overload protection are provided by sensing output load current and restricting the output current to approximately 125% of full load output current. Since the output current is sensed in the secondary stage, the result is a predictable, constant output current control with no foldback characteristics. HR120 converters are provided with internal filtering elements on both the input and output to help reduce the need for external components. WIDE VOLTAGE RANGE The 5 and 12 volt output models provide full power operation over the input voltage range of 16 to 40 volts (19 to 40 volts for 15 volt output models). Operation below 16 volts (or below 19 volts for the 15 volt output models), including operation in MIL-STD-704E emergency power conditions, is possible with derated output power. Please refer to the low voltage drop-out graphs, Figures 9 and 10. The HR120 Series provides full power operation at case temperatures from –40°C up to +85°C. Depending on operating levels, air flow, and ambient temperature, heat sinking may be required. INHIBIT FEATURE An inhibit terminal is provided that can be used to disable internal switching, resulting in a very low quiescent input current. An open collector TTL compatible low (≤0.8 V) is required to control the inhibit function. This level may be supplied by an open collector gate since the inhibit pin is provided with an internal pull-up resistor. B4-47 HR120 SERIES 12 WATT DC/DC CONVERTERS ABSOLUTE MAXIMUM RATINGS INHIBIT TYPICAL CHARACTERISTICS Input Voltage • 16 to 40 VDC • 19 to 40 VDC 15 volt outputs Output Power • 12 watts (10 watts HR121-2805) Lead Soldering Temperature (10 sec per pin) • 300°C Storage Temperature Range (Case) • –55°C to +125°C Inhibit TTL Open Collector • Logic low (output disabled) Logic low 0.8 V max Inhibit pin current 4 mA max • Referenced to input common • Logic high (output enabled) Open collector Output Voltage Temperature Coefficient • 150 ppm/°C, typical Input to Output Capacitance • 50 pF, typical Current Limit • 125% of full load, typical Isolation • 100 megohm minimum at 500 V Conversion Frequency • 600 kHz typical Inhibit Pin Voltage (unit enabled) • 8 to 11 V RECOMMENDED OPERATING CONDITIONS Input Voltage Range • 16 to 40 VDC continuous • 19 to 40 VDC continuous 15 volt outputs • 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 HR121-2805 HR121-2812 HR121-2815 MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS OUTPUT VOLTAGE 4.95 5.0 5.05 11.88 12 12.12 14.85 15 15.15 VDC OUTPUT CURRENT — — 2.0 — — 1.0 — — 0.8 A — — 10 — — 12 — — 12 W OUTPUT POWER OUTPUT RIPPLE CONDITIONS MIN. TO MAX. VIN 10 kHz to 2 MHz — 40 60 — 30 60 — 25 50 mV p-p LINE REGULATION MIN. TO MAX. VIN — 10 50 — 10 50 — 10 50 mV LOAD REGULATION NO LOAD TO FULL — 10 50 — 10 50 — 10 50 mV INPUT VOLTAGE NO LOAD TO FULL 16 28 40 16 28 40 19 28 40 TRANSIENT 50 ms — — 50 — — 50 — — 50 INPUT CURRENT NO LOAD — 20 30 — 20 30 — 20 30 FULL LOAD — — 478 — — 548 — — 535 INHIBITED — 2 3 — 2 3 — 2 3 VDC mA INPUT RIPPLE CURRENT 10 kHz TO 2 MHz EFFICIENCY LOAD FAULT1 START-UP — 135 180 — 150 200 — 150 220 mA p-p 74 77 — 77 81 — 80 83 — % POWER DISSIPATION OVERLOAD — — 5 — — 5 — — 5 SHORT CIRCUIT — – 3.5 — — 2.8 — — 2 DELAY — 180 300 — 80 200 — 150 250 Notes 1. Indefinite short circuit protection not guaranteed above 85°C case temperature. B4-48 W ms HR120 SERIES 12 WATT DC/DC CONVERTERS Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified. DUAL OUTPUT MODELS PARAMETER OUTPUT VOLTAGE OUTPUT RIPPLE VOLTAGE MIN HR122-2815 TYP MAX MIN +VOUT 11.88 12.0 12.12 14.85 15.0 15.15 – VOUT 11.82 12.0 12.18 14.77 15.0 15.23 OUTPUT CURRENT1, 2 OUTPUT POWER2 HR122-2812 TYP MAX CONDITION — 0.5 1.0 — 0.4 0.8 +VOUT — — 10.8 — — 10.8 – VOUT — — 10.8 — — 10.8 TOTAL — — 12 — — 12 10 kHz TO 2 MHz — 30 60 — 30 60 +VOUT — 5 50 — 5 50 MIN. TO MAX. VIN – VOUT — 30 150 — 30 150 LOAD REGULATION +VOUT — 5 50 — 10 50 NO LOAD TO FULL – VOUT — 30 150 — 30 150 20% TO 80% LOAD3 — 5 10 — 4 8 50% LOAD4 — 4 5 — 3 5 INPUT VOLTAGE INPUT CURRENT VDC A LINE REGULATION CROSS REGULATION UNITS W mV p-p mV mV % CONTINUOUS 16 28 40 19 28 40 TRANSIENT 50 ms — — 50 — — 50 NO LOAD FULL LOAD INHIBITED — — — 25 — 1.9 35 545 3 — — — 25 — 1.9 35 540 3 mA VDC INPUT RIPPLE CURRENT 10 kHz TO 2 MHz EFFICIENCY LOAD FAULT5 START-UP — 175 240 — 175 240 mA p-p 78 81 — 80 83 — % POWER DISSIPATION OVERLOAD — — 2.8 — — 2 SHORT CIRCUIT — — 5 — — 5 DELAY — 150 250 — 150 250 W ms Notes 1. Applies to both outputs. 2. Maximum combined output power is 12 watts. A maximum of 90% is available from either output. 3. 20% to 80% load on the positive output and 80% to 20% on the negative output. See Figure 8. 4. 50% load on the positive output and 50% to 20% load on the negative output. 50% load on the negative output and 50% to 20% load on the positive output. See Figure 7. 5. Indefinite short circuit protection not guaranteed above 85°C case temperature. PIN OUT Pin 1 2 3 4 5 6 7 8 Single Output Inhibit No connection Output Common Positive Output No connection Case Ground Input Common Positive Input Dual Output Inhibit Positive Output Output Common Negative Output No connection Case Ground Input Common Positive Input Squared corner and dot on top of cover indicate pin one. MODEL NUMBER KEY HR12 2 - 28 12 Base Model 1 2 3 4 5 Number of Outputs (1 = single, 2 = dual) Input Voltage BOTTOM VIEW HR120 Output Voltage 8 7 6 See Section B8, case E1, for dimensions FIGURE 1: PIN OUT B4-49 DC/DC CONVERTERS HR120 SERIES 12 WATT Typical Performance Curves: 25°C Tc , 28 VDC Vin, 100% load, unless otherwise specified. 90 90 90 16V 80 40V 70 28V 60 50 80 40V 70 28V 60 2 4 6 8 10 12 50 14 28V 2 6 4 10 8 12 50 14 2 4 6 8 10 12 Output Power (Watts) Output Power (Watts) Output Power (Watts) HR121-2805 Efficiency HR121-2812 Efficiency HR121-2815 Efficiency Negative Output Voltage Change (%) 90 19V 16V 80 80 Efficiency (%) 40V 70 28V 40V 70 28V 60 60 50 2 4 6 8 10 12 14 2 4 6 8 10 14 FIGURE 4 FIGURE 3 90 Efficiency (%) 40V 70 60 FIGURE 2 50 Efficiency (%) Efficiency (%) Efficiency (%) 19V 16V 80 12 Output Power (Watts) Output Power (Watts) HR122-2812 Efficiency HR122-2815 Efficiency 14 10 8 6 Cond. A 2812 4 2 2815 0 2 –4 2812 –6 Cond. B –8 –10 0 10 2 30 40 50 Output Load (%) Condition A: 50% Load Pos. Vout, 50% to 20% Neg. Vout Condition B: 50% Load Neg. Vout, 50% to 20% Pos. Vout HR122 Negative Output Voltage Cross Regulation FIGURE 6 19 15 18 10 17 5 0 2815 –5 2812 –10 –15 –20 19 18 2815 16 15 2812 14 13 2805 0 20 40 60 80 100 HR122 Negative Output Voltage Cross Regulation FIGURE 8 11 17 2815 16 15 14 13 2812 12 12 Output Load (%) Positive Output 20% to 80% Load Negative Output 80% to 20% Load B4-50 FIGURE 7 Input Voltage (Volts) 20 Input Voltage (Volts) Negative Output Voltage Change (%) FIGURE 5 11 2 4 6 8 10 12 14 2 4 6 8 10 12 14 Output Power (Watts) 50 mV Drop Output Power (Watts) 50 mV Drop HR121 Low Line Dropout HR122 Low Line Dropout FIGURE 9 21821-009-DTS Rev A DQ# 2011 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. HR120 Series is a trademark of Interpoint. Copyright © 1994 - 1999 Interpoint. All rights reserved. FIGURE 10 CASES CASE E Squared corner and dot on top of case indicate pin one. CASE E BOTTOM VIEW See Figures 16 – 18 for pin configurations. 1.130 max (28.70) Materials Header Cold Rolled Steel/Nickel/Gold Cover Kovar/Nickel (SMHF Series Cold Rolled Steel/Nickel/Gold) Pins #52 alloy/Gold compression glass seal Case dimensions in inches (mm) Tolerance ±0.005 (0.13) for three decimal places ±0.01 (0.3) for two decimal places unless otherwise specified 1.460 max (37.08) 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 15: CASE E MAXIMUM DIMENSIONS BOTTOM VIEW CASE E1 MHF+ Series Single and Dual: Screening – Standard, ES, or 883 MHF Series and LIM5050 Module: Screening – Standard or ES SMHF Series Single and Dual and SLIM5050 Module: Screening – Space Standard, H, or K HR120 Series: No screening options Seam Seal Projection Weld Squared corner and dot on top of case indicate pin one. 0.960 (24.38) 1 2 3 4 5 0.030 dia. (0.76) 0.205 (5.21) 0.000 0.25 (6.35) 0.000 0.330 max (8.38) 0.25 (6.35) 0.000 0.330 max (8.38) 7 6 0.505 (12.83) 0.705 (17.91) 0.905 (22.99) 1.105 (28.07) 8 0.160 (4.06) 0.000 FIGURE 16: CASE E1 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. B8-10 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