b4-51 f eatures ?0? to +85? operation 16 to 32 vdc input voltage fully isolated opto-coupler feedback switching frequency single and dual outputs typical 80 khz, variable freq. triple output 200 khz, fixed topology ?flyback inhibit function indefinite short circuit protection up to 75% efficiency requires external capacitors description the hr40 series dc/dc converters offer the high efficiencies associated with switching regulators, yet have full isolation of input and output grounds. the units are built using thick-film hybrid tech- nology and are sealed in metal packages for high-reliability applica- tions. all models are guaranteed to pass a gross leak test (maximum leak rate of 1 x 10 -3 atm-cc/sec). the hr40 series devices are flyback energy storage switching regulators which require a minimum of components resulting in small package size. single and dual models self-oscillate at an operating frequency which is an approximate inverse function of the load. at full load, the frequency is typically 80 khz for single and dual output models. triple output models operate at a fixed frequency of approximately 200 khz. a transformer in the forward power circuit and an opto-coupler in the feedback/control loop maintain input to output isolation. models are available with single 5 volt, dual 12 or 15 volt, or triple (+5 and either 12 or 15) outputs with an input voltage range of 16 to 32 vdc. output power of up to 4 watts is available from the dual output models for either balanced or unbalanced loads; however, at least 25% of the total load should be on the positive output. the single output device can provide 3.5 watts, and the triple output can supply up to 3.2 watts. the high efficiency is almost constant over the entire input voltage range and from approximately 25% of full load to full load. this makes the unit ideal for battery applications. an open collector ttl inhibit is provided to allow power shutdown and startup from a logic input. an open circuit on the inhibit terminal (pin 15) gives normal operation, and a ttl low level shuts down the converter. the inhibit pin has an open circuit voltage of 12 to 28 v. input current in the shutdown mode will be less than 15 ma. current limiting is provided on each output for indefinite short circuit protec- tion. due to the high efficiency, heat sinking requirements are minimized, but consideration should be given to removing self-generated heat when operating these devices at maximum ratings. to increase dissipation, heat conducting material (pcb, copper sheet, heat sink, etc.) should be brought into contact with the converter s baseplate. the converter can be operated at full load at a case temperature of 85?, with the output power derated linearly to zero at 105?. w arning :e xternal c apacitors r equired external capacitors are required on the outputs. operating the unit without external capacitors will result in damage to the internal circuitry. minimum recommended capacitor values are given in tables 1 and 2. for optimum performance, low esr (equivalent series resistance) solid tantalum capacitors are required. the specifications on the following pages are based on the use of high- quality solid tantalums. operation with different types of capacitors will seriously affect performance. dc/dc c onverters 28 v olt i nput hr40 series 4 watt size (max.): 1.075 x 1.075 x 0.370 inches (27.31 x 27.31 x 9.40 mm) see section b8, case c2, for dimensions. weight: 20 grams maximum screening: standard only. see section c2 for screening description. models vdc o utput single 5 dual ? 2 ? 5 triple +5 & 12 +5 & 15
single and dual output external capacitors o peration without external capacitors will result in damage to the internal circuitry . typical characteristics recommended operating conditions inhibit required minimum model connection capacitor value 1 single output positive output (12 & 13) to hr41-2805 output common (8 & 9) 220 f, 10 v positive output (10) to dual outputs 2 output common (8) 100 f, 25 v hr42-2812 external capacitor (14) to 100 f, 25 v and output common (8) 3 hr42-2815 negative output (12) to 10 f, 25 v output common (8) b4-52 hr40 series 4 watt dc/dc c onverters absolute maximum ratings single and dual output models hr41-2805 hr42-2812 hr42-2815 parameter 1 conditions min typ max min typ max min typ max units output voltage p out = 2 w 4.90 5.0 5.10 11.88 12 12.12 14.85 15 15.15 vdc output current 18 to 32 v in 700 167 133 ma output power 2 tc = ?0? to +85? 3.5 4.0 4.0 w output ripple bw = 1 mhz 75 150 75 150 75 150 mv p-p line regulation 18 - 32 v in , p out = 2 w 5 10 10 20 10 20 mv load regulation no load to full 25 50 12 24 12 24 mv input voltage tc = ?0? to +85? 16 28 32 16 28 32 16 28 32 vdc transient 50 ms 40 40 40 v input current no load 7 10 10 15 10 15 full load 192 213 213 ma inhibited 15 15 15 efficiency full load 68 72 70 75 70 75 % input voltage 16 to 32 vdc output power 3.2 to 4 watts depending on model lead soldering temperature (10 sec) 300? storage temperature range (case) ?0? to +125? output voltage temperature coefficient hr41-2805 100 ppm/? typ, 200 max. hr42-28xx 50 ppm/? typ. hr43-28xx 100 ppm/? typ. input to output capacitance 60 pf typical isolation 100 megohm minimum at 500 v conversion frequency single and dual output models, 80 khz at full load typical, variable frequency triple output models, 200 khz typical fixed frequency inhibit pin voltage (unit enabled) 12 to 28 v input voltage range 16 to 32 vdc continuous 40 v for 50 ms transient case operating temperature (tc) ?0? to +85? full power ?0? to +105? absolute derating output power/current linearly from 100% at 85? to 0% at 105? inhibit ttl open collector logic low (output disabled) 0.8 v referenced to input common logic high (output enabled) 3 12 v notes 1. external capacitors required to prevent damage to internal circuitry (see table 1 for specifications). 2. dual output models deliver up to 4 watts total for balanced or unbalanced loads, however, the positive output should carry at least 25% of the total load. feedback logic timing control switch 10 positive output 8 12 1, 2 positive input 15 inhibit 17, 18 input common 14 negative output output common external capacitor terminal 100 f 10 f 100 f + + + external capacitors voltage regulator f igure 1: d ual o utput e xternal c apacitor c onnections table 1 notes 1. capacitors should be high quality, low esr components ? solid tantalum is recommended. 2. see figure 1 for connection diagram 3. place positive side of capacitor toward pin 8. t able 1: e xternal c apacitor r equirements electrical characteristics: 25? tc, 28 vdc vin, 100% load, unless otherwise specified. w arning :e xternal c apacitors r equired
triple output external capacitor o peration without external capacitors will result in damage to the internal circuitry . b4-53 hr40 series 4 watt dc/dc c onverters notes 1. external capacitors required to prevent damage to internal circuitry (see table 2 for specifications). 2. minimum load required on main output for full power auxiliary oper- ation. feedback logic timing control switch ref. & comp dual tracking regulator 9 +5 output 6, 7 8 positive auxiliary output 5 negative auxiliary output output common 1, 2 positive input 15 inhibit 17, 18 input common 220 f external capacitor required minimum model connection 1 capacitor value2 HR43-2812 positive 5 vdc output (9) to and output common (6 or 7) 220 f, 10 v hr43-2815 f igure 2: t riple o utput e xternal c apacitor c onnections table 2 notes 1. see figure 2 for connection diagram. 2. capacitors should be high quality, low esr components ? solid tantalum is recommended. t able 2: e xternal c apacitor r equirements triple output models HR43-2812 hr43-2815 parameter 1 conditions min typ max min typ max units output voltage p out = 2 w main 4.9 5.0 5.1 4.9 5.0 5.1 vdc balanced load aux 11.5 12.0 12.5 14.5 15.0 15.5 output current 2 18 to 32 v in main 10.0 400 10.0 400 ma aux 50.0 40.0 output power tc = ?0? to +85? 3.2 3.2 w output ripple bw dc to 1 mhz main 50 100 50 100 mv p-p aux 50 100 50 100 line regulation p out = 2 w main 5 10 5 10 mv 18 to 32 v in aux 3 6 3 7.5 load regulation no load to full main 15 30 15 30 mv aux 15 30 12 24 input voltage tc = ?0? to +85? 16 28 32 16 28 32 vdc transient 50 ms 40 40 v no load 10 20 10 20 input current full load 176 176 ma inhibited 15 15 efficiency full load 68 70 68 70 % electrical characteristics: 25? tc, 28 vdc vin, 100% load, unless otherwise specified. w arning :e xternal c apacitors r equired
pin out pin single output dual output triple output 1, 2 1 positive input positive input positive input 3 no connection no connection no connection 4 case case case 5 no connection no connection negative aux. output 6 no connection no connection output common main 2 7 no connection no connection output common aux. 2 8 output common 3 output common positive aux. output 9 output common 3 no connection +5 vdc output 10 no connection positive output no connection 11 no connection no connection no connection 12 positive output 3 negative output no connection 13 positive output 3 no connection no connection 14 no connection ext. capacitor no connection 15 inhibit inhibit inhibit 16 no connection no connection no connection 17, 18 1 input common input common input common hr4 3 - 28 12 base model input voltage output voltage number of outputs (1 = single, 2 = dual, 3 = triple) (auxiliary output on triple output models) b4-54 hr40 series 4 watt dc/dc c onverters model numbering key pin out notes 1. make external connection to both pins on all models. pins 1 and 2 positive input pins 17 and 18 input common 2. pins 6 and 7 on triple output models are connected internally. 3. on the hr41-2805: make external connections to both output common pins (8 and 9). make external connections to both positive output pins (12 and 13). dot on top of cover indicates pin one. bottom view hr40 12 9 10 17 18 see section b8. case c2, for dimensions f igure 3: p in o ut w arning :e xternal c apacitors r equired o peration without external capacitors will result in damage to the internal circuitry . 24021-009-dts rev a dq# 2012 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. hr40 series is a trademark of interpoint. copyright 1994 - 1999 interpoint. all rights reserved.
b8-8 case c c ases case c bottom view see figures 9 - 11 for pin configurations. 1.075 max (27.31) materials header case c1 cold rolled steel/nickel/gold cases c2 and c3 kovar/nickel/tin cover case c1 cold rolled steel/nickel cases c2 and c3 kovar/nickel/tin pins case c1 copper/nickel/gold cases c2 and c3 kovar/nickel/gold, matched 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 1.075 max (27.31) 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. dot on top of case indicates pin one 0.000 0.132 (3.35) 0.932 (23.67) 0.000 0.132 (3.35) 876 5 4 3 2 1 0.332 (8.43) 0.532 (13.51) 0.732 (18.59) 0.932 (23.67) 0.025 (0.64) dia. 0.000 0.270 max. (6.86) msa series: screening ?standard, es, or 883 smsa series: screening ?space standard, h, or k bottom view case c1 0.205 0.010 (5.21 0.25) 0.000 0.270 max. (6.86) 0.205 0.010 (5.21 0.25) projection weld seam seal squared corner and dot on top of case indicate pin one. 12 9 10 17 18 0.018 0.002 dia. (0.46 0.05) 0.350 (8.89) 0.000 pins equally spaced marker bead on pin 18 msr series: screening ?standard or es hr40 series: no screening options bottom view case c2 0.205 0.010 (5.21 0.25) dot on top of case indicates pin one 0.100 (2.54) 0.370 max. (9.40) 0.800 (20.32) 0.800 (20.32 12 4 5 9 0.018 0.002 dia. (0.46 0.05) 6 7 msf emi filter: screening ?standard or es 8 bottom view case c3 0.350 (8.89) 0.000 0.370 max. (9.40) 0.205 0.010 (5.21 0.25) dot on top of case indicates pin one 0.100 (2.54) 0.800 (20.32) 0.800 (20.32 0.600 (15.24) 0.300 (7.62) 3 0.000 0.365 max. (9.27) 0.205 0.010 (5.21 0.25) seam seal f igure 9: c ase c1 f igure 10: c ase c2 f igure 11: c ase c3 f igure 8: c ase c m aximum d imensions 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 dimen- sions for accuracy.
c2-13 qa screening hr products hr p roducts test (hr products) standard pre-cap inspection method 2017 yes final electrical test mil-prf-38534, group a subgroups 1 and 4: +25? case yes hermeticity testing gross leak, dip (1 x 10 -3 ) yes final visual inspection method 2009 yes test methods are referenced to mil-std-883 as determined by mil- prf-38534. hr700 series hr300 series hr150 series hr120 series hr40 series applies to the following products:
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