Crane Aerospace & Electronics Power Solutions MCH/MGH Single and Dual DC-DC Converters 28 Volt input – 1.5 Watt Features Small footprint, 0.79 in2 (5.1 cm2) - MCH Surface mount package - MGH • Operating temperature -55°C to +125°C • Input voltage 12 to 50 VDC • Transient protection 80 V for up to 120 ms -- 70 V for 15 V single and dual models • Fully isolated, magnetic feedback • Fixed frequency switching models • Inhibit function VDC Output • Short circuit protection SINGLE • Undervoltage lockout • Up to 79% efficiency DESCRIPTION The Interpoint™ MCH Series™ and MGH Series™ of dc-dc converters deliver 1.5 watts of output power while saving significant board real estate. The wide input voltage range of 12 to 50 VDC accepts the varying voltages of military, aerospace, or space bus power and tightly regulates output voltages to protect downstream components. Transient protection of 80 volts for up to 120 milliseconds exceeds the requirements of MIL-STD-704A for the 5 and 12 volt single models and the 12 volt dual model. The 15 volt single and dual converters will withstand transients of up to 70 volts for up to 120 milliseconds. The converters are offered with standard screening, “ES” screening, or fully compliant to “883” MIL-PRF-38534 Class H screening. See “Table 11: Element Evaluation” on page 12 and “Table 12: Environmental Screening” on page 13. Standard microcircuit drawings (SMD) are available. See “Table 5: MCH SMD Numbers” on page 4 and “Table 6: MGH SMD Numbers” on page 4. Converter Design MCH Series and MGH Series of dc-dc converters incorporate a continuous flyback topology with a constant switching frequency of approximately 370 kHz. Current-mode pulse width modulation (PWM) provides output voltage regulation. Output error voltage is magnetically fed back to the input side of the PWM to regulate output voltage. Regulation is also affected by the load; refer to the Electrical Characteristics Table 9 on page 6 and Table 10 on page 7. DUAL 5 ±5 12 ±12 15 ±15 Dual models regulate the negative output with magnetic coupling to the positive output. Up to 80% of the total load may be on one output providing that the other output carries a minimum of 20% of the total load. The dual models can be used at double the output voltage by connecting the load between positive and negative outputs, leaving the common unconnected. (ex: MCH2805D can be used as a 10 VDC output.) Inhibit Function MCH and MGH converters provide an inhibit terminal that can be used to disable internal switching, resulting in no output voltage and an input current as low as 2.3 mA. The converter is inhibited when the inhibit pin is pulled below 0.8 V and enabled when its inhibit pin is left floating. An external inhibit interface should be capable of pulling the converter’s inhibit pin below 0.8 V while sinking the maximum inhibit current and also allowing the inhibit pin to float high to enable the converter. A voltage should not be applied to the inhibit pin. The open circuit voltage present on the inhibit pin is 7 to 12 V. Protection Features Undervoltage lockout prevents the converters from operating below approximately 8 VDC input voltage to keep system current levels smooth, especially during initialization or re-start operations. All models include a soft-start function to prevent large current draw and minimize overshoot. The converters also provide short circuit protection by restricting the current. MIL-STD-461 Use the Interpoint FMSA-461 (down-leaded) or FMGA-461 (surface mount, side-leaded) EMI filters to pass the CE03 requirements of MIL-STD-461C. Crane Aerospace & Electronics Power Solutions – Interpoint Products 10301 Willows Rd. NE, Redmond, WA 98052 +1.425.882.3100 • [email protected] www.craneae.com/interpoint Page 1 of 13 MCH_MGH Rev AB - 2013.05.31 Crane Aerospace & Electronics Power Solutions MCH/MGH Single and Dual DC-DC Converters 28 Volt input – 1.5 Watt Packaging MCH - Down-leaded package The MCH Series converters are packaged in hermetically sealed, projection-welded metal cases which provide EMI/RFI shielding. See “Figure 21: MCH Case Dimensions” on page 10. MGH - Surface mount package The surface mount MGH dc-dc converters can be mounted with pick-and-place equipment or manually. It is recommended that the case be attached with flexible epoxy adhesive or silicone which is thermally conductive (>1 watt /meter/°K). Internal components are soldered with SN96 (melting temperature 221°C) to prevent damage during reflow. Maximum reflow temperature for surface mounting the MGH converter is 220°C for a maximum of 30 seconds. SN60, 62, or 63 are the recommended types of solder. Hand soldering should not exceed 300°C for 10 seconds per pin. The hermetically sealed metal cases are available in two different lead configurations. See “Figure 22: MGH Case Dimensions” on page 11 and “Figure 23: MGH Gull-Wing Solder Pad Layout” on page 11. Positive Input + +Vin Inhibit Shutdown FB PWM Controller +Vout Input Common Case Ground Dual models only Figure 1: MCH/MGH Block Diagram www.interpoint.com Page 2 of 13 MCH_MGH Rev AB - 2013.05.31 + Positive Output + Output Common Negative Output Crane Aerospace & Electronics Power Solutions MCH/MGH Single and Dual DC-DC Converters 28 Volt input – 1.5 Watt Pin Pin Out MCH Models Single Output Dual Output Pin 1 Positive Input Positive Input 2 Input Common Input Common 3 Positive Output 4 5 Pin Out MGH Models Single Output Dual Output 1 Positive Input Positive Input 2 No Connection No Connection Positive Output 3 Input Common Input Common Output Common Output Common 4, 5 Positive Output Positive Output Case Ground Case Ground 6, 7 Case Ground 6 No Connection Negative Output 8, 9 Output Common Output Common 7 Inhibit Inhibit 10, 11 Case Ground Case Ground 12 No Connection No Connection 13, 14 No Connection Negative Output 15, 16, 17 No Connection No Connection 18 Inhibit Inhibit Table 1: MCH Pin Out Case Ground To meet specified performance for the MGH, all pins must be connected except “No connection” pins and Inhibit pin. Table 2: MGH Pin Out Squared corner and dot on 1 2 3 4 5 6 7 8 9 top of cover indicate pin one. 1 2 3 bottom view MCH 7 6 4 5 TOP VIEW MGH 18 17 16 15 14 13 12 11 10 Differently colored glass bead around pin one or dimple in header (bottom or side of case) indicates pin one. Cover marking is oriented with pin one at the upper right corner. See case A2 for dimensions. Figure 2: MCH Pin Out See case B for dimensions and “gull-wing” option. Figure 3: MGH Pin Out Inhibit MCH Pins not in Use “No Connection” pin MGH Pins not in Use Leave unconnected Inhibit Leave unconnected “No Connection” pins Table 3: MCH Pins not in Use Leave unconnected Connect to case ground for best EMI performance. Also ok to leave unconnected. Table 4: MGH Pins not in Use www.interpoint.com Page 3 of 13 MCH_MGH Rev AB - 2013.05.31 Crane Aerospace & Electronics Power Solutions MCH/MGH Single and Dual DC-DC Converters 28 Volt input – 1.5 Watt SMD Numbers Standard Microcircuit Drawing (SMD) SMD Numbers MCH Similar Part Standard Microcircuit Drawing (SMD) MGH Similar Part 5962-9569601hxc MCH2805S/883 5962-9569601hzc MGH2805SZ/883 5962-9569701HXC MCH2812S/883 5962-9569701Hzc MGH2812SZ/883 5962-9569801HXC MCH2815S/883 5962-9569801Hzc MGH2815SZ/883 5962-9570201HXC mCH2805d/883 5962-9570201Hzc MGH2805DZ/883 5962-9570301hxc MCH2812D/883 5962-9570301hzc MGH2812DZ/883 5962-9570401hxc MCH2815D/883 5962-9570401hzc MGH2815DZ/883 For exact specifications for an SMD product, refer to the SMD drawing. SMDs can be downloaded from: http://www.dscc.dla.mil/programs/smcr For exact specifications for an SMD product, refer to the SMD drawing. SMD numbers are shown for the surface mount gull-wing case. For the straightlead case, replace the Z (HZC)in the SMD with a Y (HYC). SMDs can be downloaded from: http://www. dscc.dla.mil/programs/smcr Table 5: MCH SMD Numbers Table 6: MGH SMD Numbers model numbering key Base Model Input Voltage MCH model numbering key 28 12 D / 883 Base Model Input Voltage Output Voltage (R = decimal point, 3R3 = 3.3 Vout) MGH 28 12 S Z / ES Output Voltage Number of Outputs (S = single, D = dual) Number of Outputs (S = single, D = dual) Gull Wing Lead Option (Straight leaded case has no designator in this position.) Screening (Standard screening has no designator in this position.) Screening (Standard screening has no designator in this position.) Figure 4: MCH Model Numbering Key Figure 5: MGH Model Numbering Key To Category model Number Options determine the model number enter one option from each category in the form below. Base Model and Input Voltage Output Voltage Options MCH 05, 12, 15 MGH 05, 12, 15 Fill in for Model # __________ M H __________ Case Options 2 Screening 3 S MCH – down-leaded: leave blank (standard, leave blank) D MGH – straight leads: leave blank ES MGH – gull wings: Z 883 Number of Outputs 1 / Notes: 1. Number of Outputs: S is a single output and D is a dual output 2. Case Options: For the standard case MCH down-leaded case leave the case option blank. For the MGH straight-lead case, leave the case option blank. For the MGH, surface mount gull-wing case, insert the letter “Z” in the case option position. 3. Screening: For standard screening leave the screening option blank. For other screening options, insert the desired screening level. For more information see “Table 11: Element Evaluation” on page 12 and “Table 12: Environmental Screening” on page 13. www.interpoint.com Table 7: MCH/MGH SMD Model Number Options Page 4 of 13 MCH_MGH Rev AB - 2013.05.31 Crane Aerospace & Electronics Power Solutions MCH/MGH Single and Dual DC-DC Converters 28 Volt input – 1.5 Watt Table 8: Operating Conditions, All Models : 25°C TC, 28 VDC VIN, 100% load, unless otherwise specified. All Models PARAMETER CONDITIONS LEAD SOLDERING TEMPERATURE 1 Surface Mount Solder Reflow 1, 2 10 seconds max. MIN — SN 60, 62 or 63 Recommended STORAGE TEMPERATURE 1 MAX UNITS — 300 °C 220°C for max. of 30 seconds -65 CASE OPERATING TYP — +150 °C FULL POWER ABSOLUTE 1 -55 — +125 TEMPERATURE -55 — +135 DERATING OUTPUT POWER/CURRENT 1 LINEARLY From 100% at 125°C to 0% at 135°C ISOLATION, ANY PIN TO CASE Except case pin @ 500 VDC at 25°C INPUT TO OUTPUT CAPACITANCE 1 UNDERVOLTAGE LOCKOUT CURRENT LIMIT 1, 3 AUDIO REJECTION 1 % OF FULL LOAD 1 CONVERSION FREQUENCY FREE RUN -55° TO +125°C °C 100 — — Megohms — 100 - 170 — pF VIN — 8 — — 125 — — 40 — dB 270 370 470 kHz % INHIBIT ACTIVE LOW (OUTPUT DISABLED) inhibit pin pulled low — — 0.8 VDC Do not apply a voltage to the inhibit pin. 4 INHIBIT PIN SOURCE CURRENT 1 — — 1 mA INHIBIT ACTIVE HIGH (OUTPUT ENABLED) Do not apply a voltage to the inhibit pin. 4 INHIBIT PIN CONDITION REFERENCED TO OPEN PIN VOLTAGE 1 INPUT COMMON 7 OPEN COLLECTOR OR UNCONNECTED — 12 V Notes: 1. Guaranteed by qualification test and/or analysis. Not an in-line test. 2. See “Figure 23: MGH Gull-Wing Solder Pad Layout” on page 11 for more information 3. Dual outputs: The over-current limit will trigger when the sum of the currents from both outputs reaches 125% (typical value) of the maximum rated “total” current of both outputs. 4. An external inhibit interface should be used to pull the inhibit low or leave it floating. The inhibit pin can be left unconnected if not used. www.interpoint.com Page 5 of 13 MCH_MGH Rev AB - 2013.05.31 Crane Aerospace & Electronics Power Solutions MCH/MGH Single and Dual DC-DC Converters 28 Volt input – 1.5 Watt Table 9: Electrical Characteristics: -55°C to +125°C TC, 28 VDC Vin, 100% load, free run, unless otherwise specified. MCH/MGH single output models PARAMETER CONDITIONS OUTPUT VOLTAGE 2 OUTPUT CURRENT Vin = 12 to 50 VDC OUTPUT POWER Vin = 12 to 50 VDC OUTPUT RIPPLE TC = 25°C MCH2805S MCH2812S MCH2815S MGH2805S MGH2812S MGH2815S MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS 4.80 5.00 5.20 11.52 12.00 12.48 14.40 15.00 15.60 VDC 0 — 300 0 — 125 0 — 100 mA 0 — 1.5 0 — 1.5 0 — 1.5 W — 45 150 — 50 200 — 35 150 TC = -55°C TO +125°C — 65 300 — 70 300 — 50 250 — 40 120 — 70 250 — 80 350 mV LOAD REGULATION 3 10% LOAD TO FULL — 380 800 — 640 1400 — 760 1600 mV INPUT VOLTAGE CONTINUOUS 12 28 50 12 28 50 12 28 50 VDC V 10 kHz - 2 MHz LINE REGULATION VIN = 12 to 50 VDC 1 mV p-p NO LOAD TO FULL TRANSIENT 120 msec. — — 80 — — 80 — — 70 INPUT CURRENT NO LOAD — 6.0 11 — 6.5 12 — 6.5 12 INHIBITED — 2.4 3.5 — 2.4 3.5 — 2.4 3.5 10 kHz - 10 MHz — 130 250 — 150 250 — 150 250 TC = 25°C 72 77 — 74 79 — 74 79 — 69 75 — 72 77 — 72 77 — POWER DISSIPATION RECOVERY 1 — 1.4 2.3 — 2.2 3.5 — 2.5 4.0 W SHORT CIRCUIT — 3.5 15 — 3.5 20 — 4.0 20 ms STEP LOAD RESPONSE 7 TRANSIENT — ±185 ±500 — ±380 ±800 — ±380 ±800 mV pk 50% - 100% - 50% RECOVERY — 125 600 — 130 600 — 180 750 µs INPUT RIPPLE CURRENT 4 EFFICIENCY TC = -55°C TO +125°C LOAD FAULT 5, 6 STEP LINE RESPONSE 1, 7 mA mA p-p % TRANSIENT — 180 ±500 — ±400 ±1000 — ±450 ±850 mV pk 12 - 50 - 12 VDC RECOVERY — 0.75 4.0 — 0.6 3.0 — 0.5 2.5 ms START-UP DELAY OVERSHOOT 1 — 10 40 — 10 40 — 10 40 ms — 0 150 — 0 350 — 0 450 mV pk — — 200 — — 200 — — 200 µF 0 - 28 VIN, Full lOad CAPACITIVE LOAD 1 TC = 25°C NO EFFECT ON DC PERFORMANCE Notes: 1. Guaranteed by qualification test and/or analysis. Not an in-line test. 2. Specified at 50% total Pout. 3. Although no minimum load is required, at no load the output voltage may increase up to 15%. 4. An external 2 µH inductor, added in series to the input, is necessary to maintain specifications. www.interpoint.com 5. Maximum duration of short circuit: 25°C – 90 seconds, 125°C – 30 seconds. 6. Load fault is a short circuit (<50 mohms). Recovery is into resistive full load. 7. Transition ≥ 10 µs. Recovery = time to settle to within 1% of Vout final value. Page 6 of 13 MCH_MGH Rev AB - 2013.05.31 Crane Aerospace & Electronics Power Solutions MCH/MGH Single and Dual DC-DC Converters 28 Volt input – 1.5 Watt Table 10: Electrical Characteristics: -55°C to +125°C TC, 28 VDC Vin, 100% load, free run, unless otherwise specified. MCH/MGH Dual output models PARAMETER OUTPUT VOLTAGE 2 OUTPUT CURRENT 3 Vin = 12 to 50 VDC MCH2805D MCH2812D MCH2815D MGH2805D MGH2812D MGH2815D CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS ±VOUT 4.80 5.00 5.20 11.52 12.00 12.48 14.40 15.00 15.60 VDC EACH OUTPUT 0 ±150 240 0 ±62.5 100 0 ±50 80 TOTAL OUTPUT — — 300 — — 125 — — 100 OUTPUT POWER 3 EACH OUTPUT 0 ±0.75 1.2 0 ±0.75 1.2 0 ±0.75 1.2 Vin = 12 to 50 VDC TOTAL OUTPUT — — 1.5 — — 1.5 — — 1.5 OUTPUT RIPPLE 10 kHz - 2 MHz ± VOUT LINE REGULATION ±VOUT 4 LOAD REGULATION ±VOUT Cross REgulation 5 INPUT VOLTAGE NO LOAD TO FULL TC = 25°C — 35 150 — 35 150 — 30 150 — 50 250 — 40 250 — 35 250 VIN = 12 to 50 V — 20 100 — 110 400 — 180 650 mV 10% LOAD TO FULL — 350 700 — 570 1200 — 630 1400 mV -VOUT — — 400 — — 500 — — 500 mV 12 28 50 12 28 50 12 28 50 VDC — — 80 — — 80 — — 70 V 1 TRANSIENT 120 msec. NO LOAD — 6.0 12 — 8.0 14 — 8.0 14 INHIBITED — 2.4 3.5 — 2.4 3.5 — 2.4 3.5 INPUT RIPPLE CURRENT 6 10 kHz - 10 MHz — 130 250 — 150 250 — 150 250 EFFICIENCY TC = 25°C 73 77 — 73 77 — 72 76 — 70 75 — 70 75 — 69 74 — — 1.6 2.5 — 2.7 4.2 — 3.0 4.5 TC = -55°C TO +125°C LOAD FAULT 7, 8 W TC = -55°C TO +125°C CONTINUOUS INPUT CURRENT mA POWER DISSIPATION 1 mV p-p mA mA p-p % W SHORT CIRCUIT RECOVERY — 3.8 20 — 3.2 20 — 4.0 20 ms STEP LOAD RESPONSE 9 TRANSIENT — ±140 ±400 — ±260 ±700 — ±270 ±700 mV pk 50% - 100% - 50% RECOVERY — 100 500 — 165 800 — 50 300 µs STEP LINE RESPONSE 1, 9 TRANSIENT — ±130 ±300 — ±250 ±600 — ±230 ±600 mV pk 12 - 50 - 12 VDC RECOVERY — 0.6 3.0 — 0.9 4.0 — 0.7 4.0 ms START-UP DELAY — 10 45 — 10 45 — 10 45 ms 0 to 28 VIN, full Load OVERSHOOT 1 — 0 150 — 0 350 — 0 900 mV pk NO EFFECT ON DC PERFORMANCE — — 100 — — 100 — — 100 µF CAPACITIVE LOAD TC = 25°C 1 Notes: 1. Guaranteed by qualification test and/or analysis. Not an in-line test. 2. Specified at 50% total POUT with balanced loads. 3. Up to 80% of the total output current/power is available from either output providing the opposite output carries a minimum of 20% total load. 4. Although no minimum load is required, at no load the output voltage may increase up to 15%. 5. Cross regulation is specified as the effect on –Vout for the following percentages of total output power: +Po = 20% and –Po = 80% to +Po=80% and –Po=20% www.interpoint.com 6. An external 2 µH inductor, added in series to the input, is necessary to maintain specifications. 7. Maximum duration of short circuit: 25°C – 90 seconds, 125°C – 30 seconds. 8. Load fault is a short circuit (<50 mohms). Recovery is into resistive full load. 9. Transition ≥ 10 µs. Recovery = time to settle to within 1% of Vout final value. Page 7 of 13 MCH_MGH Rev AB - 2013.05.31 Crane Aerospace & Electronics Power Solutions MCH/MGH Single and Dual DC-DC Converters 28 Volt input – 1.5 Watt Typical Performance Curves: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified. MCH and MGH Single and Dual output models 90 90 80 12 VOLT 70 28 VOLT 60 50 VOLT 50 60 50 VOLT 0.75 30 1 1.25 1.5 1.75 ALL 5 VOLT MODELS EFFICIENCY vs LOAD 28 VOLT 50 VOLT 60 50 40 0.25 0.5 0 OUTPUT POWER 12 VOLT 70 50 40 30 28 VOLT EFFICIENCY EFFICIENCY 70 80 12 VOLT EFFICIENCY 80 90 40 0.25 0.5 0 OUTPUT POWER 30 1 1.25 1.5 1.75 0.75 12 & 15 VOLT SINGLE MODELS 1 1.25 1.5 1.75 0.75 12 & 15 VOLT DUAL MODELS EFFICIENCY vs LOAD EFFICIENCY vs LOAD Figure 6 0.25 0.5 0 OUTPUT POWER Figure 7 Figure 8 0 20 V / div. VIN 80 100 10 60 FREQUENCY (kHz) MCH/MGH2815S - Representative of all models 1 FULL LOAD TO HALF LOAD 100 mV / div. 12 VDC 40 60 50 VDC 100 mV / div. ATTENUATION (dB) 20 VOUT HALF LOAD TO FULL LOAD 200µs / div. 500µs / div. MCH/MGH2805S MCH/MGH2805S LOAD TRANSIENT RESPONSE LINE TRANSIENT RESPONSE AUDIO REJECTION VOUT 6 0 2 4 8 10 12 14 16 18 TIME (ms) MCH/MGH2805S Representative of all 5 volt models VIN Figure 11 +VOUT FULL LOAD TO HALF LOAD –VOUT HALF LOAD TO FULL LOAD 50 VDC 12 VDC 200 mV / div. 20 V / div. VIN Figure 10 200 mV / div. 2V/div. 20V/div. Figure 9 +VOUT –VOUT FULL LOAD TO HALF LOAD +VOUT HALF LOAD TO FULL LOAD –VOUT 200µs / div. MCH/MGH2815D LINE TRANSIENT RESPONSE 500µs / div. MCH/MGH2815D LOAD TRANSIENT RESPONSE TURN-ON INTO FULL LOAD Figure 12 www.interpoint.com Figure 13 Page 8 of 13 MCH_MGH Rev AB - 2013.05.31 Figure 14 Crane Aerospace & Electronics Power Solutions MCH/MGH Single and Dual DC-DC Converters 28 Volt input – 1.5 Watt Typical Performance Curves: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified. MCH and MGH Single and Dual output models (cont.) 4 4 (A) 0 5 10 15 20 TIME (ms) (A) 0 V for +VOUT 30 35 40 45 MCH/MGH2815D (B) 0 V for –VOUT 2 ±VOUT VOLTAGE CHANGE (%) +VOUT –VOUT 5V/div. ±VOUT VOLTAGE CHANGE (%) 20V/div. (B) –5 V 5V VIN 12 V 15 V 0 -2 25 2 0 -2 –15 V –12 V +15 V +12 V +5 V -4 90/10 70/30 50/50 30/70 10/90 OUTPUT LOAD (%) DUAL ISOLATED 90% TO 10% LOAD ON +V 10% TO 90% LOAD ON –V -4 10 20 40 50 30 OUTPUT LOAD (%) DUAL ISOLATED 50% LOAD +V; 50% TO 10% LOAD –V AND 50% LOAD –V; 50% TO 10% LOAD +V Also representative of MCH/MGH2812S & D and MCH/MGH2815S TURN-ON INTO FULL LOAD CROSS REGULATION CROSS REGULATION Figure 15 1.0 0.8 100 15 V SINGLE & DUAL EMISSION LEVEL (dB µA) 1.2 90 TRIP POINT 125% 80 Vout NOMINAL % MAXIMUM POWER (W) 1.4 Figure 17 120 1.8 1.6 Figure 16 12 V SINGLE & DUAL 60 SAFE OPERATING AREA 40 5V DUAL 20 5V SINGLE 0 9 10 INPUT VOLTAGE 11 12 ALL MODELS 0 20 40 60 80 100 % OF FULL LOAD 120 140 160 OUTPUT VOLTAGE vs. OUTPUT LOAD www.interpoint.com NARROWBAND CE 03 50 LI M IT 30 10 .015 0.1 1 10 FREQUENCY (MHz) Representative of all MCH/MGH models FILTERED WITH FMSA LOW LINE DROPOUT Figure 18 70 Figure 19 Page 9 of 13 MCH_MGH Rev AB - 2013.05.31 Figure 20 50 Crane Aerospace & Electronics Power Solutions MCH/MGH Single and Dual DC-DC Converter Cases 28 Volt input – 1.5 Watt BOTTOM VIEW CASE A2 Projection Weld Squared corner and dot on top of case indicate pin one. 4 6 0.435�(11.05) 0.535 (13.59) 0.000 0.27 ±0.02 (6.9 ±0.5) 0.000 0.135 (3.43) 0.235 (5.97) 7 0.097 (2.46) 0.000 0.270 max (6.98) 3 5 0.835 (21.21) 1 2 0.018 ± 0.002 dia. (0.46 ± 0.05) Weight 12 grams typical 0.980 max. (24.89) 0.805 max. (20.45) 0.697 (17.70) 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 CAUTION Solder pins individually with heat application not exceeding 300°C for 10 seconds per pin. Materials Header Kovar/Nickel/Gold Cover Kovar/Nickel Pins Kovar/Nickel/Gold matched glass seal Gold plating of 50 - 225 microinches included in pin diameter Seal hole: 0.056 ±0.002 (1.42 ±0.05) Case A2, Rev G, 2013.04.15 Please refer to the numerical dimensions for accuracy. Figure 21: MCH Case Dimensions Down-Leaded Case www.interpoint.com Page 10 of 13 MCH_MGH Rev AB - 2013.05.31 Crane Aerospace & Electronics Power Solutions MCH/MGH Single and Dual DC-DC Converter Cases 28 Volt input – 1.5 Watt CASE B1 GULL-WING SOLDER PADS TOP VIEW CASE B 1 2 3 4 5 6 7 8 9 0.830 (21.08) 0.015 (0.38) 0.100 (2.54) 16X 0.085 (2.16) 4X The triangle (ESD) marking on the cover indicates pin one. Cover marking is oriented with pin one at the upper right corner. The straight lead configuration does not require a “case designator” in the model number. ex. MGH2805S 0.010 (0.25) 1.870 ref. (47.50) 0.08 (2.0) 0.250 max. (6.35) Straight Leads 0.50 (12.7) Seam seal 1.140 ref. (28.96) 0.135 ref. (3.43) 1 0.010 (0.25) The gull wing option (configuration) requires “Z” as a “case designator” in the model number. ex. MGH2805Z Gull Wing Leads Option 1 Gull wing leads are solder dipped. Lead dimensions are prior to solder dip. 0.010 (0.25) Bottom of case to bottom of lead 0.070 (1.78) 0.030 (0.76) 18X 1.010 max (25.65) 0.000 0.000 0.070 (1.78) 18 17 16 15 (This view shows 14 straight leads.) 13 12 11 10 ∇ 0.900 (22.86) 0.800 (20.32) 0.700 (17.78) 0.600 (15.24) 0.500 (12.70) 0.400 (10.16) 0.300 ( 7.62) 0.200 ( 5.08) 0.100 ( 2.54) 0.090 (2.29) 0.880 max (22.35) 0.055 (1.40) (Center to center) 0.08 (2.0) Weight 12 grams maximum 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. Please refer to the numerical dimensions for accuracy. CAUTION Maximum reflow temperature is 220°C for a maximum of 30 seconds. SN60, SN62, or SN63 are the recommended types of solder. See MGH gull-wing solder pad layout. Hand soldering should not exceed 300°C for 10 seconds per pin. Materials Header Kovar/Nickel/Gold Cover Kovar/Nickel Pins Kovar/Nickel/Gold matched glass seal Gold plating of 50 - 150 microinches is included in pin diameter Seal hole: 0.040 ±0.002 (1.02 ±0.05) Dimensions in inches (mm) Tolerance ±0.005 (0.13) for three decimal places ±0.01 (0.3) for two decimal places, unless otherwise specified. Please refer to the numerical dimensions for accuracy. CAUTION: Internal components are soldered with SN96 (melting temperature 221°C) to prevent damage during reflow. Maximum reflow temperature for surface mounting the MGH converter is 220°C for a maximum of 30 seconds. SN60, 62, or 63 are the recommended types of solder. Hand soldering should not exceed 300°C for 10 seconds per pin. SOLDER MASK NOTES 1. Pad dimensions are for the solder mask. Leads common to each other can be connected to each other as desired. 2. Ground (case) pins should be connected to the center pad for improved grounding. 3. Connect "no connection" pins to case ground to reduce EMI. 4. Center pad should not have a solder mask. 5. Adhesive attach is intended to be a surface for soldering the hybrid to the circuit board. 6. Pre-tin base of converter prior to soldering. 7. If less rotation of case is desired, reduce the width of the large case pad by 0.020 inches (0.51 mm). Pad length can be extended 0.010 inches (0.25 mm) towards the case body and an as-desired dimension away from the case body. 8. Do not exceed 220°C as measured on the body of the converter (top or bottom). 9. Attach the body of the case to the board with a thermally conductive adhesive or SN60, 62, or 63 solder. The adhesive can be electrically conductive as well. It can be applied as an underfill post solder or dispensed and cured prior or during solder. 10. In the presence of vibration, to ensure reliable mechanical attachment, the body of the case should be attached with adhesive or solder as noted above (note 7). The leads alone do not provide sufficient mechanical attachment. Case B1 MGH Solder Pads, Rev F, 2013.05.31 Case B, Rev D, 2013.04.15 Figure 22: MGH Case Dimensions www.interpoint.com Figure 23: MGH Gull-Wing Solder Pad Layout Surface Mount Case and Lead Options Page 11 of 13 MCH_MGH Rev AB - 2013.05.31 Crane Aerospace & Electronics Power Solutions MCH/MGH Single and Dual Converters Quality assurance andDC-DC Certification 28 Volt input – 1.5 Watt aPPlICatION NOte StanDarD anD /eS (nOn-QMl) anD /883 (ClaSS H, QMl) Mil-prf-38534 eleMent eValuatiOn COMpOnent-leVel teSt perfOrMeD nOn-QMl 1 QMl StanDarD anD /eS ClaSS H /883 M/S 2 M/S 2 p3 n n n Visual n n Internal Visual n Final Electrical n n Wire Bond Evaluation n n Element Electrical Notes: 1. Standard and /ES non-QML products may not meet all of the requirements of MIL-PRF-38534. 2. M/S = Active components (Microcircuit and Semiconductor Die) 3. P = Passive components, Class H element evaluation. Not applicable to Standard and /ES element evaluation. tabLe 5: eLeMent evaLuation–high reLiabiLity stanDarD, /es anD /883 (CLass h) Table 11: Element Evaluation www.interpoint.com www.craneae.com/interpoint Page 13 Page 12 9 ofof13 APP-009 Rev AA - 2013.04.09 MCH_MGH Rev AB - 2013.05.31 Crane Aerospace & Electronics Power Solutions Crane Aerospace & Electronics Power Solutions Quality assurance and Certification MCH/MGH Single and Dual DC-DC Converters aPPlICatION NOte 28 Volt input – 1.5 Watt Table is for reference only. See individual Series' datasheets for specific screening. StanDarD anD /eS (nOn-QMl) anD /883 (ClaSS H, QMl) Mil-prf-38534 enVirOnMental SCreening nOn-QMl 1 teSt perfOrMeD Pre-cap Inspection, Method 2017, 2032 QMl StanDarD /eS ClaSS H /883 n n n temperature Cycle (10 times) Method 1010, Cond. C, -65°C to +150°C, ambient n Method 1010, Cond. B, -55°C to +125°C, ambient n Constant acceleration Method 2001, 3000 g n Method 2001, 500 g n burn-in Method 1015, +125°C case, typical 2 96 hours n 160 hours n Final electrical test, MIl-PrF-38534, Group a, Subgroups 1 through 6, -55°C, +25°C, +125°C case Subgroups 1 and 4, +25°C case n n n n Gross Leak, Method 1014, Cond. C n n Fine Leak, Method 1014, Cond. A n n n n Hermeticity test Gross Leak, Dip n Final visual inspection, Method 2009 n Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534. Notes: 1. Standard and /ES, non-QML products, may not meet all of the requirements of MIL-PRF-38534. 2. Burn-in temperature designed to bring the case temperature to +125°C minimum. Burn-in is a powered test. Table 12: Environmental Screening tabLe 6: environMentaL sCreening–high reLiabiLity stanDarD, /es anD /883 (CLass h) www.craneae.com/interpoint Page 10 of 13 APP-009 Rev AA all - 2013.04.09 MCH/MGH Single and Dual. MCH_MGH Rev AB - 2013.05.31. This revision supersedes previous releases. All technical information is believed to be accurate, but no responsibility is assumed for errors or omissions. Crane Electronics, Inc. reserves the right to make changes in products or specifications without notice. Interpoint, MCH Series and MGH Series are trademarks of Crane Electronics, Inc. Copyright © 1999-2013 Crane Electronics, Inc. All rights reserved. www.craneae.com/interpoint Page 13 of 13