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Document overview
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Technical content
Features
small size, 1.16 in2 (7.46 cm2) - Msa s urface mount package - MG a
- –55° to +125°C operation
- 16 to VDC input
- 50 V for ms transient protection
- Fully isolated
- Fixed high frequency switching
- Inhibit function
- Indefinite short circuit protection
- Up to 76% efficiency
Description
The Interpoint™ MSA Series™ and MGA Series ™ of dc-dc converters provide up to watts of output power over the full military temperature range with up to 76% efficiency. Thick-film hybrid technique s provide military/aerospace reliability levels and optimum miniatu rization. The converters are offered with standard screening, “ES” screening, or fully compliant to “883” MIL-PRF-38534 Class H screening. Standard microcircuit drawings (SMD) are available. See “Table 12: Element Evaluati on” on page and “Table 13: Environmental Screening” on page for screening options and descriptions Converter Design The converters are switching regulators that use a flyback converter design with a constant switching frequency of 550 kHz typical. They are regulated, isolated units using a pulse width modulated topology and are built as high reliability thick-film hybrids. Isolation between input and output circuits is provided with a transformer in the forward power path and an optical link in the feedback control loop. Excellent input line transient response and audio rejection is achieved by an advanced feed- forward compen sation technique Negative output regulation is maintained by tightly coupled magnetics. Up to watts, 80% of the total output power, is available from either output, provided that the opposite output is simultaneously carrying 20% of the total power in order to maintain the specified regulation on the negative output. A predictable current limit is accomplished by direct monitoring of the output load current, which results in a constant current output. Internal input and output filters eliminate the need for external capacitors for stable operation. Output filter examples in “Figure Low Noise Output Filter MSA and MGA Single Output Models” on page and “Figure Low Noise Output Filter MSA and MGA Dual Output Models” on page provide suggeste d solutions for systems where very low output ripple is required. WiDe voltage range The MSA converters are designed to provide full power operatio n over a full to VDC voltage range. Operation below volts, including MIL-STD-704E emerge ncy power conditions is possibl e with derated power. Low-line drop out graphs, “Figure 17” on page and “Figure 23” on page 11, graphs provide more information. improveD DynamiC response The feed-forward compensation system provides excellent dynamic respons e and noise rejection. Audio rejection is typically dB. The minimum to maximum step line transient response is typically less than 1%. MoDels VDC Output SINGLE DUAL 5 ±5 5.2 (MSA only) ±12 12 ±15 Crane Aerospace & Electronics Power Solutions MSA/MGA Single and Dual DC-DC Converters Page 1 of 15 MSA_MGA Rev AC 2013.06.13
28 Volt input – 5 Watt
Crane Aerospace & Electronics Power Solutions – Interpoint Products 10301 Willows Rd. NE, Redmond, WA 98052 +1.425.882.3100 • power@crane-eg.com www.craneae.com/interpoint
The inhibit feature can be used to disable internal switching and inhibit the unit’s output. Inhibiting in this manner results in low standby current and no generation of switching noise. 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 output voltage associated with the inhibit pin is to In the inhib it mode, a maximum of mA must be sunk from the inhibit pin. See “Figure Inhibit Interface MSA and MGA” on page unDervoltage loCkout anD transient proteCtion Undervoltage lockout helps keep system current levels low during initialization or re-start operation They can withstand short term transients of up to volts without damage. A low voltage lockou t feature keeps the converter shutdown below approximately VDC to ensure smooth initialization. mil-stD-461 Use our FMSA-461 (down-leade d) or our FMGA-461 (surface mount) EMI filter to pass the CE03 requirements of MIL-STD-461C. paCkaging MSA - Down-leaded package The MSA Series converters are packaged in hermetically sealed, projection-welded metal cases which provide EMI/RFI shielding. The small size, 1.075 x 1.075 x 0.270 inches (27.31 x 27.31 x 6.86 mm), saves space and weight in critical applications. See “Figure 26: MSA Case Dimensio ns” on page 12. MGA Surface mount package The surface mount MGA dc-dc converters can be mounted with pick-and-place equipment or manually. See “Figure 28: MGA Gull-Wing Solde r Pad Layout” on page for more information. Internal compon ents are soldere d with SN96 (melting temperature 221°C) to prevent damage during reflow. Maximum reflow temperature for surface mounting the MGA converter is 220°C for a maximum of seconds. SN60, 62, or are the recommended types of solder. Hand soldering should not exceed 300°C for seconds per pin. The hermetically sealed metal cases are available in two different lead configuratio ns. See “Figure 27: MGA Case Dimensions” on page and “Figure 28: MGA Gull-Wing Solder Pad Layout” on page 13. Negative Output Output Common Positive Output Input Common Case Ground Positive Input Inhibit PWM Control Error Amp Isolated Feedback VR = Dual Output Figure 1: bloCk Diagram msa anD mga Crane Aerospace & Electronics Power Solutions MSA/MGA Single and Dual DC-DC Converters
28 Volt input – 5 W Att
www.craneae.com/interpoint Page 2 of 15 MSA_MGA Rev AC 2013.06.13
3.9 K 10 K Inhibit Input Common 10 k 12 k 5 k 400 50 k 2N3904 10V Vcc Positive Input Figure 2: inhibit interFaCe msa anD mga +C2 Case Input Common Positive Input Positive Output Output Common To Load Positive Input Input Common Positive Output Output Common From input power source EMI Filter Case Figure 3: loW noise output Filter msa anD mga single output moDels To Loads Case Input Common Positive Input Positive Output Output Common Positive Input Input Common Positive Output Output Common From input power source EMI Filter Case Negative Output Figure 4: loW noise output Filter msa anD mga Dual output moDels The filter suggestions in Figure 3 and Figure 4 will further reduce the output ripple for systems requiring very low output noise. 0.27 µF ceramic capacitor, 500 V 6.8 µF tantalum capacitor 0.27 µF ceramic capacitor Single output: 15T #28 AWG winding on toroid, m 5000 Dual output: 10T #28 AWG winding on toroid, m 5000 Crane Aerospace & Electronics Power Solutions MSA/MGA Single and Dual DC-DC Converters www.craneae.com/interpoint Page 3 of 15 MSA_MGA Rev AC 2013.06.13
Triangle in upper left corner of cover indicates pin one. Figure 5: msa pin out bottom vieW See “Figure 27: MGA Case Dimensions” on page 13. BOTTOM VIEW MSA 8 7 6 5 4 3 2 1 Squared corner and dot on top of package indicate pin one. Figure 6: mga pin out top vieW See “Figure 26: MSA Case Dimensions” on page 12. pin out MGa MoDels pin s ingle o utput Dual o utput
1 Inhibit Inhibit
3 Positive
6 Input
8 Case
11,
12 Positive
13 Positive
14 Output
15,
16 Output
17, 18 No Connection No Connection 19,
20 Case
Inhibit Leave unconnec ted “No Connection” pin Leave unconnec ted MGa pins not in use Inhibit Leave unconnec ted “No Connection” pins Connect to case ground for best EMI performanc pin out Msa MoDels pin s ingle o utput Dual o utput
1 Positive
2 Output
5 Inhibit Inhibit
6 Positive
7 Input
To meet specified performance for the MGA, all pins must be connected except “No Connection” pins and Inhibit pin. table 1: msa pin out table 2: msa pins not in use table 3: mga pin out table 4: mga pins not in use Crane Aerospace & Electronics Power Solutions MSA/MGA Single and Dual DC-DC Converters www.craneae.com/interpoint Page 4 of 15 MSA_MGA Rev AC 2013.06.13
(S = single, D = dual) (R = decimal point, 5R2 = 5.2 Vout) Screening (Standard screening has no designator in this position.) MoDel nuMberinG key sMD nuMbers StanDarD MiCrOCirCuit Drawing (SMD) MSa SiMilar part 5962-9309201HxC MSA2805S/883 5962-0251301 H x C MSA285R2S/883 5962-9309301H x C MSA2812S/883 5962-9309401H x C MSA2815S/883 5962-0052201H x C MSA2805 D /883 5962-9308901 H x C MSA2812D/883 5962-9309001 H x C MSA2815D/883 For exact specifica tions for an SMD product, refer to the SMD drawing. SMDs can be downloaded from: http://www.landandmaritime.dla.mil/programs/smcr MoDel n u M ber o ptions tO DeterMine the MODel nuMber enter One OptiOn frOM eaCh CategOry in the fOrM belOw. cateGory base Model and i nput Voltage o utput Voltage 1 n umber of o utputs 2 case options 3 screening 4 options MSA 05, 5R2, 12, 15 S MSA – down-leade d: leave blank (standard, leave blank) MGA 05, 12,
15 D MGA –
leads: leave blank ES MGA – gull wings: Z 883 Fill in For Mo D el # Notes: 5R2 is a 5.2 output model. Number of Outputs: S is a single output and D is a dual output Case Options: For the MSA down-lead ed case leave the case option blank. For the MGA straight-lead case, leave the case option blank. For the MGA, surface mount gull-wing case, insert the letter “Z” in the case option position. Screenin 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 and “Table 12: Environmental Screening” on page 13. MoDel nuMberinG key MGA 28 12 S Z / 883 Base Model Input Voltage Output Voltage Screening Number of Outputs (S = single, D = dual) Gull Wing Lead Option (Straight leaded case has no designator in this position.) (Standard screening has no designator in this position.) sMD nuMbers StanDarD MiCrOCirCuit Drawing (SMD) Mga SiMilar part 5962-9309201HZC MGA2805SZ/883 5962-9309301HZC MGA2812SZ/883 5962-9309401HZC MGA2815SZ/883 5962-0052201HZC MGA2805DZ/883 5962-9308901 H Z C MGA2812DZ/883 5962-9309001 H Z C MGA2815DZ/883 For exact specifica tions for an SMD product, refer to the SMD drawin SMD numbers are shown for the surface mount gull-wing case. For the straight- lead case, replace the Z (HZC) in the SMD with a Y (HYC). SMDs can be downloaded from: http://www. landandmaritime.dla.mil/programs/smcr table 5: msa smD numbers table 6: mga smD numbers table 7: msa anD mga moDel number options Figure 7: msa moDel numbering key Figure 8: mga moDel numbering key Crane Aerospace & Electronics Power Solutions MSA/MGA Single and Dual DC-DC Converters www.craneae.com/interpoint Page 5 of 15 MSA_MGA Rev AC 2013.06.13
table 8: operating ConDitions, all moDels : 25°C tC, 28 v DC vin, 100% loaD, unless otherWise speCiFieD. A LL M ODELS PARAMETER CONDITIONS MIN TYP MA x UNITS LEAD SOLDERING TEMPERATURE 10 SECONDS MA x. P ER L EAD — — 300 °C MGA, S URFACE M OUNT SN 60, OR 63 R ECOMMENDED 220°C for max. of seconds S OLDER R EFLOW 2 STORAGE TEMPERATURE 1 -65 — +150 °C CASE OPERATING FULL POWER -55 — +125 °C TEMPERATURE ABSOLUTE 1 -55 — +135 DERATING OUTPUT POWER/CURRENT
1 LINEARLY From 100% at 125°C to 0% at 135°C
ISOLATION, INPUT TO OUTPUT 500 VDC AT 25°C 100 — — Megohms A NY PIN TO CASE E x CEPT CASE P IN I NPUT TO O UTPUT C APACITANCE 1 — 50 — pF U NDER V OLTAGE L OC k OUT 1 — 13 — V CURRENT LIMIT 1, 3 % OF FULL LOAD — 115% — % AUDIO REJECTION 1 — 50 — dB CONVERSION FREQUENCY FREE RUN -55° TO +125°C 400 — 600 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 — — 4 mA REFERENCED TO INPUT COMMON INHIBIT ACTIVE HIGH (OUTPUT ENABLED) Do not apply a voltage to the inhibit pin. 4 INHIBIT PIN CONDITION OPEN COLLECTOR OR UNCONNECTED OPEN PIN VOLTAGE 1 9 — 11 V Notes: Guaranteed by qualification test and/or analysis. Not an in-line test. See “Figure 28: MGA Gull-Wing Solder Pad Layout” on page for more information Dual outputs: The over-current limit will trigger when the sum of the currents from both outputs reaches 115% (typical value) of the maximum rated “total” current of both outputs. 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. Crane Aerospace & Electronics Power Solutions MSA/MGA Single and Dual DC-DC Converters www.craneae.com/interpoint Page 6 of 15 MSA_MGA Rev AC 2013.06.13
table 9: eleCtriCal CharaCteristiCs: -55°C to +125°C tC, 28 v DC vin, 100% loaD, Free run, unless otherWise speCiFieD. Notes Guaranteed by qualification test and/or analysis. Not an in-line test. An external µH inductor, added in series to the input, is necessary to maintain specifications. Indefinite short circuit protection not guaranteed above 125°C (case). Recovery time is measured from application of the transient to point at which Vout is within of Vout at final value. Transition time >10 µs. MSA2805S MSA285R2S MSA/MGA SINGLE OUTPUT MODELS MGA2805S ( no MGA285R2S UNITSPARAMETER CONDITIONS MIN TYP MA x MIN TYP MA x OUTPUT OUTPUT CURRENT VIN = 16 to 40 VDC 0 — 1000 0 — 962 mA OUTPUT POWER VIN = 16 to 40 VDC 0 — 5 0 — 5 W OUTPUT RIPPLE TC = 25°C — 125 350 — 110 335 mV p-p kH Z - MH Z TC = -55°C TO +125°C — — 525 — — 525 LINE REGULATION VIN = 16 TO 40 VDC — 10 50 — 10 50 mV LOAD REGULATION NO LOAD TO FULL — 10 50 — 10 50 mV INPUT VOLTAGE CONTINUOUS 16 28 40 16 28 40 VDC NO LOAD TO FULL TRANSIENT ms 1 — — 50 — — 50 V INPUT CURRENT NO LOAD — 27 40 — 28 40 mA INHIBITED — 3 5 — 3 4 INPUT RIPPLE CURRENT 2 10 kHz - 10 MHz — 30 200 — 30 150 mA p-p EFFICIENCY TC = 25°C 66 71 — 66 71 — % LOAD FAULT 3, 4 POWER DISSIPATION — — 2.0 — — 2.2 W SHORT CIRCUIT RECOVERY 1 — — 75 — — 75 ms STEP LOAD RESPONSE 4, 5 TRANSIENT — — ±750 — — ±750 mV pk 50% 100% 50% RECOVERY — — 1500 — — 1500 µs STEP LINE RESPONSE 1, 4, 5 TRANSIENT — — ±500 — — ±500 mV pk VDC RECOVERY — — 900 — — 900 µs START-UP DELAY — — 75 — — 75 1 ms VIN, F ULL L O AD OVERSHOOT 1 — — 200 — — 500 mV pk CAPACITIVE LOAD TC = 25°C NO EFFECT ON DC PERFORMANCE — — 300 — — 300 µF Crane Aerospace & Electronics Power Solutions MSA/MGA Single and Dual DC-DC Converters www.craneae.com/interpoint Page 7 of 15 MSA_MGA Rev AC 2013.06.13
SINGLE OUTPUT MODELS MGA2812S MGA2815S UNITSPARAMETER CONDITIONS MIN TYP MA x MIN TYP MA x OUTPUT OUTPUT CURRENT VIN = 16 to 40 VDC 0 — 417 0 — 333 mA OUTPUT POWER VIN = 16 to 40 VDC 0 — 5 0 — 5 W OUTPUT RIPPLE TC = 25°C — 50 200 — 50 170 mV p-p kH Z - MH Z TC = -55°C TO +125°C — — 300 — — 250 LINE REGULATION VIN = 16 TO 40 VDC — 10 50 — 10 50 mV LOAD REGULATION NO LOAD TO FULL — 10 50 — 10 50 mV INPUT VOLTAGE CONTINUOUS 16 28 40 16 28 40 VDC NO LOAD TO FULL TRANSIENT ms 1 — — 50 — — 50 V INPUT CURRENT NO LOAD — 29 42 — 31 44 mA INHIBITED — 3 5 — 3 5 INPUT RIPPLE CURRENT 2 10 kHz - 10 MHz — 30 150 — 30 150 mA p-p EFFICIENCY TC = 25°C 70 76 — 71 76 — % LOAD FAULT 3, 4 POWER DISSIPATION — — 2.1 — — 2.0 W SHORT CIRCUIT RECOVERY 1 — — 30 — — 30 ms STEP LOAD RESPONSE 4, 5 TRANSIENT — — ±1100 — — ±1500 mV pk 50% 100% 50% RECOVERY — — 3000 — — 3500 µs STEP LINE RESPONSE 1, 4, 5 TRANSIENT — — ±800 — — ±500 mV pk VDC RECOVERY — — 1300 — — 1300 µs START-UP DELAY — — 30 — — 30 ms VIN, F ULL L O AD OVERSHOOT 1 — — 500 — — 500 mV pk CAPACITIVE LOAD TC = 25°C NO EFFECT ON DC PERFORMANCE — — 500 — — 500 µF Notes Guaranteed by qualification test and/or analysis. Not an in-line test. An external µH inductor, added in series to the input, is necessary to maintain specifications. Indefinite short circuit protection not guaranteed above 125°C (case). Recovery time is measured from application of the transient to point at which Vout is within of Vout at final value. Transition time >10 µs. table 10: eleCtriCal CharaCteristiCs: -55°C to +125°C tC, 28 v DC vin, 100% loaD, Free run, unless otherWise speCiFieD. Crane Aerospace & Electronics Power Solutions MSA/MGA Single and Dual DC-DC Converters www.craneae.com/interpoint Page 8 of 15 MSA_MGA Rev AC 2013.06.13
MSA2805D MSA2812D MSA2815D MSA/MGA D UAL OUTPUT MODELS MGA2805D MGA2812D MGA2815D UNITSPARAMETER CONDITIONS MIN TYP MA x MIN TYP MA x MIN TYP MA x OUTPUT OUTPUT CURRENT 2 EITHER OUTPUT — ±500 800 — ±208 333 — ±167 267 mA VIN = 16 to 40 VDC TOTAL OUTPUT — — 1000 — — 416 — — 334 OUTPUT POWER 2 EITHER OUTPUT — ±2.50 4 — ±2.50 4 — ±2.50 4 W VIN = 16 to 40 VDC TOTAL OUTPUT — — 5 — — 5 — — 5 OUTPUT RIPPLE TC = 25°C — — 150 — 40 140 — 60 150 mV p-p kH Z - MH Z ± VOUT TC = -55°C TO +125°C — — 300 — — 250 — — 250 LINE REGULATION +VOUT — 10 25 — 10 50 — 10 50 mV VIN = 16 TO 40 V -VOUT — 40 75 — 40 180 — 40 180 LOAD REGULATION +VOUT — 10 50 — 10 50 — 10 50 mV N O LOAD TO FULL -VOUT — 50 200 — 50 200 — 50 200 C ROSS RE GULATION 1, 3 Figure 24 (10-90%) — 10 20 — 8 15 — 7 15 % E FFECT ON -VOUT Figure 25 (50-10%) — 5 8 — 3.7 6 — 3 6 INPUT VOLTAGE NO LOAD TO FULL CONTINUOUS 16 28 40 16 28 40 16 28 40 VDC TRANSIENT INPUT CURRENT NO LOAD — 30 35 — 33 58 — 38 60 mA INHIBITED — 3 5 — 3 5 — 3 5 INPUT RIPPLE CURRENT 4 10 kHz - 10 MHz — 30 160 — 30 150 — 30 150 mA p-p EFFICIENCY TC = 25°C 68 72 — 69 75 — 70 75 — % LOAD FAULT 5, 6 POWER DISSIPATION — — 2.0 — — 1.9 — — 1.8 W SHORT CIRCUIT RECOVERY STEP LOAD RESPONSE 6, 7 TRANSIENT — — ±500 — — ±1400 — — ±1400 mV pk 50% 100% 50% RECOVERY STEP LINE RESPONSE 1, 6, 7 TRANSIENT — — ±750 — — ±500 — — ±1500 mV pk VDC RECOVERY START-UP DELAY — — 25 — — 30 — — 25 ms TO 28 VIN, FULL L OAD OVERSHOOT 1 — — 750 — — 500 — — 500 mV pk CAPACITIVE LOAD TC = 25°C NO EFFECT ON DC PERFORMANCE — — 10 — — 100 — — 10 µF Notes Guaranteed by qualification test and/or analysis. Not an in-line test. Up to watts (80% of full power) is available from either output providing the opposite output is carrying 20% of total power. Shows regulation effect on the minus output during defined cross loading conditions. See “Figure 24” and “Figure 25” on page 11. An external µH inductor, added in series to the input, is necessary to maintain specifications. Indefinite short circuit protection not guaranteed above 125°C (case). Recovery time is measured from application of the transient to point at which Vout is within of Vout at final value. Transition time >10 µs. table 11: eleCtriCal CharaCteristiCs: -55°C to +125°C tC, 28 v DC vin, 100% loaD, Free run, unless otherWise speCiFieD. Crane Aerospace & Electronics Power Solutions MSA/MGA Single and Dual DC-DC Converters www.craneae.com/interpoint Page 9 of 15 MSA_MGA Rev AC 2013.06.13
OUTPUT POWER (Watts) MSA/MGA2815D EFFICIENCY EFFICIENCY (%) 40V 1 2 3 4 5 6 16V 28V 100 µs/div
16 V TO 40 V
MSA/MGA2805S STEP LINE RESPONSE 20mV/div. VIN20V/div. VOUT OUTPUT POWER (Watts) MSA/MGA2805S EFFICIENCY EFFICIENCY (%) 40V 1 2 3 4 5 6 16V 28V Figure 11 OUTPUT POWER (Watts) MSA/MGA2812S EFFICIENCY EFFICIENCY (%) 40V 1 2 3 4 5 6 16V 28V Figure 12 Figure 13 Figure 14 OUTPUT POWER (Watts) MSA/MGA2815S EFFICIENCY EFFICIENCY (%) 40V 1 2 3 4 5 6 16V 28V 100 µs/div 50% 100% MSA/MGA2805S STEP LOAD RESPONSE 50mV/div. 50% to 100% 100% to 50% Figure 15 100 µs/div 10% 100% MSA/MGA2805S STEP LOAD RESPONSE 50mV/div. 10% to 100% 100% to 10% Figure 16 Figure 17 1 ms/div MSA/MGA2805S TURN-ON INTO NO LOAD 1V/div. VIN20V/div. VOUT typiCal perFormanCe plots: 25°C tC, 28 vIN, 100% loaD, Free run, unless otherWise speCiFieD. These are examples for reference only and are not guaranteed specifications. OUTPUT POWER (Watts) 50 mV DROP LOW LINE DROPOUT VS. LOAD INPUT VOLTAGE (Volts) 1 2 3 4 5 6 2805S 2815S 2812S Crane Aerospace & Electronics Power Solutions MSA/MGA Single and Dual DC-DC Converters www.craneae.com/interpoint Page 10 of 15 MSA_MGA Rev AC 2013.06.13
typiCal perFormanCe plots: 28 vIN, 25°C tC, 100% loaD, Free run, unless otherWise speCiFieD. These are examples for reference only and are not guaranteed specifications. Figure 18 500 µs/div MSA/MGA2815D TURN-ON INTO NO LOAD 5V/div. VIN20V/div. +VOUT –VOUT Figure 19 OUTPUT LOAD (+VOUT % / –VOUT %) 90–10% LOAD on +V, 10-90% LOAD on –V MSA/MGA DUAL CROSS REGULATION OUT VOLTAGE CHANGE (%) –10 90/10 70/30 50/50 30/70 10/90 2815D 2812D Figure 20 OUTPUT POWER (Watts) 50 mV DROP MSA/MGA LOW LINE DROPOUT VS. LOAD INPUT VOLTAGE (Volts) 1 2 3 4 5 6 2812D 2815D Figure 21 Figure 22 OUTPUT LOAD (%) COND. A: 50% LOAD +V; 10% to 50% –V COND. B: 50% LOAD –V; 10% to 50% +V MSA/MGA DUAL CROSS REGULATION OUT VOLTAGE CHANGE (%) 10 20 30 40 50 2815D 2812D 2812D COND B COND A Figure 23 Figure 24 200 µs/div MSA/MGA2815D INPUT STEP LINE RESPONSE 100mV/div. VIN20V/div. +VOUT –VOUT 200 µs/div 10% 90% MSA/MGA2815D +VO STEP LOAD RESPONSE 200mV/div. 10% to 90% 90% to 10% –POUT=0.5W 100 µs/div 10% 50%) MSA/MGA2815D +VO STEP LOAD RESPONSE 100mV/div. 10% to 50% 50% to 10% –POUT=2.5W Figure 25 FREQUENCY (kHz) MSA SERIES AUDIO REJECTION ATTENUATION (dB) 100 0.1 1 10 100 Crane Aerospace & Electronics Power Solutions MSA/MGA Single and Dual DC-DC Converters www.craneae.com/interpoint Page 11 of 15 MSA_MGA Rev AC 2013.06.13
0.000 0.132 (3.35) 0.932 (23.67) 0.000 0.132 (3.35) 8 7 6 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) BOTTOM VIEW CASE C1 0.205 ±0.010 (5.21 ±0.25) Projection Weld Squared corner and dot on top of case indicate pin one. Weight: 15 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 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. Materials Header Cold Rolled Steel/Nickel/Gold Cover Cold Rolled Steel/Nickel Pins #52 alloy, gold, compression glass seal Gold plating of 50 - 150 microinches included in pin diameter Seal hole: 0.070 ±0.003 (1.78 ±0.08) Case C1 MSA, Rev B, 2013.04.15 Please refer to the numerical dimensions for accuracy. 1.075 max. (27.31) 1.075 max. (27.31) Figure 26: msa Case Dimensions Crane Aerospace & Electronics Power Solutions MSA/MGA Single and Dual DC-DC Converters www.craneae.com/interpoint Page 12 of 15 MSA_MGA Rev AC 2013.06.13
Figure 27: mga Case Dimensions Figure 28: mga gull-Wing solDer paD layout Straight Leads (This view shows straight leads.) 0.010 (0.25) 0.125 ref. (3.18) Leads are solder dipped and lead dimensions are prior to solder dip. 0.08 (2.0) 0.010 (0.25) Bottom of lead to bottom of case 0.055 (1.40) 0.070 (1.78) TOP VIEW CASE D1 1.35 ref. (34.29) 0.010 (0.25) 0.08 (2.0) 0.250 max. (6.35) 0.50 (12.7) 2.115 ref. (53.72) 0.015 (0.38) Seam seal 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) 1.000 (25.40) 1 Gull Wing Leads Option 0.000 0.000 Weight: 15 grams max. 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 MGA gull-wing solder pads 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 - 225 microinches is included in pin diameter Seal hole: 0.040 ±0.002 (1.02 ±0.05) Case D1, Rev D, 2013.04.22 1.110 max (28.19) 1.110 max (28.19) (Center to center) 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. MGA2805S The gull wing option (configuration) requires “Z” as a “case designator” in the model number. ex. MGA2805Z surFaCe mount Case anD leaD options 0.102 (2.59) 0.090 (2.29) 0.030 (0.76) 0.050 (1.27) 4X 0.100 (2.54) 18X 1.000 (25.40) 1.000 (25.40) CASE D1 GULL-WING PADS Case D1 MGA Solder Pads, Rev F, 2013.05.31 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 MGA 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. Solder, copper, or Au/Ni plate are preferred over solder mask for adhesive attach. 5. Pre-tin base of converter prior to soldering. 6. 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. 7. Do not exceed 220°C as measured on the body of the converter (top or bottom). 8. 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. 9. 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 8). The leads alone do not provide sufficient mechanical attachment. Crane Aerospace & Electronics Power Solutions MSA/MGA Single and Dual DC-DC Converters www.craneae.com/interpoint Page 13 of 15 MSA_MGA Rev AC 2013.06.13
table 5: element evaluation–high reliability stanDarD, /es anD /883 (Class h) StanDarD anD /eS (nOn-QMl) anD /883 (ClaSS h, QMl) Mil-prf-38534 eleMent eValuatiOn nOn-QMl 1 QMl COMpOnent-leVel teSt perfOrMeD StanDarD anD /eS ClaSS h /883 M/S 2 M/S 2 p 3 Element Electrical n n n Visual n n Internal Visual n Final Electrical n n Wire Bond Evaluation n n 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 12: element evaluation Crane Aerospace & Electronics Power Solutions MSA/MGA Single and Dual DC-DC Converters www.craneae.com/interpoint Page 14 of 15 MSA_MGA Rev AC 2013.06.13
Table is for reference only. See individual Series' datasheets for specific screening. table 6: environmental sCreening–high reliability stanDarD, /es anD /883 (Class h) StanDarD anD /eS (nOn-QMl) anD /883 (ClaSS h, QMl) Mil-prf-38534 enVirOnMental SCreening nOn-QMl 1 QMl teSt perfOrMeD StanDarD /eS ClaSS h /883 pre-cap inspection, Method 2017, 2032 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 n Subgroups 1 and 4, +25°C case n n n Hermeticity test Gross Leak, Method 1014, Cond. C n n Fine Leak, Method 1014, Cond. A n n Gross Leak, Dip n Final visual inspection, Method 2009 n n 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 13: environmental sCreening Crane Aerospace & Electronics Power Solutions MSA/MGA Single and Dual, MSA_MGA Rev AC - 2013.06.13. This revision supersedes all 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 specifica tions without notice. Interpoint, MSA Series and MGA Series are trademarks of Crane Electronics, Inc. Copyright 1999-2013 Crane Electronics, Inc. All rights reserved. www.craneae.com/interpoint MSA/MGA Single and Dual DC-DC Converters