MSA2805S CRANE | Alldatasheet

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Technical content

Weight: 15 grams maximum. Screening: Standard, ES, or 883 (Class H). SINGLE 5.2 DUAL ±12 ±15

DESCRIPTION

The MSA Series™ of high frequency DC/DC converters offers a new standard of performance for low power, military/aerospace grade DC/DC converters. MSA parts provide up to 5 watts output power over the full military temperature range with up to 76% efficiency. Thick-film hybrid techniques provide military/aerospace reliability levels and optimum miniaturization. The hermetically sealed case is only 1.075 by 1.075 inches — with a height of only 0.270 inches. Power density for the MSA Series parts is 16 watts per cubic inch. The MSA Series’ small size, low height, and hermetically sealed metal enclosures make them ideal for use in military, aerospace and other high reliability applications. Units are available with standard, screening, “ES”, and fully compliant SMD “883” screening. See page 8 for screening options and descriptions. CONVERTER DESIGN The MSA converters are switching regulators that use a flyback converter design with a constant switching frequency of 550 kHz. They are regulated, isolated units using a pulse width modulated topology and 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 compensation technique. Negative output regulation is maintained by tightly coupled magnetics. Up to 4 watts, 80% of the total output power, is available from either output, provided that the opposite output is simultane- ously carrying 20% of the total power. Each output must carry a minimum of 20% of the total output power in order to maintain spec- ified regulation on the negative output. Predictable current limit is accomplished by direct monitoring of the output load current, which results in a constant current output above the overload point. Internal input and output filters eliminate the need for external capacitors. WIDE VOLTAGERANGE The MSA converters are designed to provide full power operation over a full 16 to 40 VDC voltage range. Operation below 16 volts, including MIL-STD-704E emergency power conditions is possible with derated power. Please refer to the low line dropout graphs (Figures 17 and 18) for details. A low voltage lockout feature keeps the converter shutdown below approximately 13 VDC to ensure smooth initialization. IMPROVED DYNAMIC RESPONSE The MSA feed-forward compensation system provides excellent dynamic response and noise rejection. Audio rejection is typically 50 dB. The minimum to maximum step line transient response is typi- cally less than 1%. INHIBIT FUNCTION MSA converters provide a TTL open collector-compatible inhibit feature that 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 TTL compatible low ( ≤0.8 V) is applied to the inhibit pin. The unit is enabled when the pin, which is internally connected to a pull-up resistor, is left unconnected or is connected to an open collector gate. The open circuit output voltage associated with the inhibit pin is 9 to 11 V. In the inhibit mode, a maximum of 4 mA must be sunk from the inhibit pin. UNDERVOLTAGELOCKOUT AND TRANSIENT PROTECTION Undervoltage lockout helps keep system current levels low during initialization or re-start operations. They can withstand short term transients of up to 50 volts without damage. DC/DC CONVERTERS

28 VOLT INPUT

5 WATT

FEATURES

  • –55° to +125°C operation
  • 16 to 40 VDC input
  • Fully isolated
  • Optocoupler feedback
  • Fixed frequency, 550 kHz typical (400 kHz typ. 60 V output model)
  • Topology – Flyback
  • 50 V for up to 50 ms transient protection
  • Inhibit function
  • Indefinite short circuit protection
  • Up to 76% efficiency, 16 W/in

RECOMMENDED OPERATING CONDITIONS TYPICAL CHARACTERISTICSINHIBITABSOLUTE MAXIMUM RATINGS Input Voltage

  • 16 to 40 V Output Power
  • 5 watts Lead Soldering Temperature (10 sec per lead)
  • 300°C Storage Temperature Range (Case)
  • –65°C to +135°C MSA SERIES

Output Voltage Temperature Coefficient

  • 100 ppm/°C typical Input to Output Capacitance
  • 50 pF typical Isolation
  • 100 megohm minimum at 500 V Audio Rejection
  • 50 dB typical Conversion Frequency
  • 550 kHz typical (400 kHz 60 V model) 450 kHz min, 600 kHz max 350 kHz min, 450 kHz max 60 V model Inhibit Pin Voltage (unit enabled)
  • 9 t o 1 1 V Input Voltage Range
  • 16 to 40 VDC continuous
  • 50 V for up to 50 msec transient Case Operating Temperature (Tc)
  • –55°C to +125°C full power
  • –55°C to +135°C absolute Derating Output Power/Current (Tc)
  • Linearly from 100% at 125°C to 0% at 135°C Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified. Inhibit TTL Open Collector
  • Logic low (output disabled) Logic low voltage ≤0.8 V max Inhibit pin current 4 mA max
  • Referenced to input common
  • Logic high (output enabled) Open collector Notes 1. MSA2860S specifications are at 25°Tc only, contact your Interpoint representative for more information on over temperature specs. 2. Line regulation for /ES and non /ES 2805S models at 16 to 17 V IN and 110 °C to 125°C (case) is 5% (max). 3. Indefinite short circuit protection not guaranteed above 125°C (case). 4. Recovery time is measured from application of the transient to point at which VOUT is within 1% of VOUT at final value. 5. Transition time >10µs. SINGLE OUTPUT MODELS MSA2805S MSA285R2S MSA2812S MSA2815S MSA2860S 1 PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS OUTPUT CURRENT Tc = –55°C TO +125°C V IN = 16 TO 40 VDC 0 — 1000 0 — 962 0 — 417 0 — 333 0 — 20 mA OUTPUT POWER V IN = 16 TO 40 VDC OUTPUT RIPPLE VOLTAGE 10 kHz - 2 MHz — 125 350 — 110 335 — 50 200 — 50 170 — — 300 mV p-p LINE REGULATION V IN = 16 TO 40 VDC Tc = –55°C TO +125°C — 10 50 2 — 10 50 — 10 50 — 10 50 — — 300 mV LOAD REGULATION NO LOAD TO FULL Tc = –55°C TO +125°C — 10 50 — 10 50 — 10 50 — 10 50 — — 300 mV INPUT VOLTAGE Tc = –55°C TO +125°C NO LOAD TO FULL CONTINUOUS 16 28 40 16 28 40 16 28 40 16 28 40 16 28 40 VDC TRANSIENT 50 ms 0 — 50 0 — 50 0 — 50 0 — 50 0 — 50 V INPUT CURRENT NO LOAD — 27 40 — 28 40 — 29 42 — 31 44 — — 30 Tc = –55°C TO +125°C FULL LOAD — 250 — — 250 — — 235 — — 235 — — 72 — mA INHIBITED — 3 5 — 3 5 — 3 5 — 3 5 — 3 5 INPUT RIPPLE 10 kHz - 10 MHz — 25 100 — 25 100 — 25 100 — 25 100 — — 90 mA p-pCURRENT Tc = –55°C TO +125°C — 30 150 — 30 150 — 30 150 — 30 150 — — — EFFICIENCY 66 71 — 66 71 — 70 76 — 71 76 — 70 75 — % SHORT CIRCUIT RECOVERY — 12.5 25 — 1.5 25 — 1 10 — 1 10 — — — ms STEP LOAD 50% - 100% - 50% RESPONSE4, 5 TRANSIENT — 100 250 — 100 250 — 150 375 — 200 500 — — — mV pk RECOVERY — 100 250 — 100 250 — 200 500 — 200 500 — — — µs STEP LINE TRANSIENT RESPONSE4, 5 16 TO 40 VIN — 50 150 — 50 150 — 80 200 — 50 125 — — — mV pk

40 TO 16 VIN — 50 150 — 50 150 — 100 250 — 50 125 — — —

16 TO 40 VIN — 100 250 — 100 250 — 250 625 — 250 625 — — — µs

40 TO 16 VIN — 200 500 — 200 500 — 250 625 — 250 625 — — —

START-UP DELAY — 10 25 — 10 25 — 3 10 — 3 10 — — — ms OVERSHOOT — 0 50 — 0 50 — 0 120 — 0 150 — — — mV pk

Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified. Notes 1. Up to 4 watts (80% of full power) is available from either output providing the opposite output is carrying 20% of total power. 2. Shows regulation effect on the minus output during the defined cross loading conditions. See Figures 15 and 16. 3. Indefinite short circuit protection not guaranteed above 125°C (case). 4. Recovery time is measured from application of the transient to point at which VOUT is within 1% of VOUT at final value. 5. Transition time >10µs. DUAL OUTPUT MODELS MSA 2805D MSA2812D MSA2815D PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS OUTPUT CURRENT1 VIN = 16 to 40 VDC Tc = –55°C to +125°C — ±500 800 — ±208 333 — ±167 267 mA OUTPUT POWER1 VIN = 16 to 40 VDC OUTPUT RIPPLE VOLT. 10 kHz - 2 MHz — — 150 — 40 140 — 60 150 mV p-p LINE REGULATION Tc = –55°C to +125°C Vin = 16 to 40 VDC +V OUT — 10 25 — 10 50 — 10 50 mV –VOUT — 40 75 — 40 180 — 40 180 LOAD REGULATION Tc = –55°C to +125°C NO LOAD TO FULL +V OUT — 10 50 — 10 50 — 10 50 mV –VOUT — 50 200 — 50 200 — 50 200 CROSS REGULATION2 +PO = 20 - 80 %, –P O = 80 - 20% —1 0 2 0 — 8 1 5 —71 5 — 5 8 — 3.7 6 — 3 6 INPUT VOLTAGE NO LOAD TO FULL Tc = –55°C to +125° ˜CONTINUOUS 16 28 40 16 28 40 16 28 40 VDC TRANSIENT 50 msec — — 50 — — 50 — — 50 V INPUT CURRENT NO LOAD — 30 35 — 33 58 — 38 60 Tc = –55°C to +125°C FULL LOAD — 248 — — 235 — — 235 — mA INHIBITED — 3 5 — 3 5 — 3 5 INPUT RIPPLE 10 kHz TO 10 MHz — 25 80 — 25 100 — 25 100 CURRENT Tc = –55°C to +125°C — 30 160 — 30 150 — 30 150 mA p-p EFFICIENCY 68 72 — 69 75 — 70 75 — % LOAD FAULT3, 4 POWER DISSIPATION RECOVERY — — 50 — 1 10 — 1 10 ms STEP LOAD 50% - 100% - 50% BALANCED RESPONSE4, 5 TRANSIENT — — ±150 — ±300 ±750 — ±300 ±750 mV RECOVERY — — 100 — 200 500 — 500 1250 µs STEP LINE RESP.4, 5 TRANSIENT mV pk RECOVERY

16 TO 40 VDC — — 1200 — 150 375 — 250 625

40 TO 16 VDC — — 1200 — 400 1000 — 800 2000

µs START-UP DELAY — — 25 — 3 10 — 3 10 ms OVERSHOOT — — 500 — 0 120 — 0 150 mV pk

(S = single, D = dual) (R = decimal point, 5R2 = 5.2 Vout) Screening (Standard screening has no designator in this position.) Pin Single Output Dual Output

1 Positive Output Positive Output

2 Output Common Output Common

3 No connection Negative Output

4 No connection No connection

5 Inhibit Inhibit

6 Positive Input Positive Input

7 Input Common Input Common

8 Case Ground Case Ground

DRAWING (SMD) 5962-9309201HXC IN PROCESS 5962-9309301HXC 5962-9309401HXC 5962-0052201HXC 5962-9308901HXC 5962-9309001HXC MSA S ERIES SIMILAR PART MSA2805S/883 MSA285R2S/883 MSA2812S/883 MSA2815S/883 MSA2860S/883 MSA2812D/883 MSA2815D/883 For exact specifications for an SMD product, refer to the SMD drawing. Call your Interpoint representative for status on MSA SMD releases. “883” suffix indicates SMD similar part. SMDs can be downloaded from: http://www.dscc.dla.mil/programs/smcr BOTTOM VIEW MSA 876 54321 Squared corner and dot on top of package indicate pin one. FIGURE 1: PIN OUT BOTTOM VIEW See page 7 for dimensions.

Typical Performance Curves: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified. FIGURE 5 FIGURE 7 OUTPUT POWER (Watts) MSA2815D EFFICIENCY EFFIC IE NCY (% 40V 123456 16V 28V 100µs/div 16V TO 40V MSA2805S STEP LINE RESPONSE 20m V/d iv. VIN20V/d iv. VOUT OUTPUT POWER (Watts) MSA2805S EFFICIENCY EFFIC IE NCY (% 40V 123456 16V 28V FIGURE 2 OUTPUT POWER (Watts) MSA2812S EFFICIENCY EFFIC IE NCY (% 40V 123456 16V 28V FIGURE 3 FREQUENCY (kHz) MSA SERIES AUDIO REJECTION ATTENUATIO N (dB) 100 0.1 1 10 100 FIGURE 6 FIGURE 4 OUTPUT POWER (Watts) MSA2815S EFFICIENCY EFFIC IE NCY (% 40V 123456 16V 28V FIGURE 11 FIGURE 13 200µs/div 16V TO 40V MSA2815D INPUT STEP LINE RESPONSE 100m V/d iv. VIN20V/d iv. +VOUT –VOUT 200µs/div 10% 90% MSA2815D +VO STEP LOAD RESPONSE 200m V/d iv. 10% to 90% 90% to 10% –POUT=0.5W 100µs/div 50% 100% MSA2805S STEP LOAD RESPONSE 50m V/d iv. 50% to 100% 100% to 50% FIGURE 8 100µs/div 10% 100% MSA2805S STEP LOAD RESPONSE 50m V/d iv. 10% to 100% 100% to 10% FIGURE 9 100µs/div 10% 50%) MSA2815D +VO STEP LOAD RESPONSE 100m V/d iv. 10% to 50% 50% to 10% –POUT=2.5W FIGURE 12 FIGURE 10 1 ms / div MSA2805S TURN-ON INTO NO LOAD 1V/d iv. VIN20V/d iv. VOUT

Typical Performance Curves: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified. FIGURE 17 OUTPUT POWER (Watts) 50 mV DROP LOW LINE DROPOUT VS. LOAD IN PUT V OLTAGE (Volts 123456 MSA2805S MSA2815S MSA2812S 500µs/div MSA2815D TURN-ON INTO NO LOAD 5V/d iv. VIN20V/d iv. +VOUT –VOUT FIGURE 14 OUTPUT LOAD (+VOUT % / –VOUT %) 90–10% LOAD on +V, 10-90% LOAD on –V MSA DUAL CROSS REGULATION –VOUT V OLTAGE C HANGE (% –10 90/10 70/30 50/50 30/70 10/90 2815D 2812D FIGURE 15 OUTPUT POWER (Watts) 50 mV DROP LOW LINE DROPOUT VS. LOAD IN PUT V OLTAGE (Volts 123456 MSA2812D MSA2815D FIGURE 18 FIGURE 16 OUTPUT LOAD (%) COND. A: 50% LOAD +V; 10% to 50% –V COND. B: 50% LOAD –V; 10% to 50% +V MSA DUAL CROSS REGULATION –VOUT V OLTAGE C HANGE (% 10 20 30 40 50 2815D 2812D 2812D COND B COND A

for pin configurations. 1.075 max (27.31) Materials Header Cold Rolled Steel/Nickel/Gold Cover Cold Rolled Steel/Nickel Pins Copper/Nickel/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 1.075 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 54321 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 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 WeldSeam Seal Squared corner and dot on top of case indicate pin one. FIGURE 20: CASE C1 FIGURE 19: CASE C MAXIMUM DIMENSIONS Note: Although every effort has been made to render the case drawings at actual size, variations in the printing process may ca use some distortion. Please refer to the numerical dimensions for accuracy.

TEST (125°C Products) STANDARD /ES /883 (Class H)* PRE-CAP INSPECTION Method 2017, 2032 yes yes yes TEMPERATURE CYCLE (10 times) Method 1010, Cond. C, -65°C to 150°C no no yes Method 1010, Cond. B, -55°C to 125°C no yes no CONSTANT ACCELERATION Method 2001, 3000 g no no yes Method 2001, 500 g no yes no BURN-IN Method 1015, 160 hours at 125°C no no yes 96 hours at 125°C case (typical) no yes no FINAL ELECTRICAL TEST MIL-PRF-38534, Group A Subgroups 1 through 6: -55°C, +25°C, +125°C no no yes Subgroups 1 and 4: +25°C case yes yes no HERMETICITY TESTING Fine Leak, Method 1014, Cond. A no yes yes Gross Leak, Method 1014, Cond. C no yes yes Gross Leak, Dip (1 x 10-3) yes no no FINAL VISUAL INSPECTION Method 2009 yes yes yes Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534. *883 products are built with element evaluated components and are 100% tested and guaranteed over the full military temperature range of –55°C to +125°C. ENVIRONMENTAL SCREENING 22021-001-DTS Rev C This revision supercedes all previous releases. 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. MSA Series is a trademark of Interpoint. Copyright © 1994 - 2001 Interpoint Corporation. All rights reserved. Contact Information: Interpoint Headquarters USA Phone: 1-800-822-8782 +425-882-3100 Email: power@intp.com www.interpoint.com Interpoint UK Phone: +44-1252-815511 Email: poweruk@intp.com Interpoint France Phone: +33-134285455 Email: powerfr@intp.com