Hi-Rel DC/DC CONVERTER MGDM-20 : 20W POWER Hi-Rel Grade Single, Bi & Triple Outputs Metallic Case - 1.500 VDC Isolation * 28Vdc input compliant with MIL-STD-704 D/E * Nominal power up to 20 W * Wide temperature range : -40C/+105C case * High efficiency (typ. 84%) * Soft start * Galvanic isolation 1.500 VDC * Integrated LC EMI filter * Permanent short circuit protection * No optocoupler for high reliability * RoHS or Leaded process option 1-General The MGDM-20 series is a complete line of high performance DC/DC power modules designed for aerospace, military and high-end industrial applications. These modules use a high frequency fixed swiching technic at 480 KHz providing excellent reliability, low noise characteristics and high power density. Standard models are available with standard input voltage range of 4.5-5.5, 9-36 and 16-40 volts. The series include single bi and triple output voltage choices of 3,3 , 5, 12, 15 volts. No external heatsink is required for the MGDM20 series to supply 20W output power over the full temperature range. All the modules are designed with LC network filters to minimize reflected input current ripple and output voltage ripple. The modules include a soft-start, an input undervoltage lock-out, a permanent short circuit protection and an output overvoltage protection to ensure efficient module protections. The soft-start allows current limitation and eliminates inrush current during start-up. The short circuit protection completely protects the modules against short-circuits of any duration by a shut-down and restores to normal when the overload is removed. The design has been carried out with surface mount components and is manufactured in a fully automated process to guarantee high quality. Each module is tested with a GAIA Converter automated test equipment.The modules are potted with a bi-component thermal conductive compound and packaged in a metallic case to ensure the module's integrity under high environmental conditions. 2-Product Selection Single output model Bi output model Triple output model : MGDS - 20 : MGDB - 20 : MGDT - 20 - input output input output input output Input Voltage Range Permanent Transient C : 4,5-5,5 VDC H : 9-36 VDC J : 16-40 VDC n/a 40 VDC/100 ms * 50 VDC/100 ms * * Consult factory Options : /T : option for -55C start up operating temperature /S : option for screening and serialization / / / option suffix option suffix option suffix Output B : 3,3 VDC C : 5 VDC or +/-5VDC E : 12 VDC or +/-12VDC F : 15 VDC or +/-15VDC BE : 3,3 VDC and +/-12 VDC BF : 3,3 VDC and +/-15 VDC CE : 5 VDC and +/-12 VDC CF : 5 VDC and +/-15 VDC Suffix : nothing : RoHS process -L : leaded process (available in N. America) REDEFINING THE SOURCE OF POWER (c) Gaia Converter FC98-016.01/11 Revision N For locations, phone, fax, E-Mail see back cover 4 Hi-Rel Grade MGDM-20 Series 2- Product Selection (continued) Input range Output Current Reference 4,5-5,5 4,5-5,5 4,5-5,5 4,5-5,5 3,3 VDC 5 VDC 12 VDC 15 VDC 4A 4A 1,6 A 1,3 A MGDS-20-C-B MGDS-20-C-C MGDS-20-C-E MGDS-20-C-F 2 2 2 2 4A 4A 1,6 A 1,3 A +/- 2A +/- 0,8 A +/- 0,65 A A & +/- 0,4 A & +/- 0,3 A & +/- 0,4 A & +/- 0,3 A A A A MGDS-20-H-B MGDS-20-H-C MGDS-20-H-E MGDS-20-H-F MGDB-20-H-C MGDB-20-H-E MGDB-20-H-F MGDT-20-H-BE MGDT-20-H-BF MGDT-20-H-CE MGDT-20-H-CF 2 2 2 2 4A 4A 1,6 A 1,3 A +/- 2A +/- 0,8 A +/- 0,65 A A & +/- 0,4 A & +/- 0,3 A & +/- 0,4 A & +/- 0,3 A A A A MGDS-20-J-B MGDS-20-J-C MGDS-20-J-E MGDS-20-J-F MGDB-20-J-C MGDB-20-J-E MGDB-20-J-F MGDT-20-J-BE MGDT-20-J-BF MGDT-20-J-CE MGDT-20-J-CF VDC VDC VDC VDC 9-36 9-36 9-36 9-36 9-36 9-36 9-36 9-36 9-36 9-36 9-36 VDC VDC VDC VDC VDC VDC VDC VDC VDC VDC VDC 3,3 VDC 5 VDC 12 VDC 15 VDC +/- 5 VDC +/- 12 VDC +/- 15 VDC 3,3 & +/- 12 VDC 3,3 & +/- 15 VDC 5 & +/- 12 VDC 5 & +/- 15 VDC 16-40 16-40 16-40 16-40 16-40 16-40 16-40 16-40 16-40 16-40 16-40 VDC VDC VDC VDC VDC VDC VDC VDC VDC VDC VDC 3,3 VDC 5 VDC 12 VDC 15 VDC +/- 5 VDC +/- 12 VDC +/- 15 VDC 3,3 & +/- 12 VDC 3,3 & +/- 15 VDC 5 & +/- 12 VDC 5 & +/- 15 VDC Options Suffix /T /T /T /T /T /T /T /T /T /T /T /T /T /T /T , , , , , , , , , , , , , , , /S /S /S /S /S /S /S /S /S /S /S /S /S /S /S -, -, -, -, -L -L -L -L -, -, -, -, -, -, -, -, -, -, -L -L -L -L -L -L -L -L -L -L /T /T /T /T /T /T /T /T /T /T /T , , , , , , , , , , , /S /S /S /S /S /S /S /S /S /S /S -, -, -, -, -, -, -, -, -, -, -, -L -L -L -L -L -L -L -L -L -L -L 4 Converter Selection Chart MGDS - 20 - J - C / T - L Number of Outputs : S : single output B : bi ouput T : triple output Input voltage range : C : 4,5-5,5 VDC H : 9-36 VDC J : 16-40 VDC Output voltage : See table page 1 Option : /T : -55C start up operation /S : screening & serialization (consult application note screening grades) Suffix : nothing : RoHS process -L : Leaded process (available in N. America) (c) Gaia Converter FC98-016.01/11 Revision N 2 For locations, phone, fax, E-Mail see back cover MGDM-20 Series Hi-Rel Grade 3- Electrical Specifications Data are valid at +25C, unless otherwise specified. Parameter Input Nominal input voltage Permanent input voltage range (Ui) Transient input voltage Undervoltage lock-out (UVLO) Start up time Reflected ripple current Input current in short circuit mode (Average) No load input current Conditions Limit or typical Units Full temperature range Nominal Full temperature range Full load (Consult factory) Single Output MGDS-20 20 - C 20 - H 20 - J VDC 5 20 28 Min. - Max. VDC 4,5-5,5 9-36 16-40 Maximum Minimum Maximum VDC/S VDC VDC / 4 4,3 40/0,1 7 8,5 50/0,1 12 15 Maximum ms 40 40 40 Typical mApp 50 50 50 Maximum mA 100 60 60 Maximum mA 100 60 60 Nominal Nominal Nomina Nominall VDC VDC VDC VDC 3,3 5 12 15 3,3 5 12 15 3,3 5 12 15 Maximum % +/- 2 +/- 2 +/- 2 Maximum W 20 20 20 Full temperature range Ui min. to max. Maximum Maximum Maximum Maximum A A A A 4 4 1,6 1,3 4 4 1,6 1,3 4 4 1,6 1,3 Ui nominal Full load BW = 20MHz Maximum Maximum Maximum mVpp mVpp mVpp 40 50 60 40 50 60 40 50 60 Typical % +/- 1 +/- 1 +/- 1 Typical % +/- 2,5 +/- 2,5 +/- 2,5 Typical % Maximum Maximum F F Turn-on/turn-off threshold Ui nominal Nominal output Full load : resistive Ui nominal, full load at switching freq. BW = 20MHz Ui nominal Short-circuit Ui nominal No load Output Output voltage * Set Point accuracy Output power Output current ** 3,3V output 5V output 12V output 15V output Ripple output voltage *** 3,3V and 5V output 12V output 15V output Line regulation Load regulation **** Efficiency Maximum admissible Capacitive load 3,3V and 5V output 12V and 15V output Full temperature range Ui min. to max. 75% load Ambient temperature : 25c Ui nominal, 75% load Full temperature range Ui min. to max. Ui min. to max. Full load Ui nominal 25% to full load Ui nominal Full load Ui nominal Full load Per output 4 See on page 6 2.000 680 2.000 680 2.000 680 Note * : For proper operation the MGDM-20 module requires to install a 22F chemical or tantalum capacitor accross output terminal. Note ** : For 9-36V input range, the current is derated at 80% at 9V and increases linearly to full current at 12V. Note*** : The ripple output voltage is the periodic AC component imposed on the output voltage, an aperiodic and random component (noise) has also to be considered. This noise can be reduced by adding an external capacitor (typically 10nF/rated voltage depending on isolation requirement) connected between the pin Gin and the pin Gout of the converter.This capacitor should be layed-out as close as possible from the converter. Note **** : For load regulation characteristics from 0% to full load, please see page 6. (c) Gaia Converter FC98-016.01/11 Revision N 3 For locations, phone, fax, E-Mail see back cover MGDM-20 Series Hi-Rel Grade 3- Electrical Characteristics (continued) Data are valid at +25C, unless otherwise specified. Parameter Input Nominal input voltage Permanent input voltage range (Ui) Transient input voltage Undervoltage lock-out (UVLO) Start up time Reflected ripple current Input current in short circuit mode (Average) No load input current Conditions Limit or typical Units Full temperature range Nominal Full temperature range Full load (Consult factory) Bi Output MGDB-20 20 - H 20 - J VDC 20 28 Min. - Max. VDC 9-36 16-40 Maximum Minimum Maximum VDC/S VDC VDC 40/0,1 7 8,5 50/0,1 12 15 ms 40 40 mApp 50 50 mA 60 60 mA 60 60 Nominal Nominal Nominal VDC VDC VDC +/- 5 +/- 12 +/- 15 +/- 5 +/- 12 +/- 15 Maximum % +/- 2 +/- 2 Maximum W +/- 10 +/- 10 Full temperature range Ui min. to max. Maximum Maximum Maximum A A A +/- 2 +/- 0,80 +/- 0,65 +/- 2 +/- 0,80 +/- 0,65 Ui nominal Full load BW = 20MHz Maximum Maximum Maximum mVpp mVpp mVpp 40 50 60 40 50 60 Typical % +/- 1 +/- 1 Typical % +/- 2,5 +/- 2,5 Typical % +/- 0,5 +/- 0,5 Typical % Maximum Maximum F F Turn-on/turn-off threshold Ui nominal Nominal output Maximum Full load : resistive Ui nominal, full load at switching Typical freq. BW = 20MHz Ui nominal Maximum Short-circuit Ui nominal Maximum No load Output Output voltage * Set Point accuracy Output power Output current ** +/- 5V output +/- 12V output +/- 15V output Ripple output voltage *** 5V output 12V output 15V output Line regulation Load regulation **** Cross load output regulation Full temperature range Ui min. to max. 75% load Ambient temperature : +25c Ui nominal, 75% load Full temperature range Ui min. to max. Ui min. to max. Full load Ui nominal 25% to full load Ui nominal + Vout nominal load - Vout from 25% to full load Efficiency Ui nominal Full load Maximum admissible Capacitive load 5V output 12V and 15V output Ui nominal Full load Per output 4 See on page 6 1.000 330 1.000 330 Note * : For proper operation the MGDM-20 module requires to install a 22F chemical or tantalum capacitor accross output terminal. Note ** : For 9-36V input range, the current is derated at 80% at 9V and increases linearly to full current at 12V. Note*** : The ripple output voltage is the periodic AC component imposed on the output voltage, an aperiodic and random component (noise) has also to be considered. This noise can be reduced by adding an external capacitor (typically 10nF/rated voltage depending on isolation requirement) connected between the pin Gin and the pin Gout of the converter.This capacitor should be layed-out as close as possible from the converter. Note **** : For load regulation characteristics from 0% to full load, please see page 6. (c) Gaia Converter FC98-016.01/11 Revision N 4 For locations, phone, fax, E-Mail see back cover MGDM-20 Series Hi-Rel Grade 3- Electrical Characteristics (continued) Data are valid at +25C, unless otherwise specified. Parameter Input Nominal input voltage Permanent input voltage range (Ui) Transient input voltage Undervoltage lock-out (UVLO) Start up time Reflected ripple current Input current in short circuit mode (Average) No load input current Conditions Limit or typical Units Full temperature range Nominal Full temperature range Full load Tri Output MGDT-20 20 - H 20 - J VDC 20 28 Min. - Max. VDC 9-36 16-40 Maximum Minimum Maximum VDC/S VDC VDC 40/0,1 7 8,5 50/0,1 12 15 Maximum ms 40 40 Typical mApp 50 50 Maximum mA 60 60 Maximum mA 60 60 Nominal Nominal Nominal Nominal VDC VDC VDC VDC 3,3 & +/- 12 3,3 & +/- 15 5 & +/- 12 5 & +/- 15 3,3 & +/- 12 3,3 & +/- 15 5 & +/- 12 5 & +/- 15 Maximum % +/- 2 +/- 2 Maximum W 10 & +/- 5 10 & +/- 5 Full temperature range Ui min. to max. Maximum Maximum Maximum Maximum A A A A 2 & +/- 0,4 2 & +/- 0,3 2 & +/- 0,4 2 & +/- 0,3 2 & +/- 0,4 2 & +/- 0,3 2 & +/- 0,4 2 & +/- 0,3 Ui nominal Full load BW = 20MHz Maximum Maximum Maximum mVpp mVpp mVpp 40 50 60 40 50 60 Typical % +/- 1 +/- 1 Typical % +/- 2,5 +/- 2,5 Typical % +/- 0,5 +/- 0,5 Typical % see on page 6 see on page 6 Maximum Maximum F F 1.000 100 1.000 100 Turn-on/turn-off threshold Ui nominal Nominal output Full load : resistive Ui nominal, full load at switching freq. BW = 20MHz Ui nominal Short-circuit Ui nominal No load Output Output voltage * Set Point accuracy Output power Output current ** 3,3V & +/- 12V output 3,3V & +/- 15V output 5V & +/- 12V output 5V & +/- 15V output Ripple output voltage *** 3,3V and 5V output 12V output 15V output Line regulation Load regulation **** Cross load output regulation Efficiency Maximum admissible Capacitive load 3,3V and 5V output 12V and 15V output Full temperature range Ui min. to max. 75% load Ambient temperature : +25c Ui nominal, 75% load Full temperature range Ui min. to max. Ui min. to max. Full load Ui nominal 25% to full load Ui nominal + Vout nominal load - Vout from 25% to full load Ui nominal Full load Ui nominal Full load Per output 4 Note * : For proper operation the MGDM-20 module requires to install a 22F chemical or tantalum capacitor accross output terminal. Note ** : For 9-36V input range, the current is derated at 80% at 9V and increases linearly to full current at 12V. Note*** : The ripple output voltage is the periodic AC component imposed on the output voltage, an aperiodic and random component (noise) has also to be considered. This noise can be reduced by adding an external capacitor (typically 10nF/rated voltage depending on isolation requirement) connected between the pin Gin and the pin Gout of the converter.This capacitor should be layed-out as close as possible from the converter. Note **** : For load regulation characteristics from 0% to full load, please see page 6. (c) Gaia Converter FC98-016.01/11 Revision N 5 For locations, phone, fax, E-Mail see back cover Hi-Rel Grade MGDM-20 Series 3- Electrical Characteristics (continued) Figure 2 : Typical efficiency versus load at nominal input 83 74 83 80 72 82 77 70 input 5V 68 80 input 5V 79 78 3.3 6.6 9.9 Output Power (W) 71 68 5 (MGDS-20-C-B module) 10 15 Output Power (W) 20 5 85 88 80 82 85 74 input 28V 71 79 input 40V 76 input 28V 73 input 16V input 16V 68 Efficiency (%) input 40V 70 65 10 15 Output Power (W) 20 10 15 Output Power (W) Figure 7 : Typical efficiency versus load at various input 82 input 40V 79 20 Figure 8 : Typical efficiency versus load at various input 85 79 input 28V 76 input 16V Efficiency (%) 83 Efficiency (%) 85 input 28V 77 input 16V 74 71 70 15 Output Power (W) 20 10 Output Power (W) (MGDS-20-J-F module) Figure 10 : Typical load regulation characteristics at nominal input 13,4 5,6 13,2 Output voltage (VDC) 13,6 5,7 5,4 5,3 5,2 5,1 1,50 2,00 2,50 Output Current (A) (c) Gaia Converter FC98-016.01/11 Revision N 3,00 3,50 4,00 (MGDS-20-J-C module) 15 20 (MGDB-20-J-F module) Figure 12 : Typical load regulation characteristics at nominal input 16 12,4 12,2 4,9 10 16,2 12,6 12 1,00 5 Output Power (W) (MGDT-20-J-CE module) 12,8 11,8 0,50 20 13 5 0,00 input 28V input 16V Figure 11 : Typical load regulation characteristics at nominal input 5,8 5,5 15 4 input 40V 76 70 5 Output voltage (VDC) 10 79 73 68 5 20 (MGDS-20-J-E module) 82 input 40V 73 15 Figure 9 : Typical efficiency versus load at various input 88 80 10 Output Power (W) 86 input 40V input 16V 5 (MGDS-20-J-C module) 88 82 input 28V 76 70 5 (MGDS-20-J-B module) 20 (MGDS-20-C-E module) 73 67 5 15 Figure 6 : Typical efficiency versus load at nominal input 83 77 10 Output Power (W) (MGDS-20-C-C module) Figure 5 : Typical efficiency versus load at nominal input Efficiency (%) Efficiency (%) input 5V 74 65 13.2 Figure 4 : Typical efficiency versus load at nominal input Efficiency (%) Efficiency (%) 84 66 Output voltage (VDC) Figure 3 : Typical efficiency versus load at nominal input 76 Efficiency (%) Efficiency (%) Figure 1 : Typical efficiency versus load at nominal input 15,8 15,6 15,4 15,2 15 14,8 0,00 0,20 0,40 0,60 0,80 1,00 1,20 1,40 1,60 1,80 Output Current (A) (MGDS-20-J-E module) 0,00 0,20 0,40 Output Current (A) 0,60 0,80 1,00 1,20 1,40 (MGDS-20-J-F module) 6 For locations, phone, fax, E-Mail see back cover Hi-Rel Grade MGDM-20 Series 4- Switching Frequency Parameter Conditions Limit or typical Specifications Switching frequency Full temperature range Ui min. to max. No load to full load Nominal, fixed 480 KHz Parameter Conditions Limit or typical Specifications Electric strength test voltage Input to output Minimum 1.500 VDC / 1 min Electric strength test voltage between outputs (for dual and triple outputs) Output to output Minimum No isolation Isolation resistance 500 VDC Minimum 100 MOhm 5- Isolation 6- Protection Functions Characteristics Protection Device Recovery Limit or typical Specifications Input undervoltage lock-out (UVLO) Turn-on, turn-off circuit with no hysteresis Automatic recovery Threshold See section 3 Output short circuit protection (SCP) Hiccup circuitry with auto-recovery Automatic recovery Permanent See section 11 Output overvoltage protection (OVP) Zener clamp / Maximum Maximum Maximum Maximum For 3.3v : 4v For 5v : 6v For 12v : 14v For 15v : 17v 4 7- Reliability Data Characteristics Mean Time Between Failure (MTBF) According to MIL-HDBK-217F Mean Time Between Failure (MTBF) According to IEC-62380-TR (c) Gaia Converter FC98-016.01/11 Revision N Conditions Temperature Specifications Ground fixed (Gf) Case at 40C Case at 85C 750.000 Hrs 320.000 Hrs Airborne, Inhabited, Cargo (AIC) Case at 40C Case at 85C 270.000 Hrs 105.000 Hrs Avionics Military Cargo / Consult factory 7 For locations, phone, fax, E-Mail see back cover MGDM-20 Series Hi-Rel Grade 8- Electromagnetic Interference Electromagnetic Interference requirements according to MIL-STD-461C/D/E standards can be easily achieved as indicated in the following section. The following table resumes the different sections covered by these standards. MIL-STD-461C Standard MIL-STD-461D/E Standard Conducted emission (CE) : Low frequency High frequency CE 01 CE 03 CE 101 CE 102 compliant module stand-alone compliant with additionnal filter Conducted susceptibility (CS) : Low frequency High frequency CS 01 CS 02 CS 101 CS114 compliant with additionnal filter compliant with additionnal filter Radiated emission (RE) : Magnetic field Electrical field RE 01 RE 02 RE 101 RE 102 compliant module stand-alone compliant module stand-alone Radiated susceptibility (RS) : Magnetic field Electrical field RS 01 RS 03 RS 101 RS 103 compliant module stand-alone compliant module stand-alone Standard Requirements Compliance with GAIA Converter Module & common mode capacitance 4 8-1 Module Compliance with MIL-STD-461C/D/E Standards To meet the latest US military standards MIL-STD-461D/E (and also the MIL-STD-461C) requirements and in particular the conducted noise emission CE102 (and also CE03) requirements, Gaia Converter can propose a stand-alone ready-to-use EMI filter module. This EMI filter module has to be used together with a common mode noise capacitance C c (10nF/rated voltage depending on isolation requirement) connected between Gin and Gout. EMI Filter module reference : FGDS-2A-50V. Please consult EMI filter datasheet for further details. VI Vo EMI input Filter GI Go Vo VI MGDM-series GI Go Cc (c) Gaia Converter FC98-016.01/11 Revision N 8 For locations, phone, fax, E-Mail see back cover MGDM-20 Series Hi-Rel Grade 9- Thermal Characteristics Conditions Limit or typical Performances Operating ambient temperature range at full load Characteristics Ambient temperature * Minimum Maximum - 40C + 85C Operating case temperature range at full load Case temperature Minimum Maximum - 40C + 105C Storage temperature range Non functionning Minimum Maximum - 55C + 125C Thermal resistance Rth case to ambient in free air natural convection Typical 7C /W Note * : The upper temperature range depends on configuration, the user must assure a max. case temperature of + 105C. The MGDM-20 series operating case temperature must not exceed 105C. The maximum ambient temperature admissible for the DC/DC converter corresponding to the maximum operating case temperature of 105C depends on the ambient airflow, the mounting/orientation, the cooling features and the power dissipated. To calculate a maximum admissible ambient temperature the following method can be used. Knowing the maximum case temparature Tcase = 105C of the module, the power used Pout and the efficiency : * determine the power dissipated by the module Pdiss that should be evacuated : - 1) Pdiss = Pout(1/ * determine the maximum ambient temperature : Ta = 105C - Rth x Pdiss where Rth is the thermal resistance from the case to ambient. 4 The previous thermal calculation shows two areas of operation : * a normal operation area in a free natural ambient convection (grey area in this following graph), * an area with cooling features (air flow or heatsink) ensuring a maximum case temperature below the maximum operating case temperature of 105C (white area in the following graph). Power (W) 100% Additionnal cooling operation area 75% 50% Natural convection operation area 25% 10 20 30 40 50 60 70 80 90 100 110 Temperature (C) Full load ambient temperature without derating : 85C Maximum case temperature : 105C Maximum storage temperature : 125C (c) Gaia Converter FC98-016.01/11 Revision N 9 For locations, phone, fax, E-Mail see back cover MGDM-20 Series Hi-Rel Grade 10- Environmental Qualifications The modules have been subjected to the following environmental qualifications. Characteristics Conditions Severity Test procedure Duration Temperature / status of unit Test D : 1.000 Hrs @ 105C case, unit operating @ 125C ambient, unit not operating MIL-STD-202G Method 108A Altitude Altitude level C Duration Climb up Stabilization Status of unit 40.000 ft@-55C 30 min. 1.000 ft/min to 70.000 f@-55C, 30 min. unit operating MIL-STD-810E Method 500.3 Humidity cyclic Number of cycle Cycle duration Relative humidity variation Temperature variation Status of unit 10 Cycle I : 24 Hrs 60 % to 88 % 31C to 41C unit not operating MIL-STD-810E Method 507.3 Humidity steady Damp heat Temperature Duration Status of unit 93 % relative humidity 40C 56 days unit not operating MIL-STD-202G Method 103B Salt atmosphere Temperature Concentration NaCl Duration Status of unit 35C 5% 48 Hrs unit not operating MIL-STD-810E Method 509.3 Temperature cycling Number of cycles Temperature change Transfert time Steady state time Status of unit 200 -40C / +85C 40 min. 20 min. unit operating MIL-STD-202A Method 102A Temperature shock Number of shocks Temperature change Transfert time Steady state time Status of unit 100 -55C / +105C 10 sec. 20 min. unit not operating MIL-STD-202G Method 107G Climatic Qualifications Life at high temperature 4 Mechanical Qualifications Vibration (Sinusoidal) Number of cycles Frequency / amplitude Frequency / acceleration Duration Status of unit 10 cycles in each axis 10 to 60 Hz / 0.7 mm 60 to 2000 Hz / 10 g 2h 30 min. per axis unit not operating MIL-STD-810D Method 514.3 Shock (Half sinus) Number of shocks Peak acceleration Duration Shock form Status of unit 3 shocks in each axis 100 g 6 ms 1/2 sinusoidal unit not operating MIL-STD-810D Method 516.3 Bump (Half sinus) Number of bumps Peak acceleration Duration Status of unit 2000 bumps in each axis 40 g 6 ms unit not operating MIL-STD-810D Method 516.3 (c) Gaia Converter FC98-016.01/11 Revision N 10 For locations, phone, fax, E-Mail see back cover Hi-Rel Grade MGDM-20 Series 11- Description of Protections 11-1 Input Undervoltage Lock-out (UVLO) The input undervoltage lock-out protection device turnson and turns-off the output voltage when the input bus voltage reaches the undervoltage lock-out threshold. There is no hysteresis cycle at turn-on and turn-off. On Off UVLO Turn-on/Turn-off Vin 11-2 Output Short Circuit Protection (SCP) The short circuit protection device protects the module against short circuit of any duration and restores the module to normal operation when the short circuit is removed. It operates in hiccup mode by testing periodically if an overload is applied (typically every 200ms recovery time). The overload detection threshold is typically 200% of maximum current and typically 300% of maximum current for `C' input range series with a detection time lower than 5ms. Vo (%) 100 detection time x time recovery time recovery time 11-3 Output Overvoltage Protection (OVP) 4 The output overvoltage protection device protects external components against high voltage or possible overvoltages which can be supplied by the module (i.e in case of internal failure). It consists of a zener diode clamping the output voltage; under worst case conditions this zener diode will short-circuit. The output voltage protection is not designed to withstand externally applied output overvoltages to protect the module itself. 12- Description of Functions 12-1 On/Off Function The control pin 4 (On/Off) can be used for applications requiring On/Off operation. By using an open collector command with a transistor Q referenced to the common terminal (Gi) : * A logic pulled low (<0.2V@1mA, referenced to Gi) on pin 4 disables the converter * No connection or high impedance on pin 4 enables the converter. On/Off Command By releasing the On/Off function, the converter will restart within the start-up time specifications given in table page 3. For further details please consult `'Logic On/Off'' Application Note. (c) Gaia Converter FC98-016.01/11 Revision N GI 11 For locations, phone, fax, E-Mail see back cover MGDM-20 Series Hi-Rel Grade 13- Application Notes 13-1 Connection of Outputs in Series Any of the bi output converters can be configured to produce an output of 10V (+/-5 output models), 24V (+/-12V output models), or 30V (+/-15V output models) by connecting the load across the output (+) and the output (-) with either output grounded, and leaving the common pin floating. VI +Vo Go GI -Vo VI Vo GI Go 2 x Vo 13-2 Connection of Modules in Series The output of single output units can be connected in series without any precautions to provide higher output voltage level. Nevertheless, GAIA Converter recommends to protect each individual output by a low power shottky diode rated with the maximum current of the converter to avoid reverse polarity at any output. Reverse polarity may occur at start up if the output voltages do not rise at the same time. 2 x Vo VI Vo 4 GI Go VI Vo 13-3 Connection of Modules in Parallel Several converters with equal output voltage can be connected in parallel to increase power. Nevertheless some cares have to be taken in particular as the output voltage of each converter is slightly different, when paralleling, the converter with the highest output voltage will source the most current. However the GAIA Converter modules are designed with a "soft'' output voltage versus current characteristic. This causes the output voltage of each converter to automatically adjust downward as its current increases so each converter very approximately shares the total output current. It is important that each converter has approximately the same impedance between their output and the common load. (c) Gaia Converter FC98-016.01/11 Revision N Vo GI Go VI Vo GI Go 12 For locations, phone, fax, E-Mail see back cover Hi-Rel Grade MGDM-20 Series 14- Dimensions Dimension are given in mm (inches). Tolerance : +/- 0,2 mm (+/- 0.01 ") unless otherwise indicated. Weight : 80 grams (2.8 Ozs) max. 12,70 (0.50") 2,54 (0.10") 5,08 5,08 5,08 (0.20")(0.20")(0.20") 12,70 45,72 (1.80") 10,16 (0.40") 50,80 10,16 (0.40") (2.00") 10,16 (0.40") +/-0,8 4+/-1 (0.15") (0.50") 50,80 Pin dimensions : O 0,83 mm (0.033 ") (2.00") 4 15- Materials Case : Metallic black painted coating. Pins : Plated with pure matte tin over nickel underplate. 16- Product Marking Upper face : Company logo, location of manufacturing. Side face : Module reference : MGDx-20-X-Y. Date code : year and week of manufacturing, suffix, /option. 17- Connections 5 6 7 1 2 8 3 4 Pin Single Bi Triple 1 + Input (Vi) + Input (Vi) + Input (Vi) 2 - Input (Gi) - Input (Gi) - Input (Gi) 3 Case Case Case 4 On / Off On / Off On / Off 5 Do not connect Output + (+Vo) Output 2+ (+V2) 6 Output (Vo) Common (Go) Output 1 (V1) 7 Common (Go) Output - (-Vo) Common (Go) 8 Do not connect Do not connect Output 2- (-V2) Bottom view (c) Gaia Converter FC98-016.01/11 Revision N 13 For locations, phone, fax, E-Mail see back cover International Headquarters GAIA Converter - France ZI de la Morandiere 33185 LE HAILLAN - FRANCE Tel. : + (33)-5-57-92-12-80 Fax : + (33)-5-57-92-12-89 North American Headquarters GAIA Converter Canada, Inc 4038 Le Corbusier Blvd LAVAL, QUEBEC - CANADA H7L 5R2 Tel. : (514)-333-3169 Fax : (514)-333-4519 Represented by : Information given in this datasheet is believed to be accurate and reliable. However, no responsibility is assumed for the consequence of its use nor for any infringement of patents or other rights of third parties which may result from its use. These products are sold only according to GAIA Converter general conditions of sale, unless otherwise confirmed by writing. Specifications subject to change without notice. Printed in France by GAIA Converter FC97-008.01/11 Revision N Graphisme : Philippe Clicq For more detailed specifications and applications information, contact :