Lambda Vega Series, Applications Manual

Page 1: ...Applications Manual Vega Series Power Supply 3055 Del Sol Blvd San Diego CA 92154 Phone 619 575 4400 Fax 619 429 1011 Rev A3 Date October 2003...

Page 2: ...alogue Primary Options 8 Section 3 Analogue Secondary options 11 Section 4 Output Ripple and Noise 18 Section 5 Fans and Cooling 20 Section 6 Vega Outline Drawings 21 Section 7 MTBF to MIL217F 27 Sect...

Page 3: ...de using insulated 6 35mm faston connectors rated at 15amps each Wire Size awg AMP termination Colour 22 18 2 520407 2 RED 16 14 3 520408 2 BLUE A moulded connector housing is also available which acc...

Page 4: ...les This is likely to cause noise pickup which result either in generally high levels of noise on the system power rails or worse random system errors which can be very hard to trace and solve and poo...

Page 5: ...MP faston 2 520407 2 red 1 0 18 17 1 5 16 21 AMP faston 3 520408 2 blue 2 5 14 30 4 12 41 AMP faston 280223 2 6 10 53 USE AMP ringtag 130191 and specify screw terminals 10 8 75 USE AMP ringtag 130552...

Page 6: ...h a secondary option R specified In both cases the Molex connector viewed from the back of the power supply is Remote sense can be used to compensate for the drop in voltage along the load cables or f...

Page 7: ...1 Connection Rev A3 October 2003 Page 7 of 48 Mating connector information Note housing and pins supplied with each power supply Housing Molex 50 37 5023 Crimp pin Molex 08 70 1039 Hand Crimp Tool 690...

Page 8: ...iary supply 5 Global inhibit enable logic 0 input 6 Global inhibit enable logic 1 input INHIBIT OR ENABLE One of two options are available required option must be specified at time of ordering Inhibit...

Page 9: ...on Current limited and thermally protected Hold up time 1 Sec minimum Isolation to earth 500V DC max Or ENABLE Either INHIBIT Global Inhibit Logic 0 Pin 5 to be taken to 0 0 8V to turn outputs off oth...

Page 10: ...can be configured in two ways Either Or PIN 1 PIN 2 This provides an opto isolated output which provides a minimum of 5mS warning before loss of output power due to either loss of AC input or over te...

Page 11: ...redundant applications to force paralleled modules to share the load current or can be used to parallel 2 or more modules to increase the available output current N option for SINGLE One and a Half an...

Page 12: ...may be up to 0 6V remaining at the outputs of the module Mating connector information Note housing and pins supplied with each power supply Housing Molex 50 37 5063 Crimp pin Molex 08 70 1039 Hand Cri...

Page 13: ...The transistor is ON saturated when module is GOOD Low when module good High when module good Module good C Collector Module good E Emitter Module is GOOD when output voltage is between 90 5 and 110...

Page 14: ...linked internally in the module Functionally the shared parallel connection forces each module of a pair to drive approximately the same current Whichever module is driving the least current has it s...

Page 15: ...pal can be extended further to hot swap This allows a failed power supply to be removed and replaced with the system fully live and driving the full load current Normally a Vega power supply would be...

Page 16: ...e system will always remain functional Not shown are the L N and Earth connections It is important when designing with connectors for hot swap applications that that EARTH is made first and broken las...

Page 17: ...to achieve remote sensing There is one 2 pin connector for each output The connector for that output is directly adjacent to the faston output terminals for that output When connecting the remote sens...

Page 18: ...apacitor The earth wire of the oscilloscope probe should be as short as possible winding link wire around the earth collar of the probe is the preffered method Noise from a switching power supply is m...

Page 19: ...the wiring cables 4 Faulty wiring connection or bad terminations 5 PCB tracking or cabling insufficient for peak currents carried 6 Power supply being intermittently overloaded High switching current...

Page 20: ...hausted Always design a system so that the coolest possible air is routed to the intake of the power supply Try and avoid using re circulated air by having highly enclosed boxes with the exhaust in th...

Page 21: ...Vega Customer Applications Manual Section 6 Vega Outline Drawings Rev A3 October 2003 Page 21 of 48 Section 6 Vega Outline Drawings...

Page 22: ...Vega Customer Applications Manual Section 6 Vega Outline Drawings Rev A3 October 2003 Page 22 of 48...

Page 23: ...Vega Customer Applications Manual Section 6 Vega Outline Drawings Rev A3 October 2003 Page 23 of 48...

Page 24: ...Vega Customer Applications Manual Section 6 Vega Outline Drawings Rev A3 October 2003 Page 24 of 48...

Page 25: ...Vega Customer Applications Manual Section 6 Vega Outline Drawings Rev A3 October 2003 Page 25 of 48...

Page 26: ...Vega Customer Applications Manual Section 6 Vega Outline Drawings Rev A3 October 2003 Page 26 of 48...

Page 27: ...ule starting with D one and a half slot 1 36 1 75 2 14 2 52 Any module starting with E dual slot 1 36 1 75 2 14 2 52 Any module starting with H twin 1 88 2 34 2 8 3 23 Any module starting with L Singl...

Page 28: ...lock MYB1210 33 MYB1220 33 Faston MAF1210 33 MAF1215 33 Narrow band Pulse noise High attenuation Stud MAS1210 33 MAS1215 33 2 Enclosure in a metal rack with suitable EMC gaskets Technical support can...

Page 29: ...the mains supply Current is drawn sinusoidally rather than in sudden burst at the peak of each mains cycle as it would be if simple rectification was used The boost converter and bulk capacitors provi...

Page 30: ...The level of protection is as described in the EN61000 4 5 specification Output Efficiency The efficiency is a function of output voltage load and input voltage Efficiency is worse at lower loads and...

Page 31: ...Check the specification for each module for the actual value In an overcurrent condition the current is very approximately constant current ie when the current limit is reached the output voltage redu...

Page 32: ...5slot and 2slot modules the output current of the two combined modules is the same as the current of one of the modules only this applies to Imax Ishortcircuit Imin and Inominal For twin modules the o...

Page 33: ...10 16 2 18 C3 module 2 9 1 10 16 2 18 Combination 18 2 20 32 4 18 C3 is a single module and the combination will have a bussbar fitted at manufacture to combine the voltages see pictures The module de...

Page 34: ...slot D5 module with voltages combined 2 x D5 modules can be combined to provide 48V nominal at 15Amps Vmin Vnom Vmax Imax D5 module 1 21 24 28 15 D5 module 2 21 24 28 15 Combination 42 48 54 15 D5 is...

Page 35: ...ame How done Vmin Vmax Imax Slots Power Vmin Power Vmax EE2 E2 E2 7 6 16 55 4 418 880 CC3 C3 C3 18 2 32 4 18 2 327 6 583 2 HH5 3 Both halves of H5 3 25 3 47 2 5 1 126 5 236 BB4 B4 B4 32 6 43 10 2 326...

Page 36: ...lex with S and S pins Connect the S from the molex on this module to the ve side of the load SENSE SENSE Ensure that the remote sense cables are TWISTED PAIRS PCB tracks for remote sense should be run...

Page 37: ...ule with faston connections would be 24 24H5 4F as standard To specify it with remote sense it would become 24 24h5 4FR added R suffix When a twin output module is specified to have it s output combin...

Page 38: ...he next module connects to the V of the previous module You cannot series modules to any higher than 60V without exceeding the limits for SELV Safe Extra Low Voltage If voltages higher than 60V are re...

Page 39: ...he N option is available on 1slot 1 5slot and 2slot combination modules When the N option is specified for a combination module each module will have it s own option board fitted The available functio...

Page 40: ...s follows for of the two molex connectors on the twin slot module Pin No Function 1 Module inhibit VE 2 Module inhibit VE 3 Module good E 4 Module good C 5 VE sense 6 VE sense PIN 6 PIN 1 Mating conne...

Page 41: ...Vega Customer Applications Manual Section 10 Combining Modules Rev A3 October 2003 Page 41 of 48 The available functions when the option is fitted are Module Good Module Inhibit Remote Sense...

Page 42: ...tors together in series so that both transistors will be ON when the module combination is good Both transistors ON Module combination GOOD On or other or both transistors OFF Module combination BAD L...

Page 43: ...mage may result Current draw at 5V is approx 10mA The 390ohm resistor is fitted internally to the module and is there so that no external resistor is required if the drive is from 5V It is also possib...

Page 44: ...sistive programming enable h R4 0 32k resistive programming current programming enable 2 2 Options brief description a Subscript V voltage programming a 0 5 volt input from an external DC source conne...

Page 45: ...sistive programming enable h R4 0 32k resistive programming current programming enable 4 2 Options brief description d Subscript V voltage programming a 0 5 volt input from an external DC source conne...

Page 46: ...be used to drive the circuit in which case additional series resistor should be used to limit the current A current of 1 10mA will inhibit the module Ensure 13mA is not exceeded Pin 1 2 3 Return circ...

Page 47: ...itive and negative outputs Run the remote sense and power connections as separate pairs avoiding close parallel runs and only coming together at the load The load should be de coupled with 10uF of cap...

Page 48: ...e sense cables are twisted pairs b PCB tracks for remote sense should be run back to back c Ensure that the remote sense cables tracks are as short as possible d Ensure that the sense cables are not t...