VICOR DC MegaPAC User Manual Download

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UG:123

Page 18

Temperature Derating

Figure 10

Temperature Derating for

MegaPACs™ using 5V Current

Generation ConverterPACs™

(See Curves Below for Non 5V

ConverterPAC Configurations)

Figure 11

Temperature Derating for

MegaPACs using 5V Current

Generation ConverterPACs

(See Curves Above for 5V

ConverterPAC Configurations)

Summary of Contents for DC MegaPAC

Page 1: ...i e more power or a different output voltage is needed upgrading is easy simply unlock a single screw and replace the slide in ModuPAC assembly with one that has the desired rating For additional flexibility ModuPACs can be connected in parallel to increase output power booster ModuPACs or in series for higher voltages The driver is to the left of the boosters when looking at the output end of the...

Page 2: ...ews The chassis comes with four mounting points on each surface maximum allowable torque is 20lb in The maximum penetration is 0 15in 3 8mm When selecting a mounting location and orientation the unit should be positioned so airflow is not restricted Maintain a 2in 5 1cm minimum clearance at both ends of the DC MegaPAC and route all cables so airflow is not obstructed The standard unit draws air in...

Page 3: ...ctors The input current is passed through an EMI filter designed to meet conducted British Telecom specifications At start up inrush current is limited by a thermistor The thermistor is shunted out shortly after initial power up by a relay driven by a DC bus voltage sense circuit The DC voltage is then fed to the backplane The backplane supplies power to a variety of ConverterPAC assemblies that p...

Page 4: ...ilar manner If driven from an electromechanical switch or relay a capacitor should be connected to eliminate the effects of switch bounce There is no ride through hold up time available with the DC MegaPAC Figure 1 DC MegaPAC Architecture EMI Filter Under Over Reverse Voltage Protection Inrush Current Limiting Logic Power Supply Housekeeping Circuits DC Fan DC Bus Sense Customer Interface Opto iso...

Page 5: ...ated load An optional output voltage trim potentiometer can be specified DC Power Good signal is not available The DualPAC contains overcurrent protection which recovers automatically when the overcurrent condition is removed Overvoltage and overtemperature protection are not available JuniorPAC The JuniorPAC consists of one VI J00 DC DC converter that converts the high voltage bus to the desired ...

Page 6: ...S LS PG TrimPot ModuPAC Std Std Std Std Opt Opt Opt DualPAC N A Std N A Std Opt N A Opt JuniorPAC N A Std N A Std Opt Opt Opt RamPAC N A Std N A Std Opt Opt Opt OVP Overvoltage Protection latching OCP Overcurrent Protection auto recovery OTP Overtemperature Limiting latching RS Remote Sense PG Power Good DC OK LS Local Sense Installing ConverterPACs as Drivers ConverterPACs can be installed in emp...

Page 7: ...randed wire Use Molex tool 11 01 0208 1 2 3 Sense Connector 1 Trim Pin Access 2 Sense 3 Sense Pin J2 VOUT VOUT DC DC 45 11 4mm 5 10 129 5mm 6 75 171 4mm 11 68 296 7mm CONNECTIONS J9 INPUT POWER SIGNALS J10 STATUS CONTROL OUTPUT OUTPUT NORMAL AIR FLOW 2 92 74 2mm RETURN 62 15 7mm 6 04 153 4mm 3 38 85 6mm 4 MOUNTING HOLES EACH SURFACE M4 8 32 15 3 8mm MAX PENETRATION TOP 22 5 6mm 1 0 25 4mm 1 85 47m...

Page 8: ... range 4 72VDC input 55 100V range xD Voltage out xE Current out rounded to 1 decimal point xF Options See below Can be multiple options ConverterPAC options B Booster module M M Grade module D DC OK or Power Good N A on DualPAC R RAM external F Full 50 110 output adjustment S Trimpot removed for external BatPAC adjustment F1 50 107 5 output adjustment T 90 110 output adjustment F2 50 105 output a...

Page 9: ...rdered An L in the ConverterPAC part number means the Local Sense option has been installed e g M5V 40AL Use Molex mating receptacle 50 57 9403 with 16 02 0103 terminals provided n n J2 2 is the Sense and J2 3 is the Sense n n Attach terminals to 22 24AWG twisted pair wire using Molex tool 11 01 0208 n n Attach opposite ends of Sense lines to point where regulation is desired n n Verify that Sense...

Page 10: ...J10 n n Use 25 pin D sub connector provided n n J10 8 to 11 and J10 21 to 24 are Enable Disable for slots 1 8 n n J10 16 17 are VCC J10 12 and 15 are Signal Ground J10 18 is AC Power OK and J10 5 is General Shutdown DC OK Power Good 4 3 2 1 J3 J3 4 VCC J3 3 Power Good J3 2 Power Good Inverted J3 1 Signal Ground Pin Input Connections J9 Sense Connector 1 2 3 1 Trim Pin Access 2 Sense 3 Sense Pin J2...

Page 11: ...tud is positive with respect to the lower stud For dual output ConverterPACs there is a six pin Molex connector for each output J1A pins 1 and 4 are the Output and J1A pins 2 and 5 are the Output Pins 3 and 6 are duplicates of the Remote Sense terminals present on J2A and J2B Use appropriate wire size rated to handle the full output current including short circuit levels Avoid large current loops ...

Page 12: ...outputs are to be enabled Do not apply more than 6V to this input at any time Normal open circuit voltage is 1 5 3V with respect to Signal Ground If driven from an electromechanical switch or relay a capacitor should be connected to eliminate the effects of switch bounce J10 INTERFACE CONNECTOR IDENTIFICATION 1 Signal Ground 14 No Connection 2 Signal Ground 15 Signal Ground 3 Overtemp Warning 16 V...

Page 13: ...ts a TTL level 1 if the air temperature exceeds the following factory set levels The warning trip point is 65 76 C typically and recovery point is 60 71 C typically Overtemperature Shutdown If the inlet ambient air temperature exceeds the following factory set levels the outputs are disabled The shutdown trip point is 70 81 C typically and recovery point is 40 48 C typically Analog Temperature Mon...

Page 14: ... ModuPAC Power Good J3 3 The optional Power Good signal on J3 3 is referenced to Signal Ground on J3 1 and indicates the status of the output voltage This signal is asserted a TTL 1 when the output voltage is above 95 of nominal It is a TTL 0 when the output voltage is below 85 of nominal If the Trim option is also used the Power Good trip points DO NOT track with the trimmed voltage It is possibl...

Page 15: ...tors designated as J2A 2 and J2B 2 for outputs A and B respectively Sense pins are on J2A 3 and J2B 3 respectively These pins are also duplicated on the power connectors J1A and J1B External Trim J2 1 Output voltage can be trimmed using an optional factory installed Trim potentiometer or with the Trim pin see Figure 9 The Trim potentiometer is located on the ConverterPAC If the Trim potentiometer ...

Page 16: ...5V 25µA 90kΩ V2 V1 VR6 2 75V 2 25V 5V IR7 V2 R7 5V 10kΩ 500µA IR8 IR7 IR6 525µA VR8 VNOM 10 V2 13 2V 5V 8 2V Given VNOM 12V R8 VR8 IR8 8 2V 525µA 15 62kΩ Using the above resistor combination a 12V output can be trimmed externally up to 13 2V and down to 10 8V For further information on external trimming refer to Chapter 5 of the Applications Manual or consult the factory for assistance CONSULT APP...

Page 17: ...AC JuniorPAC RamPAC 10mVP P max Overcurrent Protection 105 130 5V outputs DualPACs JuniorPACs RamPACs DualQPACS JuniorQPACs 30 125 5V outputs Overvoltage Protection ModuPACs and QPACs 115 135 N A to DualPACs JuniorPACs BatPACs RamPACs DualQPACs and Ju niorQPACs Efficiency 83 typical Output Power 1600W 45 C Output power dependent upon Input voltage Environmental Characteristics Storage Temperature ...

Page 18: ... Derating for MegaPACs using 5V Current Generation ConverterPACs See Curves Below for Non 5V ConverterPAC Configurations Figure 11 Temperature Derating for MegaPACs using 5V Current Generation ConverterPACs See Curves Above for 5V ConverterPAC Configurations ...

Page 19: ...ne whether the Vicor product is suitable and fit for your applications and products and to implement adequate design testing and operating safeguards for your planned application s and use s VICOR PRODUCTS ARE NOT DESIGNED AUTHORIZED OR WARRANTED FOR USE IN LIFE SUPPORT LIFE CRITICAL OR SAFETY CRITICAL SYSTEMS OR EQUIPMENT VICOR PRODUCTS ARE NOT CERTIFIED TO MEET ISO 13485 FOR USE IN MEDICAL EQUIP...

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