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(Created page with '==Schematics== ===Isolation=== We will have isolated voltage feedback. The voltage will be transmitted via a SPI ADC over a digital isolator. ==Parts== ===Digital Isolator===...') |
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| − | == | + | ==Systems== |
| − | === | + | ===Voltage Sense=== |
| − | We will have isolated voltage feedback. The voltage will be transmitted via a SPI ADC over a digital isolator. | + | We will have isolated voltage feedback. The voltage will be transmitted via a SPI ADC over a digital isolator. |
| + | ====ADC==== | ||
| + | : Vendor - Digikey | ||
| + | : Vendor Part Number - MCP3001T-I/SNCT-ND | ||
| + | : Manufacturer - Microchip | ||
| + | : Manufacturer Part Number - MCP3001 | ||
| + | : Cost - $1.96 | ||
| + | : [http://ww1.microchip.com/downloads/en/DeviceDoc/21293C.pdf datasheet] | ||
| + | : [http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=MCP3001T-I/SNCT-ND digikey] | ||
| − | == | + | ===Charger=== |
| + | LT3750 Design from previous, with modifications to support ~9.5A peak charge current | ||
| − | === | + | ====FET==== |
| + | FET FQB34N20 overkill - but needed after the fire on rev 1 - 2007 | ||
| + | : Vendor - Digikey | ||
| + | : Vendor Part Number - FQB34N20TM_AM002CT-ND | ||
| + | : Manufacturer - Fairchild | ||
| + | : Manufacturer Part Number - FQB34N20TM_AM002 | ||
| + | : Cost - $2.47 | ||
| + | : [http://www.fairchildsemi.com/ds/FQ/FQB34N20.pdf datasheet] | ||
| + | : [http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=FQB34N20TM_AM002CT-ND digikey] | ||
| + | : [http://www.research-service.com/ custom papers] | ||
| − | === | + | ====LT3750==== |
| + | : Vendor - Digikey | ||
| + | : Vendor Part Number - LT3750EMS#PBF-ND | ||
| + | : Manufacturer - Linear | ||
| + | : Manufacturer Part Number - LT3750 | ||
| + | : Cost - $7.00 | ||
| + | : [http://cds.linear.com/docs/Datasheet/3750fa.pdf datasheet] | ||
| + | : [http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=LT3750EMS%23PBF-ND digikey] | ||
| − | === | + | ====Transformer==== |
| + | : Vendor - Coilcraft | ||
| + | : Vendor Part Number - DA2034-ALB | ||
| + | : Manufacturer - Coilcraft | ||
| + | : Manufacturer Part Number - DA2034-ALB | ||
| + | : Cost - $5.29 | ||
| + | : [http://www.coilcraft.com/pdf_viewer/showpdf.cfm?f=pdf_store:da2032.pdf datasheet] | ||
| + | : [http://www.coilcraft.com/da2032.cfm coilcraft] | ||
| − | ==== | + | ====Caps==== |
We are gonna shoot for between 4000-5000uF by using '''two''' of the following | We are gonna shoot for between 4000-5000uF by using '''two''' of the following | ||
: Vendor - Digikey | : Vendor - Digikey | ||
| − | : Vendor Part Number - | + | : Vendor Part Number - P13180-ND |
: Manufacturer - Panasonic | : Manufacturer - Panasonic | ||
| − | : Manufacturer Part Number - | + | : Manufacturer Part Number - ECE-T2EP272EA |
| − | : Cost - $ | + | : Cost - $12.86 quant 10 |
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
: Description - 2700uF kicker capacitors | : Description - 2700uF kicker capacitors | ||
| − | : [] | + | : [http://www.panasonic.com/industrial/components/pdf/PIC_T-UP_SERIES_DNE.pdf datasheet] |
| − | : [] | + | : [http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=P13180-ND digikey] |
| − | === | + | ===Trigger=== |
| − | + | The trigger system discharges the stored energy in the caps to either the chipper or kicker | |
| − | ===IGBT=== | + | ====IGBT==== |
| + | Rated 330V 180A. One for kicker, one for chipper | ||
: Vendor - Digikey | : Vendor - Digikey | ||
: Vendor Part Number - FGA180N33ATTU-ND | : Vendor Part Number - FGA180N33ATTU-ND | ||
| Line 45: | Line 68: | ||
: [http://www.fairchildsemi.com/pf/FG/FGA180N33ATD.html Fairchild FGA180N33ATDTU link] | : [http://www.fairchildsemi.com/pf/FG/FGA180N33ATD.html Fairchild FGA180N33ATDTU link] | ||
| − | == | + | ====IGBT Driver==== |
| + | Non-inverting MOSFET 1.5A Drivers | ||
| + | : Vendor - Digikey | ||
| + | : Vendor Part Number - TC4427ACOA-ND | ||
| + | : Manufacturer - Microchip | ||
| + | : Manufacturer Part Number - TC4427 | ||
| + | : Cost - $1.01 | ||
| + | : [http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=TC4427ACOA-ND digikey] | ||
| + | : [http://ww1.microchip.com/downloads/en/DeviceDoc/21423F.pdf datasheet] | ||
| + | |||
| + | ====4.7uF Ceramic Bypass Cap==== | ||
| + | : Vendor - Digikey | ||
| + | : Vendor Part Number - 399-5507-1-ND | ||
| + | : Manufacturer - Kemet | ||
| + | : Manufacturer Part Number - C1206C475K5PACTU | ||
| + | : Cost - $0.68 | ||
| + | : [http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=399-5507-1-ND digikey] | ||
| + | : [http://www.kemet.com/kemet/web/homepage/kechome.nsf/vapubfiles/F3102_X5R.pdf/$file/F3102_X5R.pdf datasheet] | ||
| + | |||
| + | ====Tantalum Bypass Cap==== | ||
| + | : Vendor - Digikey | ||
| + | : Vendor Part Number - 478-2359-1-ND | ||
| + | : Manufacturer - AVX | ||
| + | : Manufacturer Part Number - TAJC476K020RNJ | ||
| + | : Cost - $1.98 | ||
| + | : [http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=478-2359-1-ND digikey] | ||
| + | : [http://www.avx.com/docs/Catalogs/taj.pdf datasheet] | ||
| + | |||
| + | ====Flyback Diode==== | ||
| + | : Vendor - Digikey | ||
| + | : Vendor Part Number - 6A6DICT-ND | ||
| + | : Manufacturer - Diodes Inc | ||
| + | : Manufacturer Part Number - 6A6-T | ||
| + | : Cost - $0.52 | ||
| + | : [http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=6A6DICT-ND digikey] | ||
| + | : [http://www.diodes.com/datasheets/ds28009.pdf datasheet] | ||
| + | |||
| + | ===Current Limit=== | ||
| + | To try to save our silicon, we have decided to try to limit the current using a sense resistor, a comparator, and some logic. | ||
| + | |||
| + | ====Current Sense Resistor==== | ||
| + | : Vendor - Digikey | ||
| + | : Vendor Part Number - FCSL90R010FERCT-ND | ||
| + | : Manufacturer - Ohmite | ||
| + | : Manufacturer Part Number - FCSL90R010FER | ||
| + | : Cost - $1.20 | ||
| + | : [http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=FCSL90R010FERCT-ND digikey] | ||
| + | : [http://www.ohmite.com/catalog/pdf/fcsl.pdf datasheet] | ||
| + | |||
| + | ====Comparator==== | ||
| + | : Vendor - Digikey | ||
| + | : Vendor Part Number - MCP6541RT-E/OTCT-ND | ||
| + | : Manufacturer - Microchip | ||
| + | : Manufacturer Part Number - MCP6541R | ||
| + | : Cost - $0.43 | ||
| + | : [http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=MCP6541RT-E/OTCT-ND digikey] | ||
| + | : [http://ww1.microchip.com/downloads/en/DeviceDoc/21696f.pdf datasheet] | ||
| + | |||
| + | ===Isolation=== | ||
| + | We need to isolate the voltage sense, and the kick signals. This gives | ||
| + | |||
| + | * Sense (SPI) | ||
| + | ** CLK - IN | ||
| + | ** CS - IN | ||
| + | ** Dout - OUT | ||
| + | * Trigger | ||
| + | ** Chip - IN | ||
| + | ** Kick - IN | ||
| + | |||
| + | So we need 4/1 in/out isolation | ||
| + | |||
| + | ====Isolator==== | ||
| + | : Vendor - Mouser | ||
| + | : Vendor Part Number - 634-SI8451AA-A-IS1 | ||
| + | : Manufacturer - Si Labs | ||
| + | : Manufacturer Part Number - SI8451AA-A-IS1 | ||
| + | : Cost - $2.43 | ||
| + | : [http://www.mouser.com/ProductDetail/Silicon-Labs/SI8451AA-A-IS1/?qs=sGAEpiMZZMssyD0wnx/ymAX%252benCYBeiQHqVgI%252biUWPQ= mouser] | ||
| + | : [http://www.silabs.com/Support%20Documents/TechnicalDocs/Si845x.pdf datasheet] | ||
| + | |||
| + | ===Power Supply=== | ||
| + | |||
| + | The DC/DC converter needs to power the | ||
| + | * ADC - 5V 500uA | ||
| + | * Isolation - 5V 6mA | ||
| + | * Comparator - 5V 5mA (ballpark) | ||
| + | * Comparator Logic - 5V 5mA (7400 series logic, probably almost nothing) | ||
| + | * IGBT driver - 12V 10mA (be sure to bypass Vbat with 4.7uF ceramic, 47uF tantalum) | ||
| + | |||
| + | So lets shoot for around 5V 50mA LDO and around 12V 100mA DC/DC converter | ||
| + | |||
| + | ====Isolated DC/DC Converter==== | ||
| + | : Vendor - Digikey | ||
| + | : Vendor Part Number - 445-2473-ND | ||
| + | : Manufacturer - TDK-Lambda | ||
| + | : Manufacturer Part Number - CC3-1212SF-E | ||
| + | : Cost - $11.37 | ||
| + | : [http://search.digikey.com/scripts/DkSearch/dksus.dll?lang=en&site=US&WT.z_homepage_link=hp_go_button&KeyWords=CC3-1212SF-E&x=0&y=0&stock=1 digikey] | ||
| + | : [http://us.tdk-lambda.com/lp/ftp/appnotes/cc-e_datasheet.pdf datasheet] | ||
| + | |||
| + | ====5V 50mA LDO==== | ||
| + | : Vendor - Digikey | ||
| + | : Vendor Part Number - | ||
| + | : Manufacturer - | ||
| + | : Manufacturer Part Number - | ||
| + | : Cost - | ||
| + | : [ digikey] | ||
| + | : [ datasheet] | ||
| + | |||
| + | |||
| + | ====10A Fuse==== | ||
| + | : Vendor - Digikey | ||
| + | : Vendor Part Number - F2973CT-ND | ||
| + | : Manufacturer - Littlefuse | ||
| + | : Manufacturer Part Number - 0157010.DR | ||
| + | : Cost - $2.80 | ||
| + | : [http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=F2973CT-ND digikey] | ||
| + | : [http://www.littelfuse.com/data/en/Data_Sheets/Littelfuse_Fuse_157.pdf datasheet] | ||
| + | |||
| + | ==Solenoids== | ||
See the [[SolenoidDevelopment| Solenoid Development]] page for more information. For logistics reasons, we may purchase a solenoid as we did last year and take it apart for use in our mounting apparatus. | See the [[SolenoidDevelopment| Solenoid Development]] page for more information. For logistics reasons, we may purchase a solenoid as we did last year and take it apart for use in our mounting apparatus. | ||
| − | + | ===Kicker Solenoid=== | |
| + | : Vendor - Solenoid City | ||
| + | : Vendor Part Number - S-20-125H in 19AWG | ||
| + | : Manufacturer - Solenoid City | ||
| + | : Manufacturer Part Number - S-20-125H in 19AWG | ||
| + | : Cost - $48.01 | ||
| + | : [http://www.electromechanicsonline.com/products/SOTUH032051.asp order link] | ||
| + | : [http://www.solenoidcity.com/solenoid/tubular/s-20-125hp1.htm datasheet] | ||
| + | |||
| + | ===Chipper Solenoid=== | ||
| + | : Vendor - Solenoid City | ||
| + | : Vendor Part Number - S-20-90 in 24AWG | ||
| + | : Manufacturer - Solenoid City | ||
| + | : Manufacturer Part Number - S-20-90 in 24AWG | ||
| + | : Cost - $33.56 | ||
| + | : [http://www.electromechanicsonline.com/products/SOTUL023051.asp order link] | ||
| + | : [http://www.solenoidcity.com/solenoid/tubular/s-20-90p1.htm datasheet] | ||
| + | |||
| + | [[Category: RC Electrical]] | ||
| + | |||
| + | [[Category: 2009-2010]] | ||
Latest revision as of 20:02, 24 May 2020
Contents
Systems
Voltage Sense
We will have isolated voltage feedback. The voltage will be transmitted via a SPI ADC over a digital isolator.
ADC
- Vendor - Digikey
- Vendor Part Number - MCP3001T-I/SNCT-ND
- Manufacturer - Microchip
- Manufacturer Part Number - MCP3001
- Cost - $1.96
- datasheet
- digikey
Charger
LT3750 Design from previous, with modifications to support ~9.5A peak charge current
FET
FET FQB34N20 overkill - but needed after the fire on rev 1 - 2007
- Vendor - Digikey
- Vendor Part Number - FQB34N20TM_AM002CT-ND
- Manufacturer - Fairchild
- Manufacturer Part Number - FQB34N20TM_AM002
- Cost - $2.47
- datasheet
- digikey
- custom papers
LT3750
- Vendor - Digikey
- Vendor Part Number - LT3750EMS#PBF-ND
- Manufacturer - Linear
- Manufacturer Part Number - LT3750
- Cost - $7.00
- datasheet
- digikey
Transformer
- Vendor - Coilcraft
- Vendor Part Number - DA2034-ALB
- Manufacturer - Coilcraft
- Manufacturer Part Number - DA2034-ALB
- Cost - $5.29
- datasheet
- coilcraft
Caps
We are gonna shoot for between 4000-5000uF by using two of the following
- Vendor - Digikey
- Vendor Part Number - P13180-ND
- Manufacturer - Panasonic
- Manufacturer Part Number - ECE-T2EP272EA
- Cost - $12.86 quant 10
- Description - 2700uF kicker capacitors
- datasheet
- digikey
Trigger
The trigger system discharges the stored energy in the caps to either the chipper or kicker
IGBT
Rated 330V 180A. One for kicker, one for chipper
- Vendor - Digikey
- Vendor Part Number - FGA180N33ATTU-ND
- Manufacturer - Fairchild
- Manufacturer Part Number - FGA180N33ATTU
- Cost - $3.39
- digikey
- Fairchild FGA180N33ATDTU link
IGBT Driver
Non-inverting MOSFET 1.5A Drivers
- Vendor - Digikey
- Vendor Part Number - TC4427ACOA-ND
- Manufacturer - Microchip
- Manufacturer Part Number - TC4427
- Cost - $1.01
- digikey
- datasheet
4.7uF Ceramic Bypass Cap
- Vendor - Digikey
- Vendor Part Number - 399-5507-1-ND
- Manufacturer - Kemet
- Manufacturer Part Number - C1206C475K5PACTU
- Cost - $0.68
- digikey
- datasheet
Tantalum Bypass Cap
- Vendor - Digikey
- Vendor Part Number - 478-2359-1-ND
- Manufacturer - AVX
- Manufacturer Part Number - TAJC476K020RNJ
- Cost - $1.98
- digikey
- datasheet
Flyback Diode
- Vendor - Digikey
- Vendor Part Number - 6A6DICT-ND
- Manufacturer - Diodes Inc
- Manufacturer Part Number - 6A6-T
- Cost - $0.52
- digikey
- datasheet
Current Limit
To try to save our silicon, we have decided to try to limit the current using a sense resistor, a comparator, and some logic.
Current Sense Resistor
- Vendor - Digikey
- Vendor Part Number - FCSL90R010FERCT-ND
- Manufacturer - Ohmite
- Manufacturer Part Number - FCSL90R010FER
- Cost - $1.20
- digikey
- datasheet
Comparator
- Vendor - Digikey
- Vendor Part Number - MCP6541RT-E/OTCT-ND
- Manufacturer - Microchip
- Manufacturer Part Number - MCP6541R
- Cost - $0.43
- digikey
- datasheet
Isolation
We need to isolate the voltage sense, and the kick signals. This gives
- Sense (SPI)
- CLK - IN
- CS - IN
- Dout - OUT
- Trigger
- Chip - IN
- Kick - IN
So we need 4/1 in/out isolation
Isolator
- Vendor - Mouser
- Vendor Part Number - 634-SI8451AA-A-IS1
- Manufacturer - Si Labs
- Manufacturer Part Number - SI8451AA-A-IS1
- Cost - $2.43
- mouser
- datasheet
Power Supply
The DC/DC converter needs to power the
- ADC - 5V 500uA
- Isolation - 5V 6mA
- Comparator - 5V 5mA (ballpark)
- Comparator Logic - 5V 5mA (7400 series logic, probably almost nothing)
- IGBT driver - 12V 10mA (be sure to bypass Vbat with 4.7uF ceramic, 47uF tantalum)
So lets shoot for around 5V 50mA LDO and around 12V 100mA DC/DC converter
Isolated DC/DC Converter
- Vendor - Digikey
- Vendor Part Number - 445-2473-ND
- Manufacturer - TDK-Lambda
- Manufacturer Part Number - CC3-1212SF-E
- Cost - $11.37
- digikey
- datasheet
5V 50mA LDO
- Vendor - Digikey
- Vendor Part Number -
- Manufacturer -
- Manufacturer Part Number -
- Cost -
- [ digikey]
- [ datasheet]
10A Fuse
- Vendor - Digikey
- Vendor Part Number - F2973CT-ND
- Manufacturer - Littlefuse
- Manufacturer Part Number - 0157010.DR
- Cost - $2.80
- digikey
- datasheet
Solenoids
See the Solenoid Development page for more information. For logistics reasons, we may purchase a solenoid as we did last year and take it apart for use in our mounting apparatus.
Kicker Solenoid
- Vendor - Solenoid City
- Vendor Part Number - S-20-125H in 19AWG
- Manufacturer - Solenoid City
- Manufacturer Part Number - S-20-125H in 19AWG
- Cost - $48.01
- order link
- datasheet
Chipper Solenoid
- Vendor - Solenoid City
- Vendor Part Number - S-20-90 in 24AWG
- Manufacturer - Solenoid City
- Manufacturer Part Number - S-20-90 in 24AWG
- Cost - $33.56
- order link
- datasheet
