Difference between revisions of "RC10KickerElectronics"
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===Current Limit=== | ===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. | 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==== | ====Comparator==== | ||
Revision as of 15:31, 24 May 2010
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
LT3750
- Vendor - Digikey
- Vendor Part Number - LT3750EMS#PBF-ND
- Manufacturer - Linear
- Manufacturer Part Number - LT3750
- Cost - $7.00
- datasheet
- digikey
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
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 - MAX932CSA+-ND
- Manufacturer - Maxim
- Manufacturer Part Number - MAX932
- Cost - $3.15
- 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
Isolated DC/DC Converter
The DC/DC converter needs to power the
- ADC - 5V 500uA
- Isolation - 5V 6mA
- Comparator
- Comparator Logic
- IGBT driver - ???
Solenoid
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.
- Candidate winding: 22AWG from http://www.solenoidcity.com/solenoid/tubular/s-20-125hp1.htm
- BETTER candidate winding: 19AWG from http://solenoidcity.com/solenoid/tubular/S-29-150hfp1.htm
