RC10KickerElectronics

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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.

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.

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.