New Suggestions
· Replace inrush current limiting (ICL) circuit with the one on UV cutoff.
simpler
cheaper
· Reduce number of fans
· High voltage interlock loop
Requires changes to all other HV boards (MCI, DC-DC, solar)
Not priority considering time constrains
Major ICs
· Buck Converter (12V to 5V)
IC REG BUCK 4.5V TO 17V, 5A, SYNCHRONOUS STEISOSPI COMM
TPS565201DDCT
Not in Stock on Digikey– Needs Replacement?
Replacements:
https://www.digikey.ca/en/products/detail/richtek-usa-inc/RT6255BHGJ6F/6238429
https://www.digikey.ca/en/products/detail/monolithic-power-systems-inc/MP2225GJ-P/7361409
· IC ISOSPI COMM INTERFACE LTC6820IMS#3ZZPBF (ISO_SPI_Interface)
Isolated Communications Interface 16-MSOP
Not in Stock on Digikey– Needs Replacement?
Replacements:
Couldn’t find a good replacement in Stock. Will continue searching.
· IC PULSE XFMR 1CT:1CT 350UH SMD (ISO_SPI_Interface)
PT61018AAPEL-S
· IC HSD Dual-Channel 40V 1KOhm (high side driver to kill switch)
TPS2H000-Q1
Not in Stock on Digikey– Needs Replacement?
Replacements:
https://www.digikey.ca/en/products/detail/stmicroelectronics/L6375D013TR/715925
https://www.digikey.ca/en/products/detail/stmicroelectronics/TDE1898CFPT/1003404
https://www.digikey.ca/en/products/detail/stmicroelectronics/TDE1747FPT/1039884
(will check schematic again for exact requirements)
· MCP23008T-E/SS (Firmware Contactor Control)
IC I/O EXPANDER I2C 8B 20SSOP
Not in Stock on Digikey– Needs Replacement?
Replacements:
https://www.digikey.ca/en/products/detail/nxp-usa-inc/PCA9674PW-118/1301008
https://www.digikey.ca/en/products/detail/nxp-usa-inc/PCA9674APW-118/1301000
https://www.digikey.ca/en/products/detail/analog-devices-inc-maxim-integrated/MAX7324AEG/1702036
· IC REMOTE THERMAL CTLR 24QSOP (Fan Controller)