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Replace inrush current limiting (ICL) circuit with the one on UV cutoff.
Simpler
Cheaper
Reduce number of Fans
Currently we have eight- 2 fan controllers each controll control 4.
High voltage interlock loop
Requires changes to all other HV boards ( MCI, DC-DC, solar)
Not priority considering time constraints
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Not in Stock on Digikey– Needs Replacement?
Replacements:
https://www.digikey.ca/en/products/detail/texas-instruments/TPS565201DDCT/7899473monolithic-power-systems-inc/MP2225GJ-P/7361409?s=N4IgTCBcDaILIAUzIKwHEBSBaBIC6AvkA
IC ISOSPI COMM INTERFACE LTC6820IMS#3ZZPBF (ISO_SPI_Interface)
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Not in Stock on Digikey– Needs Replacement?
Replacements:
L9963T
https://www.mouser.ca/ProductDetail/STMicroelectronics/L9963T-TR?qs=CiayqK2gdcJE44qEFZps%252BA%3D%3D
Parts for L9963T-
https://www.digikey.ca/en/products/detail/stmicroelectronics/USBLC6-4SC6/725216
Couldn’t find a good replacement in Stock. Will continue searching.
Might be able to get sample from company website.
IC PULSE XFMR 1CT:1CT 350UH SMD (ISO_SPI_Interface)
PT61018AAPEL-S
https://www.digikey.ca/en/products/detail/PT61018AAPELbourns-S/PT61018AAPEL-SCT-ND/6677101?curr=usd&utm_campaign=buynow&utm_medium=aggregator&utm_source=octopartinc/SM13072APEL/6238215
IC HSD Dual-Channel 40V 1KOhm (high side driver to kill switch)
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IC I/O EXPANDER I2C 8B 20SSOP
Not in Stock on Digikey– Need Replacement?
Replacements:
https://www.digikey.ca/en/products/detail/microchip-technology/MCP23008T-E-SS/736037MCP23008-E-P/735951 (through hole)
https://www.digikey.ca/en/products/detail/nxp-usa-inc/PCF8574T-3-518/735691(100KHz)
https://www.digikey.ca/en/products/detail/nxp-usa-inc/PCA8574D-518/1692859(400KHz)
https://www.digikey.ca/en/products/detail/nxp-usa-inc/PCA9674APW-118/1301000(1MHz)
IC REMOTE THERMAL CTLR 24QSOP (Fan Controller)
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Diodes
DMN3023L-7(MOSFET N-CH 30V 4A SOT23-6)- Not in Stock
Replacement-https://www.digikey.ca/en/products/detail/diodes-incorporated/DMN3028LQ-7/14563115
2. STT4P3LLH6 (P-Channel 30 V 4A (Ta) 1.6W (Ta) Surface Mount SOT-23-6)- Not in Stock
Replacement- https://www.digikey.ca/en/products/detail/toshiba-semiconductor-and-storage/SSM3J374R-LXHF/14555981