New Suggestions
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The BMS Carrier controls the fans and relays, logs the voltage, current, temperature and relay states, and detects overcharge, overcurrent, overtemperature and undercharge states.
New Suggestions
Replace inrush current limiting (ICL) circuit with the one on UV cutoff.
Replace inrush current limiting (ICL) circuit with the one on UV cutoff. simpler
Simpler
Cheaper
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Reduce number of
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Fans
Currently we have eight- 2 fan controllers each control 4.
High voltage interlock loop
Requires changes to all other HV boards ( MCI, DC-DC, solar)
Not priority considering time
constraints
https://uwmidsun.atlassian.net/wiki/spaces/ELEC/pages/2972418049/BMS+Carrier+MSXV
Major ICs
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Buck Converter (12V to 5V)
IC REG BUCK 4.5V TO 17V, 5A, SYNCHRONOUS STEISOSPI COMM
...
Not in Stock on Digikey– Needs Replacement?
Replacements:
https://www.digikey.ca/en/products/detail/richtek-usa-inc/RT6255BHGJ6F/6238429https://www.digikey.ca/en/products/detail/monolithic-power-systems-inc/MP2225GJ-P/7361409?s=N4IgTCBcDaILIAUzIKwHEBSBaBIC6AvkA
·
IC ISOSPI COMM INTERFACE LTC6820IMS#3ZZPBF (ISO_SPI_Interface)
Isolated Communications Interface 16-MSOP
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. ·
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
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IC HSD Dual-Channel 40V 1KOhm (high side driver to kill switch)
TPS2H000-Q1
Not in Stock on Digikey– Needs Need Replacement?
Replacements:
https://www.digikey.ca/en/products/detail/stmicroelectronics/L6375D013TRIPS2050HTR/71592515814430
https://www.digikeymouser.ca/enProductDetail/products/detail/stmicroelectronics/TDE1898CFPT/1003404https://www.digikey.ca/en/products/detail/stmicroelectronics/TDE1747FPT/1039884Infineon-Technologies/BTS70021EPPXUMA1?qs=qSfuJ%252Bfl%2Fd4cKoHb1mP5aw%3D%3D
(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 Need Replacement?
Replacements:
https://www.digikey.ca/en/products/detail/microchip-technology/MCP23008-E-P/735951 (through hole)
https://www.digikey.ca/en/products/detail/nxp-usa-inc/PCA9674PWPCF8574T-3-118/1301008518/735691(100KHz)
https://www.digikey.ca/en/products/detail/nxp-usa-inc/PCA9674APWPCA8574D-118/1301000518/1692859(400KHz)
https://www.digikey.ca/en/products/detail/analognxp-devicesusa-inc/PCA9674APW-maxim-integrated/MAX7324AEG/1702036· 118/1301000(1MHz)
IC REMOTE THERMAL CTLR 24QSOP (Fan Controller)
G6RN-1A DC12 Omron Relay SPST
Not in Stock on Digikey– Need Replacement?
Replacements:
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