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FOME-Tech / Polygonus

Polygonus - Brain board for FOME ecus
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Polygonus chip shortage edition #6

Closed OrchardPerformance closed 2 years ago

OrchardPerformance commented 2 years ago

Ongoing shortages, FFS.

Currently out of stock are:

Highsides - BTS4175SGA Lowsides - VNLD5160/5090 AV Amps - MCP6004

Options :- BTS716G - ~600 in stock at mouser, https://www.mouser.co.uk/datasheet/2/196/Infineon-BTS716G-DS-v01_00-EN-1226517.pdf

OrchardPerformance commented 2 years ago

See - https://github.com/rusefi/rusefi/wiki/Chip-Shortage-Parts-Interchange

OrchardPerformance commented 2 years ago

Amps - TP6004 from LCSC

OrchardPerformance commented 2 years ago

@mck1117 @blundar Thoughts and comments on the substitutions below? Able to get most other things but will check and stockpile before first board run.

STM32429 -> STM32 F407 ZGT6

LMR14020 -> NCV891130 https://www.onsemi.com/pdf/datasheet/ncv891130-d.pdf

TJA1051T -> MCP2551 https://uk.farnell.com/microchip/mcp2551-i-sn/ic-can-transceiver-hi-speed-smd/dp/9758569?CMP=GRHB-OCTOPART

BTS417 -> BTS716G Data sheet above

TLS115 out of stock. Lowsides out of stock.

MIC4427 ~100pc sorted out.

OrchardPerformance commented 2 years ago

Checking pins on the CAN transceiver suggests it's a direct replacement.

BTS716 looks ok too with associated routing changes, can't work out the difference between the G, GB and GX.

Going to need a bit more help on the LMR14020, looks like it could work with some circuit mods.

Lowside is proving hard, worth considering a gate driver and transistor setup instead?

OrchardPerformance commented 2 years ago

BTS716 allows G and GB version as well as the BTS724G for a 12A max output.

OrchardPerformance commented 2 years ago

LMR14020 can be replaced by 140x0 as there are different powered versions, LCSC have 14050 and 14030 in stock

OrchardPerformance commented 2 years ago

Shortage edition ordered 30/8/2022