Liam Hawkins 5aad379396

Mh 48 bms afe rev 1.0 (#111) ...

* MH-48 BMS AFE Rev 1.0

- Switched to fuses with higher voltage rating.
- Replaced cell input resistors, zener diodes, thermistor capacitors,
discharge MOSFETS, and discharge gate resistors with component arrays.
- Added separate wires for balancing and cell inputs.
- Replaced the MUX to support up to 32 thermistors. Currently using 20.
- Replaced the connectors with right angle connectors so AFEs can be
stacked.

Schematic Library Changes:
- Added CAP ARRAY 10000PF 50V X7R 0612.
- Added CONN R/A 14POS 3MM.
- Added CONN R/A 16POS 3MM.
- Added CONN R/A 20POS 3MM.
- Added DIODE ZENER ARRAY 5.6V SOT363.
- IC 32x1 Multiplexer ADG731BSUZ:
        - Switched supplier link from QFN to QFP package
        - Removed exposed pad pin
        - Linked to existing footprint TSQFP50P890X890X160-48M
        - Flipped schematic component in x-axis
- Added RES ARRAY 100 OHM 0.5% 4RES 1206. Linked to existing footprint.
- Added RES ARRAY 3.3K OHM 2% 16SOIC.

Footprint Library Changes:
- Added CAP ARRAY 4 POS 0612.
- Added CONN, R/A 14POS MICRO-FIT 3mm.
- Added CONN, R/A 16POS MICRO-FIT 3mm.
- Added CONN, R/A 20POS MICRO-FIT 3mm.
- Added SOT-363.
- Modified silkscreen of FUSE JFC2410-0500FS
- Added SOIC16.

To Do:
- Consider other AFEs (LTC6813?).
- Use higher balancing currents to measure cell resistance during
operation.
- Active balancing?
- More thermistors?

* MH-48 BMS AFE Rev 1.0 Updated the Draftsman Document and regenerated the output files

2020-03-28 13:41:28 -04:00

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