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PaxInstruments / labwiz-board

A development board based on the STM32 series processors specifically targeting the STM32F103RxT series.
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MCP73831 PROG resistor #57

Closed charlespax closed 7 years ago

charlespax commented 7 years ago

Check the PROG resistor on the battery charger. Make sure the value defines the correct charge rate.

samchoy88 commented 7 years ago

Since we face the same issue in T400 circuit design. https://github.com/PaxInstruments/t400-electronics/issues/163

We should follow the T400 electronic design and use 2.32K (1%) in here With a 2.32K resistor the typical charge current would be 1000 / 2.32 = 431mA The highest and lowest possible charge currents, using 10% for the chip and 1% for the resistor would be: Maximum 479mA Minimum 384mA

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charlespax commented 7 years ago

I've added a 2.32K resistor to the RLC library and added it to the schematic.

screen shot 2016-12-11 at 12 46 09