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greenjacketgirl / Solar_Charger

This project aims to charge a 2s 7.4V lipo battery with a 11Voc solar panel by using Texas Instruments' BQ24650 Stand-Alone Synchronous Buck Battery Charge Controller for Solar Power With MAximum Point Tracking
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STAT1 LED on even when the battery is not connected #8

Open greenjacketgirl opened 4 years ago

greenjacketgirl commented 4 years ago

Background

The STAT1 and STAT2 pins on the IC are used to help the user figure out what the charger IC is doing and what state it is in. STAT1 LED on, STAT2 LED off == charging in progress STAT1 LED off, STAT2 LED on == charging complete STAT1 LED off, STAT2 LED off == SLEEP mode or some other fault.

Description of Issue

The STAT1 pin should only light up when all the charging criteria are met, and this include a battery detection function. So the question arises - why is the LED coming on even when a battery is not attached?

shridattdudhat commented 4 years ago

The same thing happens to my board... I have designed board in Eagle CAD, I think maybe the issue with the layout I am not sure... Please suggest if you find some solution.

This is my layout and schematic screenshot:

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