BQ25570EVM-206: BQ25570EVM query

Star Xu

Part Number: BQ25570EVM-206

My customer test with BQ25570EVM, input 2.3V DC and connected a 470uF capacitor to Vstor.

After charging, the capacitor is 4.6v, and the Vout output is 3.3v (modified R10), but after the load is connected, the Vout output voltage is from 3.3v Down to 60mV, what is the reason?

Waiting for your reply.

Thanks

Star

over 3 years ago

+1 Jeff F over 3 years ago

TI__Guru*** 143880 points

Hi Star,

How much input power is the charger getting from the 2.3V source? What is the load on VSTOR (other than the buck converter) and load on VOUT?

Regards,

Jeff

+1 Star Xu over 2 years ago in reply to Jeff F

TI__Genius 9645 points

Hi Jeff

Thanks for your reply, the problem has been solved. A short problem during load test.

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BQ25570EVM-206: BQ25570EVM query