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BQ51025: The Power is lower than expected value

Sara Jia
Expert 2975 points
Part Number: BQ51025
Other Parts Discussed in Thread: BQ500215,

Dears,

    My customer use BQ500215 as ,BQ51025 as receiver, but there are odd problem, the normal power is 10W, but some equitment  the power drop down to 2-4W after running 2-4hours. when restarting it ,it can not recover. the customer sch as follow, Could you give me hands on this issue?

  • 0
    TI__Guru* 75656 points
    On the TX (bq500215) check the green LED, for 10W it is a fast blink for 5W it is a slow blink. This will tell us if the TX is entering the correct mode. Another thing to check is the TX Rail voltage at top of H-Bridge (EVM TP18). We want to see if the TX is cannot provide enough power.
  • 0 in reply to Bill Johns
    Expert 2975 points
    Dear,
    Thanks for your reply, the TX is normal, because we used the same TX equipment, Just some RX can not receive the set level power. Problem is focus on the RX. But we didn't find it. Could you help me check the sch and give me some advice for it?