Other Parts Discussed in Thread: BQ51025, BQ500511,
Im using the bq50002 with the bq500511 copied from the evm. Initialy I didn't have leds but have added them. The device starts correctly and delivers a load to a Receiver based on the bq51025 but after about 30 seconds then the Transmitter Switches off and the red led comes on and the Output Switches off.
Before this the Receiver voltage was oscillating from a few Volts to Vout over a period of about 5 seconds at a load over 400mA, this stopped when I disabled FOD by removing the FOD THR pull down resistor.
Also sometimes at Startup the receiver voltage Vout does not reach the correct voltage, it stays about one 1v lower - but only when starting with about 500mA load and I cannot get more than 700ma whatever I do.
The datasheet just says fault but I cant find what type, what is the cause.
Attached is a pdf of my schematic0513.BQ50002_Transmitter.pdf