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BQ51013B: Troubleshooting Steps

Part Number: BQ51013B

Hello all,

I am currently trying to get a custom system with the BQ51013B up and going. Unfortunately the out put from the BQ51013B is not looking quite right. I have attached oscilloscope prints of the OUT signal and the RECT signal. I came across this thread and went through the items discussed there. I have found that the capacitors for the CA1 series are 0402's instead of 0603's. I am now going through and double checking our measurements and calculations for C1 and C2 as detailed in equation 6 of that data sheet. Based on the behavior seen below, is there any where else anyone would recommend to investigate first?

Best regards,

Eric

Figure 1: OUT

Figure 2: RECT