Hi TI,
We are attempting to communicate with our BQ76PL536-Q1 chip mounted on our PCB and are not able to receive communication back from the chip. We want to ensure that the chip is working properly and would like advice on what we can do to test it. We are controlling our chip through an arduino and have successfully interfaced with the EVM in our possession. Everything works wonderfully with the EVM which suggests the issues with our design is hardware related.
With our design, we have checked:
REG50 = 4.995V
LDOA = 4.796V
Vref = 2.169V
Applied 5V to CONV_H while monitoring DRDY_H. DRDY_H goes low for roughly 500us, suggesting that it is doing a conversion.
We have also ensured that HSEL is grounded.
Using a logic analyzer, we can see that comms to the chip is all good, but we're getting nothing out of the chip. We will upload our results as well as our schematic.
Please advise and thank you,
Houman
Schematic and PCB design:BMS4-3.PDF
