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STM32WB BLE ISSUE

RIOD_HW
Associate

Hi , 

I have designed one product with STM32WB55 for BLE and Zigbee concurrency. 

The schematic design I have followed is the with out SMPS design (LDO mode). VFBSMPS, VLXSMPS, VDDSMPS pins are connected to VDD. 

Our firmware will scan for BLE devices and it works in Nucleo development board. But not functional in our custom board. 

With our board it is able to connect upto 4 devices only, but the same firmware can handle up to 18 devices in development board. 

What will be the reasons for this ? 

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