Hello,
I am currently looking at the reference designs for STM32WLEx and am interested in board reference STDES-WL5I4IHH. (high band, high power with optimized BOM target for 915MHz/22dBm). As seen on page 6 of:
Data brief - STDES-WL5xxxxx - Reference designs for STM32WL5x and STM32WLEx microcontrollers
When looking at the BOM, the only difference I see between STDES-WL5I4IHH and STDES-WL5I4IHL is the IPD with designator U4. But when looking at the schematics, inductor L3 has no value attached. The BOM states it is 47nH and recommends LQW15AN47NG00. I also checked for STDES-WL5I4ILH which also has 47nH for L3. Is this correct?
Do all 3 of these use an L3 inductor with value 47nH?
STDES-WL5I4IHH | Product - STMicroelectronics
STDES-WL5I4IHL | Product - STMicroelectronics
STDES-WL5I4ILH | Product - STMicroelectronics
I am mainly asking this question because when looking at the eval board NUCLEO-WL55JC, there is a switch that changes that inductor's value for transmitting high or low output power with values of 33nH and 47nH for high band (L7 and L8 in the schematic for the NUCLEO-WL55JC). NUCLEO-WL55JC | Product - STMicroelectronics
I would just like to confirm that the IPD component takes that into account and all 3 of those reference boards do use 47nH for L3.
Thanks.
