Dear team,
how can the VCORE voltage be set on the FS26? We want to realize VCORE=1.2V.
Are there any feedback resistors necessary on the CORE_FB input?
What is the internal reference of the CORE_FB pin?
Or is this device dependent by ordering code?
Best regards,
Jochen
Hello,
Sure, let me explain.
VCORE is a synchronous buck converter with integrated FETs. VCORE is dedicated for microcontroller core supply. Output DC current up to 0.8 A or 1.65 A (depending on part number).
Output voltage range setting from 0.8 V to 3.35 V (OTP configuration, 10 mV step) which will be modified from the OTP configuration, please see OTP_CORE_VOLT1 register bit description.
So, if you want Core voltage to 1.2V use 28h.
Hello team,
OK, understood. For development purposes this is a way.
But how is the FS26 with VCORE=1.2V and OTP_CORE_VOLT1=0x28 in series production to be identified? With a special part number?
Hello,
Please find the information in the Application note AN12995, chapter 3.5 Vcore Regulator.
Note: The document is under secure files.