UCD3138FW-PSFB: Question about CPCC

user4768560

Part Number: UCD3138FW-PSFB

Hello, what is the register LoopMuxRegs. CPCTRL. bit. THRESH_SEL used for in CPCC mode? Looking forward to your reply, thank you!

over 6 years ago

0 Ian Bower over 6 years ago

TI__Genius 17090 points

An expert should be contacting you shortly

0 Sean Xu over 6 years ago in reply to Ian Bower

TI__Genius 14580 points

First, this bit is used to select EADC SAR mode for determine CC, CP, or CV .

Second, if you use loop oring to determine CC or CV, this bit is not used. Our EVM used this control.

0 user4768560 over 6 years ago in reply to Sean Xu

Intellectual 375 points

Thank you for your answer! Because I want to use the CP mode, how can I configure this THRESH_SEL register? The specification says "Configures input threshold selected for use in Constant Power comparison". But I don't understand what is compared with THRESH_SEL. What effect does it have after comparison? I look forward to your detailed answer, thank you very much!

0 Sean Xu over 6 years ago in reply to user4768560

TI__Genius 14580 points

In CP mode, THRESH_SEL is not used. In the standard interrupt, use ADC to sample output voltage and output current. The firmware code calculate the voltage setting for max power, then it changes the voltage setting.

0 user4768560 over 6 years ago in reply to Sean Xu

Intellectual 375 points

Thank you for your reply. Could you tell me how THRESH_SEL is used? Looking forward to your reply!

0 Sean Xu over 6 years ago in reply to user4768560

TI__Genius 14580 points

Please refer to programer manual.

THRESH_SEL R/W 000 Configures input threshold selected for use in Constant Power comparison 0 = Filter 0 Output Selected (Default) 1 = Filter 1 Output Selected 2 = Filter 2 Output Selected 3 = Front End 0 Absolute Value Data Selected 4 = Front End 1 Absolute Value Data Selected 5 = Front End 2 Absolute Value Data Selected

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UCD3138FW-PSFB: Question about CPCC