RTOS/CC3200: DCDC_PA_OUT is not normal when CC3200 works at AP mode, it goes to 0 Voltage.

cindy wang89

Part Number: CC3200
Other Parts Discussed in Thread: CC3100

Tool/software: TI-RTOS

Hi, sir,

My customer's CC3200 6 layer board works unnormal, the voltage of 'VDD_DIG & DCDC_PA_OUT' is about 0 V, could you please give me a suggestion about how this could be occur? thanks. 1st layer for component and routing , 2nd layer for ground, 3rd for routing the power lines to the device , 4th for power + signal lines, 5th for ground, 6th for component and routing line

over 6 years ago

0 Austin Tanner over 6 years ago

TI__Expert 8255 points

Hi Cindy,

From your description above, I think I only understand the symptoms of the problem. Can you provide some additional information such as: is the device turning on, have you reviewed the power lines and are they supplying adequate power?

I'd recommend reviewing the schematic design checklist. Follow the link below -> select the link to download "CC3100 and CC3200 PCB Layout Guidelines" -> open excel sheet and navigate to CC3200R tab

0 cindy wang89 over 6 years ago in reply to Austin Tanner

Intellectual 475 points

Hi, Austin Tanner,
Thanks for your reply. We supply the power normally, and have tested the power according to the Hardware Design Review, the power noise is within the limitation.

0 Austin Tanner over 6 years ago in reply to cindy wang89

TI__Expert 8255 points

Hi Cindy thanks for clarifying. Is there any update after doing the reviewing the schematic review?

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RTOS/CC3200: DCDC_PA_OUT is not normal when CC3200 works at AP mode, it goes to 0 Voltage.