Tool/software:
Dear Team,
We are currently in the process of designing a board that requires a power supply with a wide input voltage range. The primary power source will be an external battery, typically providing 5V, but with potential fluctuations down to 3.8V. The board may also be powered by an external source up to 36V. Our requirement is to maintain a stable 5V output from these variable inputs. We are considering the TPS552872 buck-boost converter for this application and have a few technical questions:
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Low-Input Performance: Can the TPS552872 reliably provide a stable 5V output when the input voltage drops to 3.8V, operating in boost mode?
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EMI/EMC Mitigation: Since this is a non-isolated module, what are the best practices for board layout and component selection to minimize EMI/EMC issues?
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PGND vs. AGND: Is it advisable to separate the power ground (PGND) and analog ground (AGND) planes for EMI? If so, what are the recommended layout techniques to prevent potential noise issues from this separation?
- Reverse Voltage Protection: If a negative voltage (e.g., -36V) were accidentally applied to the input, does the component have built-in reverse voltage protection? If so, how does it provide this protection?
Also, can you share the altium project of the TPS552872EVM.
Thank you for your guidance.