Power Supply Design Considerations For Patient Monitoring Patches

by Fahad Masood, Analog Devices, Austin, Texas, How2Power Today, Mar 15 2022

Focus:
Remote patient monitors are continuously evolving to include more features that enable doctors to gain greater insights into their patients’ health. These features create greater demands on the single-cell batteries that power the monitors. This article provides a power supply solution based on the MAX38640A buck regulator for an ECG remote patient monitoring patch that preserves battery life to take advantage of these features. The article also presents strategies to accurately estimate battery life for a remote patient monitor as well as ways to extend the battery life of the remote patient monitor before it is even powered on. These include use of mechanical or electronic battery seals to combat battery drain while the product is sitting on the shelf prior to first use.

What you’ll learn:

• How to estimate in battery life (runtime) in patient monitoring patches and other battery applications
• How to extend battery life in single-cell battery applications using mechanical or electronic battery seals

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