Power-Supply Subsystems for Remote PPG Vital Sign Monitors

This article series is in the Power Management topic within our Series Library and the Power Supply Design topic within our TechXchange Library

A photoplethysmogram (PPG) device can be implemented to measure blood volume changes from which vital sign information such as blood oxygen levels and heart rates are derived. This two-part series presents validated SMPS designs for remote-patient vital sign monitoring applications.

Part 1 provides discrete power-supply circuit design solutions for best performance using the MAX86171 optical pulse oximeter and heart-rate sensor analog front end (AFE). Part 2 will examine an integrated solution for space-constrained applications.

• Power-Supply Subsystems for PPG Remote-Patient Vital Sign Monitors (Part 1)
• Power-Supply Subsystems for PPG Remote-Patient Vital Sign Monitors (Part 2)