Simple circuit design tutorial for PoE applications - EE Times

PoE Detector for IEEE 802.3 or Passive PoE - Quickly Identify Power Over Ethernet; Display Indicates Passive or 802.3af/at; 24v, 48v, or 56v; and Mode B Reverse Polarity

Reference Design: Low-EMI Class 4 PD - Solution for PoE Applications - EEWeb

Simple circuit design tutorial for PoE applications - EE Times

E-Scooter Reference Design, Reference Design

Simplifying BLDC Motor Control with Integrated ICs

Silicon PTCs Alleviate Thermistor Design Issues

Signal Chain Design Guide by Microchip Technology Datasheet

Reference Designs

I2C Voltage Level Translators for Serial Communications