Simultaneous power supply from battery and USB - Electrical Engineering Stack Exchange
Reference Designs
Power a circuit with power supply and USB port, my solution - Electrical Engineering Stack Exchange
Power Supply from USB Port - Power Supply Circuits
USB Power Boost Circuit – Electronics Projects Circuits
USB Power Booster Circuit Electronic | Electronic Schematic Diagram
USB DC Power Supply from Cigar Lighter Socket
Build a USB-C Power Supply - Circuit Cellar
TPS2501 data sheet, product information and support | TI.com
Ensemble RX II Builders' Notes
Thingy power supply
USB based zener diode regulator circuit
Designing In USB Type-C and Using Power Delivery | DigiKey
Switching between power supplies - USB dominant - Electrical Engineering Stack Exchange
Power Supply For USB Devices Circuit Diagram
5 V PSU for USB Devices and Raspberry Pi
USB Arduino Power Supply - CircuitLab
DIY USB Power Supply
USB Power Bank Circuit Board 134N3P | All Top Notch
Power-supply circuit operates from USB port - EDN
USB Power Booster
Circuit for cigar socket type | Toshiba Electronic Devices & Storage Corporation | Europe(EMEA)
Designed a circuit to automatically switch the power supply from the two power sources (nothing designed to). | kohacraft's blog
5v Dual Power Supply Circuit
Boost Converter Switches Between Battery and USB Power
USB Power & Data Isolation | DigiKey
