Building My Ultimate LED Flashlight: Boost Driver Circuit Episode #2

I'm on a quest to build my own custom flashlight, and my first step is to answer a bunch of questions I had about boost drivers. To do that, I've made myself a dev board.

This is episode 2 in the series, picking up where we left off with explaining how the flashlight boost driver works, how it is designed, how component values are calculated, and more.

Episode 1 can be found here:    • Building My Ultimate LED Flashlight: Boost...  

Get $5 credit for PCBWay's services by using this link (for new users):
https://pcbway.com/g/OkDAel

The schematics, design files and Python scripts can be found here:
https://github.com/engineerbo/flashli...

And source code for the firmware's available here:
https://github.com/engineerbo/flashli...

Chapters:
00:00 Introduction
00:22 Why 2 Current Sense Resistors?
02:01 Driving the HDR MOSFET
03:45 Smooth Brightness Ramping
05:24 Fixing Startup Flash
06:52 Mode Selection
08:49 Temperature Sensing
09:58 Battery Voltage Sensing
11:19 Op-amp Frequency Compensation
12:12 Outro