Acebeam E70 CRI (FC40) :
Again it’s based on the MP3429, 12V output for this version, I believe the XHP70.2 version is 6V.
What is interesting is that they use a second higher value (0.25Ω, 2x 0.5Ω weirdly) sense resistor for the moonlight mode, like my drivers and Zebralight’s (usually they use 3). The low value high power sense resistor is 10mΩ + the ON resistance (3mΩ) of the NFET (AON7520) used to switch between the two.
The turbo output starts to decrease below 3.5V and reach ”high” output around 3.2V, this isn’t a limit of the boost IC but a firmware limit.
The reverse polarity protection PFET is an AON7423 (3333 package), this seems to be a common one, seen on Thrunite, Convoy and Acebeam drivers.
Inductor is 7.5x6x5mm, 1uH.
The efficiency is not very good in moonlight low and mid 1 because they decided to use FCCM (fixed frequency PWM) instead of PSM or USM (usually this one is used used) so relatively a lot of power is wasted at low output, bad choice.
Another strange choice is the tantalum capacitors for the input, I thought they were more expensive than MLCCs and two 1206 MLCCs would have been adequate here.
I forgot to take a picture but there is an aluminium post in the driver cavity above the boost IC with a thermal pad to improve thermal dissipation, that’s a very good decision especially with the fairly high output for this converter.