A power MOSFET is one of those components that almost nobody thinks about and almost everything with a motor depends on. It is the switch that turns electricity on and off inside an electric vehicle, a robot arm, or a solar inverter. The “Elon Musk’s NEW AI Masterplan” pitch from Brownstone Research’s Near Future Report leans on these chips heavily, because its applications pick, onsemi, is one of the largest makers of them in the world.
The pitch opens with a promise that buying three “secret” stocks can “unleash enough wealth to make every household in America $2.38 million.” The part of that story that actually rests on solid engineering is the power MOSFET, so it is worth understanding what these chips do before deciding whether the stock story holds up.
What a power MOSFET actually does
MOSFET stands for metal-oxide-semiconductor field-effect transistor. In plain terms, it is a switch controlled by voltage. Apply a small voltage to the gate, and the switch closes, letting a large current flow from source to drain. Remove it, and the switch opens. A power MOSFET is a version built to handle big currents and high voltages while switching on and off millions of times per second.
What makes a good power MOSFET is how little energy it wastes. Every time it switches, a tiny bit of energy turns into heat. Multiply that by thousands of switches per second across a whole vehicle, and small inefficiencies add up to lost range and extra cooling. The whole design goal is to switch fast and clean, with low resistance and minimal heat.
Why EVs and robots need them
An electric vehicle is, at its core, a battery feeding a motor through a set of switches. The inverter that converts the battery’s direct current into the alternating current the motor needs is built out of power MOSFETs and their cousins, IGBTs. The better those switches are, the more of the battery’s energy reaches the wheels.
A humanoid robot is the same problem in miniature, repeated across dozens of joints. Every motor in a robot arm or leg needs its own set of switches to control speed, torque, and direction. The Masterplan pitch makes exactly this point, arguing that onsemi’s power-management chips will let the Optimus robot “move efficiently, stay cool, and run longer without needing to stop and recharge as often.” That is an accurate description of what a well-made power MOSFET does.
Where onsemi fits in
onsemi is the second-largest power chipmaker in the world, and its portfolio spans discrete power MOSFETs, IGBTs, and the modules that package many of them together. Its silicon goes into electric-vehicle drivetrains, automotive safety systems, and industrial energy infrastructure. It is also one of the biggest suppliers of image sensors to the automotive market, which is a separate strength the pitch leans on.
The pitch’s specific claim is that onsemi is “already supplying Tesla with a key piece of sensor technology.” That relationship is real, and it is plausible that it could extend to Optimus. Morgan Stanley has flagged onsemi as a way to play the robotics trend.
The gap between the chip and the stock
The honest caveat is the same one that applies to the whole pitch. onsemi trades at about 18 times forward earnings with a roughly $28 billion market cap, and its tease price equals the current close of $71.67. That means this is a re-pitch at the current price, not a fresh discovery. Today its revenue is overwhelmingly automotive and industrial, not robots, and the Optimus program is years away from shipping in volume.
There is also a marquee number in the ad that does not survive contact with reality. The “$500 billion in 2027” figure is aimed at ASML, the chip-equipment maker whose annual revenue is around $30 billion. It is a rhetorical flourish, not a forecast.
The takeaway
Power MOSFETs are the unglamorous foundation of the electrification story, and onsemi is a genuine leader in making them. The mechanism the pitch describes is real. The timeline and the headline numbers are where the marketing gets ahead of the engineering. If you want to read further, our physical AI explainer covers the theme, and our Tesla Optimus coverage walks through the robot angle in more detail.
The offer is worth stating plainly. The Near Future Report costs $179 for the first year and renews at $199, with a 30-day refund window, so you can read the full reports and ask for your money back if they do not hold up. Subscribing unlocks the special report the pitch is built around, the “Manifested AGI Revolution,” which names the stocks the ad teases. The fine print worth remembering is that these are large, well-covered companies trading near their current prices, not the “secret” the headline suggests.
Ready to see the research? Click here to view the Elon Musk’s AI Masterplan presentation.
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