Allegro MicroSystems launches a single-chip 48-volt power chip it says cuts the parts bill by up to half

On November 5, Allegro MicroSystems▼−5.49% — Allegro MicroSystems, down 5.49 percent today (Nasdaq: ALGM), the New Hampshire maker of magnetic sensor and power chips, announced the four parts it wants inside the steering and braking electronics of 48-volt cars: two motor gate drivers that share one board footprint and software register map across 12-volt and 48-volt platforms, a magnet-free steering torque sensor, and the A81481, which Allegro calls the industry's first single-chip true 48-volt power management IC ¹.

The A81481 packs two buck converters, five low-dropout regulators and top-grade ASIL D safety diagnostics, the strictest automotive functional-safety level, onto one die where today's designs stack several chips, and Allegro says it cuts the 48-volt parts bill by up to 50% ¹. The portfolio is on the floor at electronica in Munich through today, November 13 ¹.

Cars still pay the bills

The greeting was a beating. ALGM closed launch day down 14.2% at $26.80 after five banks cut their price targets by an average of 13.8%, Evercore's▲+0.34% — Evercore, up 0.34 percent today from $53 to $40 ². That followed a October 29 drop of about 7%, which came despite a quarter that beat every estimate ³.

Cars remain the base of the business: $172.5 million of the September quarter's $276.9 million in sales↗, about 62%, while data-center-driven industrial sales jumped 79% ⁴. The Inference covered that print on October 29; the open question was where car content growth comes from ⁴.

As automakers rewire cars into 48-volt zones, grouping electronics by location to shed copper weight, the steering and braking power sockets are being assigned, and Texas Instruments▼−3.81% — Texas Instruments, down 3.81 percent today already sells its own broad 48-volt line↗, including a preview three-phase gate driver that overlaps Allegro's new parts ⁵. Automotive World↗ frames the bet plainly: that automakers will pay for one design spanning both voltages ⁶.

What the cuts were pricing

The December-quarter guide↗ is the sore point. Sales of $278 million to $288 million imply growth slowing to 23% from 29%, and after the run-up investors wanted more than a 2% step up ³. Against that, design wins came in at their highest level since the 2020 IPO, up nearly 40%, and bookings rose for an eighth straight quarter ⁴.

A claim is not a socket

None of the launch is booked revenue. The 50% saving is Allegro's own figure, the same number it attached to the same A81481 at its October 20 debut in humanoid robots↗ ⁷. Insiders sold $5.2 million of stock over the past year without buying, and the trailing price-to-earnings multiple stands at 195.8 ⁸.

On the other side sit the cut targets, still averaging $44 against a $32.11 close on November 11, and a seven-day rebound of 18.3% that analysts partly credit to this portfolio before a chip-heavy slide left the shares at $29.94 by midday today ²⁸⁹⁷.

The December quarter is the tell: gross margin at the 52.5% top of the guide, and 48-volt steering or braking sockets named as design wins ³. A steering socket is won once, and the chip that wins it ships for the life of the platform.