Diodes (Nasdaq: DIOD) launched the AL8859Q, a multi‑phase SPI boost controller for automotive headlight control units. It serves as a constant‑voltage front stage for adaptive front‑lighting systems and other vehicle power applications.
Key specs:
4.5V to 60V input – fits 5V, 12V, 24V, and 48V automotive rails
Two‑phase output per chip; multiple devices scale to three or four phases – delivers 100W to 400W
System efficiency up to ~95% with balanced thermal distribution and low ripple current
SPI interface – programmable output voltage, switching frequency, current limit, protection thresholds. One‑time programmable memory enables fail‑safe or standalone operation, reducing MCU dependency.
Built‑in diagnostics: thermal warning/shutdown, OVP, UVLO, current limit, SPI error detection, VDRIVE monitoring
Spread spectrum frequency modulation meets CISPR 25 Class 5 EMI without large external filters
±0.5% voltage accuracy at 50V (typical) – stable supply for LED drivers
Package: V‑QFN4040‑24/SWP (4mm×4mm) with wettable flanks for AOI
The AL8859Q targets demanding automotive headlight applications, offering high power density, efficiency, and functional safety readiness.
ICgoodFind: AL8859Q delivers flexible, efficient boost control for adaptive headlights and beyond.
