The design’s adaptability and sturdy options make it a good selection for builders trying to create dependable, dynamic lighting options in automotive and different demanding industrial environments.
The automotive lighting trade faces more and more subtle necessities for dynamic efficiency in tail lamp programs. In response, this reference design introduces a complete answer tailor-made for rear lights in automobiles, incorporating superior elements to handle and improve performance. This holistic method to tail lamp design consists of the combination of a cease lamp (SL), flip lamp (TL), and facet mark lamp (SML), every independently pushed by one in all three MPQ7221 gadgets. This reference design is ideally fitted to use in automotive tail lights and turning lights and extends to broader functions in automotive energy programs and even industrial programs.
The reference design by Monolithic energy consists of the MPQ7221, a pivotal component is a 16-channel present sink LED driver. It helps a broad enter voltage vary from 4.5V to 16V, catering to various automotive energy programs. Every channel’s LED present could be exactly managed as much as 80mA via an exterior resistor, permitting for detailed customization of the sunshine output. This driver additionally presents subtle management options together with 6-bit analog dimming and 12-bit pulse-width modulation (PWM) dimming per channel. These options are important for attaining the specified visible results and depth ranges in automotive tail lights, notably as they permit for adjustable PWM dimming frequencies at 220Hz, 250Hz, 280Hz, or 330Hz.
It enhances system reliability and efficiency with its built-in fault detection capabilities, corresponding to LED open and brief safety, under-voltage lockout (UVLO), and over-temperature safety (OTP). These safeguards be sure that the lighting system operates successfully below varied circumstances with out failure. Moreover, the gadget options an I2C interface with as much as 10 completely different configurable addresses through an exterior resistor, facilitating advanced and dynamic lighting results whereas enabling communication with different system elements.
The design features a buck converter (MPQ4323) and a low-dropout (LDO) regulator (MPQ2013A) for secure and environment friendly energy provide. A microcontroller unit (MCU) (KEA8) directs the rear lights’ dynamic elements, syncing lighting modifications primarily based on automobile habits and driver inputs. The chosen packaging for the design is a QFN-24 (4mm x 4mm) with wettable flanks, not solely facilitates sturdy soldering however can also be AEC-Q100 Grade 1 licensed, underscoring its suitability for harsh automotive environments. This packaging ensures that the gadget can stand up to the thermal and mechanical stresses typical in automotive functions.
Monolithic Energy has examined this reference design. It comes with a invoice of supplies (BOM), schematics, and so on. You will discover further information concerning the reference design on the corporate’s web site. To learn extra about this reference design, click on right here.
