In the early days, in-car lighting was dominated by functional fixtures like reading lamps, merely meeting basic illumination needs. Subsequently, ambient light strips and star‑roof designs became widespread, and lighting‑and‑shadow design began to emphasize the creation of an immersive cabin atmosphere. With the deepening of the ecological concept of people and cars, the car cockpit has become an extension of home life. The car has multiple usage scenarios such as office processing, audio-visual entertainment, reading and writing, etc,It is no longer a simple transportation carrier, but a mobile living space.
Figure 1 Vehicle lighting scheme display
Figure 2 Vehicle lighting scheme display
This also puts forward new advanced requirements for the vehicle light environment, and the lighting design is gradually evolving towards the home style. In addition to ensuring the basic lighting function, it is necessary to take into account the multiple values of comfortable body feeling, convenient control, intelligent interaction and healthy eye protection, which puts forward higher requirements for the light environment in the car.
New requirements for vehicle light environment
1. Adjustable color temperature: the whole scene temperature adjustment, warm light, neutral light, cold light to adapt to different application scenarios.
· Warm light (2700K-3500K)
It is suitable for rest and relaxation, parking and driving at night. The light is soft and soothing, relieving visual fatigue and setting off a warm home atmosphere.
· Neutral light (4000K-4500K)
It is suitable for daily driving, reading in the car, handwritten records, light and shadow to fit the natural light texture, clear and not dazzling, taking into account comfort and practicality.
· Cold light (5000K-6500K)
Audio and video watching, fine operation scene, light through clear, refreshing, improve concentration and reaction efficiency.
2. No stroboscopic: The driving output current is stable, the light and shade are not periodically jittered, and the naked eye and camera equipment are observed without flicker, which can bring the following effects:
Reading, writing and consulting materials in the car, eyes are not easy to swell and fatigue after long-term use.
Avoid hidden stroboscopic stimulation and protect the eye health of drivers and passengers.
3. A- level illuminance: sufficient brightness, effortless reading and writing, reduced squinting and visual fatigue, and met the requirements of long-term reading/writing health.
4, anti-blue light: reduce the amount of exposure to blue light, protect eye health, from the source to reduce the risk of retinal damage.
5. Car gauge quality: components from lamp beads to lamp drive IC all need car gauge certification to ensure driving safety.
AW21036QPY-Q1 Program Advantages
The light environment in the car needs to be comprehensively considered from the aspects of device selection, optical design, car structure, etc. AWINIC has a variety of models to choose from for lamp drive devices.
A few days ago, AW21036QPY-Q1 car gauge chip successfully selected "2026 domestic car gauge chip New Top 30 」! 2026 AEIF's 13th Automotive Electronics Innovation Conference released the "Domestic Vehicle Gauge Chip Reliability Classification Catalog (2026)", and AWINIC was successfully selected for a number of self-developed vehicle Gauge chips,Covering the three core categories of LED drive, signal chain and RF front-end, AW21036QPY-Q1 is one of the car-grade LED Drive chips on the list. A number of authoritative recognition, fully confirmed AWINIC for electronics in the Smart car and car regulation chip localization track benchmark position, as well as the product's excellent reliability and landing ability.
Buick to mirror E7 eye-protecting smart dome light uses this AWINIC AW21036QPY-Q1, which has passed the AEC-Q100 vehicle regulation certification. Its application in vehicle health lighting has the following advantages:
1. Dual mode dimming compatible
DC dimming mode: directly change the size of the driving current to realize smooth brightness transition, eliminate stroboscopic from the root, keep the light stable, completely avoid dominant/recessive stroboscopic, and the EMI/EMC interference is small, which is the first choice for healthy lighting.
PWM dimming mode: supports 256-level duty cycle adjustment, the instantaneous working current remains unchanged, and the average brightness is controlled by high-speed repeated on and off. There are high-frequency bright and dark alternations, and sensitive people will feel tired.
The chip allows the PWM duty cycle to be set to 100 when the brightness requirement is met. At this time, the brightness is adjusted only by DC current, completely avoiding EMI interference introduced by PWM.
2. Built-in high-precision constant current source
The chip has a built-in high-precision constant current source (accuracy up to 6%), which ensures high stability of current output and avoids uneven brightness caused by current fluctuation. Each circuit can output up to 50mA current, supports multi-channel parallel output, and the output current can be larger. Continuous output of uniform light, will not cause discomfort, light flickering,Reading, writing line of sight repeatedly adapt to the brightness, easily distracted, dizziness.
3. Channel current independently controllable
The AW21036QPY-Q1 supports 256-level global current regulation, 256-level DC current and 256-level PWM current. Each channel can be controlled independently, with flexible regulation and adaptation to various vehicle lighting schemes.
Car adjustable color temperature lighting, commonly used double color temperature LED module.
Two sets of lamp beads: warm white LED(2700K ~ 3500K)+ cold white LED(5000K ~ 6500K)
Color temperature change = change the current ratio of two lamp beads, mix out different neutral light, AW21036QPY-Q1 support each channel independently adjustable, to change the current ratio of two color temperature lamps.
Fig.1 Block diagram of AW21036QPY-Q1 application
Table 1 List of AW21036QPY-Q1 characteristics
Fig. 2 AWINIC : the Interior Health lighting scheme
AWINIC atmosphere lamp driver Product Features
For more than 15 years in the field of electronic deep-cultivated breathing lamp products, AWINC - the lamp language.®Has set a benchmark for lighting efficiency in the industry. It not only provides single/multi-RGB static and dynamic atmosphere light drive, but also integrates the artistic AWINIC cell Moncell®Breathing Light effect algorithm, and the featured awinic AudioSync®Music rhythm algorithm and SoC products,Can achieve "lights with the sound", "Comet tail", "Ambilight" and other colorful lights, summed up the following characteristics:
01. Precise light efficiency control
02. Sound and light linkage experience
03. Colorful emotional expression
Figure 3 Phantom effect
Figure 4 AWINIC Monsell®Breathing light effect
As China's digital model leader,AWINIC has a rich product line of Breathing Light drive chips, has a complete solution capability in the field of vehicle lighting, covers the design requirements of diversified scenes in all directions, and provides flexible and reliable technical support for various applications. Table 2 is the recommended material.
Table 2 AWINIC recommended material
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