Matrix Manager Lights the Way to More LEDs in Cars

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matrix manager
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As automotive designers increase the use of LED and matrix lighting, the MAX20092 LED matrix manager from Maxim Integrated Products helps them with issues related to power density, thermal intensity, and space constraints.

The safety and OEM branding value that LEDs present are compelling and driving their greater adoption in automotive front-lighting platforms. OEMs are designing in advanced safety features such as glare-free high beams along with LED and matrix lighting. However, LED lighting designers are challenged with increasing power, thermal and design complexities. Maxim designed the MAX20092 to help developers address these issues, so they can utilize more LEDs in their designs and reduce the BOM cost and solution space.

12-Switch Matrix Manager enables Matrix/Pixel automotive lighting

Maxim announced the new MAX20092 12-switch matrix manager to help designers of high-performance automotive matrix lighting and adaptive driving beam light-emitting diode (LED) applications to migrate to higher current devices while reducing solution size and improving flexibility, according to the announcement.

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The IC minimizes thermal issues associated with LED matrix lighting applications by offering a 70 mOhm internal switch resistance (RDS_ON), which the company claims is the industry’s lowest and 65 percent lower than the closest competitive solution.

Maxim says that the MAX20092 provides flexible current management for matrix and pixel lighting driving LED currents up to 1.5A.

Twelve integrated switches control LEDs in string voltages up to 56V, saving design time and reducing complexity.

Maxim also introduced MAX20096 and MAX20097 dual-channel, synchronous buck high-brightness LED controllers that work with the MAX20092, allowing designers to improve transient response times in LED lighting.

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The MAX20096 and MAX20097 claim to deliver ultra-fast transient response with near-fixed frequency with Maxim’s proprietary average current mode control scheme, minimizing EMI and enabling a reliable, high-performing design.

Key benefits

  • Integration: Reduces bill of materials (BOM) costs while saving space.
  • High Performance and Safety: Low RDS_ON of 70 mohm safely enables LED current of up to 1.5A. Features advanced fault protection and management for open, short and open-trace LED detection.
  • Flexibility: Can parallel up to 27 MAX20092 devices without daisy-chaining to manage large LED pixel count of up to 324 LEDs; allows designers to configure 1 string x 12 series switches, 2 strings x 6 series switches, and 4 strings x 3 series switches from each IC.
  • Electromagnetic Interference (EMI) Mitigation: Slew-rate control reduces EMI and noise.

The MAX20092 comes in a 5mm x 5mm TQFN package. For further information, click here.

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