High-Brightness LED Matrix Manager for Automotive Headlight Systems TPS92661-Q1
【产品特性】‧12 Series LED Bypass Switches
‧Multi-Drop UART Communication Interface
‧Programmable 10-bit PWM Dimming
‧Individual Turn-on and Turn-off Times
‧Inherent Phase Shift Capability
‧LED Open/Short Detection and Protection
‧AEC-Q100 Grade 1
【产品应用】• Automotive headlight systems
• High-Brightness LED Matrix Systems
【文字介绍】The TPS92661 device is a compact, highly-integrated solution for shunt FET dimming for large arrays of high-brightness LEDs in applications such as automotive headlights.
The TPS92661 device includes a 12-switch series array for bypassing individual LEDs in the string and a serial communication interface for control and management by a master microcontroller.
An on-board charge pump rail that can float up to 67 V above GND provides the LED bypass switch gate drive.The low on-resistance (RDS(on)) of the bypass switch minimizes conduction loss and power dissipation.
The TPS92661 device contains a multi-drop universal asynchronous receiver transmitter (UART) for serial communication. The turn-on and turn-off times are programmable for each individual LED in the string. The PWM frequency is adjustable via an internal register and multiple devices can be synchronized to the same frequency and phase.