TPS92661-Q1 Datasheet | Texas Instruments

Features - 1 12 Series LED Bypass Switches - Multi-Drop UART munication Interface - Programmable 10-bit PWM Dimming - Individual Turn-on and Turn-off Times - Inherent Phase Shift Capability - Device-to-Device Synchronization - LED Open/Short Detection and Protection - Fault Reporting - AEC-Q100 Grade 1 - Thermally Enhanced Package - 48-pin, TQFP, Exposed Pad Package 2 Applications - Automotive headlight systems - High-Brightness LED Matrix Systems 3 Description The TPS92661 device is a pact, 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 munication 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 munication. 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. The TPS92661 device features open LED protection as well as open and short LED fault reporting via the serial interface. The TQFP package features a feed-through topology to enable easy routing of signals on single-layer metal core LED load boards. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) PHP (48) 7.00 mm × 7.00 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Simplified System Schematic Driver Module LED Module VBAT Boost Voltage Regulator DC Voltage Rail Buck Current Regulator 3.3-V or 5-V Auxiliary Voltage Regulators 5V 3.3 V Buck...