TPS92661QPHPRQ1 – High brightness LED matrix manager for automotive systems

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.
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.