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 aboveGND 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
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | High-Brightness LED Matrix Manager for Automotive Headlight Systems datasheet (Rev. A) | PDF | HTML | 12 Aug 2015 |
| White paper | LED Drivers for Automotive Exterior Applications (Rev. B) | 27 Mar 2018 | ||
| Technical article | Shining a light on op amps: considerations in LED lighting | PDF | HTML | 20 Oct 2016 | |
| Technical article | Lighting the road ahead: LEDs in automotive front lighting | PDF | HTML | 29 Sep 2016 | |
| Technical article | Improving road safety by the headlight: LED matrix manager | PDF | HTML | 20 May 2016 | |
| EVM User's guide | TPS92661EVM-001 LED Matrix Manager Evaluation Module User's Guide (Rev. A) | 24 Sep 2014 |
For additional terms or required resources, click any title below to view the detail page where available.
This evaluation board showcases the TPS92661Q LED Lighting Matrix Manager. It is intended to show the individual PWM dimming control of each LED, and is targeted at exterior automotive lighting. The board includes 2 strings of 12 LEDs at a maximum average LED current of 130mA from a DC input (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| HTQFP (PHP) | 48 | Ultra Librarian |
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