Texas Instruments TPS92691EVM-752 LED Driver Evaluation Module
Texas Instruments TPS92691EVM-752 LED Driver Evaluation Module (EVM) evaluates the operation and performance of the TPS92691-Q1 and TPS92691. This module is a fully assembled and tested LED driver that can be configured as either a boost or a boost-to-battery topology to power a single string of series-connected LEDs. Accurate closed-loop LED current regulation is achieved using a low-offset rail-to-rail current-sense amplifier along with high-side current sensing implementation. DC LED current setpoint can be varied over a 15:1 ratio using the high-impedance analog adjust (IADJ) input. An integrated gate driver circuit and proprietary PWM dimming logic are incorporated in the Texas Instruments TPS92691EVM-752 to enable external series P-channel MOSFET PWM dimming with greater than 100:1 dimming ratio.
Features
- A versatile LED driver capable of driving a string of 1 to 20 series-connected white LEDs
- Wide input voltage range of 4.5V to 18V:
- Supports automotive start-stop and load dump transients up to 65V max
- Better than +/-3% LED current regulation at room temperature using a high-side current-sense resistor
- Simple circuit interface to set LED current reference and PWM duty cycle
- Instantaneous current-monitor output facilitates LED fault detection and mitigation
Related Products
Texas Instruments TPS92691/Q1 Multi-Topology LED Driver
Versatile LED controller that can support a range of step-up or step-down driver topologies.
Related Development Tool
Texas Instruments TPS92691EVM-001 SEPIC LED Driver Evaluation Board
Assembled and tested SEPIC LED driver designed to power a single string of series-connected LEDs.
Publicado: 2016-06-01
| Actualizado: 2022-03-11