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Controladores para LED de retroiluminación

TPS92391

ACTIVO

Controlador LED de alto rendimiento de atenuación Boost/SEPIC con seis canales de 200 mA

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TPS92391

ACTIVO
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Detalles del producto

Number of channels 6 Vin (min) (V) 3 Vin (max) (V) 48 Vout (min) (V) 1 Switching frequency (max) (kHz) 2200 LED current per channel (mA) 200 Topology Boost, Current Sink Features Adjustable Switch Frequency, Analog Dimming, Analog/PWM mixed dimming, Enable/Shutdown, Fault Detection, I2C control, OVP, PWM control, Programmable output current, Soft Start, Thermal shutdown Operating temperature range (°C) -40 to 125 Rating Catalog
Number of channels 6 Vin (min) (V) 3 Vin (max) (V) 48 Vout (min) (V) 1 Switching frequency (max) (kHz) 2200 LED current per channel (mA) 200 Topology Boost, Current Sink Features Adjustable Switch Frequency, Analog Dimming, Analog/PWM mixed dimming, Enable/Shutdown, Fault Detection, I2C control, OVP, PWM control, Programmable output current, Soft Start, Thermal shutdown Operating temperature range (°C) -40 to 125 Rating Catalog
VQFN (RHB) 32 25 mm² 5 x 5
  • Input voltage operating range 3 V to 48 V
  • Six high-precision current sinks
    • Up to 200-mA DC current for each current sink
    • Current matching 1% (typical)
    • Dimming ratio 32 000:1 using 152-Hz LED output PWM frequency
    • Up to 16-bit LED dimming resolution with I2C, or PWM input
    • 8 Configurable LED strings configuration
  • Auto-phase shift PWM dimming
  • 12-bit Analog dimming
  • Switching frequency 100 kHz to 2.2 MHz
  • Boost spread spectrum for reduced EMI
  • Boost sync input to set boost switching frequency from an external clock
  • Up to 48-V VOUT boost or SEPIC DC/DC controller
    • Switching frequency 100 kHz to 2.2 MHz
    • Boost spread spectrum for reduced EMI
    • Boost sync input to set boost switching frequency from an external clock
  • Extensive fault diagnostics
  • Input voltage operating range 3 V to 48 V
  • Six high-precision current sinks
    • Up to 200-mA DC current for each current sink
    • Current matching 1% (typical)
    • Dimming ratio 32 000:1 using 152-Hz LED output PWM frequency
    • Up to 16-bit LED dimming resolution with I2C, or PWM input
    • 8 Configurable LED strings configuration
  • Auto-phase shift PWM dimming
  • 12-bit Analog dimming
  • Switching frequency 100 kHz to 2.2 MHz
  • Boost spread spectrum for reduced EMI
  • Boost sync input to set boost switching frequency from an external clock
  • Up to 48-V VOUT boost or SEPIC DC/DC controller
    • Switching frequency 100 kHz to 2.2 MHz
    • Boost spread spectrum for reduced EMI
    • Boost sync input to set boost switching frequency from an external clock
  • Extensive fault diagnostics

The TPS92391 is an automotive high-efficiency LED driver with boost controller. The Six high-precision current sinks support phase shifting that is automatically adjusted based on the number of channels in use. LED brightness can be controlled globally through the I²C interface or PWM input.

The boost controller has adaptive output voltage control based on the headroom voltages of the LED current sinks. This feature minimizes the power consumption by adjusting the boost voltage to the lowest sufficient level in all conditions. A wide-range adjustable frequency allows the TPS92391 to avoid disturbance for AM radio band.

The TPS92391 supports built-in hybrid PWM dimming and analog current dimming, which reduces EMI, extends the LED lifetime, and increases the total optical efficiency.

The TPS92391 is an automotive high-efficiency LED driver with boost controller. The Six high-precision current sinks support phase shifting that is automatically adjusted based on the number of channels in use. LED brightness can be controlled globally through the I²C interface or PWM input.

The boost controller has adaptive output voltage control based on the headroom voltages of the LED current sinks. This feature minimizes the power consumption by adjusting the boost voltage to the lowest sufficient level in all conditions. A wide-range adjustable frequency allows the TPS92391 to avoid disturbance for AM radio band.

The TPS92391 supports built-in hybrid PWM dimming and analog current dimming, which reduces EMI, extends the LED lifetime, and increases the total optical efficiency.
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TPS92390 ACTIVO Controlador LED de alto rendimiento de atenuación Boost/SEPIC con cuatro canales de 200 mA TPS92391 and TPS92390 are hardware compatible

Documentación técnica

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* Data sheet TPS92391 Boost/SEPIC High Dimming Performance LED Driver with Six 200-mA Channels datasheet PDF | HTML 11 mar 2021

Diseño y desarrollo

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Placa de evaluación

LP8866EVM — Módulo de evaluación del controlador LED LP8866-Q1 para pantallas de automóviles de 6 canales

The LP8866EVM helps designers to evaluate the characteristics, operation, and performance of the LP8866(S)-Q1 device, a 6-channel high-efficiency LED driver for automotive display LED backlighting. The LP8866(S)-Q1 device integrates a boost or SEPIC controller and six high-precision current sinks. (...)

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PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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VQFN (RHB) 32 Ultra Librarian
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