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TPS92691

ACTIVO

Controlador LED de multitopologías con amplificador de detección de corriente rail-to-rail TPS92691

Detalles del producto

Input voltage type DC/DC Topology Boost, Buck, Buck-Boost, Cuk, Flyback, SEPIC Vin (min) (V) 4.5 Vin (max) (V) 65 Vout (max) (V) 65 Vout (min) (V) 3 Iout (max) (A) 5 Iq (typ) (mA) 1.5 Features Adjustable Switch Frequency, Synchronization Pin, Thermal shutdown Operating temperature range (°C) -40 to 125 Dimming method Analog, PWM Number of channels 1 Rating Catalog
Input voltage type DC/DC Topology Boost, Buck, Buck-Boost, Cuk, Flyback, SEPIC Vin (min) (V) 4.5 Vin (max) (V) 65 Vout (max) (V) 65 Vout (min) (V) 3 Iout (max) (A) 5 Iq (typ) (mA) 1.5 Features Adjustable Switch Frequency, Synchronization Pin, Thermal shutdown Operating temperature range (°C) -40 to 125 Dimming method Analog, PWM Number of channels 1 Rating Catalog
HTSSOP (PWP) 16 32 mm² 5 x 6.4
  • Wide Input Voltage: 4.5 V to 65 V
  • Wide Output Voltage Range: 2 V to 65 V
  • Low Input Offset Rail-to-Rail Current Sense Amplifier
    • Better than ±3% LED Current Accuracy over 25°C to 140°C Junction Temperature Range
    • Compatible With High-Side and Low-Side Current Sense Implementations
  • High-Impedance Analog LED Current Adjust Input (IADJ) With over 15:1 Contrast Ratio
  • Over 1000:1 Series FET PWM Dimming Ratio With Integrated Series N-Channel Dim Driver Interface
  • Continuous LED Current Monitor Output for System Fault Detection and Diagnoses
  • Programmable Switching Frequency With External Clock Synchronization Capability
  • Programmable Soft-Start and Slope Compensation
  • Comprehensive Fault Protection Circuitry Including VCC Undervoltage Lockout (UVLO), Output Overvoltage Protection (OVP), Cycle-by-Cycle Switch Current Limit, and Thermal Protection
  • TPS92691-Q1: Automotive Q100 Grade 1 Qualified
  • Wide Input Voltage: 4.5 V to 65 V
  • Wide Output Voltage Range: 2 V to 65 V
  • Low Input Offset Rail-to-Rail Current Sense Amplifier
    • Better than ±3% LED Current Accuracy over 25°C to 140°C Junction Temperature Range
    • Compatible With High-Side and Low-Side Current Sense Implementations
  • High-Impedance Analog LED Current Adjust Input (IADJ) With over 15:1 Contrast Ratio
  • Over 1000:1 Series FET PWM Dimming Ratio With Integrated Series N-Channel Dim Driver Interface
  • Continuous LED Current Monitor Output for System Fault Detection and Diagnoses
  • Programmable Switching Frequency With External Clock Synchronization Capability
  • Programmable Soft-Start and Slope Compensation
  • Comprehensive Fault Protection Circuitry Including VCC Undervoltage Lockout (UVLO), Output Overvoltage Protection (OVP), Cycle-by-Cycle Switch Current Limit, and Thermal Protection
  • TPS92691-Q1: Automotive Q100 Grade 1 Qualified

The TPS92691/-Q1 is a versatile LED controller that can support a range of step-up or step-down driver topologies. The device implements a fixed-frequency peak current mode control technique with programmable switching frequency, slope compensation, and soft-start timing. It incorporates a high voltage (65-V) rail-to-rail current sense amplifier that can directly measure LED current using either a high-side or a low-side series sense resistor. The amplifier is designed to achieve low input offset voltage and attain better than ±3% LED current accuracy over junction temperature range of 25°C to 140°C and output common-mode voltage range of 0 to 60 V.

LED current can be independently modulated using either analog or PWM dimming techniques. Linear analog dimming response with 15:1 range is obtained by varying the voltage from 140 mV to 2.25 V across the high impedance analog adjust (IADJ) input. PWM dimming of LED current is achieved by modulating the PWM input pin with the desired duty cycle and frequency. Optional DDRV gate driver output can be used to enable series FET dimming functionality to get over 1000:1 contrast ratio.

The TPS92691/-Q1 supports continuous LED status check through the current monitor (IMON) output. This allows for LED short circuit or open circuit detection and protection. Additional fault protection features include VCC UVLO, output OVP, switch cycle-by-cycle current limit, and thermal protection.

The TPS92691/-Q1 is a versatile LED controller that can support a range of step-up or step-down driver topologies. The device implements a fixed-frequency peak current mode control technique with programmable switching frequency, slope compensation, and soft-start timing. It incorporates a high voltage (65-V) rail-to-rail current sense amplifier that can directly measure LED current using either a high-side or a low-side series sense resistor. The amplifier is designed to achieve low input offset voltage and attain better than ±3% LED current accuracy over junction temperature range of 25°C to 140°C and output common-mode voltage range of 0 to 60 V.

LED current can be independently modulated using either analog or PWM dimming techniques. Linear analog dimming response with 15:1 range is obtained by varying the voltage from 140 mV to 2.25 V across the high impedance analog adjust (IADJ) input. PWM dimming of LED current is achieved by modulating the PWM input pin with the desired duty cycle and frequency. Optional DDRV gate driver output can be used to enable series FET dimming functionality to get over 1000:1 contrast ratio.

The TPS92691/-Q1 supports continuous LED status check through the current monitor (IMON) output. This allows for LED short circuit or open circuit detection and protection. Additional fault protection features include VCC UVLO, output OVP, switch cycle-by-cycle current limit, and thermal protection.

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Documentación técnica

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Tipo Título Fecha
* Data sheet TPS92691/-Q1 Multi-Topology LED Driver With Rail-to-Rail Current Sense Amplifier datasheet PDF | HTML 11 dic 2015
EVM User's guide TPS92691 Boost and Boost-to-Battery LED Driver Evaluation Board 11 mar 2016
Technical article Driving LEDs: topology matters PDF | HTML 26 feb 2016
EVM User's guide TPS92691 SEPIC LED Driver Evaluation Board 09 dic 2015

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Placa de evaluación

TPS92691EVM-001 — Placa de evaluación de controlador LED SEPIC TPS92691

The TPS92691EVM-001 is a fully assembled and tested SEPIC LED driver designed to power a single string of series connected LEDs. Acurate closed-loop LED current regulation is achieved using a low-offset rail-to-rail curren sense amplifier that is compatible with either a high side or a low side (...)

Guía del usuario: PDF
Placa de evaluación

TPS92691EVM-752 — Placa de evaluación de controlador LED de impulso y aumento de potencia a batería TPS92691-Q1

The TPS92691EVM-752 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 (...)

Guía del usuario: PDF
Modelo de simulación

TPS92691-Q1 Boost and SEPIC PSpice Transient Model (Rev. A)

SLVMBE8A.ZIP (153 KB) - PSpice Model
Herramienta de cálculo

SLVC671 TPS92691 Boost Design Calculator

Productos y hardware compatibles

Productos y hardware compatibles

Productos
Controladores LED de iluminación
TPS92691 Controlador LED de multitopologías con amplificador de detección de corriente rail-to-rail TPS92691
Controladores para LED en automóviles
TPS92691-Q1 Controlador LED de multitopologías con amplificador de detección de corriente rail-to-rail para auto
Herramienta de simulación

PSPICE-FOR-TI — PSpice® para herramienta de diseño y simulación de TI

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 (...)
Diseños de referencia

PMP15003 — Diseño de referencia de controlador LED regulable para barras de luz, luces puntuales y reflectores

This in an automotive boost LED driver designed to drive an LED string of up to 34V at a maximum of 34W of output power. This solution as designed passes CISPR 25 class 3 EMC requirements and is capable of 10:1 analog dimming. High side current sensing allows one end of the LED string to be tied (...)
Test report: PDF
Esquema: PDF
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
HTSSOP (PWP) 16 Ultra Librarian

Pedidos y calidad

Información incluida:
  • RoHS
  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

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Soporte y capacitación

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