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TPS61197

NO RECOMENDADO PARA NUEVOS DISEÑOS

Controlador de WLED de cadena única para televisores LCD

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TPS61197

NO RECOMENDADO PARA NUEVOS DISEÑOS
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Detalles del producto

Number of channels 1 Vin (min) (V) 8 Vin (max) (V) 30 Vout (min) (V) 8 Vout (max) (V) 300 Type Inductive Switching frequency (max) (kHz) 800 Duty cycle (max) (%) 98 LED current per channel (mA) 1000 Peak efficiency (%) 96 Topology Boost Features Adjustable Switch Frequency, Enable/Shutdown, Fault Detection, OVP, PWM control, Thermal shutdown Operating temperature range (°C) -40 to 85 Rating Catalog
Number of channels 1 Vin (min) (V) 8 Vin (max) (V) 30 Vout (min) (V) 8 Vout (max) (V) 300 Type Inductive Switching frequency (max) (kHz) 800 Duty cycle (max) (%) 98 LED current per channel (mA) 1000 Peak efficiency (%) 96 Topology Boost Features Adjustable Switch Frequency, Enable/Shutdown, Fault Detection, OVP, PWM control, Thermal shutdown Operating temperature range (°C) -40 to 85 Rating Catalog
SOIC (D) 16 59.4 mm² 9.9 x 6
  • 8-V to 30-V Input Voltage
  • 50-kHz to 800-kHz Programmable Switching Frequency
  • Adaptive Boost Output to White-LED Voltage
  • High-Precision PWM Dimming Resolution up to 5000:1
  • Programmable Overvoltage Protection Threshold at Output
  • Programmable Undervoltage Threshold at Input with Adjustable Hysteresis
  • Adjustable Soft-Start Time Independent of Dimming Duty Cycle
  • Built-in LED Open and IFB Short Protections
  • Built-in Schottky Diode Open/Short Protection
  • Thermal Shutdown
  • 8-V to 30-V Input Voltage
  • 50-kHz to 800-kHz Programmable Switching Frequency
  • Adaptive Boost Output to White-LED Voltage
  • High-Precision PWM Dimming Resolution up to 5000:1
  • Programmable Overvoltage Protection Threshold at Output
  • Programmable Undervoltage Threshold at Input with Adjustable Hysteresis
  • Adjustable Soft-Start Time Independent of Dimming Duty Cycle
  • Built-in LED Open and IFB Short Protections
  • Built-in Schottky Diode Open/Short Protection
  • Thermal Shutdown

The TPS61197 provides highly integrated solutions for LCD TV backlighting. This device is a current-mode boost controller driving one WLED string with multiple LEDs in series. The TPS61197 adjusts the output voltage of the boost controller automatically to provide only the minimum voltage required by the LED string to generate the setting LED current, thereby optimizing the efficiency of the driver.

The device supports direct PWM brightness dimming method. During the pulse-width modulation (PWM) dimming, the white LED current is turned on and off at the duty cycle and frequency, which are determined by an external PWM signal. The PWM dimming frequency ranges from 90 Hz to 22 kHz.

The TPS61197 integrates overcurrent protection, output short-circuit protection, Schottky diode open and short protection, LED open protection, LED-string short protection, and overtemperature shutdown circuit. The device also provides programmable input undervoltage lockout (UVLO) threshold and output overvoltage protection (OVP) threshold. The device is available in a 16-pin SOIC package, which is ideal for a single-layer PCB board.

The TPS61197 provides highly integrated solutions for LCD TV backlighting. This device is a current-mode boost controller driving one WLED string with multiple LEDs in series. The TPS61197 adjusts the output voltage of the boost controller automatically to provide only the minimum voltage required by the LED string to generate the setting LED current, thereby optimizing the efficiency of the driver.

The device supports direct PWM brightness dimming method. During the pulse-width modulation (PWM) dimming, the white LED current is turned on and off at the duty cycle and frequency, which are determined by an external PWM signal. The PWM dimming frequency ranges from 90 Hz to 22 kHz.

The TPS61197 integrates overcurrent protection, output short-circuit protection, Schottky diode open and short protection, LED open protection, LED-string short protection, and overtemperature shutdown circuit. The device also provides programmable input undervoltage lockout (UVLO) threshold and output overvoltage protection (OVP) threshold. The device is available in a 16-pin SOIC package, which is ideal for a single-layer PCB board.
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Documentación técnica

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* Data sheet TPS61197 Single-String White-LED Driver for LCD TV datasheet (Rev. B) PDF | HTML 16 jun 2017
White paper Common LED Functions and LED Driver Design Considerations 21 sep 2020
Application note Some Guidelines and Tips for the LED Driver Application 14 ago 2019
EVM User's guide TPS61197EVM User’s Guide 09 jul 2014

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

TPS61197EVM — Módulo de evaluación TPS61197EVM

The TPS61197 provides highly integrated solutions for LCD TV backlight. This device is a current mode boost controller driving one WLED string with multiple LEDs in series. The input voltage range for TPS61197 is from 8V to 30V.The TPS61197 adjusts the boost controller's output voltage (...)

Guía del usuario: PDF
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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 (...)
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Diseños de referencia

PMP10171 — Diseño de referencia de controlador de focos LED de 4 canales

The PMP10171 reference design is a boost LED driver with four outputs. It has an input voltage range of 10 .. 30V and provides 500mA at 40V maximum. A microcontroller provides an adjustable PWM signal for adjusting the brightness of the LEDs.
Test report: PDF
Esquema: PDF
Paquete Pasadores Descargar
SOIC (D) 16 Ver opciones
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Pedidos y calidad

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  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
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