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Controladores para LED de retroiluminación

TPS61158

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Controlador WLED de 30 V con diodo de potencia integrado

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TPS61158

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Detalles del producto

Number of channels 1 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Vout (min) (V) 2.7 Vout (max) (V) 29 Type Inductive Switching frequency (max) (kHz) 960 Duty cycle (max) (%) 94 LED current per channel (mA) 30 Peak efficiency (%) 94 Topology Boost Features Enable/Shutdown, OVP, PWM control, Soft Start, Thermal shutdown Operating temperature range (°C) -40 to 85 Rating Catalog
Number of channels 1 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Vout (min) (V) 2.7 Vout (max) (V) 29 Type Inductive Switching frequency (max) (kHz) 960 Duty cycle (max) (%) 94 LED current per channel (mA) 30 Peak efficiency (%) 94 Topology Boost Features Enable/Shutdown, OVP, PWM control, Soft Start, Thermal shutdown Operating temperature range (°C) -40 to 85 Rating Catalog
WSON (DRV) 6 4 mm² (2 mm × 2 mm)
  • 2.7-V to 5.5-V Input Voltage Range
  • 28-V Open LED Protection (up to 8 LEDs)
  • Integrated 0.6-A, 30-V Internal Switch FET and
    Power Diode
  • 750-kHz Switching Frequency
  • Flexible Digital and PWM Brightness Control
    • 1-Wire Control Interface (EasyScale™)
    • PWM Dimming Control Interface
  • Up to 100:1 PWM Dimming Ratio
  • Integrated Loop Compensation
  • Built-in Soft Start
  • Built-in WLED Open protection
  • Thermal Shutdown
  • 2.7-V to 5.5-V Input Voltage Range
  • 28-V Open LED Protection (up to 8 LEDs)
  • Integrated 0.6-A, 30-V Internal Switch FET and
    Power Diode
  • 750-kHz Switching Frequency
  • Flexible Digital and PWM Brightness Control
    • 1-Wire Control Interface (EasyScale™)
    • PWM Dimming Control Interface
  • Up to 100:1 PWM Dimming Ratio
  • Integrated Loop Compensation
  • Built-in Soft Start
  • Built-in WLED Open protection
  • Thermal Shutdown

With a 30V-rated integrated switch FET and power diode, the TPS61158 is a boost converter that drives LEDs in series. The boost converter runs at 750-kHz fixed switching frequency to reduce output ripple, improve conversion efficiency, and allows for the use of small external components.

The default white LED current is set with the external sensor resistor RFB, and the feedback voltage is regulated to 200 mV, as shown in Typical Application. During the operation, the LED current can be controlled using the 1-wire digital interface (EasyScale™ protocol) through the CTRL pin. Alternatively, a pulse width modulation (PWM) signal can be applied to the CTRL pin through which the duty cycle determines the feedback reference voltage. In either digital or PWM mode, the TPS61158 does not burst the LED current; therefore, it does not generate audible noises on the output capacitor. For maximum protection, the device features integrated open LED protection that disables the TPS61158 to prevent the output voltage from exceeding the device absolute maximum voltage ratings during open LED conditions.

With a 30V-rated integrated switch FET and power diode, the TPS61158 is a boost converter that drives LEDs in series. The boost converter runs at 750-kHz fixed switching frequency to reduce output ripple, improve conversion efficiency, and allows for the use of small external components.

The default white LED current is set with the external sensor resistor RFB, and the feedback voltage is regulated to 200 mV, as shown in Typical Application. During the operation, the LED current can be controlled using the 1-wire digital interface (EasyScale™ protocol) through the CTRL pin. Alternatively, a pulse width modulation (PWM) signal can be applied to the CTRL pin through which the duty cycle determines the feedback reference voltage. In either digital or PWM mode, the TPS61158 does not burst the LED current; therefore, it does not generate audible noises on the output capacitor. For maximum protection, the device features integrated open LED protection that disables the TPS61158 to prevent the output voltage from exceeding the device absolute maximum voltage ratings during open LED conditions.
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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos TPS61158 30-V WLED Driver with Integrated Power Diode datasheet (Rev. A) PDF | HTML 18/06/2015
Informe Common LED Functions and LED Driver Design Considerations 21/09/2020
Nota sobre la aplicación Simple Backlight Driver Dimming Performance 20/03/2017
Nota sobre la aplicación Analog PWM Dimming in White-LED Drivers 21/12/2016

Diseño y desarrollo

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GUI para el módulo de evaluación (EVM)

SLVC520 — Dimming program for TPS61158EVM-565

Productos y hardware compatibles
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
WSON (DRV) 6 Ultra Librarian
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