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TPS61199

AKTIV

Treiber für weiße LEDs für die Hintergrundbeleuchtung von LCD-Monitoren

Produktdetails

Number of channels 8 Vin (min) (V) 8 Vin (max) (V) 30 Vout (min) (V) 8 Vout (max) (V) 60 Type Inductive Switching frequency (max) (kHz) 800 Duty cycle (max) (%) 94 LED current per channel (mA) 70 Peak efficiency (%) 95 Topology Boost Features Adjustable Switch Frequency, Enable/Shutdown, OVP, PWM control, Thermal shutdown Operating temperature range (°C) -40 to 85 Rating Catalog
Number of channels 8 Vin (min) (V) 8 Vin (max) (V) 30 Vout (min) (V) 8 Vout (max) (V) 60 Type Inductive Switching frequency (max) (kHz) 800 Duty cycle (max) (%) 94 LED current per channel (mA) 70 Peak efficiency (%) 95 Topology Boost Features Adjustable Switch Frequency, Enable/Shutdown, OVP, PWM control, Thermal shutdown Operating temperature range (°C) -40 to 85 Rating Catalog
HTSSOP (PWP) 20 41.6 mm² 6.5 x 6.4 SOP (NS) 20 98.28 mm² 12.6 x 7.8
  • 8-V to 30-V Input Voltage
  • Integrated High-Power Boost Controller
  • Adaptive Boost Output for LED Voltages
  • Drive up to Eight LED Strings in Parallel
  • Maximum 70 mA for Each LED String
  • 3% Current Matching Between Strings
  • 5000:1 PWM Dimming Ratio at 200 Hz
  • MOSFET Overcurrent Protection
  • Programmable LED Short Protection
  • Adjustable LED Open Protection
  • Thermal Shutdown Protection
  • 20-Pin SO Package and TSSOP Package
    With PowerPAD™
  • 8-V to 30-V Input Voltage
  • Integrated High-Power Boost Controller
  • Adaptive Boost Output for LED Voltages
  • Drive up to Eight LED Strings in Parallel
  • Maximum 70 mA for Each LED String
  • 3% Current Matching Between Strings
  • 5000:1 PWM Dimming Ratio at 200 Hz
  • MOSFET Overcurrent Protection
  • Programmable LED Short Protection
  • Adjustable LED Open Protection
  • Thermal Shutdown Protection
  • 20-Pin SO Package and TSSOP Package
    With PowerPAD™

The TPS61199 provides highly integrated solutions for large size LCD backlighting. This device integrates a current-mode boost controller and eight current sinks for driving up to eight LED strings with multiple LEDs in series. Each string has an independent current regulator with current matching between strings reaching 3% regulation accuracy. The device automatically adjusts the output voltage of the boost converter to provide only the voltage required by the LED string with the largest forward voltage drop plus the minimum required voltage at the IFBx pin of that string, thereby optimizing efficiency of the driver.

The TPS61199 provides PWM brightness dimming with an external PWM signal. The signal of the PWM maximum frequency can be as high as 22 kHz. Dimming ratios up to 5000:1 can be achieved with a 200-Hz PWM signal. The TPS61199 integrates overcurrent protection for the switch FET, soft start-up, LED short protection, LED open protection, and overtemperature shutdown protection. The TPS61199 device is available in 20-pin SO and HTSSOP packages.

For all available packages, see the orderable addendum at the end of the data sheet.

The TPS61199 provides highly integrated solutions for large size LCD backlighting. This device integrates a current-mode boost controller and eight current sinks for driving up to eight LED strings with multiple LEDs in series. Each string has an independent current regulator with current matching between strings reaching 3% regulation accuracy. The device automatically adjusts the output voltage of the boost converter to provide only the voltage required by the LED string with the largest forward voltage drop plus the minimum required voltage at the IFBx pin of that string, thereby optimizing efficiency of the driver.

The TPS61199 provides PWM brightness dimming with an external PWM signal. The signal of the PWM maximum frequency can be as high as 22 kHz. Dimming ratios up to 5000:1 can be achieved with a 200-Hz PWM signal. The TPS61199 integrates overcurrent protection for the switch FET, soft start-up, LED short protection, LED open protection, and overtemperature shutdown protection. The TPS61199 device is available in 20-pin SO and HTSSOP packages.

For all available packages, see the orderable addendum at the end of the data sheet.

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Technische Dokumentation

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Typ Titel Datum
* Data sheet TPS61199 White-LED Driver for LCD Monitor Backlighting datasheet (Rev. B) PDF | HTML 23 Nov 2016
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 Aug 2019
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 11 Dez 2018
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Application note High-Brightness Portable Lighting 04 Okt 2016
User guide TPS61199EVM-598 EVM for TPS61199 WLED Driver for LCD Monitor Backlighting 04 Jan 2011
Application note Description Compensating the Current Mode Boost Control Loop 09 Dez 2010

Design und Entwicklung

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Evaluierungsplatine

TPS61199EVM-598 — Evaluierungsmodul für TPS61199 weiße LED-Treiber für die Hintergrundbeleuchtung von LCD-Monitoren

This TPS61199EVM-598 contains the Texas Instruments TPS61199, a WLED power solution providing up to eight independently regulated current outputs using a single inductor step-up (boost) converter. The current outputs are ideal for driving a WLED backlight in notebook/laptop computers. This user's (...)

Benutzerhandbuch: PDF
Berechnungstool

SLVC386 TPS61199DesignHelp Excel Spreadsheet

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