TPS92515/15HV/15-Q1/15HV-Q1 Buck LED Drivers

Texas Instruments offers its TPS92515, 2 A LED drivers with integrated NFET, high-side current sense, and shunt PWM dimming capability

Image of Texas Instruments' TPS92515 Buck LED DriversTexas Instruments' TPS92515 devices are compact, monolithic switching regulators integrating a low-resistance N-channel MOSFET. The devices are intended for high-brightness LED lighting applications where efficiency, high bandwidth, PWM, and/or analog dimming and small size are important.

The regulator operates using a constant off-time, peak current control. The operation is simple: after an off-time based on the output voltage, an on-time begins. The on-time ends once the inductor peak current threshold is reached. The TPS92515 device can be configured to maintain a constant peak-to-peak ripple during the ON and OFF periods of a shunt FET dimming cycle. This is ideal for maintaining a linear response across the entire shunt FET dimming range.

Steady-state accuracy is aided by the inclusion of a low-offset, high-side comparator. LED current can be modulated using either analog or PWM dimming, or both simultaneously. Other features include UVLO, wide input voltage operation, inherent LED open operation, and a wide operating temperature range with thermal shut-down.

The TPS92515 and TPS92515-Q1 devices have an operational input range up to 42 V. The TPS92515HV and TPS92515HV-Q1 offer high-voltage options with an input range up to 65 V. All are available in a thermally enhanced, 10-pin HVSSOP package.

Features
  • AEC-Q100 grade 1 qualified
  • Integrated 290 mΩ (typ.) internal N-channel FET
  • Input voltage range:
    • TPS92515x: 5.5 V to 42 V
    • TPS92515HVx: 5.5 V to 65 V
    • Operation down to 5.15 V after start-up
  • Low offset high-side peak current comparator
  • Constant average current up to 2 A
  • Inherent, cycle-by-cycle current limit
  • Multiple dimming methods
    • 10,000:1 shunt PWM dimming range
    • 1000:1 PWM dimming range
    • 200:1 analog dimming range
  • Simple constant off-time control
    • No loop compensation
    • Fast transient response
  • Thermally enhanced HVSSOP package
  • Integrated thermal protection

TPS92515/15HV/15-Q1/15HV-Q1 Buck LED Drivers

ImageManufacturer Part NumberDescriptionVoltage - Supply (Max)Available QuantityView Details
TPS92515DGQT datasheet linkIC LED DRVR REG PWM 10HVSSOPTPS92515DGQTIC LED DRVR REG PWM 10HVSSOP42V585 - Immediate
TPS92515DGQT product page link
TPS92515HVQDGQTQ1 datasheet linkIC LED DRVR REG PWM 10HVSSOPTPS92515HVQDGQTQ1IC LED DRVR REG PWM 10HVSSOP65V2593 - Immediate
TPS92515HVQDGQTQ1 product page link
TPS92515QDGQTQ1 datasheet linkIC LED DRVR REG PWM 10HVSSOPTPS92515QDGQTQ1IC LED DRVR REG PWM 10HVSSOP42V1355 - Immediate
TPS92515QDGQTQ1 product page link
TPS92515HVDGQT datasheet linkIC LED DRVR REG PWM 10HVSSOPTPS92515HVDGQTIC LED DRVR REG PWM 10HVSSOP65V2479 - Immediate
TPS92515HVDGQT product page link

Evaluation Board

ImageManufacturer Part NumberDescriptionCurrent - Output / ChannelOutputs and TypeVoltage - OutputAvailable QuantityView Details
TPS92515HVEVM-749 datasheet linkEVAL BOARD FOR TPS92515TPS92515HVEVM-749EVAL BOARD FOR TPS925151A1, Non-Isolated3 V ~ 65 V26 - Immediate
TPS92515HVEVM-749 product page link
Published: 2016-10-06