65-V automotive 2-A shunt-PWM dimmable LED driver with Integrated NFET and current calibration



Product details


Topology Buck Vin (Min) (V) 5.5 Vin (Max) (V) 65 Vout (Min) (V) 0 Vout (Max) (V) 62 Iout (Max) (A) 2 Iq (Typ) (mA) 1 Switching frequency (Max) (kHz) 2000 Operating temperature range (C) -40 to 125 Features Integrated Switch, Precision Dimming Control, Thermal Shutdown open-in-new Find other Automotive LED drivers

Package | Pins | Size

HVSSOP (DGQ) 10 15 mm² 3 x 4.9 open-in-new Find other Automotive LED drivers


  • 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

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The TPS92515 family of 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 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.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 7
Type Title Date
* Datasheet TPS92515x 2-A, Buck LED Driver with Integrated N-channel FET, High-Side Current Sense, and Shunt FET PWM Dimming Capability datasheet (Rev. A) Aug. 16, 2016
White paper LED Drivers for Automotive Exterior Applications (Rev. B) Mar. 27, 2018
Selection guide 汽车外部照明应用的LED驱动器 Mar. 15, 2018
Technical articles Shining a light on op amps: considerations in LED lighting Oct. 20, 2016
Technical articles Lighting the road ahead: LEDs in automotive front lighting Sep. 29, 2016
Technical articles Here's how body electronics and lighting technology are changing the driving experience Sep. 26, 2016
Technical articles LED brightness adjustment: high-frequency PWM dimming Aug. 26, 2016

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

The TPS92515HVEVM-749 is a fully assembled and tested LED driver. It can be used to power a single string of series connected LEDs. Various dimming configurations can be tested using this EVM: Analog Dimming, PWM Dimming, Shunt FET dimming.
  • Versatile LED driver capable of driving a string of LEDs up to 60 Volts.
  • Wide input voltage range (5.25 V to 65 V)
  • Analog, PWM, shunt FET dimming capable
  • Internal Low resistance N-MOSFET
  • Simple Quasi-Hysteretic Control Requires no Loop Compensation

Design tools & simulation

SLUM524.ZIP (44 KB) - PSpice Model
SLUM553.ZIP (48 KB) - TINA-TI Spice Model
SLUM554.TSC (54 KB) - TINA-TI Reference Design
PSpice® for TI design and simulation tool
PSPICE-FOR-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 (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SLUC613A.ZIP (1862 KB)

Reference designs

50W Dual-stage LED Driver Reference Design with Adaptive Pre-boost Control for Automotive Headlights
TIDA-01520 — The TIDA-01520 dual-stage reference design drives two strings of LEDs for automotive headlight applications while automatically adapting the pre-boost voltage without the need of a microcontroller (MCU) which saves space and cost. Additionally, the design’s adaptive, pre-boost control reduces (...)
document-generic Schematic
7.5-W, 1.25-A, Automotive Buck LED Driver Reference Design With Analog and PWM Dimming
PMP15004 — This TI design showcases a TPS92515HV-Q1 small form factor LED driver optimized to drive two LEDs for a fog light design. The buck topology is implemented as a direct-to-battery, single-stage LED driver which results in a simple and cost-effective lighting solution. Additional design flexibility (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
HVSSOP (DGQ) 10 View options

Ordering & quality

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  • Lead finish/Ball material
  • MSL rating/Peak reflow
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  • Qualification summary
  • Ongoing reliability monitoring

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