Product details

Number of channels (#) 1 Topology Buck Rating Automotive Operating temperature range (C) -40 to 125 Vin (Min) (V) 5.5 Vin (Max) (V) 42 Vout (Min) (V) 0 Vout (Max) (V) 39 Iout (Max) (A) 2 Iq (Typ) (mA) 1 Switching frequency (Max) (kHz) 2000 Features Integrated Switch, Precision Dimming Control, Thermal Shutdown
Number of channels (#) 1 Topology Buck Rating Automotive Operating temperature range (C) -40 to 125 Vin (Min) (V) 5.5 Vin (Max) (V) 42 Vout (Min) (V) 0 Vout (Max) (V) 39 Iout (Max) (A) 2 Iq (Typ) (mA) 1 Switching frequency (Max) (kHz) 2000 Features Integrated Switch, Precision Dimming Control, Thermal Shutdown
HVSSOP (DGQ) 10 9 mm² 3 x 3
  • 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
  • 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

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.

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

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Type Title Date
* Data sheet TPS92515x 2-A, Buck LED Driver with Integrated N-channel FET, High-Side Current Sense, and Shunt FET PWM Dimming Capability datasheet (Rev. A) 16 Aug 2016
Application note Automotive Front Headlight Selection Guide 16 Apr 2021
Technical article Here's how body electronics and lighting technology are changing the driving experience 26 Sep 2016
Technical article LED brightness adjustment: high-frequency PWM dimming 26 Aug 2016
Technical article Take better selfies with innovative LED flashes 18 Nov 2014
Technical article Solving the automotive EMI issues in new cars with all the screens 11 Sep 2014

Design & development

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

Evaluation board

TPS92515HVEVM-749 — TPS92515HV-Q1 Buck LED Driver Evaluation Board

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.
Not available on TI.com
Simulation model

TPS92515 PSpice Transient Model

SLUM524.ZIP (44 KB) - PSpice Model
Simulation model

TPS92515 TINA-TI Transient Spice Model

SLUM553.ZIP (48 KB) - TINA-TI Spice Model
Simulation model

TPS92515 TINA-TI Reference Design

SLUM554.TSC (54 KB) - TINA-TI Reference Design
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Calculation tool

TPS92515 Design Calculator (Rev. A)

SLUC613A.ZIP (1862 KB)
Reference designs

PMP20487 — Integrated Switch LED Buck Regulator for Automotive Lighting Reference Design

PMP20487 is a hysteretic buck converter reference design which drives LEDs at up to 1A from an input voltage of 9V to 16V. This design uses the TPS92515-Q1 buck LED driver set for a constant off-time of 1μs. Features include integrated N-channel FET, high-side current sense, and shunt FET PWM (...)
Reference designs

PMP15004 — 7.5-W, 1.25-A, Automotive Buck LED Driver Reference Design With Analog and PWM Dimming

This reference design showcases a small form factor LED driver (TPS92515HV-Q1) 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 is simple and cost-effective lighting. Additional design flexibility includes (...)
Package Pins Download
HVSSOP (DGQ) 10 View options

Ordering & quality

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  • Ongoing reliability monitoring

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