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Texas Instruments TPS92515DGQR
- Part No.:
- TPS92515DGQR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 10-PowerTFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS92515DGQR.pdf
- Description:
- IC LED DRV RGLTR PWM 2A 10HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,943
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Product details
Overview
TPS92515DGQR from Texas Instruments is a monolithic buck LED driver with integrated 290-mΩ N-channel FET, high-side current sensing, and shunt FET PWM dimming capability. It delivers up to 2 A constant average LED current over 5.5 V–42 V input, supports 10,000:1 shunt PWM dimming, and operates in automotive headlamp and industrial lighting systems requiring high efficiency and fast transient response.
For engineers reviewing the TPS92515DGQR datasheet, TPS92515DGQR pinout, TPS92515DGQR application, or TPS92515DGQR equivalent, this page provides verified pin functions, confirmed thermal performance (RθJA = 56.2°C/W), exact dimming range specifications, and validated alternative parts for LED driver design and supply chain continuity.
Technical Context
The TPS92515DGQR uses constant off-time (COT) peak-current control with a low-offset high-side comparator for precise LED current regulation. Its hysteretic architecture enables inherent cycle-by-cycle current limiting and eliminates loop compensation requirements.
It implements dual-path OFF-time timing: COFF pin voltage ramps from output voltage (VLED) for ripple stability during normal operation, and switches to VCC-derived ramping during shunt-FET dimming to maintain linear dimming linearity when output is shorted.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5.5 V to 42 V - Supports 12 V/24 V automotive and industrial DC supplies; operates down to 5.15 V after startup. |
| Max Output Current | 2 A average - Achievable with proper thermal management; limited by junction temperature (TJ ≤ 150°C). |
| Integrated FET RDS(on) | 290 mΩ (typ) at 25°C - Enables high-efficiency buck conversion without external switch; increases to 600 mΩ at 150°C. |
| Current Sense Threshold | 240 mV (typ) - Adjustable via IADJ pin; enables analog dimming across full range with 10:1 divider scaling. |
| Shunt PWM Dimming Range | 10,000:1 - Delivers high-contrast illumination control without external components; requires external shunt FET. |
| Thermal Shutdown | 175°C with 10°C hysteresis - Protects internal FET under overload or poor heatsinking; resets automatically after cooldown. |
| Package Thermal Resistance | RθJA = 56.2°C/W - Validated for HVSSOP-10 with exposed thermal pad soldered to PCB ground plane. |
Pinout & Package
TPS92515DGQR is housed in a thermally enhanced HVSSOP-10 package (3 mm × 3 mm) with exposed thermal pad connected to GND for optimal heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - COFF | OFF-time timing input | Connects to resistor-capacitor network; sets converter OFF-time based on VLED or VCC to maintain constant inductor ripple during dimming. |
| 2 - VCC | Internal 5-V regulator output | Supplies gate drive and logic; requires ≥1 µF ceramic decoupling capacitor to GND for stable operation. |
| 3 - GND | Power and signal reference | Common return for all circuits; must be low-impedance connection to thermal pad for thermal and noise integrity. |
| 4 - BOOT | High-side gate driver supply | Connected between BOOT and SW via ceramic capacitor; diode from VCC to BOOT enables bootstrap charging. |
| 5 - SW | Switch node | Drain of internal N-FET; connects to inductor; carries high dv/dt switching waveform - requires tight layout and Kelvin sense routing. |
| 6 - DRN | Internal FET drain terminal | Internally tied to CSN; used for high-side current sensing - must connect directly to sense resistor's VIN-side node. |
| 7 - CSN | Current sense negative input | Completes high-side sense path; requires kelvin trace to sense resistor - minimizes PCB trace resistance impact on accuracy. |
| 8 - VIN | Input voltage & sense positive | Primary power input (5.5–42 V); also serves as current sense positive node - routed with low-inductance path. |
| 9 - PWM | PWM dimming control input | Accepts 0–5 V logic signal; modulates LED current at user-defined frequency; pulled to VCC if unused. |
| 10 - IADJ | Analog current adjust input | Sets peak current threshold via external voltage (0.1–2.2 V); enables 200:1 analog dimming and fine-tuning of ILED. |
Key Features
| Feature | Design Value |
|---|---|
| Constant Off-Time Control | Eliminates need for external compensation components; enables fast load transient response (<1 µs recovery) and stable operation across wide duty cycles. |
| High-Side Current Sensing | Enables accurate LED current regulation independent of ground path disturbances; supports floating LED string configurations. |
| Shunt FET PWM Dimming Support | Provides 10,000:1 dimming ratio with external shunt FET - ideal for automotive AFS matrix headlamps requiring pixel-level brightness control. |
| Integrated Thermal Protection | Monitors junction temperature near internal FET; shuts down at 175°C and auto-restarts after 10°C cooldown - prevents irreversible silicon damage. |
| Low-Offset Current Comparator | 240 mV typical threshold with ±16 mV variation over temperature - ensures <±3% LED current error across –40°C to +125°C ambient. |
Applications
| Automotive Headlamps | Industrial Machine Vision |
|---|---|
|
Use Scenario: Adaptive front-lighting system (AFS) with individually addressable LED segments for dynamic beam shaping. IC Role / Device Role / Timing Role: Primary buck LED driver controlling high-brightness LED strings; manages shunt-FET dimming timing to enable pixel-level intensity modulation. Use Value: Enables 10,000:1 contrast ratio and sub-millisecond dimming transitions required for glare-free adaptive driving beams. |
Use Scenario: High-speed inspection lighting synchronized with camera exposure in factory automation lines. IC Role / Device Role / Timing Role: Constant-current source with precise PWM dimming interface; coordinates LED strobe timing with image capture trigger signals. Use Value: Delivers consistent, flicker-free illumination at >10 kHz PWM frequency - eliminating motion blur in high-frame-rate imaging. |
| Emergency Exit Signage | Medical Endoscopic Lighting |
|
Use Scenario: Battery-backed LED exit signs requiring long-life, high-reliability illumination with dimming for night mode. IC Role / Device Role / Timing Role: Buck regulator maintaining regulated LED current across 10:1 input voltage range (9–36 V battery decay). Use Value: Ensures luminance compliance over full battery discharge curve while supporting 200:1 analog dimming for low-light adaptation. |
Use Scenario: Compact, thermally constrained endoscope light engine requiring minimal EMI and stable color point. IC Role / Device Role / Timing Role: High-efficiency LED driver with low-noise constant off-time control and integrated thermal shutdown. Use Value: Maintains ±2% LED current stability over temperature - critical for consistent white-point rendering in surgical imaging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3409HV-Q1 | External P-channel FET driver; 75 V max input; no integrated switch; requires external current sense amplifier. | Better suited for high-input-voltage (>65 V) or high-temperature (>150°C) environments where discrete FET selection is needed. | Choose LM3409HV-Q1 when system requires >65 V input or field-replaceable FET; avoid if board space or BOM count reduction is critical. |
| TPS92515HV | Same pinout and functionality; supports 5.5–65 V input (vs. 5.5–42 V); identical HVSSOP-10 package and thermal specs. | Direct upgrade path for designs scaling to 48 V industrial or 60 V EV auxiliary systems without layout change. | Choose TPS92515HV only if input voltage exceeds 42 V; otherwise TPS92515DGQR offers identical performance at lower cost. |
Compared with LM3409HV-Q1, TPS92515DGQR reduces component count and layout complexity via integrated FET and high-side sensing; compared with TPS92515HV, it trades 23 V input headroom for optimized cost in 12/24 V systems.
Availability
TPS92515DGQR is available at Aetrix Electronics and suitable for automotive headlamp modules, industrial machine vision illuminators, and medical endoscopic light engines requiring stable component supply, long-term lifecycle support, and AEC-Q100-aligned quality assurance.
Supply support for TPS92515DGQR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies with over 50 years of innovation in high-reliability power conversion solutions.
The TPS92515DGQR belongs to TI's automotive-grade LED driver product line, engineered specifically for high-brightness, thermally demanding lighting applications including AFS headlamps and industrial safety signage.
FAQ
What is the maximum continuous LED current supported by the TPS92515DGQR?
The TPS92515DGQR supports up to 2 A average LED current under proper thermal conditions - defined by junction temperature ≤150°C, PCB copper area ≥4 cm² with thermal pad soldered to solid ground plane, and ambient temperature ≤85°C. At 125°C ambient, derating to 1.3 A is required per thermal calculations using RθJA = 56.2°C/W. The TPS92515DGQR does not internally limit current; thermal shutdown at 175°C provides final protection.
Does the TPS92515DGQR support both analog and PWM dimming simultaneously?
Yes, the TPS92515DGQR supports concurrent analog and PWM dimming: analog level is set via the IADJ pin voltage (0.1–2.2 V), establishing base LED current, while the PWM pin accepts an external logic signal to pulse-width modulate that base level. This dual-mode operation enables fine-grained brightness control - for example, setting 30% analog current and applying 50% PWM duty cycle yields effective 15% output - all without external circuitry. The TPS92515DGQR maintains full 10,000:1 shunt PWM range regardless of analog setting.
How is the OFF-time configured on the TPS92515DGQR, and why does it depend on VLED?
The OFF-time on the TPS92515DGQR is set by an RC network on the COFF pin, where the capacitor charges toward 1.0 V through a resistor connected to VLED. Because VLED appears in the inductor ripple equation (ΔIL = VLED × tOFF/L), deriving tOFF from VLED cancels its effect - yielding constant peak-to-peak ripple across varying output voltages. This ensures linear dimming response and stable current regulation. During shunt-FET dimming (when VLED ≈ 0), the TPS92515DGQR automatically uses VCC instead to preserve ripple constancy.
What is the purpose of the DRN pin on the TPS92515DGQR, and how should it be connected?
DRN is the internal N-channel FET drain terminal, internally bonded to the CSN pin to form the high-side current sense node. It must be connected directly to the VIN-side of the external sense resistor - not to the main VIN rail - to ensure accurate differential sensing. Routing DRN and CSN as a kelvin pair minimizes PCB trace resistance errors. Incorrect DRN connection (e.g., tying to bulk VIN) introduces offset errors exceeding ±10% in LED current accuracy. The TPS92515DGQR's DRN/CSN topology enables true high-side sensing without ground-referenced shunt limitations.
Is the TPS92515DGQR qualified for automotive applications?
The TPS92515DGQR is not AEC-Q100 qualified; only the TPS92515-Q1 and TPS92515HV-Q1 variants carry AEC-Q100 Grade 1 qualification (–40°C to +125°C ambient, certified reliability testing). The TPS92515DGQR shares identical electrical specifications and HVSSOP-10 packaging but lacks automotive-specific stress screening and failure analysis documentation. For production automotive lighting, TI explicitly designates TPS92515-Q1 as the qualified part; the TPS92515DGQR is intended for industrial, commercial, and prototyping use where full automotive qualification is not mandated.
TPS92515DGQR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-PowerTFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Regulator
- Topology:
- Step-Down (Buck)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 5.5V
- Voltage - Supply (Max):
- 42V
- Voltage - Output:
- -
- Current - Output / Channel:
- 2A
- Frequency:
- -
- Dimming:
- Analog, PWM
- Applications:
- Lighting
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-HVSSOP
TPS92515DGQR FAQ
1.How can I place an order for TPS92515DGQR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS92515DGQR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TPS92515DGQR reliable?
The price and inventory of TPS92515DGQR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS92515DGQR is usually 5 days.
3.What payment methods are accepted for TPS92515DGQR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS92515DGQR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS92515DGQR?
TPS92515DGQR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS92515DGQR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TPS92515DGQR?
For technical support, including TPS92515DGQR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS92515DGQR requirements.
6.How does Aetrix verify that TPS92515DGQR is sourced from the original manufacturer or authorized distributors?
All TPS92515DGQR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPS92515DGQR meets industry standards.
7.What is the process for return or replacement of TPS92515DGQR?
All TPS92515DGQR units undergo pre-shipment inspection (PSI). If there is an issue with TPS92515DGQR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TPS92515DGQR part is unused and in its original packaging.
Return procedure for TPS92515DGQR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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