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Texas Instruments TPS92515AHVQDGQTQ1
- Part No.:
- TPS92515AHVQDGQTQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 10-PowerTFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS92515AHVQDGQTQ1.pdf
- Description:
- IC LED DRV RGLTR PWM 2A 10HVSSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TPS92515AHVQDGQTQ1 from Texas Instruments is an AEC-Q100 Grade 1 qualified automotive buck LED driver with integrated 290-mΩ N-channel FET, high-side current sense, and shunt FET PWM dimming capability. It delivers constant average LED current up to 2 A across 5.5 V to 65 V input, supports 10,000:1 shunt PWM dimming, and operates in automotive headlamp and DRL systems requiring high reliability and thermal robustness.
For engineers reviewing the TPS92515AHVQDGQTQ1 datasheet, TPS92515AHVQDGQTQ1 pinout, TPS92515AHVQDGQTQ1 application, or TPS92515AHVQDGQTQ1 equivalent, this device is selected for high-brightness LED lighting where precise current regulation, fast transient response, and multi-method dimming (shunt PWM/analog/PWM) are required under harsh ambient conditions.
Technical Context
The TPS92515AHVQDGQTQ1 uses constant OFF-time (COFT), peak-current control architecture with inherent cycle-by-cycle current limiting-no external loop compensation needed. Its high-side differential current sense comparator features 240 mV typical threshold with ±18 mV variation, enabling stable 2 A average output current regulation even at low VIN–VCSN differentials.
It integrates a thermally enhanced HVSSOP-10 package with exposed thermal pad, supports VIN down to 5.15 V after startup, and implements dual UVLO (VIN and VCC), BOOT UVLO hysteresis, and thermal shutdown at 175 °C with 10 °C hysteresis-critical for automotive lighting safety compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5.5 V to 65 V - supports direct battery connection in 12 V/24 V/48 V automotive systems, with operation sustained down to 5.15 V after startup. |
| Max Output Current | 2 A average - enables high-lumen LED strings without external current amplification or parallel drivers. |
| Integrated FET RDS(on) | 290 mΩ (typ) at 25 °C - reduces conduction loss and thermal stress; increases to 650 mΩ at 150 °C, defining worst-case efficiency margin. |
| Shunt PWM Dimming Ratio | 10,000:1 - achieves ultra-fine brightness control in adaptive front lighting (AFS) matrix applications without visible flicker or nonlinearity. |
| Current Sense Threshold | 240 mV (typ), adjustable via IADJ pin - allows precise analog dimming over 200:1 range while minimizing sense resistor power loss. |
| Thermal Shutdown | 175 °C with 10 °C hysteresis - protects against thermal runaway during sustained high-current operation in enclosed headlamp housings. |
| Package | HVSSOP-10 (3 mm × 3 mm) with exposed thermal pad - provides 5.3 °C/W junction-to-case (bottom) thermal resistance for direct PCB copper thermal sinking. |
Pinout & Package
TPS92515AHVQDGQTQ1 is housed in a thermally enhanced HVSSOP-10 package (3 mm × 3 mm) with exposed thermal pad connected to GND for optimal heat dissipation in high-power LED driver layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| COFF | OFF-time timing input | Connects to RC network that sets converter OFF-time; determines switching frequency and inductor ripple linearity during shunt dimming. |
| CSN | High-side current sense negative | Completes Kelvin connection to sense resistor; enables accurate high-side sensing without ground path interference. |
| DRN | Internal FET drain | Internally tied to CSN node; must be routed with low-inductance path to minimize switching noise coupling into current sense path. |
| GND | Power and signal reference | Common return for all internal circuits; thermal pad must be soldered to large GND copper area for thermal management. |
| IADJ | Analog current adjust input | Sets peak current threshold via 10:1 internal divider; 2.2 V input yields 220 mV sense threshold for optimal accuracy and low-loss operation. |
| PWM | Digital dimming enable | Accepts logic-level PWM signal (0.95–1.05 V threshold); modulates output current from max analog level without external components. |
| SW | Internal FET source | Switching node connecting to output inductor; requires tight layout with minimal trace length to reduce EMI and voltage ringing. |
| VCC | 5 V internal regulator output | Supplies internal circuitry and can source ≤500 µA for external bias; requires ≥1 µF ceramic decoupling capacitor. |
| VIN | Input voltage and current sense positive | Primary power input and high-side sense reference; supports wide 5.5–65 V range and includes 4.9 V UVLO with 200 mV hysteresis. |
| BOOT | High-side gate drive supply | Connected via diode and capacitor to SW; powers internal high-side driver; UVLO at 2.0–3.5 V prevents shoot-through during low-VIN conditions. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Rated for –40 °C to +125 °C ambient operation - meets automotive electronics reliability requirements for engine bay and headlamp placement. |
| Constant OFF-time control | Eliminates need for external compensation network - simplifies design, improves transient response, and maintains stability across CCM/DCM boundary. |
| 10,000:1 shunt FET PWM dimming | Enables linear brightness control in switched-matrix AFS headlamps - avoids color shift and ensures consistent photometric performance at all dimming levels. |
| Low-offset high-side current sense | 240 mV typical threshold with <130 ns CSN falling delay - achieves ±3% LED current accuracy over temperature and line without calibration. |
| Integrated thermal protection | 175 °C shutdown with 10 °C hysteresis - prevents permanent damage during thermal overload while allowing safe recovery after cooling. |
| Thermally enhanced HVSSOP package | 5.3 °C/W junction-to-case (bottom) resistance - enables >1.5 W power dissipation on standard 2 oz copper PCB without heatsink. |
Applications
| Automotive Headlamp Matrix Control | Industrial Machine Vision Illumination |
|---|---|
Use Scenario: Adaptive front-lighting system (AFS) with individually addressable LED segments for glare-free high-beam and dynamic cornering light. IC Role / Device Role / Timing Role: Primary buck LED driver controlling current to each LED string in real time, synchronized with vehicle CAN bus commands and camera-based scene analysis. Use Value: Enables pixel-level beam shaping with 10,000:1 dimming resolution, maintaining color consistency and thermal stability across 125 °C ambient environments. | Use Scenario: High-intensity strobed illumination for high-speed inspection of moving parts on factory automation lines. IC Role / Device Role / Timing Role: Constant-current LED driver triggered by encoder signals to deliver precise microsecond-duration light pulses synchronized with image capture. Use Value: Delivers 2 A pulsed current with <200 ns PWM edge fidelity, eliminating motion blur and ensuring repeatable contrast in machine vision algorithms. |
| Rear Combination Lamp Dimming | Medical Endoscopic Light Source |
Use Scenario: Integrated tail/brake/turn signal module requiring smooth analog dimming for DRL and high-contrast PWM for brake flash alerts. IC Role / Device Role / Timing Role: Dual-mode current regulator supporting simultaneous analog dimming (200:1) and PWM dimming (1000:1) on shared LED strings. Use Value: Achieves regulatory-compliant luminance gradation (SAE J583/J585) while maintaining thermal margin during extended DRL operation. | Use Scenario: Compact, fanless endoscope light engine requiring silent, low-EMI, and thermally isolated LED current regulation. IC Role / Device Role / Timing Role: Isolated buck driver powering white LED arrays with strict current accuracy (<±2%) and zero audible noise. Use Value: Provides stable 2 A output with <1% RMS current ripple, eliminating LED-induced image artifacts and meeting IEC 60601-1 creepage/safety spacing in HVSSOP layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS92515HV | Non-automotive grade; no AEC-Q100 qualification; same 65 V input and 2 A capability. | Lacks automotive thermal and reliability validation; unsuitable for safety-critical lighting. | Select only for industrial or commercial lighting where AEC-Q100 is not mandated. |
| LM3409HV-Q1 | External P-channel FET required; constant OFF-time control; 75 V max input; no integrated FET. | Higher BOM count and layout complexity; better suited for higher-voltage (>65 V) or lower-current (<1 A) designs. | Choose when input exceeds 65 V or when discrete FET selection is preferred for thermal partitioning. |
Compared with TPS92515HV and LM3409HV-Q1, the TPS92515AHVQDGQTQ1 uniquely combines AEC-Q100 Grade 1 qualification, integrated 290-mΩ FET, and 10,000:1 shunt PWM dimming in a thermally optimized HVSSOP package-making it the only drop-in solution for automotive matrix headlamp production.
Availability
TPS92515AHVQDGQTQ1 is available at Aetrix Electronics and suitable for automotive headlamp systems, industrial machine vision illuminators, and medical endoscopic light sources requiring stable component supply, long-term lifecycle support, and AEC-Q100 compliance.
Supply support for TPS92515AHVQDGQTQ1 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 ICs, with deep expertise in automotive-grade reliability and functional safety.
The TPS92515AHVQDGQTQ1 belongs to TI's automotive LED driver product line, designed specifically for high-reliability, high-brightness lighting in AFS, DRL, and rear lamp modules where precision current regulation and multi-dimming flexibility are critical.
FAQ
What is the maximum continuous output current supported by the TPS92515AHVQDGQTQ1?
The TPS92515AHVQDGQTQ1 supports up to 2 A average LED current under proper thermal management. This rating assumes operation within recommended conditions: VIN = 40 V, TA ≤ 125 °C, and PCB layout with full thermal pad soldering to ≥4 cm² of 2 oz copper. At 150 °C junction temperature, RDS(on) rises to 650 mΩ, reducing practical continuous current to ~1.5 A in sealed enclosures without forced airflow.
How does the TPS92515AHVQDGQTQ1 achieve 10,000:1 shunt PWM dimming ratio?
The TPS92515AHVQDGQTQ1 achieves 10,000:1 shunt PWM dimming by combining precise OFF-time control derived from VOUT (or VCC during shunt) with inherent cycle-by-cycle current limiting. During shunt FET activation, the COFF pin is re-routed to VCC to maintain constant inductor ripple, preserving linear current response across the full dimming range without external compensation or calibration.
Can the TPS92515AHVQDGQTQ1 operate below 5.5 V input voltage?
Yes-the TPS92515AHVQDGQTQ1 sustains operation down to 5.15 V after startup, enabled by its VIN undervoltage lockout hysteresis (150–225 mV). However, below 5.5 V, the integrated FET's RDS(on) increases significantly, reducing efficiency and maximum deliverable current. Startup requires ≥5.5 V; operation below that threshold is only possible post-startup during transient battery dips.
What is the purpose of the DRN pin on the TPS92515AHVQDGQTQ1?
On the TPS92515AHVQDGQTQ1, the DRN pin is the internal N-channel FET drain terminal, internally connected to the CSN node. It serves as the high-side current sense reference point and must be routed with minimal trace inductance to avoid noise coupling into the current sense path-critical for maintaining ±3% LED current accuracy across temperature and load conditions.
Does the TPS92515AHVQDGQTQ1 require external loop compensation?
No-the TPS92515AHVQDGQTQ1 uses constant OFF-time (COFT) peak-current control architecture, which eliminates the need for external loop compensation components. Stability is inherently maintained across continuous and discontinuous conduction modes, enabling faster transient response and simplified PCB layout compared to voltage-mode or current-mode controllers requiring compensation networks.
TPS92515AHVQDGQTQ1 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):
- 65V
- Voltage - Output:
- -
- Current - Output / Channel:
- 2A
- Frequency:
- 1MHz
- Dimming:
- Analog, PWM
- Applications:
- Lighting
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-HVSSOP
TPS92515AHVQDGQTQ1 FAQ
1.How can I place an order for TPS92515AHVQDGQTQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS92515AHVQDGQTQ1 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 TPS92515AHVQDGQTQ1 reliable?
The price and inventory of TPS92515AHVQDGQTQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS92515AHVQDGQTQ1 is usually 5 days.
3.What payment methods are accepted for TPS92515AHVQDGQTQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS92515AHVQDGQTQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS92515AHVQDGQTQ1?
TPS92515AHVQDGQTQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS92515AHVQDGQTQ1 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 TPS92515AHVQDGQTQ1?
For technical support, including TPS92515AHVQDGQTQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS92515AHVQDGQTQ1 requirements.
6.How does Aetrix verify that TPS92515AHVQDGQTQ1 is sourced from the original manufacturer or authorized distributors?
All TPS92515AHVQDGQTQ1 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 TPS92515AHVQDGQTQ1 meets industry standards.
7.What is the process for return or replacement of TPS92515AHVQDGQTQ1?
All TPS92515AHVQDGQTQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS92515AHVQDGQTQ1, 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 TPS92515AHVQDGQTQ1 part is unused and in its original packaging.
Return procedure for TPS92515AHVQDGQTQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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