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Texas Instruments TPS92515QDGQTQ1
- Part No.:
- TPS92515QDGQTQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 10-PowerTFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS92515QDGQTQ1.pdf
- Description:
- IC LED DRV RGLTR PWM 2A 10HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,525
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Product details
Overview
TPS92515QDGQTQ1 from Texas Instruments is an AEC-Q100 Grade 1 qualified monolithic buck LED driver with integrated 290-mΩ N-channel FET, high-side current sensing, and shunt FET PWM dimming capability. It delivers constant average LED current up to 2 A across 5.5 V–42 V input, supports 10,000:1 shunt PWM dimming, and operates in automotive headlamp matrix and DRL systems.
For engineers reviewing the TPS92515QDGQTQ1 datasheet, TPS92515QDGQTQ1 pinout, TPS92515QDGQTQ1 application, or TPS92515QDGQTQ1 equivalent, key selection considerations include its constant off-time control architecture, thermal shutdown at 175°C, VIN UVLO falling threshold of 4.90 V, and HVSSOP-10 package with exposed thermal pad for automotive-grade thermal management.
Technical Context
The TPS92515QDGQTQ1 implements a peak-current-controlled, constant off-time (COT) buck regulator with inherent cycle-by-cycle current limiting and no loop compensation required. Its high-side current sense comparator features 240 mV typical threshold with ±16 mV variation and 75–130 ns falling delay, enabling precise LED current regulation under fast transients.
Shunt FET dimming is supported via dedicated PWM pin with 0.95–1.05 V rising threshold and 50–150 mV hysteresis, while OFF-time is programmable via COFF pin using external RC network referenced to VOUT or VCC-ensuring linear dimming response even during output shorting in switched-matrix AFS applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5.5 V to 42 V - supports 12 V/24 V automotive battery rails with 5.15 V post-startup operation. |
| Max Output Current | 2 A average - enables high-brightness LED strings in DRL and low-beam applications without external FET. |
| Integrated FET RDS(on) | 290 mΩ typ at 25°C - reduces conduction loss and simplifies layout versus external-FET solutions. |
| Dimming Range | 10,000:1 via shunt PWM - achieves high-contrast illumination control for adaptive front lighting systems. |
| Thermal Shutdown | 175°C with 10°C hysteresis - protects against sustained overloads in enclosed headlamp housings. |
| Current Sense Threshold | 240 mV typ, adjustable via IADJ - allows analog dimming across 200:1 range with low sense resistor losses. |
| Package | HVSSOP-10 (3 mm × 3 mm) with exposed thermal pad - provides 5.3°C/W junction-to-case (bottom) resistance for high-power density mounting. |
Pinout & Package
HVSSOP-10 package with exposed thermal pad connected to GND; thermally enhanced for automotive under-hood operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| COFF | OFF-time timing input | RC network sets converter frequency; dual-source (VOUT/VCC) configuration maintains linear shunt dimming during output shorting. |
| CSN | High-side current sense negative | Kelvin connection point for milliohm sense resistor; enables accurate high-side sensing without ground path interference. |
| DRN | Internal FET drain | Connected internally to CSN node; forms high-side current sense path with VIN–CSN differential measurement. |
| IADJ | Analog dimming reference input | Adjusts peak current threshold from 211.5 mV to 251 mV; enables 200:1 analog dimming via external voltage divider. |
| PWM | Digital dimming enable | 0.95–1.05 V logic threshold; controls shunt FET switching for 10,000:1 PWM dimming without external gate driver. |
| VIN | Power input & current sense positive | Supplies IC bias and serves as high-side sense reference; supports 42 V max with 45 V absolute rating. |
| BOOT | High-side gate drive supply | Capacitor between BOOT–SW powers internal FET driver; diode from VCC ensures bootstrap recharge during each cycle. |
| GND | Power and signal reference | Common return for all circuits; thermal pad must be soldered to PCB ground plane for thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Rated for –40°C to +125°C ambient operation with full specification compliance - suitable for front-of-vehicle lighting modules. |
| Constant off-time control | No external compensation required; enables fast transient response and stable operation across CCM/DCM boundary. |
| Integrated thermal protection | Junction shutdown at 175°C with 10°C hysteresis - prevents latch-up during thermal overload in sealed assemblies. |
| Low-offset high-side comparator | 240 mV typical threshold with ±16 mV variation - minimizes current sense error and improves dimming linearity. |
| Multiple dimming methods | Simultaneous analog (200:1) + PWM (1000:1) + shunt PWM (10,000:1) - supports hybrid dimming for precision AFS beam shaping. |
Applications
| Automotive Adaptive Front Lighting | Automotive Daytime Running Lights |
|---|---|
|
Use Scenario: Dynamic LED matrix headlamps with pixel-level beam control for glare-free high-beam assist. IC Role / Device Role / Timing Role: Primary buck controller regulating individual LED segments; synchronizes shunt FET dimming with vehicle camera input. Use Value: 10,000:1 shunt PWM dimming enables >1000:1 contrast ratio per segment, meeting UNECE R149 requirements. |
Use Scenario: High-efficiency DRL modules mounted in front grilles with limited airflow and high ambient temperature. IC Role / Device Role / Timing Role: Constant-current LED driver with thermal foldback; maintains luminance across –40°C to +105°C ambient. Use Value: Integrated 290-mΩ FET and 175°C thermal shutdown eliminate external components while ensuring reliability at 125°C junction. |
| Industrial Machine Vision Illumination | Commercial Emergency Exit Signage |
|
Use Scenario: Strobe-capable LED arrays for high-speed inspection systems requiring microsecond-level flash timing. IC Role / Device Role / Timing Role: Fast-response current source triggered by encoder signals; supports <1 µs PWM edge-to-light latency. Use Value: 75 ns CSN falling delay and inherent cycle-by-cycle current limit ensure consistent flash intensity across 10 kHz strobe rates. |
Use Scenario: Self-contained exit signs with battery backup, requiring ultra-low quiescent current during standby. IC Role / Device Role / Timing Role: Dual-mode driver operating from AC line or 12 V battery; enters low-IQ sleep mode when mains fails. Use Value: 0.85 mA operating current and VIN UVLO hysteresis of 190 mV prevent false turn-off during brownout conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3409Q0MHX/NOPB | External P-channel FET; 75 V max input; constant off-time control; no integrated shunt dimming logic. | Requires external gate driver and shunt FET for PWM dimming; suited for higher-voltage industrial LED strings. | Choose when >42 V input or discrete FET control is required; not drop-in due to different topology and pinout. |
| TPS92630QPWPRQ1 | Three-channel linear LED driver; 40 V max; analog/PWM dimming only; no buck conversion or integrated FET. | Designed for RGB color mixing and low-noise applications; lacks switching efficiency for high-power DRL. | Choose for multi-channel color-tunable lighting where EMI sensitivity prohibits switching regulators. |
Compared with LM3409Q0MHX/NOPB and TPS92630QPWPRQ1, the TPS92515QDGQTQ1 uniquely integrates buck conversion, high-side sensing, and shunt FET dimming in one AEC-Q100 Grade 1 package-reducing BOM count by 4+ components versus external-FET alternatives while enabling matrix-level beam control unattainable with linear drivers.
Availability
TPS92515QDGQTQ1 is available at Aetrix Electronics and suitable for automotive headlamp systems, industrial machine vision illuminators, and commercial emergency signage requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TPS92515QDGQTQ1 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 company specializing in analog and embedded processing technologies, with leadership in automotive, industrial, and power management ICs.
The TPS92515 family is designed specifically for high-reliability automotive LED lighting, emphasizing AEC-Q100 compliance, thermal robustness, and advanced dimming architectures for adaptive front lighting systems.
FAQ
What is the maximum input voltage rating for the TPS92515QDGQTQ1?
The TPS92515QDGQTQ1 has an absolute maximum input voltage rating of 45 V on the VIN pin, with recommended operation up to 42 V. This supports 24 V nominal automotive systems with load dump tolerance, and the device continues operating down to 5.15 V after startup-ensuring functionality during cold-crank events. The TPS92515QDGQTQ1 is not rated for 65 V operation; that specification applies only to the HV variants (e.g., TPS92515HV-Q1).
How does the TPS92515QDGQTQ1 achieve 10,000:1 dimming ratio?
The TPS92515QDGQTQ1 achieves 10,000:1 dimming via dedicated shunt FET PWM dimming architecture: the PWM pin directly controls an external shunt transistor across the LED string, while the internal buck regulator maintains constant average current during unshunted periods. This decouples dimming frequency from switching frequency, enabling high-resolution brightness control without visible flicker-even at low duty cycles-making it ideal for adaptive front lighting systems requiring precise beam shaping.
Does the TPS92515QDGQTQ1 require external loop compensation?
No, the TPS92515QDGQTQ1 uses constant off-time (COT) control architecture with inherent stability across input/output voltage variations and load steps. There is no need for external compensation components such as type-II or type-III networks. This simplifies design, reduces bill-of-materials cost, and improves transient response-especially critical in automotive lighting where rapid beam adjustments must occur within milliseconds.
What thermal management provisions does the TPS92515QDGQTQ1 include?
The TPS92515QDGQTQ1 incorporates junction temperature monitoring with thermal shutdown at 175°C and 10°C hysteresis, plus a thermally enhanced HVSSOP-10 package featuring an exposed bottom thermal pad. When soldered to a 4-layer PCB with 1-in² copper pour, it achieves 5.3°C/W junction-to-board thermal resistance-enabling 2 A continuous operation in ambient temperatures up to 105°C without forced airflow, as verified in TI's TPS92515EVM test reports.
Can the TPS92515QDGQTQ1 operate in discontinuous conduction mode (DCM)?
Yes, the TPS92515QDGQTQ1 inherently operates in both continuous and discontinuous conduction modes without mode transition issues or instability. Its constant off-time control and cycle-by-cycle current limiting allow seamless DCM entry at light loads-critical for maintaining dimming linearity and low standby current in applications like automotive position lamps, where LED current drops below 50 mA while preserving regulation accuracy.
TPS92515QDGQTQ1 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
TPS92515QDGQTQ1 FAQ
1.How can I place an order for TPS92515QDGQTQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS92515QDGQTQ1 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 TPS92515QDGQTQ1 reliable?
The price and inventory of TPS92515QDGQTQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS92515QDGQTQ1 is usually 5 days.
3.What payment methods are accepted for TPS92515QDGQTQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS92515QDGQTQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS92515QDGQTQ1?
TPS92515QDGQTQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS92515QDGQTQ1 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 TPS92515QDGQTQ1?
For technical support, including TPS92515QDGQTQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS92515QDGQTQ1 requirements.
6.How does Aetrix verify that TPS92515QDGQTQ1 is sourced from the original manufacturer or authorized distributors?
All TPS92515QDGQTQ1 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 TPS92515QDGQTQ1 meets industry standards.
7.What is the process for return or replacement of TPS92515QDGQTQ1?
All TPS92515QDGQTQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS92515QDGQTQ1, 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 TPS92515QDGQTQ1 part is unused and in its original packaging.
Return procedure for TPS92515QDGQTQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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