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Texas Instruments TPS92515AHVQDGQRQ1
- Part No.:
- TPS92515AHVQDGQRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 10-PowerTFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS92515AHVQDGQRQ1.pdf
- Description:
- IC LED DRV RGLTR PWM 2A 10HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,621
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Product details
Overview
TPS92515AHVQDGQRQ1 from Texas Instruments is an AEC-Q100 Grade 1 qualified automotive 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 to 65 V input range and supports 10,000:1 shunt PWM dimming. It is used in adaptive front lighting systems (AFS) for LED switched matrix headlamps.
For engineers reviewing the TPS92515AHVQDGQRQ1 datasheet, TPS92515AHVQDGQRQ1 pinout, TPS92515AHVQDGQRQ1 application, or TPS92515AHVQDGQRQ1 equivalent, key selection criteria include its constant off-time control architecture, high-side current sense accuracy (±18 mV typical threshold offset), thermal shutdown at 175°C, HVSSOP-10 package with exposed thermal pad, and compatibility with shunt-FET dimming topologies requiring linear response across full dimming range.
Technical Context
The TPS92515AHVQDGQRQ1 uses a peak-current-controlled, constant OFF-time hysteretic architecture that eliminates loop compensation while enabling fast transient response. Its high-side differential current sense comparator features low 240 mV typical threshold with ±18 mV variation and 75–130 ns falling delay, ensuring stable regulation under varying junction temperatures.
It integrates a thermally monitored 290-mΩ N-channel MOSFET with RDS(on) drift ≤210 mΩ from 25°C to 150°C, and derives OFF-time from output voltage via COFF pin to maintain constant inductor ripple-critical for linear shunt-FET dimming. The device supports three dimming methods simultaneously: analog (200:1), PWM (1000:1), and shunt PWM (10,000:1).
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 down to 5.15 V after startup. |
| Max Output Current | 2 A average - enables high-brightness LED strings in DRL, high/low beam, and rear lighting without external FET. |
| Current Sense Threshold | 240 mV typ (VIADJ = VCC) - low-offset high-side sensing minimizes power loss in milliohm sense resistors. |
| Shunt PWM Dimming Ratio | 10,000:1 - enables precise grayscale control in LED matrix AFS applications with minimal flicker. |
| Thermal Shutdown | 175°C with 10°C hysteresis - protects internal FET during sustained overloads or poor PCB thermal design. |
| Package Thermal Resistance | RθJC(bot) = 5.3°C/W - exposed thermal pad directly to PCB ground enables >2 W continuous dissipation in standard 2-layer layout. |
| Control Architecture | Constant OFF-time hysteretic - no compensation required; frequency auto-adjusts with VIN/VLED to maintain constant ΔIL-PP. |
Pinout & Package
HVSSOP-10 package with 3 mm × 3 mm body and exposed thermal pad connected to GND for optimal heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| COFF | OFF-time timing input | Resistor-capacitor network sets OFF-time; voltage ramp derived from VOUT ensures constant inductor ripple for linear dimming. |
| CSN | High-side current sense negative | Kelvin connection point for sense resistor; referenced to VIN to enable accurate high-side sensing without ground disruption. |
| DRN | Internal FET drain | Internally connected to CSN node; must be routed with low-inductance path to minimize switching noise on current sense path. |
| IADJ | Analog current adjust reference | 10:1 internal divider sets peak current threshold (e.g., 2.2 V → 220 mV); clamped at 2.4 V for overvoltage protection. |
| PWM | Digital dimming enable | Active-high input; modulates output current at external PWM frequency without requiring external gate driver. |
| SW | Switch node | Source of internal N-FET; connects to output inductor; requires tight layout with BOOT capacitor to minimize ringing. |
| VCC | 5-V regulated output | Supplies internal circuitry and can source ≤500 µA for external bias; requires ≥1 µF ceramic decoupling to GND. |
| VIN | Power input & current sense positive | Primary input rail; also serves as high-side current sense reference - must be low-impedance with bulk capacitance. |
| BOOT | High-side gate drive supply | Charged via diode from VCC; supplies gate drive for internal N-FET; requires ceramic capacitor to SW for bootstrap operation. |
| GND | Signal and power ground | Common return for all analog and power circuits; thermal pad must be soldered to solid GND 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 electrical characterization - suitable for front-of-vehicle lighting modules. |
| Integrated 290-mΩ N-channel FET | Eliminates external switch and associated gate drive complexity; RDS(on) remains ≤600 mΩ at 150°C for predictable thermal margin. |
| 10,000:1 shunt PWM dimming | Enables pixel-level brightness control in LED matrix headlamps without color shift or audible noise from low-frequency PWM. |
| No loop compensation required | Constant OFF-time architecture simplifies BOM and layout - reduces design cycle time for automotive lighting ECU integration. |
| Thermally enhanced HVSSOP-10 | Exposed thermal pad lowers RθJC(bot) to 5.3°C/W - allows 2 A operation on 2-layer PCB with 1-in² copper area without heatsink. |
Applications
| Automotive Adaptive Front Lighting (AFS) | Industrial Machine Vision Illumination |
|---|---|
Use Scenario: LED switched matrix headlamp with individually addressable zones for glare-free high beam and dynamic cornering light. IC Role / Device Role / Timing Role: Primary buck controller regulating constant current per LED string; synchronizes shunt-FET dimming with vehicle CAN bus commands. Use Value: Enables 10,000:1 dimming linearity across 100+ zones while maintaining <±3% current accuracy over temperature - critical for ECE R149 compliance. | Use Scenario: High-intensity strobed illumination for high-speed camera capture in factory automation inspection systems. IC Role / Device Role / Timing Role: Constant-current LED driver triggered by encoder-synchronized PWM signal to freeze motion at microsecond exposure times. Use Value: Delivers 2 A pulsed current with <130 ns CSN-to-SW delay and inherent cycle-by-cycle current limiting - prevents LED damage during rapid on/off cycling. |
| Automotive Rear Combination Lamp | Medical Endoscopic Light Source |
Use Scenario: Integrated tail/brake/turn signal module using single TPS92515AHVQDGQRQ1 per function with shared thermal management. IC Role / Device Role / Timing Role: Buck regulator with analog dimming for DRL intensity and PWM dimming for turn signal flash rate modulation. Use Value: Supports simultaneous analog + PWM dimming without external logic; maintains thermal shutdown at 175°C during brake lamp surge conditions. | Use Scenario: Compact, fanless endoscope light engine requiring silent, flicker-free illumination with precise intensity control. IC Role / Device Role / Timing Role: Primary LED current controller implementing 200:1 analog dimming via IADJ pin and 1000:1 PWM dimming for surgical field adaptation. Use Value: Achieves <0.5% RMS current ripple and <±2% total current error across 0–2 A range - meets IEC 60601-2-57 photobiological safety requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS92515QDGQRQ1 | 42 V max input (vs. 65 V); identical pinout, features, and dimming capabilities. | Suitable for 12 V/24 V systems only; not rated for 48 V commercial vehicle or hybrid battery interfaces. | Select when input voltage never exceeds 42 V and cost optimization is prioritized over HV headroom. |
| LM3409HVQ1WGRQ1 | External P-channel FET required; 75 V max input; constant OFF-time but no integrated switch or shunt dimming support. | Requires external gate driver and discrete FET; supports higher input voltages but lacks native shunt-FET dimming interface. | Select when system requires >65 V input or needs independent high-side switch control beyond integrated capability. |
Compared with TPS92515QDGQRQ1, the TPS92515AHVQDGQRQ1 provides 23 V higher input rating for 48 V architectures, while LM3409HVQ1WGRQ1 trades integration for voltage scalability and external FET flexibility - neither offers native 10,000:1 shunt PWM dimming.
Availability
TPS92515AHVQDGQRQ1 is available at Aetrix Electronics and suitable for automotive lighting, industrial machine vision, medical endoscopy, and heavy-duty vehicle signaling requiring stable component supply across extended temperature and long product lifecycles.
Supply support for TPS92515AHVQDGQRQ1 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, embedded processing, and automotive ICs, with leadership in power management and LED driver innovation.
The TPS92515AHV-Q1 product line targets AEC-Q100-compliant automotive lighting systems requiring high reliability, wide input range, and advanced dimming - especially LED matrix headlamps and adaptive driving beam solutions.
FAQ
What is the maximum input voltage supported by the TPS92515AHVQDGQRQ1?
The TPS92515AHVQDGQRQ1 supports a maximum input voltage of 65 V, with absolute maximum rating of 65 V on VIN, DRN, and CSN pins. It operates continuously from 5.5 V to 65 V and sustains operation down to 5.15 V after startup. This makes the TPS92515AHVQDGQRQ1 suitable for 12 V, 24 V, and 48 V automotive battery systems including start-stop and load-dump transients.
How does the TPS92515AHVQDGQRQ1 achieve 10,000:1 shunt PWM dimming?
The TPS92515AHVQDGQRQ1 achieves 10,000:1 shunt PWM dimming by combining its constant OFF-time architecture with dedicated COFF pin configuration for shunted-output conditions. When the shunt FET shorts the LED string, VOUT collapses; the device uses VCC as alternate COFF charging source to maintain constant inductor ripple, preserving linear current response across the full dimming range - a capability confirmed in TI's SLUSDG2 datasheet Figure 14 and Section 8.3.4.
What is the purpose of the DRN pin on the TPS92515AHVQDGQRQ1?
On the TPS92515AHVQDGQRQ1, the DRN (Drain) pin is the internal N-channel MOSFET drain terminal, internally connected to the CSN node. It serves as the high-side current sense reference point and must be routed with low-inductance, Kelvin-connected traces to the sense resistor. This configuration enables accurate high-side sensing without disrupting the ground path - a key enabler for stable current regulation in floating LED string topologies.
Does the TPS92515AHVQDGQRQ1 require external loop compensation components?
No, the TPS92515AHVQDGQRQ1 does not require external loop compensation components. Its constant OFF-time hysteretic control architecture inherently stabilizes the feedback loop without compensation networks. This eliminates the need for external resistors, capacitors, or op-amps in the control path - reducing BOM count, board space, and design validation effort while delivering fast transient response as documented in Section 8.1 and Figure 11 of the SLUSDG2 datasheet.
What thermal protection mechanisms are built into the TPS92515AHVQDGQRQ1?
The TPS92515AHVQDGQRQ1 includes integrated thermal protection with a shutdown threshold of 175°C and 10°C hysteresis. A dedicated thermal sensor located adjacent to the internal N-channel FET triggers shutdown before silicon damage occurs. Recovery requires junction temperature to fall below 165°C. This protection is active across the full operating range and is characterized per AEC-Q100 requirements - critical for automotive under-hood applications where airflow is limited.
TPS92515AHVQDGQRQ1 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
TPS92515AHVQDGQRQ1 FAQ
1.How can I place an order for TPS92515AHVQDGQRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS92515AHVQDGQRQ1 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 TPS92515AHVQDGQRQ1 reliable?
The price and inventory of TPS92515AHVQDGQRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS92515AHVQDGQRQ1 is usually 5 days.
3.What payment methods are accepted for TPS92515AHVQDGQRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS92515AHVQDGQRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS92515AHVQDGQRQ1?
TPS92515AHVQDGQRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS92515AHVQDGQRQ1 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 TPS92515AHVQDGQRQ1?
For technical support, including TPS92515AHVQDGQRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS92515AHVQDGQRQ1 requirements.
6.How does Aetrix verify that TPS92515AHVQDGQRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS92515AHVQDGQRQ1 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 TPS92515AHVQDGQRQ1 meets industry standards.
7.What is the process for return or replacement of TPS92515AHVQDGQRQ1?
All TPS92515AHVQDGQRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS92515AHVQDGQRQ1, 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 TPS92515AHVQDGQRQ1 part is unused and in its original packaging.
Return procedure for TPS92515AHVQDGQRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS92515AHVQDGQRQ1 Tags
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