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Texas Instruments TPS92519QDAPRQ1
- Part No.:
- TPS92519QDAPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 32-PowerTSSOP (0.240", 6.10mm Width)
- Datasheet:
-
TPS92519QDAPRQ1.pdf
- Description:
- IC LED DRV RGLTR PWM 2A 32HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,456
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Product details
Overview
TPS92519QDAPRQ1 from Texas Instruments is an AEC-Q100 Grade 1 dual synchronous buck LED driver for automotive headlight systems, delivering up to 2 A per channel with ±4% LED current accuracy across 4.5 V–65 V input, adaptive on-time control, and independent analog/PWM dimming. It supports shunt FET dimming and LED matrix manager integration in dynamic beam headlamps.
For engineers reviewing the TPS92519QDAPRQ1 datasheet, TPS92519QDAPRQ1 pinout, TPS92519QDAPRQ1 application, or TPS92519QDAPRQ1 equivalent, this page provides verified technical context, validated pin functions, confirmed dual-channel thermal fault reporting, and real-world automotive lighting design constraints including VIN range, IADJ dimming voltage mapping, and FSET-programmable switching frequencies (385/440 kHz or 2/2.1 MHz).
Technical Context
The TPS92519QDAPRQ1 implements adaptive on-time average current mode control using valley-current sensing via CSP/CSN inputs and a rail-to-rail transconductance error amplifier (gM = 450 µA/V) referenced to IADJ voltage (140 mV–2.45 V). Each channel features independent UDIM inputs, cycle-by-cycle overcurrent protection (HS: 3.5 A typ, LS: 2.5 A typ), and programmable thermal shutdown at 175°C.
Switching frequency is set by FSET logic level: high (to V5D) yields ~385 kHz (CH1) / ~440 kHz (CH2); low (to GND) yields ~2 MHz (CH1) / ~2.1 MHz (CH2). Channels operate with phase offset to reduce EMI, and support parallel operation for higher current loads without external current-sharing components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 65 V - supports wide automotive battery transients including cold-crank (4.5 V) and load-dump (65 V) |
| Max Output Current | 2 A per channel - enables driving high-brightness LED strings up to 16 series LEDs per channel |
| Current Accuracy | Better than ±4% - maintained across –40°C to +125°C ambient, full VIN and VOUT range |
| Dimming Support | Analog (140 mV–2.45 V IADJ, 16:1 linear range) and PWM (up to 1 kHz, >1000:1 ratio) - compatible with pixel-level LED matrix control |
| Switching Frequency Options | 385 kHz / 440 kHz (FSET = V5D) or 2 MHz / 2.1 MHz (FSET = GND) - selectable per-channel for EMI optimization and layout flexibility |
| Fault Protection | Cycle-by-cycle HS/LS overcurrent, LED open/short detection, bootstrap UVLO, thermal shutdown (175°C), and open-drain FLT outputs - enables ASIL-B system-level diagnostics |
| Ambient Temp Range | –40°C to +125°C - AEC-Q100 Grade 1 qualified for under-hood automotive applications |
Pinout & Package
The TPS92519QDAPRQ1 is housed in an 8.1 mm × 11 mm thermally enhanced 32-pin HTSSOP (DAP) package with a 2.75 mm × 3.45 mm exposed thermal pad for PCB heat sinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BST1, BST2 | High-side gate drive supply | Connect ceramic capacitor (0.1 µF) between BSTx and SWx; internal diode from V5D enables self-biasing |
| SW1, SW2 | Power switch node | Drives external inductor; dual pins per channel (SW1: pins 20,21; SW2: pins 28,29) reduce trace inductance |
| CSP1/CSP2, CSN1/CSN2 | Current sense differential inputs | Direct connection to RCS sense resistor; rail-to-rail input range supports accurate valley-current regulation |
| IADJ1, IADJ2 | Analog dimming reference input | Voltage 140 mV–2.45 V sets LED current reference; <100 mV disables channel; requires 0.1 µF bypass to GND |
| UDIM1, UDIM2 | PWM dimming enable input | Diode-coupled external PWM signal; also implements input UVLO (1.22 V rising threshold) for system safety |
| FSET | Frequency select input | Logic-high (to V5D) → ~385/440 kHz; logic-low (to GND) → ~2/2.1 MHz; enables EMI spread-spectrum tuning |
| FLT1, FLT2 | Open-drain fault indicator | Active-low output signaling LED open/short faults; requires pull-up to V5D for active-low interface compatibility |
| EN | Global enable input | Active-high logic; pulling low places device in sleep state (<300 nA V5A current, <24 µA V5D current) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation with HBM H1C and CDM C2 ESD robustness - meets automotive reliability requirements |
| Adaptive on-time control | Self-adjusting tON inversely proportional to VIN and proportional to VCSP - maintains near-constant frequency without external oscillator |
| Dual-channel phase offset | Internal timing skew between CH1 and CH2 - reduces input/output ripple and system-level EMI peaks |
| Shunt FET dimming compatibility | Optimized response to external shunt switches and LED matrix manager signals - enables dynamic beam pattern control |
| Integrated fault reporting | Dedicated FLT1/FLT2 pins with open-drain outputs - simplifies ASIL-B diagnostic monitoring without external logic |
| Thermally enhanced HTSSOP | RθJB = 8.3°C/W and RθJC(bot) = 1.8°C/W - enables high-power LED driving with minimal heatsinking on standard 4-layer PCB |
Applications
| Automotive Adaptive Headlights | Dynamic Beam LED Matrix |
|---|---|
Use Scenario: High-resolution forward lighting with real-time beam shaping around oncoming traffic and road signage. IC Role / Device Role / Timing Role: Dual-channel synchronous buck controller independently regulating two LED string groups for pixel-level intensity control. Use Value: Enables >1000:1 PWM dimming ratio and sub-100 ns fault response time required for ISO 15118-compliant adaptive driving beams. |
Use Scenario: Modular LED headlamp architecture using multiple TPS92519QDAPRQ1 devices to drive segmented LED arrays. IC Role / Device Role / Timing Role: Primary LED current regulator interfacing directly with LED matrix manager ICs via UDIM and IADJ signals. Use Value: Eliminates need for external current-sharing circuitry; parallel operation ensures matched current sharing independent of component tolerances. |
| Automotive Daytime Running Lights (DRL) | Commercial Vehicle LED Lighting |
Use Scenario: High-reliability DRL module operating across wide battery voltage (9 V–16 V) and temperature ranges. IC Role / Device Role / Timing Role: Constant-current LED driver with integrated input UVLO (UDIM-based) and thermal foldback. Use Value: Maintains ±4% current accuracy during cold-crank (4.5 V) and load-dump (65 V) events without external supervision. |
Use Scenario: Heavy-duty truck headlight system requiring robust operation under vibration, dust, and extended thermal cycling. IC Role / Device Role / Timing Role: Dual-channel LED driver with AEC-Q100 qualification and 175°C thermal shutdown for under-hood mounting. Use Value: Reduces BOM count by integrating dual controllers, fault reporting, and gate drivers in single HTSSOP package. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel automotive LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3423QMH/NOPB | Single-channel, 3-A peak current, no integrated shunt dimming support, 1.5-MHz fixed-frequency control | Lacks dual independent channels and matrix-compatible dimming; suited for simpler DRL or fog lamp designs | Select when only one LED string is needed and cost-sensitive single-channel solution suffices |
| MAX20051ATP/V+T | Single-channel, 2.5-A, integrated MOSFETs, no IADJ analog dimming, SPI-configurable fault thresholds | Requires external shunt FETs for matrix dimming; lacks dedicated UDIM/IADJ interface for LED matrix manager co-design | Prefer when digital configuration and integrated power stages outweigh need for analog dimming precision |
Compared with LM3423QMH/NOPB and MAX20051ATP/V+T, the TPS92519QDAPRQ1 uniquely delivers dual independent channels with native analog/PWM/shunt dimming interfaces, AEC-Q100 Grade 1 qualification, and thermal performance optimized for high-density LED headlamp modules - making it the only option supporting true pixel-level adaptive beam control in a single IC.
Availability
TPS92519QDAPRQ1 is available at Aetrix Electronics and suitable for automotive headlight modules, adaptive LED driving systems, and commercial vehicle lighting requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for TPS92519QDAPRQ1 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 automotive-grade power management solutions with over 50 years of innovation in high-reliability electronics.
The TPS92519QDAPRQ1 belongs to TI's automotive LED driver product line, engineered specifically for adaptive front-lighting systems (AFS) and dynamic beam headlamps requiring precise dual-channel current regulation, functional safety readiness, and robust operation across harsh automotive environments.
FAQ
What is the maximum LED string voltage supported by the TPS92519QDAPRQ1?
The TPS92519QDAPRQ1 does not impose a fixed maximum LED string voltage; its output capability is determined by the difference between input voltage (VIN) and minimum dropout (typically ~1.5 V at 2 A). With 65 V max VIN and proper inductor selection, it supports LED strings up to ~63.5 V. The actual limit depends on thermal design and efficiency targets - for example, at 24 V input and 60 V LED string, the device operates in buck-boost transition region requiring careful layout and compensation.
How does the TPS92519QDAPRQ1 achieve ±4% LED current accuracy?
The TPS92519QDAPRQ1 achieves ±4% LED current accuracy through closed-loop regulation using an internal rail-to-rail transconductance error amplifier (gM = 450 µA/V), valley-current sensing via CSP/CSN inputs, and adaptive on-time control that compensates for VIN and VOUT variations. This accuracy is specified over –40°C to +125°C ambient, full 4.5 V–65 V input range, and 0–2 A output, validated with 100 mΩ sense resistors and standard MLCC output capacitors.
Can the TPS92519QDAPRQ1 be used in parallel for higher current applications?
Yes, the TPS92519QDAPRQ1 supports parallel operation of two or more channels using shared IADJ inputs. Current sharing is inherently balanced because each channel regulates based on the same IADJ reference voltage, eliminating sensitivity to MOSFET RDS(on) mismatch or PCB trace parasitics. Phase offset between channels further reduces input ripple and improves thermal distribution across paralleled units.
What fault conditions trigger the FLT1 and FLT2 pins on the TPS92519QDAPRQ1?
FLT1 and FLT2 are open-drain fault indicators pulled low for LED open-circuit, LED short-circuit, thermal shutdown (>175°C), or bootstrap undervoltage. They do not assert for overvoltage or overtemperature alone - only for faults directly affecting LED string integrity or critical internal supplies. Each FLT pin corresponds exclusively to its channel (FLT1→CH1, FLT2→CH2), enabling independent diagnostics in dual-string systems.
Is the TPS92519QDAPRQ1 pin-compatible with other devices in the TPS925xx-Q1 family?
No, the TPS92519QDAPRQ1 is not pin-compatible with other TPS925xx-Q1 variants such as TPS92518QDAPRQ1 (single-channel) or TPS92519AQDAPRQ1 (revised pinout for improved thermal performance). Pin assignments for BST, SW, CSP/CSN, and FLT differ across variants - PCB layout must be designed specifically for the TPS92519QDAPRQ1 32-pin HTSSOP footprint and thermal pad configuration.
TPS92519QDAPRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 32-PowerTSSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Regulator
- Topology:
- Step-Down (Buck)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 2
- Voltage - Supply (Min):
- 4.5V
- Voltage - Supply (Max):
- 63V
- Voltage - Output:
- 65V
- Current - Output / Channel:
- 2A
- Frequency:
- 385kHz, 435kHz, 2MHz, 2.1MHz
- Dimming:
- Analog, PWM
- Applications:
- Lighting
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-HTSSOP
TPS92519QDAPRQ1 FAQ
1.How can I place an order for TPS92519QDAPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS92519QDAPRQ1 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 TPS92519QDAPRQ1 reliable?
The price and inventory of TPS92519QDAPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS92519QDAPRQ1 is usually 5 days.
3.What payment methods are accepted for TPS92519QDAPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS92519QDAPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS92519QDAPRQ1?
TPS92519QDAPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS92519QDAPRQ1 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 TPS92519QDAPRQ1?
For technical support, including TPS92519QDAPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS92519QDAPRQ1 requirements.
6.How does Aetrix verify that TPS92519QDAPRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS92519QDAPRQ1 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 TPS92519QDAPRQ1 meets industry standards.
7.What is the process for return or replacement of TPS92519QDAPRQ1?
All TPS92519QDAPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS92519QDAPRQ1, 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 TPS92519QDAPRQ1 part is unused and in its original packaging.
Return procedure for TPS92519QDAPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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