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Texas Instruments TPS92692QPWPRQ1
- Part No.:
- TPS92692QPWPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS92692QPWPRQ1.pdf
- Description:
- IC LED DRIVER CTRLR PWM 20HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:8,262
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Product details
Overview
TPS92692QPWPRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive LED controller for high-accuracy constant-current LED driver topologies (boost, buck, buck-boost). It delivers ±4% LED current accuracy over –40°C to +150°C, supports 4.5 V–65 V input, and integrates spread-spectrum frequency modulation for EMI reduction in exterior lighting systems.
For engineers reviewing the TPS92692QPWPRQ1 datasheet, TPS92692QPWPRQ1 pinout, TPS92692QPWPRQ1 application, or TPS92692QPWPRQ1 equivalent, key selection criteria include its rail-to-rail current sense amplifier (170.7 mV threshold), dual dimming capability (15:1 analog via IADJ + >1000:1 PWM), integrated P-channel gate driver (PDRV), and fault reporting via IMON and open-drain FLT.
Technical Context
The TPS92692QPWPRQ1 implements fixed-frequency peak current mode control with adaptive slope compensation (SLOPE pin) and internal triangle-wave PWM generation (RAMP pin). Its rail-to-rail current sense amplifier (CSP/CSN) enables precise LED current regulation across wide input/output voltage ranges, while the integrated 7.5 V VCC LDO and 5 V VREF regulators power internal circuitry and external bias networks.
It features comprehensive protection: cycle-by-cycle overcurrent detection (IS pin, 250 mV threshold), output overvoltage/undervoltage monitoring (OV pin), thermal shutdown (175°C), and soft-start control (SS pin). Fault conditions trigger an open-drain FLT output and optional auto-restart (hiccup) when FLT is tied to SS.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 65 V - supports automotive battery crank (4.5 V) and load-dump transients without external clamping. |
| LED Current Accuracy | Better than ±4% over –40°C to +150°C - enables stable luminance in under-hood and headlamp applications without recalibration. |
| Dimming Range | Analog: >15:1 linear via IADJ; PWM: >1000:1 via DIM/PWM - supports both smooth analog dimming and high-contrast signaling. |
| Switching Frequency | 80 kHz to 800 kHz (RT-programmable) - allows optimization of magnetics size vs. EMI performance in space-constrained modules. |
| Current Sense Threshold | 170.7 mV (typ) at VIADJ = 2.42 V - sets LED current with 100 mΩ sense resistor (ILED = 1.707 A), scalable via IADJ voltage. |
| Fault Reporting | IMON output = 14 × ILED × RCS; open-drain FLT flag - provides real-time current monitoring and discrete fault indication for ASIL-B diagnostics. |
| Thermal Rating | AEC-Q100 Grade 1 (–40°C to +125°C ambient, TJ up to +150°C) - qualified for front-end automotive lighting including DMS and adaptive driving beams. |
Pinout & Package
TPS92692QPWPRQ1 is housed in a thermally enhanced 20-pin HTSSOP (PWP) package (5.10 mm × 6.60 mm) with exposed thermal pad connected to GND for efficient heat dissipation in high-power LED drivers.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Main supply input | Accepts 4.5–65 V; powers internal LDOs and gate drivers - requires local RC filter (10 Ω + 10 nF) for noise immunity. |
| VREF | 5 V reference output | Stable 4.96 V (±2%) bias for external resistors (e.g., OV divider, RAMP, DM); decouple with 2.2–4.7 µF ceramic. |
| FLT | Open-drain fault indicator | Asserts low on overcurrent, OV, UV, or thermal fault; enables hiccup mode when tied to SS pin. |
| SS | Soft-start timing | Capacitor-programmed startup ramp; pulling low forces shutdown - critical for inrush control in boost configurations. |
| DM | Spread-spectrum modulator | Capacitor-programmed triangle wave (0.1–12 kHz) to dither switching frequency and reduce EMI peaks. |
| RT | Oscillator frequency set | Resistor-to-GND sets fSW (80–800 kHz); supports external clock sync via AC-coupled signal. |
| COMP | Error amplifier output | Transconductance amplifier (121 µA/V) output - connects compensation network (R+C) for loop stability. |
| IMON | Current monitor output | Voltage output = 14 × ILED × RCS - enables real-time current telemetry and cable-fault detection independent of topology. |
| IADJ | Analog dimming reference | High-impedance input (10.5 nA bias) - 0.14–2.25 V range sets current sense threshold (95.8–177.6 mV) for 15:1 dimming. |
| DIM/PWM | Dimming command input | Accepts 1–3 V analog (internal PWM gen) or direct PWM signal - Schmitt-triggered (1.8–2.2 V thresholds) for noise immunity. |
| VCC | 7.5 V bias supply | Internal LDO output (7.5 V ±0.5 V); powers GATE driver and logic - requires 2.2–4.7 µF local ceramic bypass. |
| GATE | N-channel MOSFET driver | Push-pull output (500 mA pulsed); drives main switching FET gate - low-side RGH/RGL resistances enable fast turn-on/turn-off. |
| IS | Switch current sense | Inputs switch current via RIS; 250 mV threshold triggers cycle-by-cycle current limit - includes 118 ns blanking. |
| GND | Analog & power ground | Common return for all signals; must connect to PCB ground plane via multiple vias under thermal pad. |
| SLOPE | Slope compensation input | Resistor-to-GND sets ramp amplitude - prevents subharmonic oscillation in duty cycles >50% (e.g., boost at high VIN/VOUT). |
| OV | Output voltage monitor | Resistor-divider input - detects overvoltage (1.228 V threshold) and undervoltage (100 mV threshold) for LED string protection. |
| CSP / CSN | Current sense differential inputs | Rail-to-rail inputs for LED current sense resistor (RCS); 14× gain amplifier rejects common-mode voltage up to 60 V. |
| PDRV | P-channel series FET driver | Gate driver for external P-MOSFET in series with LED string - enables safe PWM dimming and open-circuit disconnect. |
| RAMP | PWM generator timing | Capacitor-to-GND sets internal triangle wave frequency (100–2000 Hz); 249 kΩ to GND disables generator for direct PWM. |
Key Features
| Feature | Design Value |
|---|---|
| Spread-spectrum frequency modulation | Reduces EMI peak emissions by spreading switching energy across 0.1–12 kHz band - eliminates need for large EMI filters in headlamp modules. |
| Rail-to-rail current sense amplifier | Supports LED strings with CSP/CSN common-mode voltage up to 60 V - enables direct sensing in high-side boost or buck-boost configurations. |
| Dual dimming architecture | Simultaneous analog (IADJ) and PWM (DIM/PWM or internal generator) control - allows hybrid dimming for flicker-free low-frequency brightness adjustment. |
| Integrated P-channel gate driver (PDRV) | Drives external P-MOSFET for series dimming and fault isolation - enables fail-safe LED string disconnect during open-circuit or thermal events. |
| Comprehensive fault reporting | Independent IMON analog output + digital FLT flag - supports ISO 26262 ASIL-B diagnostic coverage for LED status and failure modes. |
| AEC-Q100 Grade 1 qualification | Validated for automotive use from –40°C to +125°C ambient - meets reliability, ESD (±2000 V HBM), and lifetime requirements for exterior lighting. |
Applications
| Automotive Headlamps | Driver Monitoring Systems (DMS) |
|---|---|
|
Use Scenario: Adaptive front-lighting system (AFS) with matrix LED arrays requiring precise per-segment current control and rapid PWM dimming for glare-free illumination. IC Role / Device Role / Timing Role: Primary LED current controller implementing peak current mode regulation, spread-spectrum EMI suppression, and dual-path dimming for dynamic beam shaping. Use Value: ±4% current accuracy ensures consistent lumen output across temperature; PDRV enables safe segment-level disconnect during fault conditions. |
Use Scenario: In-cabin infrared LED array for eye-tracking cameras, operating continuously in high-temperature cabin environments with strict EMI limits. IC Role / Device Role / Timing Role: Constant-current driver with internal PWM generator (RAMP-programmed) delivering stable 850 nm IR illumination synchronized to camera frame rate. Use Value: Spread-spectrum modulation avoids interference with camera sensor clocks; IMON output enables real-time LED health monitoring. |
| Emergency Exit Signs | Commercial Vehicle Lighting |
|
Use Scenario: Self-contained exit sign with battery backup, requiring wide-input operation (12–48 V DC), long-life LED drive, and fault diagnostics for compliance reporting. IC Role / Device Role / Timing Role: Buck-boost LED controller supporting 12–48 V input and regulated current output; FLT and IMON provide BMS-integrated status feedback. Use Value: 4.5–65 V input range accommodates battery degradation and charging transients; thermal shutdown (175°C) ensures reliability in enclosed enclosures. |
Use Scenario: Heavy-duty truck tail lamps and turn signals where vibration, wide temperature swings, and load-dump transients demand robust LED control. IC Role / Device Role / Timing Role: Boost-mode LED driver with OV/UV protection and cycle-by-cycle current limiting to survive 120 V load-dump events per ISO 7637-2. Use Value: 65 V absolute max VIN rating and integrated fault flags simplify compliance testing; SS pin enables controlled startup after cold cranking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3409QMYX/NOPB | Non-synchronous buck controller; no spread spectrum; no IMON output; lower accuracy (±8%); no PDRV output. | Lacks dual dimming, fault telemetry, and EMI reduction - suitable only for cost-sensitive non-automotive lighting. | Select only if AEC-Q100, ±4% accuracy, or diagnostic capability are not required. |
| TPS92630QPWPRQ1 | Three-channel version with identical architecture; shares same pinout except for additional channel pins; higher BOM cost. | Designed for multi-string RGB or white+amber configurations - over-specified for single-string applications. | Choose only when driving ≥2 independent LED strings with synchronized dimming and shared diagnostics. |
Compared with LM3409QMYX/NOPB and TPS92630QPWPRQ1, the TPS92692QPWPRQ1 uniquely balances automotive qualification, precision current regulation, EMI mitigation, and integrated diagnostics in a single-channel solution - making it optimal for safety-critical single-string exterior lighting.
Availability
TPS92692QPWPRQ1 is available at Aetrix Electronics and suitable for automotive exterior lighting, driver monitoring systems (DMS), and emergency lighting applications requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for TPS92692QPWPRQ1 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 TPS92692QPWPRQ1 belongs to TI's automotive LED controller product line, engineered specifically for high-accuracy, EMI-conscious, and ASIL-capable exterior lighting systems - including adaptive driving beams and DMS illumination.
FAQ
What is the maximum LED string voltage supported by the TPS92692QPWPRQ1?
The TPS92692QPWPRQ1 does not directly limit LED string voltage; instead, it supports topologies (boost, buck, buck-boost) where output voltage depends on external components. Its CSP/CSN inputs tolerate up to 60 V common-mode voltage, and the OV pin monitors output via resistor divider - enabling designs with >60 V LED strings when properly configured. The device's 65 V absolute max VIN rating also supports high-output boost stages.
How does the TPS92692QPWPRQ1 achieve ±4% LED current accuracy over temperature?
The TPS92692QPWPRQ1 achieves ±4% LED current accuracy through a combination of rail-to-rail current sense amplifier with low offset drift, temperature-compensated internal references (VREF, VCC), and a high-impedance IADJ input that scales the current sense threshold linearly. Its current sense threshold (e.g., 170.7 mV at 25°C) varies by less than ±1.5 mV from –40°C to +150°C, ensuring stable regulation across automotive operating conditions.
Can the TPS92692QPWPRQ1 be used in buck configuration?
Yes, the TPS92692QPWPRQ1 supports buck, boost, and buck-boost topologies. In buck mode, the LED string connects between VOUT and GND, with CSP/CSN sensing current through a low-side resistor. The device's rail-to-rail current amplifier and wide VIN range (4.5–65 V) make it suitable for buck applications such as 12 V automotive interior lighting, provided external MOSFETs and compensation are selected per TI's application notes.
What is the function of the PDRV pin on the TPS92692QPWPRQ1?
The PDRV pin on the TPS92692QPWPRQ1 is a dedicated gate driver output for an external P-channel MOSFET placed in series with the LED string. It enables PWM dimming independent of the main switching FET and provides safe open-circuit disconnect during faults. When asserted, PDRV pulls the P-MOSFET gate low to conduct; when inactive, it drives the gate high to block current - enhancing system safety in automotive lighting.
Does the TPS92692QPWPRQ1 support synchronization to an external clock?
Yes, the TPS92692QPWPRQ1 supports external clock synchronization via the RT pin. An AC-coupled external clock signal (100 nF capacitor) can be injected into RT to synchronize the internal oscillator, reducing beat frequencies in multi-phase or multi-lamp systems. The SYNC rising threshold is 2.5–3.1 V, and minimum pulse width is 100 ns - enabling robust sync in noisy automotive environments.
TPS92692QPWPRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Controller
- Topology:
- Step-Down (Buck), Step-Up (Boost)
- Internal Switch(s):
- No
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 4.5V
- Voltage - Supply (Max):
- 65V
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- 80kHz ~ 800kHz
- Dimming:
- Analog, PWM
- Applications:
- Lighting, Signage
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-HTSSOP
TPS92692QPWPRQ1 FAQ
1.How can I place an order for TPS92692QPWPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS92692QPWPRQ1 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 TPS92692QPWPRQ1 reliable?
The price and inventory of TPS92692QPWPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS92692QPWPRQ1 is usually 5 days.
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TPS92692QPWPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS92692QPWPRQ1 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 TPS92692QPWPRQ1?
For technical support, including TPS92692QPWPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS92692QPWPRQ1 requirements.
6.How does Aetrix verify that TPS92692QPWPRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS92692QPWPRQ1 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 TPS92692QPWPRQ1 meets industry standards.
7.What is the process for return or replacement of TPS92692QPWPRQ1?
All TPS92692QPWPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS92692QPWPRQ1, 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 TPS92692QPWPRQ1 part is unused and in its original packaging.
Return procedure for TPS92692QPWPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS92692QPWPRQ1 Tags
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BCR402RE6327HTSA1
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BCR430UXTSA2
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BCR420UE6433HTMA1
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BCR421UE6327HTSA1
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LYT1604D-TL
Power Integrations
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HV9910CLG-G
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CL2N8-G
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BCR420UW6-7
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BCR421UW6-7
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BCR420UFD-7
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