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Texas Instruments TPS92691QPWPRQ1
- Part No.:
- TPS92691QPWPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 16-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS92691QPWPRQ1.pdf
- Description:
- IC LED DRIVER CTRLR PWM 16HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,357
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Product details
Overview
TPS92691QPWPRQ1 from Texas Instruments is an automotive-grade LED controller IC supporting boost, buck, and buck-boost topologies for constant-current LED string driving. It features 4.5 V to 65 V input voltage range, rail-to-rail current sense amplifier (0 V–60 V common-mode), ±3% LED current accuracy over –40°C to 140°C, and integrated DDRV gate driver for >1000:1 PWM dimming - used in automotive exterior lighting systems requiring high reliability under wide temperature and supply variation.
For engineers reviewing the TPS92691QPWPRQ1 datasheet, TPS92691QPWPRQ1 pinout, TPS92691QPWPRQ1 application, or TPS92691QPWPRQ1 equivalent, key selection considerations include its AEC-Q100 Grade 1 qualification, programmable 80–700 kHz switching frequency, high-side/low-side current sense flexibility, analog dimming via IADJ (140 mV–2.25 V), and comprehensive fault protection including OVP, thermal shutdown, and cycle-by-cycle current limiting.
Technical Context
The TPS92691QPWPRQ1 implements fixed-frequency peak current mode control with programmable slope compensation and soft-start timing. Its rail-to-rail current sense amplifier supports both high-side and low-side shunt configurations, enabling topology-agnostic LED current sensing across 0 V–60 V output voltage range.
It integrates dual gate drivers: GATE for main power switch control and DDRV for external series FET dimming, with independent 500 mA peak source/sink capability. Fault management includes hysteresis-based OVP (1.24 V threshold), VCC UVLO (4.1 V rising), and thermal shutdown at 175°C with 25°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 65 V - supports cold-crank (4.5 V) and load-dump transients in automotive 12 V/24 V systems. |
| LED Current Accuracy | Better than ±3% over –40°C to 140°C junction temperature - enables stable brightness without recalibration across vehicle operating conditions. |
| Switching Frequency | Programmable 80 kHz to 700 kHz via RT resistor - allows EMI optimization and MOSFET loss trade-off in space-constrained headlamp designs. |
| Current Sense Range | 0 V to 60 V common-mode voltage - permits direct sensing in high-side or low-side configurations regardless of LED string voltage. |
| PWM Dimming Ratio | Over 1000:1 with DDRV-driven series FET - achieves deep dimming required for adaptive driving beam (ADB) and DRL modulation. |
| AEC-Q100 Grade | Grade 1 (–40°C to +125°C ambient) - certified for under-hood and exterior lighting applications per automotive reliability standards. |
| Thermal Protection | 175°C shutdown with 25°C hysteresis - prevents thermal runaway during sustained overloads or poor PCB heatsinking. |
Pinout & Package
TPS92691QPWPRQ1 is housed in a 16-pin HTSSOP package (5.10 mm × 6.60 mm) with exposed PowerPAD™ for thermal dissipation. The PowerPAD must be connected to PCB ground plane using multiple vias.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply for internal VCC regulator | Bypassed with 100 nF capacitor; supports up to 65 V input and enables operation during battery crank (4.5 V). |
| SS | Soft-start programming | Capacitor-to-AGND sets startup time; shorting to AGND disables switching - used for system-level sequencing. |
| RT/SYNC | Oscillator frequency programming / synchronization input | Resistor-to-AGND sets fSW (80–700 kHz); AC-coupled external clock synchronizes switching - critical for EMI reduction in multi-channel systems. |
| PWM | PWM dimming control input | Schmitt-trigger input (2.0–2.7 V logic); directly gates GATE and DDRV outputs - enables fast, jitter-free dimming control. |
| COMP | Transconductance error amplifier output | Connects RC network for loop stability; 121 µA/V gain ensures robust closed-loop regulation against LED Vf drift. |
| IADJ | Analog LED current reference input | High-impedance (90 nA bias) input; 0.14–2.25 V range sets LED current threshold with 15:1 linear dimming ratio. |
| IMON | Continuous LED current monitor output | Voltage output = 14 × ILED × RCS; enables real-time open/short detection and cable fault diagnosis without additional circuitry. |
| AGND / PGND | Analog and power ground returns | Must be tied to exposed PowerPAD; separation minimizes noise coupling into current sense path. |
| CSP / CSN | Rail-to-rail current sense amplifier inputs | Differential inputs with <±6 mV offset over temp; support 0–60 V common-mode - eliminates need for level-shifting in high-voltage strings. |
| GATE | Main N-channel MOSFET gate driver output | 500 mA peak drive; low RGH/RGL (5.4 Ω / 4.3 Ω) ensures fast switching and reduced MOSFET conduction losses. |
| DDRV | Series FET dimming gate driver output | Independent 500 mA driver; enables >1000:1 contrast ratio with external N-FET - essential for ADB pixel control. |
| OVP | Hysteretic overvoltage protection input | Resistor divider sets OVP threshold (1.24 V typical); 20 µA hysteresis current defines recovery window - protects LEDs from open-circuit overvoltage. |
| IS | Switch current sense input | Monitors peak switch current for cycle-by-cycle limiting; 525 mV threshold with 150 ns blanking - prevents false triggering from switching spikes. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail current sense amplifier | 0 V–60 V common-mode range with <±6 mV cumulative offset over –40°C to 140°C - enables accurate current sensing in any topology without external amplifiers. |
| Integrated DDRV gate driver | 500 mA peak source/sink with 6.1 Ω high-side resistance - drives external series FET for >1000:1 PWM dimming without added driver IC. |
| Programmable soft-start and slope compensation | Capacitor-controlled SS timing and adjustable slope compensation - prevents subharmonic oscillation and ensures stable operation across wide VIN/VOUT ranges. |
| Comprehensive fault protection | VCC UVLO (4.1 V), OVP (1.24 V), thermal shutdown (175°C), cycle-by-cycle IS limiting, and LED open/short detection via IMON - reduces need for external supervision circuitry. |
| Automotive qualification | AEC-Q100 Grade 1, HTSSOP package with PowerPAD, ±2000 V HBM ESD rating - validated for harsh automotive environments including engine bay and headlamp modules. |
Applications
| Automotive Headlamps | Adaptive Driving Beam (ADB) |
|---|---|
|
Use Scenario: High-brightness LED arrays in projector-based headlamps with dynamic beam shaping. IC Role / Device Role / Timing Role: Constant-current LED controller implementing buck-boost topology with precise current regulation and fast PWM dimming. Use Value: ±3% current accuracy ensures consistent lumen output across temperature; DDRV-driven series FET enables pixel-level dimming for glare-free ADB functionality. |
Use Scenario: Multi-zone LED modules requiring independent on/off and intensity control per segment. IC Role / Device Role / Timing Role: Primary LED driver with IMON-based real-time current monitoring and PWM-synchronized DDRV outputs. Use Value: Over 1000:1 dimming ratio and 54 ns PWM-to-DDRV delay enable microsecond-level zone control; IMON output supports fault logging without MCU intervention. |
| Truck & Bus Exterior Lighting | Commercial Vehicle DRL/Position Lights |
|
Use Scenario: Long LED strings (15–25 LEDs) powered from 24 V truck battery with wide input variation. IC Role / Device Role / Timing Role: Boost-mode LED controller with 4.5 V crank support and 65 V transient tolerance. Use Value: 4.5 V minimum VIN and rail-to-rail CSP/CSN inputs maintain regulation during cold starts; OVP and thermal protection ensure field reliability. |
Use Scenario: Daytime running lights with analog dimming for ambient light adaptation and PWM dimming for signature effects. IC Role / Device Role / Timing Role: Dual-dimming-capable LED controller using IADJ for smooth 15:1 analog adjustment and PWM for strobe/flash patterns. Use Value: High-impedance IADJ input (90 nA bias) allows direct connection to MCU DAC; PWM input accepts standard 100–1000 Hz signals without conditioning. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3409QMHX/NOPB | Fixed 500 kHz fSW, no DDRV output, no IMON, lower VIN max (42 V), no AEC-Q100 grade | Lacks series-FET dimming and real-time current monitoring; suitable only for non-automotive or single-dimming-mode designs | Choose when cost sensitivity outweighs automotive qualification and advanced dimming needs. |
| TPS92682QPWPRQ1 | Single-channel vs TPS92691QPWPRQ1's dual-driver architecture; no DDRV; lower current sense common-mode (40 V); same AEC-Q100 Grade 1 | Designed for simpler buck-only topologies; cannot support >1000:1 PWM dimming or high-side sensing above 40 V | Prefer for cost-optimized, lower-voltage automotive lighting where DDRV and extended common-mode are unnecessary. |
Compared with LM3409QMHX/NOPB and TPS92682QPWPRQ1, the TPS92691QPWPRQ1 uniquely combines AEC-Q100 Grade 1 qualification, 60 V current sense common-mode, integrated DDRV for >1000:1 dimming, and IMON-based fault reporting - making it the only option for high-reliability, multi-topology, adaptive automotive LED systems.
Availability
TPS92691QPWPRQ1 is available at Aetrix Electronics and suitable for automotive exterior lighting, adaptive driving beam modules, and commercial vehicle DRL systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for TPS92691QPWPRQ1 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 TPS92691QPWPRQ1 belongs to TI's automotive LED controller product line, designed specifically for high-reliability, thermally demanding exterior lighting applications requiring AEC-Q100 compliance, wide input/output voltage operation, and flexible dimming architectures.
FAQ
What is the maximum output voltage supported by the TPS92691QPWPRQ1 for LED string driving?
The TPS92691QPWPRQ1 supports a wide output voltage range up to 65 V, with its rail-to-rail current sense amplifier rated for 0 V to 60 V common-mode voltage. This enables reliable operation with LED strings containing up to 20+ white LEDs (typically ~3.2 V each) while maintaining ±3% current accuracy across temperature. The device itself is not limited by output voltage but by the external MOSFET and diode ratings in the chosen topology.
Does the TPS92691QPWPRQ1 support both high-side and low-side current sensing configurations?
Yes, the TPS92691QPWPRQ1 supports both high-side and low-side current sensing thanks to its rail-to-rail current sense amplifier with 0 V to 60 V common-mode input range. The CSP and CSN pins accept differential voltage across the sense resistor regardless of whether it is placed between the LED cathode and ground (low-side) or between VIN and LED anode (high-side), providing topology flexibility for EMI and layout optimization.
How does the DDRV pin on the TPS92691QPWPRQ1 enable >1000:1 PWM dimming?
The DDRV pin on the TPS92691QPWPRQ1 is a dedicated 500 mA gate driver output that controls an external N-channel MOSFET placed in series with the LED string. By modulating DDRV with precise PWM timing (54 ns rise/fall delay), the device achieves >1000:1 contrast ratio - far exceeding what is possible with analog dimming alone. This enables adaptive driving beam (ADB) and other high-fidelity lighting effects requiring deep, flicker-free dimming.
What fault protection features are integrated into the TPS92691QPWPRQ1?
The TPS92691QPWPRQ1 integrates VCC undervoltage lockout (UVLO), output overvoltage protection (OVP), cycle-by-cycle switch current limiting, thermal shutdown (175°C), and LED open/short detection via the IMON output. These features eliminate the need for external supervision circuits in automotive lighting modules and ensure safe operation during battery transients, thermal overload, or wiring faults.
Is the TPS92691QPWPRQ1 pin-compatible with other devices in the TPS926xx-Q1 family?
No, the TPS92691QPWPRQ1 is not pin-compatible with other TPS926xx-Q1 devices such as TPS92682QPWPRQ1 or TPS92633QPWPRQ1. Its 16-pin HTSSOP layout includes unique signal assignments including DDRV, IMON, and dual current sense inputs (CSP/CSN), which differ from variants offering fewer features or different topologies. Board redesign is required when substituting across this family.
TPS92691QPWPRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Controller
- Topology:
- Flyback, SEPIC, 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:
- 65V
- Current - Output / Channel:
- -
- Frequency:
- 80kHz ~ 700kHz
- Dimming:
- Analog, PWM
- Applications:
- Lighting
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-HTSSOP
TPS92691QPWPRQ1 FAQ
1.How can I place an order for TPS92691QPWPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS92691QPWPRQ1 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 TPS92691QPWPRQ1 reliable?
The price and inventory of TPS92691QPWPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS92691QPWPRQ1 is usually 5 days.
3.What payment methods are accepted for TPS92691QPWPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS92691QPWPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS92691QPWPRQ1?
TPS92691QPWPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS92691QPWPRQ1 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 TPS92691QPWPRQ1?
For technical support, including TPS92691QPWPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS92691QPWPRQ1 requirements.
6.How does Aetrix verify that TPS92691QPWPRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS92691QPWPRQ1 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 TPS92691QPWPRQ1 meets industry standards.
7.What is the process for return or replacement of TPS92691QPWPRQ1?
All TPS92691QPWPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS92691QPWPRQ1, 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 TPS92691QPWPRQ1 part is unused and in its original packaging.
Return procedure for TPS92691QPWPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS92691QPWPRQ1 Tags
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HV9910CLG-G
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