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Texas Instruments TPS92690Q1PWP/NOPB
- Part No.:
- TPS92690Q1PWP/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 16-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS92690Q1PWP/NOPB.pdf
- Description:
- IC LED DRIVER CTRLR PWM 16HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,769
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Product details
Overview
TPS92690Q1PWP/NOPB from Texas Instruments is an automotive-grade multi-topology LED current regulator for exterior lighting, supporting buck, boost, and buck-boost configurations with 4.5 V to 65 V input, up to 65 V output, and programmable constant-current regulation up to 1.5 A. It integrates spread-spectrum EMI reduction, analog/PWM dimming, and comprehensive fault handling (open/short LED, overtemperature, overvoltage) for headlamp and taillamp modules.
For engineers reviewing the TPS92690Q1PWP/NOPB datasheet, TPS92690Q1PWP/NOPB pinout, TPS92690Q1PWP/NOPB application, or TPS92690Q1PWP/NOPB equivalent, key selection criteria include topology flexibility under battery transients (cold crank/load dump), diagnostic coverage for ASIL-B–aligned systems, current accuracy (±3%), and thermal foldback behavior in constrained rear-light housings.
Technical Context
The TPS92690Q1PWP/NOPB operates as a controller-only IC-no internal power switch-enabling external MOSFET selection for optimized efficiency and thermal management across varying LED string voltages. Its rail-to-rail current sense amplifier supports accurate regulation down to 2.5 V output while maintaining stability during wide-input transients (4.5 V–65 V).
It implements a current-mode control architecture with adjustable switching frequency (100 kHz–2.2 MHz), integrated spread-spectrum modulation to reduce peak EMI, and configurable fault response (latch-off or auto-retry) for compliance with ISO 16750-2 and AEC-Q100 Grade 1 requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology Support | Buck, boost, buck-boost - enables single-chip solution across diverse LED string voltages in front/rear lighting |
| Input Voltage Range | 4.5 V to 65 V - withstands cold-crank (4.5 V) and load-dump (65 V) without external protection |
| Output Current Accuracy | ±3% over temperature and line - ensures consistent luminance across vehicle lifetime and ambient conditions |
| Switching Frequency | 100 kHz to 2.2 MHz - allows optimization for EMI vs. efficiency and enables small external magnetics |
| Current Sense Range | Rail-to-rail (0 V to VIN) - supports low-dropout operation and accurate sensing at low LED forward voltages |
| Fault Protection | Open/short LED, overtemperature, overvoltage - reduces need for external monitoring circuitry in ASIL-B designs |
Pinout & Package
TPS92690Q1PWP/NOPB is housed in a thermally enhanced 20-pin HTSSOP package (PWP) with exposed thermal pad for PCB-level heat dissipation in high-power lighting modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input supply | Accepts 4.5 V–65 V unregulated battery input; connects to bulk capacitor and ESD protection |
| SW | Switch node | Drives external high-side/low-side MOSFETs; requires careful layout to minimize EMI and ringing |
| ISEN | Current sense input | High-precision differential input for shunt-based LED current measurement; rail-to-rail capable |
| COMP | Error amplifier output | Connects to external compensation network for loop stability across topologies and loads |
| EN | Enable control | Active-high logic input; supports PWM dimming synchronization and system-level power sequencing |
| FAULT | Open-drain fault indicator | Signals open/short LED, overtemp, or OV faults to microcontroller or BCM via pull-up resistor |
Key Features
| Feature | Design Value |
|---|---|
| Multi-topology configuration | Single IC supports buck, boost, and buck-boost via external component selection-reduces BOM count across lighting variants |
| Spread-spectrum frequency modulation | Reduces conducted and radiated EMI peaks by >10 dB, easing CISPR 25 Class 5 compliance without added filtering |
| Programmable thermal foldback | Gradually reduces LED current above threshold temperature-preserves light output while preventing thermal runaway |
| Analog + PWM dimming interface | Supports both DC voltage (0–2.5 V) and digital PWM (100 Hz–20 kHz) inputs-enables seamless integration with MCU or LIN bus controllers |
| ASIL-B–ready diagnostics | On-chip comparators and latched fault reporting meet functional safety requirements for exterior lighting per ISO 26262 |
Applications
| Adaptive Front Headlamp System (AFS) | LED Daytime Running Light (DRL) |
|---|---|
Use Scenario: Dynamic beam shaping using multiple independently controlled LED strings driven by camera-based vehicle detection. IC Role / Device Role / Timing Role: Primary current regulator controlling individual LED zones in conjunction with TPS92662-Q1 matrix manager. Use Value: Enables precise current matching (<±3%) across zones for uniform photometric output and smooth transitions during adaptive beam sweeps. | Use Scenario: High-brightness, always-on lighting module mounted on front fascia requiring stable luminance across battery voltage swings. IC Role / Device Role / Timing Role: Buck-mode constant-current driver powering 6–10 series white LEDs from 12 V nominal battery. Use Value: Maintains ±3% current accuracy from 9 V (cold crank) to 16 V (charging), eliminating visible brightness variation during engine start. |
| Rear Combination Lamp (Stop/Turn/Backup) | Side-Marker and Welcome Lighting |
Use Scenario: Integrated rear lamp housing combining brake, turn, and reverse functions with shared thermal envelope and EMC constraints. IC Role / Device Role / Timing Role: Boost-mode regulator driving high-Vf red/amber LED strings when battery voltage drops below LED string voltage. Use Value: Delivers full 1.5 A brake-light current even at 9 V input, ensuring regulatory-compliant luminance during low-voltage conditions. | Use Scenario: Stylistic accent lighting activated upon door handle approach or key fob detection in ambient lighting modules. IC Role / Device Role / Timing Role: Buck-boost regulator powering mixed-color (white/amber) LED strings from variable 12 V–14.5 V supply. Use Value: Eliminates need for separate regulators per color channel-supports seamless RGBW blending with single TPS92690Q1PWP/NOPB per zone. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-topology LED current regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS92691-Q1 | No spread-spectrum EMI reduction; rail-to-rail current sense only in boost/buck-boost modes | Lacks CISPR 25 Class 5 EMI margin in high-density layouts; suitable where external filtering is acceptable | Select when EMI budget allows added filter components and cost sensitivity outweighs layout simplification |
| TPS92692-Q1 | Includes integrated spread spectrum and adjustable reference; identical pinout and topology support | Offers higher default current accuracy (±2.5%) and extended fault logging via I²C-compatible interface | Prefer for new designs requiring enhanced diagnostics and tighter luminance tolerance without layout change |
Compared with TPS92690Q1PWP/NOPB, TPS92691-Q1 trades EMI performance for lower cost in less space-constrained modules, while TPS92692-Q1 extends functionality with digital configurability and improved accuracy-both share identical thermal and electrical footprints for drop-in evaluation.
Availability
TPS92690Q1PWP/NOPB is available at Aetrix Electronics and suitable for adaptive front lighting, rear combination lamps, and welcome lighting systems requiring stable component supply, AEC-Q100 qualification, and long-term automotive lifecycle support.
Supply support for TPS92690Q1PWP/NOPB 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 delivering analog, embedded processing, and automotive ICs with emphasis on reliability, efficiency, and system-level integration.
The TPS9269x-Q1 product line was designed specifically for scalable, fault-resilient LED current regulation in automotive exterior lighting-supporting modular headlamp architectures and cost-optimized rear-lamp subsystems.
FAQ
What topology configurations does the TPS92690Q1PWP/NOPB support?
The TPS92690Q1PWP/NOPB supports buck, boost, and buck-boost topologies through external component selection-no internal switch limits its use to specific configurations. This flexibility allows one IC design to serve multiple lighting functions (e.g., DRL in buck mode, brake light in boost mode) while maintaining consistent diagnostic coverage and dimming interface behavior across all modes. The TPS92690Q1PWP/NOPB achieves this via its controller-only architecture and rail-to-rail current sense capability.
Does the TPS92690Q1PWP/NOPB include built-in EMI reduction features?
Yes, the TPS92690Q1PWP/NOPB integrates spread-spectrum frequency modulation to reduce peak radiated and conducted emissions-critical for meeting CISPR 25 Class 5 requirements in automotive lighting modules. Unlike fixed-frequency controllers, its modulated switching frequency disperses energy across a bandwidth, lowering EMI peaks by >10 dB without requiring additional ferrite beads or shielding. This feature is enabled by default and configurable via external resistor.
What fault protections are implemented in the TPS92690Q1PWP/NOPB?
The TPS92690Q1PWP/NOPB provides open-LED, short-LED, overtemperature, and overvoltage fault detection with configurable response (latch-off or auto-retry). Each fault condition triggers the open-drain FAULT pin and disables gate drive to prevent damage. These protections are hardware-based and operate independently of external microcontrollers-ensuring fail-safe behavior required for ASIL-B–compliant exterior lighting per ISO 26262. The TPS92690Q1PWP/NOPB also includes thermal foldback to sustain partial operation during overheating.
Is the TPS92690Q1PWP/NOPB pin-compatible with other devices in the TPS9269x-Q1 family?
Yes, the TPS92690Q1PWP/NOPB shares identical pinout and package (20-pin HTSSOP) with TPS92691-Q1 and TPS92692-Q1, enabling direct substitution during prototyping and qualification. All three devices support the same topology configurations, enable/dim/fault signaling, and thermal pad layout. However, spread-spectrum control and current-sense range differ between variants-so firmware and compensation networks may require validation when swapping TPS92690Q1PWP/NOPB for TPS92691-Q1 or TPS92692-Q1.
What is the maximum output current capability of the TPS92690Q1PWP/NOPB?
The TPS92690Q1PWP/NOPB regulates LED current up to 1.5 A, determined by external sense resistor value and MOSFET selection-not by internal current limit. Its rail-to-rail current sense amplifier maintains ±3% accuracy across the full range, and thermal foldback begins at junction temperatures above 150°C to protect the IC and external FETs. For continuous 1.5 A operation, proper PCB copper area and thermal vias under the PWP package's exposed pad are required per TI's layout guidelines for TPS92690Q1PWP/NOPB.
TPS92690Q1PWP/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- DC DC Controller
- Topology:
- Flyback, SEPIC, Step-Up (Boost)
- Internal Switch(s):
- No
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 4.5V
- Voltage - Supply (Max):
- 75V
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- 350kHz ~ 490kHz
- Dimming:
- PWM
- Applications:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-HTSSOP
TPS92690Q1PWP/NOPB FAQ
1.How can I place an order for TPS92690Q1PWP/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS92690Q1PWP/NOPB 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 TPS92690Q1PWP/NOPB reliable?
The price and inventory of TPS92690Q1PWP/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS92690Q1PWP/NOPB is usually 5 days.
3.What payment methods are accepted for TPS92690Q1PWP/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS92690Q1PWP/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS92690Q1PWP/NOPB?
TPS92690Q1PWP/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS92690Q1PWP/NOPB 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 TPS92690Q1PWP/NOPB?
For technical support, including TPS92690Q1PWP/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS92690Q1PWP/NOPB requirements.
6.How does Aetrix verify that TPS92690Q1PWP/NOPB is sourced from the original manufacturer or authorized distributors?
All TPS92690Q1PWP/NOPB 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 TPS92690Q1PWP/NOPB meets industry standards.
7.What is the process for return or replacement of TPS92690Q1PWP/NOPB?
All TPS92690Q1PWP/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with TPS92690Q1PWP/NOPB, 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 TPS92690Q1PWP/NOPB part is unused and in its original packaging.
Return procedure for TPS92690Q1PWP/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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