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Texas Instruments TPS92602QPWPRQ1
- Part No.:
- TPS92602QPWPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS92602QPWPRQ1.pdf
- Description:
- IC LED DRIVER CTRLR PWM 28HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:103
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Product details
Overview
TPS92602QPWPRQ1 from Texas Instruments is a dual-channel automotive-grade LED driver IC designed for high-brightness headlight systems. It integrates two independent peak-current-mode boost controllers, supports 4 V–40 V input and up to 75 V output, delivers ±6 mV high-side current-sense offset for ≤4% LED current accuracy, and provides PWM + analog dimming with integrated diagnostics. It operates in boost, SEPIC, flyback, or boost-to-battery topologies for front lighting applications.
For engineers reviewing the TPS92602QPWPRQ1 datasheet, TPS92602QPWPRQ1 pinout, TPS92602QPWPRQ1 application, or TPS92602QPWPRQ1 equivalent, key selection criteria include dual-channel synchronous phase-shift operation, 150-mV/300-mV selectable sense voltage (EEPROM-configured), AEC-Q100 Grade 1 qualification (–40°C to 125°C), and integrated NMOS gate driver (0.7 A peak) with PMOS PWM dimming FET control.
Technical Context
The TPS92602QPWPRQ1 implements two independent peak-current-mode boost controllers operating 180° out-of-phase to reduce input/output ripple and EMI. Each channel features dual regulation loops: a high-side current-sense loop (150-mV full-scale, ±6-mV offset) and a voltage-feedback loop referenced to 2.2 V ±5%.
It integrates slope compensation to prevent subharmonic oscillation across duty cycles, supports external RT-resistor–based frequency tuning (100–600 kHz), and enables synchronization to an external clock. Diagnostic outputs include open-LED detection (10 mV threshold), short-to-GND detection (225 mV), and analog LED current tracking on DIAGx pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4 V–40 V - supports cold-crank (4 V) and load-dump (45 V abs max) conditions in automotive battery systems |
| Output Voltage Range | 4 V–75 V - enables driving long LED strings (e.g., 8× high-Vf white LEDs) in boost or SEPIC configurations |
| Current Sense Accuracy | ±6 mV offset - achieves ~4% LED current accuracy at 150-mV sense range, critical for photometric compliance |
| Switching Frequency | 100–600 kHz - adjustable via RT pin resistor; higher frequencies reduce inductor size but increase switching loss |
| Gate Drive Capability | 0.7 A peak NMOS sink/source - drives external boost FETs with low RDS(on) and fast edge rates (tr/tf < 25 ns) |
| Diagnostic Outputs | Analog current tracking + digital fault flags - DIAGx provides real-time LED current (0.2–2.85 V) and open/short status without external ADC |
| Ambient Temp Range | –40°C to 125°C - qualified per AEC-Q100 Grade 1 for under-hood automotive headlight module placement |
Pinout & Package
TPS92602QPWPRQ1 uses a 28-pin HTSSOP package (PWP) with exposed thermal pad, optimized for high-power LED driver thermal dissipation (RθJA = 37.2°C/W). The thermal pad must be soldered to PGND for safe operation at full load.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ICTRL1 / ICTRL2 | Analog dimming control input | Voltage-controlled current setpoint (0–1.5 V); sets LED current via internal transconductance amplifier (KDIM = 10 V/V) |
| GDRV1 / GDRV2 | Low-side NMOS gate driver output | Drives external boost FET gate; 0.7 A peak drive ensures fast turn-on/turn-off and minimizes conduction loss |
| PWMO1 / PWMO2 | High-side PMOS PWM dimming output | Controls LED string current path; supports 150 mA source / 10 mA sink for precise PWM dimming with <80 ns latency |
| ISP1/ISN1, ISP2/ISN2 | High-side current sense differential inputs | Measures LED current across external shunt; 150-mV full-scale range enables accurate sensing with minimal power loss |
| OVFB1 / OVFB2 | Voltage feedback input | Monitors output voltage via resistor divider; compares to 2.2 V internal reference to enforce overvoltage protection |
| DIAG1 / DIAG2 | Diagnostic analog/digital output | Provides real-time LED current (0.2–2.85 V) and fault status (open LED = 10 mV, short = 225 mV) |
| RT | Oscillator timing/sync input | Configures switching frequency (100–600 kHz) or accepts external sync clock (100–600 kHz square wave) |
| PGND1 / PGND2 | Power ground return | Separate low-impedance paths for each channel's power stage minimize crosstalk and improve stability |
Key Features
| Feature | Design Value |
|---|---|
| 180° Phase-Shift Dual Control | Reduces input capacitor RMS current by ~30% and lowers conducted EMI vs. in-phase operation |
| Two Independent Regulation Loops | Enables constant-current LED driving while using voltage loop as fail-safe overvoltage clamp (e.g., open-string protection) |
| Integrated Slope Compensation | Maintains stable current-mode control across full duty cycle (0–93.8%), eliminating subharmonic oscillation without external components |
| EEPROM-Selectable Sense Voltage | Supports 150-mV (TPS92602-Q1) or 300-mV (TPS92602A-Q1) full-scale range - optimizes accuracy vs. shunt power loss tradeoff |
| Comprehensive Diagnostics | Real-time analog current monitoring + digital open/short detection eliminates need for external fault-monitoring circuitry |
Applications
| Automotive Adaptive Driving Beam (ADB) | Automotive Matrix LED Headlights |
|---|---|
Use Scenario: Dynamic pixelated beam shaping using individually addressable LED segments controlled by MCU. IC Role / Device Role / Timing Role: Dual-channel constant-current driver delivering precise, synchronized current to two independent LED arrays with phase-shifted switching. Use Value: Enables flicker-free, high-resolution beam patterns with <80 ns PWM response and real-time current feedback for closed-loop brightness calibration. | Use Scenario: High-luminance front lighting with thermal derating and fault tolerance across 20+ LED zones. IC Role / Device Role / Timing Role: Dual-channel LED driver with independent open/short diagnostics and analog current tracking per channel. Use Value: Reduces BOM count by integrating dual drivers, diagnostics, and dimming in one AEC-Q100 qualified package - simplifies ASIL-B system compliance. |
| Commercial Vehicle LED Headlamps | Off-Road & Agricultural Lighting Systems |
Use Scenario: Heavy-duty headlamps operating in wide temperature (-40°C to 125°C) and high-vibration environments. IC Role / Device Role / Timing Role: Robust dual-channel boost controller supporting cranking (4 V) and load-dump (45 V abs max) transients. Use Value: Eliminates need for external UVLO/OVLO circuitry; built-in thermal shutdown (165°C) and hysteresis (20°C) ensure reliable operation under sustained overload. | Use Scenario: High-power auxiliary lighting with variable input (12 V/24 V battery systems) and mechanical shock exposure. IC Role / Device Role / Timing Role: Dual-channel LED driver supporting SEPIC/flyback topologies for wide VIN range and isolation requirements. Use Value: Enables single-platform design across 12 V and 24 V vehicles using same PCB layout - reduces NRE and validation effort. |
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 |
|---|---|---|---|
| TPS92602BQPWPRQ1 | Same pinout and function; EEPROM factory-programmed for 150-mV sense range (vs. blank EEPROM in TPS92602QPWPRQ1) | No functional difference in operation; differs only in factory default configuration | Select TPS92602BQPWPRQ1 if 150-mV sense range is fixed requirement and EEPROM programming is not desired in production |
| MAX20051ATG/V+T | Single-channel, 65-V max output, no phase-shift capability; requires two units for dual-channel use | Lacks integrated diagnostics (no analog current tracking or open/short flag); needs external fault logic | Choose only if lower channel count suffices and cost-per-channel is prioritized over integration and diagnostic depth |
Compared with TPS92602QPWPRQ1, TPS92602BQPWPRQ1 offers identical performance with preconfigured EEPROM, while MAX20051ATG/V+T requires duplication and external support circuitry - making the TPS92602QPWPRQ1 superior for space-constrained, safety-critical dual-channel headlight modules.
Availability
TPS92602QPWPRQ1 is available at Aetrix Electronics and suitable for automotive headlight modules, adaptive driving beam (ADB) systems, and commercial vehicle lighting requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.
Supply support for TPS92602QPWPRQ1 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 ICs, with decades of experience in high-reliability power management solutions.
The TPS9260x-Q1 product line was engineered specifically for automotive front lighting - delivering dual-channel, high-voltage, high-accuracy LED current regulation with integrated diagnostics and AEC-Q100 Grade 1 qualification.
FAQ
What is the maximum output voltage supported by the TPS92602QPWPRQ1?
The TPS92602QPWPRQ1 supports an output voltage range of 4 V to 75 V, with an absolute maximum rating of 80 V. This enables driving high-Vf LED strings in boost or SEPIC topologies typical in automotive headlight applications. The device regulates either constant current or constant voltage depending on feedback configuration, and includes overvoltage protection triggered when VOUT exceeds the programmed limit.
Does the TPS92602QPWPRQ1 support synchronization between its two channels?
Yes, the TPS92602QPWPRQ1 operates its two channels 180° out-of-phase by default to reduce input/output ripple and EMI. The RT pin also supports external clock synchronization (100–600 kHz), allowing both channels to lock to a common system clock - essential for noise-sensitive ADAS-integrated lighting systems.
How does the TPS92602QPWPRQ1 implement LED current sensing and accuracy?
The TPS92602QPWPRQ1 uses high-side current sensing via ISPx/ISNx differential inputs with a 150-mV full-scale range (configurable to 300 mV via EEPROM). Its ±6-mV input offset enables ~4% LED current accuracy. The internal transconductance amplifier converts the sensed voltage into a regulated current, feeding the error amplifier that controls COMPx and ultimately the boost FET duty cycle.
What diagnostic functions are provided by the DIAG1 and DIAG2 pins on the TPS92602QPWPRQ1?
The DIAG1 and DIAG2 pins on the TPS92602QPWPRQ1 provide dual-mode output: analog voltage (0.2–2.85 V) proportional to LED current for real-time monitoring, and digital fault signaling - pulled low for open-LED (≤10 mV) or high for short-to-GND (≥3 V). This eliminates need for external comparators or ADCs in safety-critical lighting designs.
Can the TPS92602QPWPRQ1 operate in SEPIC or flyback topology, and what are the requirements?
Yes, the TPS92602QPWPRQ1 supports SEPIC and flyback topologies per channel. For startup, two extra diodes per channel are required because the high-side current-sense amplifier's minimum common-mode voltage is 4 V. External component selection (inductor, capacitor, diode ratings) must accommodate the 75 V max output and 40 V max input specifications.
TPS92602QPWPRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Type:
- DC DC Controller
- Topology:
- Flyback, SEPIC, Step-Up (Boost)
- Internal Switch(s):
- No
- Number of Outputs:
- 2
- Voltage - Supply (Min):
- 4V
- Voltage - Supply (Max):
- 40V
- Voltage - Output:
- 4V ~ 75V
- Current - Output / Channel:
- -
- Frequency:
- -
- Dimming:
- Analog, PWM
- Applications:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-HTSSOP
TPS92602QPWPRQ1 FAQ
1.How can I place an order for TPS92602QPWPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS92602QPWPRQ1 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 TPS92602QPWPRQ1 reliable?
The price and inventory of TPS92602QPWPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS92602QPWPRQ1 is usually 5 days.
3.What payment methods are accepted for TPS92602QPWPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS92602QPWPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS92602QPWPRQ1?
TPS92602QPWPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS92602QPWPRQ1 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 TPS92602QPWPRQ1?
For technical support, including TPS92602QPWPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS92602QPWPRQ1 requirements.
6.How does Aetrix verify that TPS92602QPWPRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS92602QPWPRQ1 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 TPS92602QPWPRQ1 meets industry standards.
7.What is the process for return or replacement of TPS92602QPWPRQ1?
All TPS92602QPWPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS92602QPWPRQ1, 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 TPS92602QPWPRQ1 part is unused and in its original packaging.
Return procedure for TPS92602QPWPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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