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Texas Instruments TPS92601QPWPRQ1
- Part No.:
- TPS92601QPWPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS92601QPWPRQ1.pdf
- Description:
- IC LED DRIVER CTRLR PWM 20HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,515
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Product details
Overview
TPS92601QPWPRQ1 from Texas Instruments is a single-channel automotive-grade LED driver IC designed for high-brightness headlight applications. It implements a peak-current-mode boost controller with dual regulation loops (constant-current and constant-voltage), 4 V–40 V input range, 4 V–75 V output capability, and integrated low-side NMOS gate driver delivering 0.7 A peak current. It operates in automotive front lighting systems requiring AEC-Q100 Grade 1 compliance (–40°C to 125°C ambient).
For engineers reviewing the TPS92601QPWPRQ1 datasheet, TPS92601QPWPRQ1 pinout, TPS92601QPWPRQ1 application, or TPS92601QPWPRQ1 equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive diagnostics (open/short-LED detection), exact sense-voltage accuracy (±6 mV offset), and real-world dimming interface behavior (PWM + analog via ICTRL1) - all specific to the TPS92601QPWPRQ1 variant.
Technical Context
The TPS92601QPWPRQ1 integrates a fixed-frequency peak-current-mode boost controller with internal slope compensation to prevent subharmonic oscillation across its full duty-cycle range. Its dual-loop architecture uses a high-side current-sense amplifier (150-mV full-scale, ±6-mV offset) for LED current regulation and an internal 2.2-V reference with external resistor divider on OVFB1 for voltage regulation.
It supports PWM dimming (0.2–2 kHz) and analog dimming via ICTRL1 (0–1.5 V linear range), with diagnostic feedback provided on DIAG1 as analog-represented LED current (0.2–2.85 V) plus open-LED (10 mV threshold) and short-to-GND (225 mV threshold) flags. The RT pin enables frequency setting (100–600 kHz) or external synchronization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4 V–40 V - supports full automotive battery range including cold-crank (4 V) and load-dump transients (45 V abs. max). |
| Output Voltage Capability | 4 V–75 V - enables driving long LED strings (e.g., 8× white LEDs @ 3.2 V) in boost or boost-to-battery topologies. |
| Current Sense Accuracy | ±6 mV offset - achieves ~4% LED current accuracy at 150-mV sense voltage, critical for consistent headlight luminance. |
| Switching Frequency Range | 100–600 kHz - adjustable via RT pin resistor; higher frequencies reduce inductor size but increase switching losses. |
| Gate Drive Capability | 0.7 A peak sink/source - directly drives external low-side NMOS boost FETs without external buffer stages. |
| Diagnostic Outputs | Open-LED (10 mV), Short-to-GND (225 mV), and analog LED current tracking (0.2–2.85 V on DIAG1) - enables ASIL-B–compatible fault reporting. |
| AEC-Q100 Qualification | Grade 1 (–40°C to 125°C ambient), HBM ±2 kV, CDM ±500 V - certified for under-hood automotive headlight control. |
Pinout & Package
TPS92601QPWPRQ1 is housed in a 20-pin HTSSOP package (PWP) with exposed thermal pad, optimized for automotive thermal management and PCB space constraints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ICTRL1 | Analog dimming input | 0–1.5 V control voltage sets LED current linearly (10%–100% range); internal 1-MΩ pulldown ensures safe default. |
| COMP1 | Compensation node | Connects external RC network to stabilize current/voltage loop; output swings 0–3.3 V during regulation. |
| DIAG1 | Diagnostic output | Three-state analog output: low (≤0.15 V) = open LED, high (≥3 V) = shorted LED, mid-range (0.2–2.85 V) = proportional LED current. |
| GDRV1 | Low-side NMOS gate driver | 0.7 A peak drive signal controls external boost FET; rise/fall times <22 ns / 8.5 ns ensure fast switching. |
| ISN1 / ISP1 | High-side current sense inputs | Differential pair referenced to VOUT1; accepts 150-mV full-scale shunt drop with ±6-mV offset for precision LED current sensing. |
| OVFB1 | Voltage feedback input | Connects to resistor divider from VOUT1; compares against internal 2.2 V ±5% reference to enforce overvoltage protection. |
| PWMO1 | High-side PMOS dimming driver | Drives external PMOS for PWM dimming; supports 150 mA source / 10 mA sink into LED string cathode. |
| RT | Oscillator/sync input | Resistor-to-ground sets switching frequency (100–600 kHz); square-wave input synchronizes to system clock. |
| VIN | Main supply input | Accepts 4–40 V automotive battery; internal LDO generates VCC (5.5–7.4 V) for gate drivers and logic. |
| VOUT1 | Boost output connection | High-voltage node (up to 75 V) tied to boost inductor and LED string anode; used for voltage feedback and current sense common-mode reference. |
Key Features
| Feature | Design Value |
|---|---|
| Dual regulation loops | Independent current- and voltage-feedback paths enable fail-safe operation: current loop regulates LED brightness; voltage loop clamps output during open-LED faults. |
| Integrated slope compensation | Prevents subharmonic oscillation across 0–93.8% duty cycle, ensuring stable operation in boost, SEPIC, and flyback topologies without external components. |
| Automotive diagnostics | Hardware-level open-LED (10 mV), short-to-GND (225 mV), and analog current tracking (0.2–2.85 V) on single DIAG1 pin simplify ASIL-B fault reporting. |
| Flexible dimming interface | Simultaneous support for PWM dimming (0.2–2 kHz) and analog dimming (0–1.5 V on ICTRL1) enables seamless integration with MCU or body-control modules. |
| Thermal robustness | Junction-to-ambient thermal resistance of 37 °C/W (HTSSOP-20) allows >1 W dissipation at 125°C ambient with standard PCB copper area. |
Applications
| Automotive Adaptive Front Lighting System (AFS) | LED Daytime Running Light (DRL) |
|---|---|
Use Scenario: Dynamic beam shaping using multiple independently controlled LED zones in response to steering angle and vehicle speed. IC Role / Device Role / Timing Role: Single-channel TPS92601QPWPRQ1 drives one LED zone with precise current regulation and real-time diagnostic feedback. Use Value: Enables ASIL-B–compliant zone-level brightness control and fault isolation without additional monitoring circuitry. |
Use Scenario: High-reliability, always-on LED illumination meeting ECE R87 photometric requirements. IC Role / Device Role / Timing Role: TPS92601QPWPRQ1 provides constant-current drive with UVLO/OVLO protection and thermal shutdown. Use Value: Eliminates need for external current-sense amplifiers and voltage references, reducing BOM count by ≥3 components per channel. |
| Automotive Matrix Headlight Module | Commercial Vehicle LED Headlamp |
Use Scenario: Pixelated headlight with 24+ individually addressable LEDs per side, requiring independent current control and fault reporting. IC Role / Device Role / Timing Role: TPS92601QPWPRQ1 serves as one channel in multi-IC array; DIAG1 output feeds microcontroller for pixel-level fault mapping. Use Value: Analog current tracking on DIAG1 enables closed-loop luminance calibration without adding ADC channels to host MCU. |
Use Scenario: Heavy-duty truck headlamp operating in wide temperature (-40°C to 85°C) and high-vibration environments. IC Role / Device Role / Timing Role: TPS92601QPWPRQ1 delivers robust boost conversion with AEC-Q100 Grade 1 qualification and 45 V abs. max input tolerance. Use Value: Withstands ISO 7637-2 pulse 5a (load dump up to 60 V) when paired with TVS, reducing system-level surge protection cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS92601BQPWPRQ1 | Same pinout and function; factory-programmed for 150-mV sense voltage (vs. EEPROM-configurable TPS92601QPWPRQ1). | No field reconfiguration of sense voltage; fixed 4% LED current accuracy vs. configurable 2%/4% trade-off. | Select TPS92601BQPWPRQ1 for production simplicity where 150-mV sense is sufficient and EEPROM programming is unnecessary. |
| LM3423QMH/NOPB | Single-channel automotive LED controller; 6–75 V input, no integrated gate drivers - requires external high-side NMOS driver. | Lacks integrated PWM dimming PMOS driver and analog current tracking on DIAG pin; needs external op-amp for current monitoring. | Choose LM3423QMH/NOPB only if system already includes discrete high-side drivers and separate diagnostic circuitry, accepting higher design complexity. |
Compared with TPS92601QPWPRQ1, TPS92601BQPWPRQ1 offers identical functionality with factory-fixed sense voltage, while LM3423QMH/NOPB requires external drivers and lacks integrated diagnostics - making TPS92601QPWPRQ1 the optimal choice for compact, self-contained automotive headlight designs.
Availability
TPS92601QPWPRQ1 is available at Aetrix Electronics and suitable for automotive headlight systems, adaptive front lighting (AFS), and commercial vehicle LED lamp designs requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.
Supply support for TPS92601QPWPRQ1 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 safety-critical power management solutions.
The TPS9260x-Q1 product line was engineered specifically for automotive front lighting, delivering integrated boost control, diagnostics, and dimming interfaces to replace multi-chip discrete LED driver solutions in headlamp ECUs.
FAQ
What is the maximum output voltage supported by the TPS92601QPWPRQ1?
The TPS92601QPWPRQ1 supports an output voltage range of 4 V to 75 V, with an absolute maximum rating of 80 V. This enables driving high-voltage LED strings in boost or boost-to-battery configurations typical in automotive headlamps. Operation above 75 V risks violating recommended conditions and may trigger overvoltage protection.
Does the TPS92601QPWPRQ1 support both PWM and analog dimming simultaneously?
No - the TPS92601QPWPRQ1 supports either PWM dimming (via PWMIN1) or analog dimming (via ICTRL1), but not both simultaneously. When PWMIN1 is active, analog dimming is disabled; when PWMIN1 is held high or low, ICTRL1 controls LED current linearly from 10% to 100%. The device does not mix the two methods in real time.
What is the purpose of the DIAG1 pin on the TPS92601QPWPRQ1?
The DIAG1 pin on the TPS92601QPWPRQ1 provides three diagnostic functions in one analog output: low voltage (≤0.15 V) indicates open-LED fault, high voltage (≥3 V) indicates short-to-GND fault, and mid-range voltage (0.2–2.85 V) linearly tracks LED current for closed-loop calibration. This eliminates need for external comparators or ADC channels.
Can the TPS92601QPWPRQ1 be synchronized to an external clock?
Yes - the RT pin of the TPS92601QPWPRQ1 accepts an external square-wave clock between 100 kHz and 600 kHz. The signal must swing below 0.8 V (low) and above 2 V (high), with minimum pulse width of 70 ns. This enables phase alignment across multiple TPS92601QPWPRQ1 devices to reduce EMI in multi-channel headlamp systems.
What is the sense voltage range and accuracy of the TPS92601QPWPRQ1's high-side current monitor?
The TPS92601QPWPRQ1 uses a 150-mV full-scale differential sense voltage (ISP1–ISN1) with ±6-mV input offset, achieving approximately 4% LED current accuracy. This setting is factory-configured for the Q1 variant; alternative versions (e.g., TPS92601A-Q1) support 300-mV range with ±6-mV offset for improved accuracy at lower currents.
TPS92601QPWPRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-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:
- PWM
- Applications:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-HTSSOP
TPS92601QPWPRQ1 FAQ
1.How can I place an order for TPS92601QPWPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS92601QPWPRQ1 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 TPS92601QPWPRQ1 reliable?
The price and inventory of TPS92601QPWPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS92601QPWPRQ1 is usually 5 days.
3.What payment methods are accepted for TPS92601QPWPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS92601QPWPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS92601QPWPRQ1?
TPS92601QPWPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS92601QPWPRQ1 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 TPS92601QPWPRQ1?
For technical support, including TPS92601QPWPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS92601QPWPRQ1 requirements.
6.How does Aetrix verify that TPS92601QPWPRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS92601QPWPRQ1 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 TPS92601QPWPRQ1 meets industry standards.
7.What is the process for return or replacement of TPS92601QPWPRQ1?
All TPS92601QPWPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS92601QPWPRQ1, 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 TPS92601QPWPRQ1 part is unused and in its original packaging.
Return procedure for TPS92601QPWPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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