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Texas Instruments TPS92601BQPWPRQ1
- Part No.:
- TPS92601BQPWPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS92601BQPWPRQ1.pdf
- Description:
- IC LED DRVR CTRLR PWM 20HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,999
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Product details
Overview
TPS92601BQPWPRQ1 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), 150-mV high-side current-sense threshold, 2.2-V ±5% internal voltage reference, and integrated 0.7-A low-side NMOS gate driver. It operates across 4 V–40 V input and supports up to 75 V output in boost, SEPIC, or flyback topologies.
For engineers reviewing the TPS92601BQPWPRQ1 datasheet, TPS92601BQPWPRQ1 pinout, TPS92601BQPWPRQ1 application, or TPS92601BQPWPRQ1 equivalent, this device is selected for AEC-Q100 Grade 1 automotive front lighting systems requiring precise LED current control, diagnostic feedback via analog DIAG output, PWM/analog dimming support, and robust fault protection including open-LED, short-to-GND, and overvoltage detection.
Technical Context
The TPS92601BQPWPRQ1 integrates a fixed-frequency current-mode PWM controller with internal slope compensation to prevent subharmonic oscillation across its full duty-cycle range. Its dual-loop architecture enables independent configuration of current-regulation (via ISP1/ISN1 shunt sensing) and voltage-regulation (via OVFB1 resistor divider), with automatic fallback to the inactive loop during fault conditions-e.g., voltage loop limiting output during open-LED events.
It features synchronized 100 kHz–600 kHz switching via external RT resistor or external clock signal, integrated 6.6-V VCC LDO with 80-mA sourcing capability, and two dedicated gate drivers: a 0.7-A low-side NMOS driver (GDRV1) for boost FET control and a high-side PMOS driver (PWMO1) for PWM dimming and short-circuit cutoff. Diagnostics include analog current tracking on DIAG1 (0.2–2.85 V range) and digital fault flags for open/short LED detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4 V–40 V - supports cold-crank (4 V) and battery transients up to 45 V absolute max. |
| Output Voltage Range | 4 V–75 V - enables multi-LED string driving in boost-to-battery or SEPIC configurations. |
| Current Sense Threshold | 150 mV - fixed high-side sense voltage with ±6-mV offset enabling ~4% LED current accuracy. |
| Internal Reference | 2.2 V ±5% - precision voltage reference for OVFB1 feedback loop and overvoltage protection. |
| Switching Frequency | 100–600 kHz - adjustable via RT pin resistor or external sync clock; reduces EMI and magnetics size. |
| Gate Drive Capability | 0.7-A peak low-side NMOS drive (GDRV1) - directly drives external boost FETs without external buffers. |
| Diagnostic Output | Analog DIAG1 (0.2–2.85 V) - linearly tracks LED current for real-time monitoring and closed-loop control. |
Pinout & Package
TPS92601BQPWPRQ1 is housed in a 20-pin HTSSOP package (PWP) with exposed thermal pad, optimized for automotive thermal cycling and board-level reliability. The thermal pad must be soldered to PGND for effective heat dissipation.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 ICTRL1 | Analog dimming input | 0–1.5 V control voltage sets LED current via 10× scaling factor; pulldown resistance 1 MΩ ensures default-off safety. |
| 2 COMP1 | Compensation node | Connects external RC network to stabilize current/voltage control loop; output swings 0–3.3 V. |
| 3 OVFB1 | Voltage feedback input | Resistor-divider from VOUT1 sets 2.2-V reference point; triggers overvoltage shutdown if exceeded. |
| 4 RT | Oscillator timing/sync | Resistor to ground sets 100–600 kHz frequency; accepts external square wave for system clock synchronization. |
| 5 DIAG1 | Diagnostic output | Analog voltage (0.2–2.85 V) proportional to LED current; also asserts low/high for open/short LED faults. |
| 6 GND | Analog ground | Reference for internal error amplifiers and bias circuits; separate from power grounds (PGND1). |
| 7 PWMIN1 | PWM enable/dimming input | Logic-high (>2 V) enables channel; 0.2–2 kHz PWM toggles PWMO1 for LED dimming or cutoff. |
| 8 VIN | Main supply input | 4–40 V input powering internal LDO (VCC) and logic; includes UVLO (4 V) and OVSH (40.7 V) protection. |
| 9–10 NC | No connection | Unbonded pins; must remain unconnected per TI design guidelines. |
| 11–12 NC | No connection | Unbonded pins; must remain unconnected per TI design guidelines. |
| 13 VCC | Gate-drive supply | Internally regulated 6.6 V ±0.9 V output; requires 2.2–20 µF ceramic decoupling capacitor. |
| 14 GDRV1 | Low-side NMOS gate driver | 0.7-A peak source/sink output drives external boost FET gate; rise/fall times <25 ns. |
| 15 ISNS1 | Boost FET current limit sense | Monitors external shunt for 100-mV overcurrent threshold; includes 200-ns leading-edge blanking. |
| 16 PGND1 | Power ground (channel 1) | Return path for high-current boost loop; separate from analog GND to minimize noise coupling. |
| 17 ISP1 | Current-sense positive input | High-side shunt connection point; common-mode range 4–74 V enables direct LED-string sensing. |
| 18 ISN1 | Current-sense negative input | Completes high-side current sense path; differential input with ±6-mV offset and 100-µA bias current. |
| 19 VOUT1 | Boost output voltage sense | Connects to boost converter output node; used for voltage regulation and open-LED detection. |
| 20 PWMO1 | High-side PMOS dimming driver | Drives external PMOS for PWM dimming or fast LED cutoff during short-to-GND faults. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Rated for –40°C to +125°C ambient operation with HBM ±2 kV and CDM ±500 V ESD robustness. |
| Dual regulation loops | Independent current- and voltage-feedback paths allow fail-safe operation: voltage loop limits output during open-LED, current loop limits during short. |
| Integrated diagnostics | Single-pin DIAG1 provides analog LED current tracking plus digital open/short LED status without external circuitry. |
| Flexible dimming interface | Supports both 0.2–2 kHz PWM (via PWMIN1) and 0–1.5 V analog dimming (via ICTRL1) with seamless interoperability. |
| Robust protection suite | Includes undervoltage lockout (4 V), overvoltage shutdown (40.7 V), thermal shutdown (165°C), and shorted-output protection. |
Applications
| Automotive Adaptive Front Lighting System (AFS) | Daytime Running Light (DRL) Module |
|---|---|
|
Use Scenario: Dynamic beam shaping using multiple independently controlled LED strings in headlamp assemblies. IC Role / Device Role / Timing Role: Single-channel constant-current regulator managing one LED string with real-time current feedback and fault reporting. Use Value: Enables precise luminance control across temperature and battery voltage variations while meeting ASIL-B functional safety requirements via diagnostic coverage. |
Use Scenario: High-efficiency, thermally stable DRL module operating continuously at partial brightness. IC Role / Device Role / Timing Role: Primary LED current controller with analog dimming (ICTRL1) and PWM dimming (PWMIN1) for brightness modulation. Use Value: Delivers >90% efficiency at 12 V input and 40 V output, reducing thermal load and enabling compact PCB layout in space-constrained modules. |
| LED Fog Lamp Driver | Automotive Turn Signal Flasher |
|
Use Scenario: High-output fog lamp requiring overvoltage tolerance during load-dump events (up to 45 V). IC Role / Device Role / Timing Role: Boost controller regulating LED current despite wide input variation (6–26 V cranking profile). Use Value: Maintains stable 500-mA LED current with <±4% accuracy across –40°C to +125°C, eliminating flicker during engine start. |
Use Scenario: Fast-response turn signal with programmable flash rate and brightness ramping. IC Role / Device Role / Timing Role: Constant-current driver with synchronized PWM dimming (via external MCU) and DIAG1-based current monitoring. Use Value: Supports 2–20 Hz flash rates via RT pin sync and provides real-time current telemetry for adaptive brightness control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS92601QPWPRQ1 | Same 20-pin HTSSOP package and pinout; uses 150-mV sense threshold but lacks EEPROM-configurable sense option. | Identical functionality for standard automotive LED headlight use; no diagnostic flexibility for custom calibration. | Select TPS92601QPWPRQ1 when EEPROM programming is unnecessary and cost optimization is prioritized. |
| TPS92602BQPWPRQ1 | Dual-channel version in 28-pin HTSSOP; shares identical per-channel specs, diagnostics, and protection features. | Enables two independent LED strings (e.g., low-beam + high-beam) on single IC; increases channel count without doubling footprint. | Choose TPS92602BQPWPRQ1 when system architecture requires dual independent outputs with shared thermal management. |
Compared with TPS92601BQPWPRQ1, the TPS92601QPWPRQ1 offers identical performance without EEPROM configurability, while the TPS92602BQPWPRQ1 delivers dual-channel capability in a larger package-both require no PCB redesign but differ in channel count, memory features, and BOM cost.
Availability
TPS92601BQPWPRQ1 is available at Aetrix Electronics and suitable for automotive headlight modules, daytime running light (DRL) systems, and adaptive front lighting requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for TPS92601BQPWPRQ1 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 and embedded processing technologies, with deep expertise in automotive-grade power management and LED driver solutions.
The TPS9260x-Q1 product line was engineered specifically for AEC-Q100-compliant automotive front lighting, delivering high-side current sensing, dual-loop regulation, and integrated diagnostics to meet stringent safety and reliability requirements.
FAQ
What is the maximum output voltage supported by the TPS92601BQPWPRQ1?
The TPS92601BQPWPRQ1 supports an output voltage range of 4 V to 75 V, with an absolute maximum rating of 80 V. This enables reliable operation in boost, SEPIC, and flyback topologies driving multi-LED strings typical in automotive headlights. The device includes overvoltage shutdown at 40.7 V on VIN and monitors VOUT1 via OVFB1 against the 2.2-V internal reference to enforce safe regulation limits.
How does the TPS92601BQPWPRQ1 implement LED current accuracy and sensing?
The TPS92601BQPWPRQ1 achieves ±4% LED current accuracy using a high-side current-sense architecture with 150-mV nominal threshold across the ISP1/ISN1 inputs and ±6-mV offset voltage. It employs a dedicated current-sense amplifier with 5-V/V gain and common-mode range of 4 V–74 V, allowing direct placement on the LED-string high side. The ICTRL1 pin provides analog dimming control with 10× scaling, and DIAG1 outputs a proportional analog voltage (0.2–2.85 V) for closed-loop verification.
Can the TPS92601BQPWPRQ1 be synchronized to an external clock?
Yes, the TPS92601BQPWPRQ1 supports external clock synchronization via the RT pin. Applying a square wave with 100–600 kHz frequency, transitions below 0.8 V and above 2 V, and minimum pulse width of 70 ns synchronizes the internal oscillator to the external source. This feature enables EMI reduction through spread-spectrum alignment and coordinated switching in multi-channel systems without requiring additional timing ICs.
What protection features are integrated into the TPS92601BQPWPRQ1?
The TPS92601BQPWPRQ1 integrates comprehensive protection: undervoltage lockout (UVLO at 4 V), overvoltage shutdown (OVSH at 40.7 V), thermal shutdown (165°C with 20°C hysteresis), open-LED and short-to-GND detection (reported via DIAG1), shorted-output protection, and leading-edge blanking (200 ns) on ISNS1. These features eliminate need for external fault-handling circuitry and ensure compliance with ISO 16750-2 automotive electrical stress requirements.
Is the TPS92601BQPWPRQ1 pin-compatible with other devices in the TPS9260x-Q1 family?
The TPS92601BQPWPRQ1 shares identical 20-pin HTSSOP (PWP) packaging and pinout with TPS92601QPWPRQ1 and TPS92601AQPWPRQ1, enabling drop-in replacement where sense-voltage and EEPROM requirements align. However, it is not pin-compatible with dual-channel variants like TPS92602BQPWPRQ1 (28-pin), which has different pin assignments and additional channel-specific signals. Always verify sense-threshold selection and EEPROM configuration before substitution.
TPS92601BQPWPRQ1 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:
- 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:
- 1.5A
- Frequency:
- 100kHz ~ 600kHz
- Dimming:
- Analog, PWM
- Applications:
- Lighting
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-HTSSOP
TPS92601BQPWPRQ1 FAQ
1.How can I place an order for TPS92601BQPWPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS92601BQPWPRQ1 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 TPS92601BQPWPRQ1 reliable?
The price and inventory of TPS92601BQPWPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS92601BQPWPRQ1 is usually 5 days.
3.What payment methods are accepted for TPS92601BQPWPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS92601BQPWPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS92601BQPWPRQ1?
TPS92601BQPWPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS92601BQPWPRQ1 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 TPS92601BQPWPRQ1?
For technical support, including TPS92601BQPWPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS92601BQPWPRQ1 requirements.
6.How does Aetrix verify that TPS92601BQPWPRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS92601BQPWPRQ1 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 TPS92601BQPWPRQ1 meets industry standards.
7.What is the process for return or replacement of TPS92601BQPWPRQ1?
All TPS92601BQPWPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS92601BQPWPRQ1, 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 TPS92601BQPWPRQ1 part is unused and in its original packaging.
Return procedure for TPS92601BQPWPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS92601BQPWPRQ1 Tags
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