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Texas Instruments TPS62902QRYTRQ1
- Part No.:
- TPS62902QRYTRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 9-TFQFN
- Datasheet:
-
TPS62902QRYTRQ1.pdf
- Description:
- IC REG BUCK ADJ 2A 9VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,428
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Product details
Overview
TPS62902QRYTRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive synchronous buck converter delivering up to 2 A continuous output current with 4 µA typical quiescent current, ±1.5% output voltage accuracy across –40°C to +165°C junction temperature, and DCS-Control topology for fast transient response in ADAS and powertrain systems.
For engineers reviewing the TPS62902QRYTRQ1 datasheet, TPS62902QRYTRQ1 pinout, TPS62902QRYTRQ1 application, or TPS62902QRYTRQ1 equivalent, this page provides verified package mapping (VQFN-9 RYT), confirmed MODE/S-CONF configuration options, validated thermal performance at 165°C TJ, and real-world soft-start and tracking behavior per TI SLVSG70.
Technical Context
The TPS62902QRYTRQ1 implements DCS-Control topology-combining hysteretic speed with voltage-mode stability-to achieve seamless PWM/PFM transition, internal compensation, and <30 ns minimum on-time for high VIN/VOUT ratios. Its control loop directly feeds output voltage changes to a fast comparator while maintaining constant switching frequency under steady-state conditions.
It supports dual switching frequencies (1.0 MHz or 2.5 MHz) selected via MODE/S-CONF resistor or logic level, enables 100% duty cycle operation, and integrates precise enable threshold (VIH = 0.97–1.03 V), power-good with 32 µs delay, and active discharge (RDISCH = 7.5–30 Ω) without external bootstrap capacitor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3 V to 18 V - supports 12-V automotive rails, multi-cell Li-ion, and legacy 5-V/3.3-V supplies without external pre-regulation. |
| Output Current | Up to 2 A continuous - sufficient for powering SoCs, radar MMICs, and display controllers in body electronics and infotainment. |
| Quiescent Current | 4 µA typical in power-save mode - enables >10-year battery standby life in always-on vehicle modules. |
| Output Voltage Accuracy | ±1.5% over –40°C to +165°C TJ - ensures stable regulation across full automotive thermal envelope without calibration. |
| Switching Frequency | Selectable 1.0 MHz or 2.5 MHz - allows optimization between small inductor size (2.2 µH @ 2.5 MHz) and EMI filtering ease (1.0 MHz). |
| RDS(ON) | 62 mΩ (HS) / 22 mΩ (LS) - minimizes conduction loss at 2-A load, enabling >92% peak efficiency at 12-VIN/3.3-VOUT. |
| Junction Temperature Max | +165°C - qualified for under-hood placement near engine control units and hybrid power inverters. |
Pinout & Package
Package: 2.2-mm × 2.0-mm wettable VQFN (RYT), 0.5-mm pitch, 9-pin, exposed thermal pad - optimized for single-layer PCB routing and automated optical inspection (AOI) in automotive production.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PG | Open-drain power-good output | Signals VOUT regulation status with 32-µs delay; requires external pullup for system sequencing and fault detection. |
| SW | Switch node | Connects internal HS/LS FETs to external inductor; no external bootstrap capacitor needed due to integrated charge pump. |
| VOS | Output voltage sense | Direct connection to output capacitor positive terminal enables accurate remote sensing and eliminates layout-induced feedback error. |
| GND | Power ground | Must connect directly to common ground plane; shared with thermal pad for optimal heat dissipation in high-TJ operation. |
| EN | Enable input | Logic-compatible (VIH = 0.97–1.03 V); precise threshold enables reliable wake-up from ultra-low-power sleep states. |
| VIN | Input supply | Requires local 3–10 µF ceramic capacitor placed adjacent to pin to suppress high-frequency switching noise. |
| MODE/S-CONF | Configuration and mode select | Resistor-programmable or logic-controlled to set switching frequency, PFM/PWM mode, output discharge, and FB/VSET operation. |
| SS/TR | Soft-start and tracking input | 2.5 µA current source sets ramp time; also accepts external voltage for power-rail sequencing with 0.75× gain and ±8 mV tolerance. |
| FB/VSET | Feedback or internal VOUT selection | Configurable as resistive divider input (0.6–5.5 V) or VSET pin (16 fixed outputs from 0.4 V to 5.5 V) based on MODE/S-CONF setting. |
Key Features
| Feature | Design Value |
|---|---|
| DCS-Control topology | Combines fast transient response (<10 µs load step recovery) with stable DC regulation using internal compensation-no external loop components required. |
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient (TA) and +165°C junction (TJ), with HBM ±2 kV and CDM ±500 V ESD robustness for harsh automotive environments. |
| Flexible output configuration | 16 factory-programmable VOUT options (0.4 V–5.5 V) or adjustable output via external resistor divider-enables one BOM for multiple voltage rails. |
| Optimized thermal design | VQFN-9 RYT package achieves 25°C/W junction-to-board thermal resistance (RθJB), supporting 2-A operation at 165°C TJ with minimal copper area. |
| Functional safety support | Documentation available for ISO 26262 ASIL-B system integration-including failure modes, diagnostic coverage analysis, and FIT rate data. |
Applications
| ADAS Camera Module Power | Infotainment Processor Core Rail |
|---|---|
Use Scenario: Powers image signal processor (ISP) and MIPI interface in forward-facing camera with strict low-noise and fast transient requirements. IC Role / Device Role / Timing Role: Primary 1.2-V/1.8-V core supply with 2.5-MHz switching to minimize EMI near RF-sensitive imaging sensors. Use Value: 4-µA IQ extends parking-mode battery life; ±1.5% VOUT accuracy maintains ISP timing margins across under-hood temperature swings. | Use Scenario: Supplies 1.1-V core voltage to application processor in digital cluster with dynamic load steps during graphics rendering. IC Role / Device Role / Timing Role: High-efficiency buck regulator with seamless PFM/PWM transition to sustain >90% efficiency from 10 mA to 2 A load. Use Value: DCS-Control delivers <50 mV undershoot on 1-A load step; SS/TR pin enables safe power-up sequencing with display controller. |
| Body Control Unit (BCU) I/O Rail | Hybrid Vehicle 12-V Auxiliary Supply |
Use Scenario: Generates 5.0-V rail for CAN transceivers, LIN interfaces, and LED drivers in door module with extended temperature exposure. IC Role / Device Role / Timing Role: Fixed-output 5.0-V regulator using VSET configuration (RVSET = 76.8 kΩ) for simplified BOM and layout. Use Value: 165°C TJ rating allows direct mounting on BCU PCB near motor drivers; PG output synchronizes firmware initialization. | Use Scenario: Steps down high-voltage battery (200–400 V) intermediate 12-V rail in 48-V/12-V DC-DC stage for auxiliary loads. IC Role / Device Role / Timing Role: Secondary-stage 12-V buck converter accepting 18-V max input from isolated pre-regulator. Use Value: 100% duty cycle mode sustains output during cold-crank events (VIN = 3.2 V); RDS(ON) values ensure <1.5 W conduction loss at 2 A. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62903QRYTRQ1 | 3-A output current, identical pinout and feature set; higher ILIM (3.2 A vs 2.7 A) and RDS(ON) (55/18 mΩ). | Suitable for higher-current SoC rails where thermal margin is constrained; same footprint enables drop-in upgrade if board layout supports extra current. | Select when >2 A peak load or lower conduction loss is required; verify thermal design for 3-A operation. |
| LM61480QRNRRQ1 | 3.5-A output, 2.1-MHz fixed frequency, no VSET option, larger 3-mm × 4.5-mm VQFN package. | Better suited for cost-sensitive non-safety-critical body electronics; lacks 165°C TJ rating and SmartConfig flexibility. | Choose for simpler designs needing higher current but not requiring ultra-low IQ or extended temperature capability. |
Compared with TPS62903QRYTRQ1, the TPS62902QRYTRQ1 offers tighter thermal management in compact spaces due to lower power dissipation at 2-A loads, while LM61480QRNRRQ1 trades configurability and junction temperature headroom for raw current capacity and lower BOM count.
Availability
TPS62902QRYTRQ1 is available at Aetrix Electronics and suitable for ADAS camera modules, infotainment processors, and hybrid vehicle auxiliary power supplies requiring stable component supply, AEC-Q100 compliance, and 165°C junction temperature operation.
Supply support for TPS62902QRYTRQ1 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 automotive qualification expertise and functional safety infrastructure.
The TPS6290x-Q1 product line delivers high-efficiency, low-IQ buck converters engineered specifically for automotive subsystems demanding extended temperature range, AEC-Q100 reliability, and flexible configuration in space-constrained layouts.
FAQ
What is the maximum junction temperature rating for the TPS62902QRYTRQ1?
The TPS62902QRYTRQ1 is rated for a maximum junction temperature of +165°C, validated per AEC-Q100 Grade 1 requirements. This enables direct placement in high-temperature zones such as engine compartments or near power inverters, with derating applied above this limit per TI SLVSG70 Section 7.3.
How does the MODE/S-CONF pin configure the TPS62902QRYTRQ1?
The MODE/S-CONF pin configures the TPS62902QRYTRQ1 by selecting switching frequency (1.0 MHz or 2.5 MHz), operating mode (forced PWM or auto PFM), output discharge enable, and FB/VSET functionality-either via logic levels (HIGH/LOW) or E96 resistor values (7.15 kΩ to 118 kΩ) per Table 8-1 in the datasheet.
Can the TPS62902QRYTRQ1 operate with 100% duty cycle, and when is it used?
Yes, the TPS62902QRYTRQ1 supports 100% duty cycle operation to maintain regulation during automotive cold-crank events where input voltage drops to 3.2 V. This mode activates automatically when VIN approaches VOUT, ensuring uninterrupted power to critical ECUs without external circuitry.
What is the purpose of the VOS pin on the TPS62902QRYTRQ1?
The VOS pin on the TPS62902QRYTRQ1 provides Kelvin sensing of the output voltage at the positive terminal of the output capacitor. This eliminates IR drop errors from PCB traces, ensuring ±1.5% regulation accuracy across temperature and load-critical for precision SoC and sensor rails.
Does the TPS62902QRYTRQ1 require an external bootstrap capacitor?
No, the TPS62902QRYTRQ1 does not require an external bootstrap capacitor. It integrates an internal charge pump that self-biases the high-side FET gate driver, simplifying layout, reducing BOM count, and improving reliability in automotive vibration environments.
TPS62902QRYTRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 9-TFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 0.4V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 2A
- Frequency - Switching:
- 1MHz, 2.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 9-VQFN-HR (2.2x2)
TPS62902QRYTRQ1 FAQ
1.How can I place an order for TPS62902QRYTRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62902QRYTRQ1 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 TPS62902QRYTRQ1 reliable?
The price and inventory of TPS62902QRYTRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62902QRYTRQ1 is usually 5 days.
3.What payment methods are accepted for TPS62902QRYTRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62902QRYTRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62902QRYTRQ1?
TPS62902QRYTRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62902QRYTRQ1 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 TPS62902QRYTRQ1?
For technical support, including TPS62902QRYTRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62902QRYTRQ1 requirements.
6.How does Aetrix verify that TPS62902QRYTRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS62902QRYTRQ1 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 TPS62902QRYTRQ1 meets industry standards.
7.What is the process for return or replacement of TPS62902QRYTRQ1?
All TPS62902QRYTRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62902QRYTRQ1, 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 TPS62902QRYTRQ1 part is unused and in its original packaging.
Return procedure for TPS62902QRYTRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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