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Texas Instruments TPS54618CQRTERQ1
- Part No.:
- TPS54618CQRTERQ1
- Manufacturer:
- Texas Instruments
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
TPS54618CQRTERQ1.pdf
- Description:
- IC REG BUCK ADJ 6A 16WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:7,685
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Product details
Overview
TPS54618CQRTERQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive synchronous buck converter delivering up to 6 A continuous output current, operating from 2.95 V to 6 V input, with ±1% voltage reference accuracy over –40°C to +150°C and integrated 12-mΩ high- and low-side MOSFETs for high-efficiency power delivery in ADAS camera modules.
For engineers reviewing the TPS54618CQRTERQ1 datasheet, TPS54618CQRTERQ1 pinout, TPS54618CQRTERQ1 application, or TPS54618CQRTERQ1 equivalent, key selection considerations include its 300 kHz–2 MHz adjustable switching frequency, RT/CLK synchronization capability, slow-start and tracking control via SS/TR pin, and open-drain PWRGD output with 93%–107% output voltage window detection.
Technical Context
The TPS54618CQRTERQ1 implements peak-current-mode control with internal slope compensation to prevent subharmonic oscillation across duty cycles, and features a PLL-synchronized RT/CLK pin enabling precise external clock alignment. Its error amplifier uses transconductance (245 µA/V) with dual-mode operation-reduced gm (79 µA/V) during slow start-to optimize transient response and startup stability.
Thermal management is enabled by the exposed thermal pad (PowerPad) connected to PCB ground via multiple vias, achieving RθJB = 15.96°C/W. Protection includes frequency foldback during overcurrent, thermal shutdown at 168°C with 20°C hysteresis, and BOOT UVLO monitoring to sustain 100% duty-cycle operation when BOOT–PH ≥ 2.2 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.95 V to 6 V - supports direct connection to automotive 3.3 V and 5 V rails without pre-regulation |
| Output Current | 6 A continuous - enables single-chip power supply for multi-rail SoCs in instrument clusters |
| Reference Accuracy | ±1% over –40°C to +150°C - ensures stable regulation under extreme under-hood temperature conditions |
| Switching Frequency | 300 kHz to 2 MHz - allows optimization of inductor size and efficiency trade-offs in space-constrained layouts |
| MOSFET RDS(on) | 12 mΩ (high-side typ.), 13 mΩ (low-side typ.) at 5 V - minimizes conduction loss and improves full-load efficiency |
| Quiescent Current | 515 µA typical - reduces standby power in always-on vehicle subsystems |
| Shutdown Current | 5.5 µA - enables ultra-low-power sleep mode for battery-backed systems |
| PWRGD Threshold | 93% to 107% of VREF - provides reliable system-level power sequencing and fault indication |
Pinout & Package
TPS54618CQRTERQ1 is housed in a thermally enhanced 3-mm × 3-mm, 16-pin WQFN package (RTE) with an exposed PowerPad for optimal PCB heat dissipation. The package footprint supports high-density automotive PCB layouts while maintaining robust thermal performance (RθJB = 15.96°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (1, 2, 16) | Input power supply | Accepts 2.95–6 V; pins 1/2/16 are paralleled for low-impedance input path and reduced trace inductance |
| PH (10, 11, 12) | Power switch node | Connects to external inductor; source of high-side MOSFET and drain of low-side MOSFET |
| BOOT (13) | Bootstrap gate drive | Requires 0.1 µF X7R/X5R ceramic capacitor to PH for high-side MOSFET gate bias; UVLO protection at 2.1 V |
| VSENSE (6) | Feedback input | Inverting input of error amplifier; compares output voltage (via resistor divider) to 0.799 V reference |
| COMP (7) | Error amplifier output | Drives PWM comparator; connects to RC compensation network for loop stability |
| EN (15) | Enable control | Internal pullup enables default operation; threshold 1.25 V rising / 1.18 V falling; supports UVLO adjustment with resistor divider |
| RT/CLK (8) | Frequency setting/sync | Configurable resistor-to-ground sets frequency (200–2000 kHz); accepts external clock (300–2000 kHz) with PLL lock |
| SS/TR (9) | Slow-start/tracking | External capacitor sets output ramp time; supports power sequencing with other regulators |
| PWRGD (14) | Power-good indicator | Open-drain output asserts low if VOUT falls outside 93–107% of target; 56 Ω typical on-resistance |
| AGND (5) | Analog ground | Must be connected to GND near device to minimize noise coupling into feedback path |
| GND (3, 4) | Power ground | Direct connection to PowerPad required; forms return path for high-current switching loops |
| Thermal Pad | Ground & thermal path | Exposed copper pad must be soldered to internal PCB ground plane using ≥4 thermal vias for RθJB compliance |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - meets automotive reliability and lifetime requirements |
| Integrated dual MOSFETs | 12 mΩ HS / 13 mΩ LS typical RDS(on) - eliminates external FETs and driver, reducing BOM count and layout area |
| Synchronization capability | RT/CLK pin supports PLL-based external clock sync - enables noise-sensitive systems to avoid EMI peaks |
| Adjustable slow start & tracking | SS/TR pin supports programmable soft-start and supply sequencing - prevents inrush current and ensures safe power-up order |
| UV/OV power-good output | PWRGD asserts low on undervoltage (91% VREF), overvoltage (109% VREF), thermal, or EN faults - simplifies system-level monitoring |
| Thermally optimized WQFN | 3 mm × 3 mm RTE package with PowerPad - achieves 15.96°C/W junction-to-board thermal resistance for compact high-power designs |
Applications
| Automotive Head Unit | Automotive Instrument Cluster |
|---|---|
Use Scenario: Powers infotainment SoC, display interface, and audio codec in centralized head unit assemblies. IC Role / Device Role / Timing Role: Primary 1.05 V/1.8 V/3.3 V step-down regulator delivering stable 6 A output with fast load transient response. Use Value: Integrated MOSFETs and 2 MHz max switching enable compact, low-noise power stage meeting CISPR-25 Class 5 EMI limits. |
Use Scenario: Supplies digital cluster MCU, TFT LCD bias, and CAN transceiver in safety-critical gauge displays. IC Role / Device Role / Timing Role: High-reliability buck converter with PWRGD monitoring and thermal shutdown for ASIL-B compatible subsystems. Use Value: ±1% reference accuracy and AEC-Q100 Grade 1 rating ensure consistent display brightness and timing integrity across temperature extremes. |
| Automotive ADAS Camera | Automotive Telematics Control Unit |
Use Scenario: Provides clean, low-noise 1.2 V core voltage for image signal processor (ISP) and 2.8 V for CMOS image sensor in front-facing cameras. IC Role / Device Role / Timing Role: Synchronous buck with SS/TR tracking ensures coordinated power-up of ISP and sensor to avoid initialization faults. Use Value: 300 kHz–2 MHz frequency adjustability allows EMI tuning to avoid interference with radar bands (76–81 GHz). |
Use Scenario: Delivers 1.8 V and 3.3 V rails for LTE modem, GNSS receiver, and secure boot MCU in cellular-connected telematics units. IC Role / Device Role / Timing Role: Dual-output capable via tracking configuration; PWRGD signals system controller upon stable rail establishment. Use Value: 5.5 µA shutdown current extends battery life during vehicle sleep mode without compromising wake-up responsiveness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS54620RHLT | Same 6-A rating, 2.95–6 V input, but non-automotive grade; lacks AEC-Q100 qualification and functional safety documentation | Targeted at industrial/commercial systems; not suitable for production automotive ECUs | Select only for prototyping or non-safety-critical evaluation where automotive qualification is unnecessary |
| TPS62816QWRVCRQ1 | 6-A, 2.7–6 V input, 2 mm × 3 mm QFN with wettable flanks; higher efficiency at light loads due to DCS-Control topology | Better suited for ultra-compact layouts and dynamic load profiles; lacks RT/CLK sync and PWRGD hysteresis spec | Prefer for new designs prioritizing board area reduction and partial-load efficiency over clock synchronization flexibility |
Compared with TPS54618CQRTERQ1, TPS54620RHLT offers identical electrical specs but no automotive qualification, while TPS62816QWRVCRQ1 delivers smaller footprint and superior light-load efficiency at the cost of reduced timing control granularity and different fault reporting behavior.
Availability
TPS54618CQRTERQ1 is available at Aetrix Electronics and suitable for automotive head unit, instrument cluster, and ADAS camera applications requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for TPS54618CQRTERQ1 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 TPS54618C-Q1 belongs to TI's automotive-qualified DC/DC converter product line, designed specifically for demanding power delivery in ADAS, infotainment, and body electronics where AEC-Q100 Grade 1 operation and functional safety readiness are mandatory.
FAQ
What is the maximum supported switching frequency for TPS54618CQRTERQ1?
The TPS54618CQRTERQ1 supports a switching frequency range of 300 kHz to 2 MHz. This is achieved either by connecting a resistor from the RT/CLK pin to ground (for resistor-timed operation) or by applying an external clock signal (300–2000 kHz) to the same pin, which the internal PLL synchronizes to. At 500 kHz with a 400-kΩ RT resistor, typical frequency is 400–600 kHz.
Does TPS54618CQRTERQ1 require an external bootstrap diode?
No, the TPS54618CQRTERQ1 integrates the bootstrap recharge diode internally. Only a 0.1 µF X7R or X5R ceramic capacitor between BOOT and PH pins is required. This integration reduces component count and improves reliability compared to controllers requiring discrete bootstrap diodes.
How is output voltage set on TPS54618CQRTERQ1?
The output voltage of TPS54618CQRTERQ1 is set using a resistor divider from VOUT to VSENSE. The internal reference is 0.799 V, so R2 = R1 × (VOUT − 0.799 V) / 0.799 V. TI recommends 1% tolerance resistors; larger values improve light-load efficiency but increase noise sensitivity.
What protection features does TPS54618CQRTERQ1 include?
The TPS54618CQRTERQ1 includes overcurrent protection with frequency foldback, thermal shutdown at 168°C (20°C hysteresis), BOOT UVLO, input UVLO (2.45 V start), and PWRGD monitoring for output undervoltage (91% VREF) and overvoltage (109% VREF). These features ensure robust operation under fault conditions in automotive environments.
Can TPS54618CQRTERQ1 be used in non-automotive applications?
Yes, the TPS54618CQRTERQ1 can be used in industrial or commercial applications, though it carries AEC-Q100 qualification and functional safety documentation intended for automotive use. Its 6-A capability, wide input range, and high efficiency make it suitable for any demanding 3–6 V input buck application where reliability and thermal performance are critical.
TPS54618CQRTERQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-WFQFN Exposed Pad
- 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):
- 6V
- Voltage - Output (Min/Fixed):
- 0.799V
- Voltage - Output (Max):
- 6V
- Current - Output:
- 6A
- Frequency - Switching:
- 200kHz ~ 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-WQFN (3x3)
TPS54618CQRTERQ1 FAQ
1.How can I place an order for TPS54618CQRTERQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54618CQRTERQ1 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 TPS54618CQRTERQ1 reliable?
The price and inventory of TPS54618CQRTERQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54618CQRTERQ1 is usually 5 days.
3.What payment methods are accepted for TPS54618CQRTERQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54618CQRTERQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54618CQRTERQ1?
TPS54618CQRTERQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54618CQRTERQ1 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 TPS54618CQRTERQ1?
For technical support, including TPS54618CQRTERQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54618CQRTERQ1 requirements.
6.How does Aetrix verify that TPS54618CQRTERQ1 is sourced from the original manufacturer or authorized distributors?
All TPS54618CQRTERQ1 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 TPS54618CQRTERQ1 meets industry standards.
7.What is the process for return or replacement of TPS54618CQRTERQ1?
All TPS54618CQRTERQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS54618CQRTERQ1, 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 TPS54618CQRTERQ1 part is unused and in its original packaging.
Return procedure for TPS54618CQRTERQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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