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Texas Instruments TPS62147RGXT
- Part No.:
- TPS62147RGXT
- Manufacturer:
- Texas Instruments
- Package:
- 11-VFQFN
- Datasheet:
-
TPS62147RGXT.pdf
- Description:
- IC REG BUCK ADJ 2A 11VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,900
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Product details
Overview
TPS62147RGXT from Texas Instruments is a synchronous step-down DC/DC converter with DCS-Control topology, delivering 2-A continuous output current across a 3-V to 17-V input range. It achieves ±1% output voltage accuracy in PWM mode, supports adjustable output from 0.8 V to 12 V, and features 18-µA typical quiescent current - enabling high-efficiency power delivery for industrial PC and video surveillance POL supplies.
For engineers reviewing the TPS62147RGXT datasheet, TPS62147RGXT pinout, TPS62147RGXT application, or TPS62147RGXT equivalent, key selection criteria include its HICCUP overcurrent protection (distinct from TPS62148's active discharge), 1.25/2.5-MHz selectable switching frequency via FSEL, 100% duty-cycle operation for low-dropout battery-powered use, and precise ENABLE threshold for custom UVLO and sequencing.
Technical Context
The TPS62147RGXT implements DCS-Control topology - combining fast transient response via direct output voltage sensing with stable DC regulation through an internal compensated voltage feedback loop. It operates in forced PWM (with fixed 1.25 MHz or 2.5 MHz switching) or seamless PWM/PFM mode, where Automatic Efficiency Enhancement (AEE) dynamically scales on-time based on VIN, VOUT, and load to maintain high efficiency across 10 µA–2 A.
Its functional architecture includes integrated high-side (100–180 mΩ) and low-side (39–67 mΩ) MOSFETs, HICCUP overcurrent protection (trip at 2.8–4.2 A, auto-retry), thermal shutdown at 160°C with 20°C hysteresis, and a precision ENABLE input (0.77–0.83 V rising threshold) enabling user-defined undervoltage lockout and exact rail sequencing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3 V to 17 V - supports multi-cell Li-ion batteries and standard 12-V intermediate rails without external pre-regulation. |
| Output Current | 2 A continuous - sufficient for powering FPGA I/O banks, microcontroller cores, or industrial sensor interfaces. |
| Output Voltage Accuracy | ±1% in PWM mode - enables tight regulation for ADC references or memory I/O supply without post-regulation. |
| Quiescent Current | 18 µA typical - minimizes standby power loss in always-on industrial monitoring systems. |
| Switching Frequency | 1.25 MHz or 2.5 MHz (FSEL-selectable) - allows compact 2.2-µH or 1-µH inductor selection and EMI-aware layout partitioning. |
| Overcurrent Protection | HICCUP mode - limits fault energy during sustained overload while enabling automatic recovery after cooling. |
| Thermal Shutdown | 160°C with 20°C hysteresis - protects against PCB-level thermal runaway in enclosed enclosures. |
Pinout & Package
TPS62147RGXT is housed in a 3.00 mm × 2.00 mm, 11-pin VQFN package (RGX) with wettable flanks for automated optical inspection. Thermal resistance is RθJA = 38.4°C/W, and the exposed thermal pad must be soldered to a dedicated PCB thermal plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Accepts 3–17 V; requires local 10-µF ceramic capacitor directly to GND for stability and transient response. |
| SW | Switch node | Connects to external inductor; carries high di/dt - must be routed short and wide to minimize EMI and voltage spikes. |
| GND / AGND | Ground terminals | GND is power ground; AGND is analog ground - both must connect to same low-impedance ground plane under IC. |
| FB | Voltage feedback | Senses output via resistor divider; 0.7-V reference enables 0.8–12-V adjustable output with <1% error. |
| VOS | Output voltage sense | Direct connection to output capacitor positive terminal improves load regulation by compensating trace IR drop. |
| PG | Power-good open-drain | Signals valid regulation (93–98% VOUT); used for system-level power sequencing with external pull-up. |
| EN | Enable control | 0.77–0.83 V rising threshold - supports RC-delay startup or resistor-divider UVLO down to ~2.6 V input. |
| SS/TR | Soft-start/tracking | Capacitor sets ramp time; also accepts external voltage for coordinated multi-rail tracking during power-up. |
| MODE | Operation mode select | Low = PWM/PFM + AEE; High = forced PWM - determines efficiency vs. noise trade-off in final design. |
| FSEL | Frequency select | Low = 1.25 MHz (2.2-µH inductor); High = 2.5 MHz (1-µH inductor) - defines BOM and layout constraints. |
Key Features
| Feature | Design Value |
|---|---|
| DCS-Control topology | Enables sub-10-µs load transient response with <1% output deviation - critical for real-time PLC I/O modules. |
| Automatic Efficiency Enhancement (AEE) | Dynamically adjusts on-time in PFM mode to sustain >85% efficiency from 100 µA to full 2-A load - eliminates need for external efficiency optimization. |
| 100% duty-cycle mode | Maintains regulation when VIN approaches VOUT (e.g., 3.6 V → 3.3 V from single Li-ion cell), extending battery runtime in portable industrial tools. |
| Precision ENABLE input | 100-mV hysteresis between rising/falling thresholds enables robust, noise-immune sequencing without external comparators. |
| HICCUP overcurrent protection | Limits fault current to ≤4.2 A and cycles off/on during sustained overload - prevents thermal damage in factory automation motor drivers. |
Applications
| Industrial PLC Power Rails | Video Surveillance SoC Supplies |
|---|---|
Use Scenario: Providing clean, regulated 3.3-V and 5-V rails for programmable logic controller CPU, I/O isolators, and communication interfaces in harsh factory environments. IC Role / Device Role / Timing Role: Primary POL regulator converting 12-V backplane to point-of-load voltages with tight transient response and thermal resilience. Use Value: ±1% output accuracy ensures reliable ADC sampling and digital logic timing; HICCUP protection survives momentary short circuits on field-wired I/O channels. | Use Scenario: Powering image signal processors (ISP), DDR memory, and AI accelerators in IP cameras operating 24/7 with ambient temperatures up to 70°C. IC Role / Device Role / Timing Role: High-efficiency, low-noise buck converter supporting connected-standby modes and rapid wake-from-sleep transitions. Use Value: 18-µA quiescent current minimizes overnight power draw; DCS-Control maintains <10-mV output ripple during burst-mode video encoding. |
| Mobile Industrial Computers | Building Automation Controllers |
Use Scenario: Supplying core voltage (1.1 V) and I/O voltage (3.3 V) to ARM-based controllers in handheld HMIs and rugged tablets deployed in warehouses. IC Role / Device Role / Timing Role: Dual-output-capable POL regulator (via FB/VOS configuration) delivering stable voltage under dynamic CPU load changes. Use Value: 100% duty-cycle operation extends usable battery life when input drops to 3.4 V; MODE pin enables forced PWM for deterministic EMI during wireless transmission. | Use Scenario: Generating 5-V and 3.3-V rails for HVAC controllers, smart lighting gateways, and access control panels powered from 12-V PoE injectors or local batteries. IC Role / Device Role / Timing Role: Compact, thermally robust DC/DC converter meeting long-lifetime reliability requirements in sealed enclosures. Use Value: 3×2-mm VQFN package fits space-constrained PCBs; RθJA = 38.4°C/W enables operation without heatsinks at 75°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62135RGXT | 1.5-A output, 2.5-V to 17-V input, no HICCUP protection - uses cycle-by-cycle current limit. | Lower current capability; less robust in sustained overload scenarios like motor driver gate drive shorts. | Select when 1.5-A max load suffices and cost sensitivity outweighs fault tolerance requirements. |
| TPS62148RGXT | Same 2-A rating and pinout, but adds active output discharge and removes HICCUP - uses constant-current short-circuit protection. | Required where fast VOUT discharge is needed (e.g., hot-swap systems), but unsuitable for applications needing auto-recovery from intermittent faults. | Choose only if active discharge is mandatory and HICCUP behavior is not required for system safety. |
Compared with TPS62135RGXT, the TPS62147RGXT delivers higher current and superior fault handling; compared with TPS62148RGXT, it trades active discharge for robust HICCUP recovery - making it preferred for industrial control nodes where unattended fault recovery is essential.
Availability
TPS62147RGXT is available at Aetrix Electronics and suitable for industrial PLCs, video surveillance systems, and mobile industrial computers requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for TPS62147RGXT 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 power management technologies, with decades of expertise in high-reliability industrial power solutions.
The TPS62147RGXT belongs to TI's DCS-Control buck converter family, engineered specifically for high-efficiency, low-noise POL regulation in space-constrained industrial and embedded systems demanding precision, thermal resilience, and fault tolerance.
FAQ
What is the maximum continuous output current of the TPS62147RGXT?
The TPS62147RGXT delivers 2 A continuous output current under recommended operating conditions (TJ ≤ 125°C, proper PCB thermal design). This rating assumes use of the specified 3.00 mm × 2.00 mm VQFN package with adequate copper pour and airflow. Derating applies above 85°C ambient; full 2-A operation is validated with RθJA ≤ 38.4°C/W and VIN ≥ 4 V.
Does the TPS62147RGXT support 100% duty-cycle operation, and what is its practical benefit?
Yes, the TPS62147RGXT supports true 100% duty-cycle operation - maintaining regulation when VIN approaches VOUT (e.g., 3.4 V input → 3.3 V output). This extends usable battery voltage range in portable industrial tools and medical devices, delaying brownout shutdown and maximizing runtime from single-cell Li-ion or NiMH sources without requiring additional LDO stages.
How does the HICCUP overcurrent protection in the TPS62147RGXT differ from standard current limiting?
The TPS62147RGXT uses HICCUP overcurrent protection: upon current limit detection (2.8–4.2 A), it disables switching, waits for thermal recovery (~ms), then attempts restart. Unlike constant-current foldback or latch-off, HICCUP limits total fault energy while enabling autonomous recovery - ideal for industrial I/O modules where field wiring faults may be transient and self-clearing.
Can the TPS62147RGXT be used with an output voltage lower than 0.8 V?
No - the TPS62147RGXT's internal 0.7-V feedback reference and specified accuracy range constrain the minimum output to 0.8 V (VFB = 0.7 V, ±1%, with resistor divider scaling). Attempting sub-0.8-V outputs violates the electrical characteristics table and degrades regulation accuracy, line/load regulation, and thermal performance. For lower voltages, consider the TPS62150 or TPS62160 families.
What is the role of the VOS pin on the TPS62147RGXT, and how should it be connected?
On the TPS62147RGXT, the VOS (Voltage Output Sense) pin provides remote output voltage sensing to compensate for PCB trace resistance between the converter and load. It must be connected directly to the positive terminal of the main output capacitor - not to the FB divider node - to enable accurate load regulation and minimize voltage droop under dynamic current steps, especially in distributed power architectures.
TPS62147RGXT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- DCS-Control™
- Package/Case:
- 11-VFQFN
- 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):
- 17V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 12V
- Current - Output:
- 2A
- Frequency - Switching:
- 2.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 11-VQFN-HR (2x3)
TPS62147RGXT FAQ
1.How can I place an order for TPS62147RGXT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62147RGXT 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 TPS62147RGXT reliable?
The price and inventory of TPS62147RGXT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62147RGXT is usually 5 days.
3.What payment methods are accepted for TPS62147RGXT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62147RGXT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62147RGXT?
TPS62147RGXT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62147RGXT 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 TPS62147RGXT?
For technical support, including TPS62147RGXT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62147RGXT requirements.
6.How does Aetrix verify that TPS62147RGXT is sourced from the original manufacturer or authorized distributors?
All TPS62147RGXT 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 TPS62147RGXT meets industry standards.
7.What is the process for return or replacement of TPS62147RGXT?
All TPS62147RGXT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62147RGXT, 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 TPS62147RGXT part is unused and in its original packaging.
Return procedure for TPS62147RGXT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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