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Texas Instruments TPS62143RGTT
- Part No.:
- TPS62143RGTT
- Manufacturer:
- Texas Instruments
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
TPS62143RGTT.pdf
- Description:
- IC REG BUCK 5V 2A 16VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,076
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Product details
Overview
TPS62143RGTT from Texas Instruments is a synchronous step-down DC-DC converter optimized for high-power-density POL applications, delivering up to 2 A continuous output current at fixed 5.0 V from 3 V–17 V input, featuring DCS-Control™ topology, 2.5 MHz typical switching frequency, and integrated power-good output.
For engineers reviewing the TPS62143RGTT datasheet, TPS62143RGTT pinout, TPS62143RGTT application, or TPS62143RGTT equivalent, key selection considerations include its 5.0 V fixed output, VQFN-16 (3 mm × 3 mm) package, seamless PWM-to-power-save mode transition, 17 µA quiescent current, and compatibility with Li-ion battery and 12-V rail systems.
Technical Context
The TPS62143RGTT implements DCS-Control™-a hybrid regulation architecture combining voltage-mode stability with hysteretic-like transient response-enabling fast load-step recovery while maintaining tight DC regulation via an internal compensated error amplifier and direct output-voltage sensing through VOS and FB pins.
It operates in PWM mode at 2.5 MHz (FSW = low) or 1.25 MHz (FSW = high), supports 100% duty-cycle operation for ultra-low dropout, and integrates undervoltage lockout (2.7 V threshold, 200 mV hysteresis), thermal shutdown (160°C, 20°C hysteresis), and short-circuit protection with reduced 1.6 A current limit below 0.5 V output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3 V to 17 V - supports single/multi-cell Li-ion batteries and standard 12-V intermediate rails without external pre-regulation. |
| Output Voltage | Fixed 5.0 V - eliminates external feedback resistors, reducing BOM count and layout sensitivity for stable 5-V rail generation. |
| Max Output Current | 2 A continuous - sustains full load under thermal limits (RθJA = 45°C/W) with proper PCB copper and thermal pad soldering. |
| Quiescent Current | 17 µA typical - enables >100-hour standby in battery-powered devices while maintaining regulated 5-V output. |
| Switching Frequency | 2.5 MHz typical (FSW = low) - permits use of ≤2.2 µH inductors and 22 µF ceramic output capacitors for compact, high-density designs. |
| Power-Good Logic | Open-drain, high-impedance when active - requires external pullup; signals valid regulation (±3% window) for system sequencing and fault detection. |
| Thermal Shutdown | 160°C junction temperature - disables both FETs and asserts PG high-impedance; resumes after 20°C hysteresis for self-recovery. |
Pinout & Package
TPS62143RGTT is housed in a thermally enhanced 16-pin VQFN package (RGT suffix), 3.00 mm × 3.00 mm body size, with exposed thermal pad soldered to AGND/PGND for optimal power dissipation and EMI control.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,2,3 SW | Switch node | Connects to internal high-/low-side MOSFETs; ties directly to inductor; requires low-inductance routing to minimize switching noise. |
| 4 PG | Power-good open-drain output | Asserts high-impedance when VOUT ≥ 95% nominal; sinks 2 mA max; used for rail sequencing and system enable coordination. |
| 5 FB | Feedback input | Internally tied to fixed 5.0 V divider; connect to AGND per datasheet for thermal performance-no external resistor needed. |
| 6 AGND | Analog ground | Must be connected to exposed thermal pad and system ground plane; separates analog reference from power return paths. |
| 7 FSW | Frequency select input | Low = 2.5 MHz (default); high = 1.25 MHz; internal 400 kΩ pulldown ensures safe startup if left unconnected. |
| 8 DEF | Output voltage scaling input | Low = 5.0 V nominal; high = 5.25 V (+5%); internal pulldown enables margining without external logic. |
| 9 SS/TR | Soft-start/tracking input | External capacitor sets ramp time; supports monotonic start into pre-biased rails and voltage tracking with master supplies. |
| 10 AVIN | Analog supply input | Must tie to same source as PVIN; powers control circuitry-decoupling near pin improves noise immunity. |
| 11,12 PVIN | Power stage supply input | High-current path for MOSFET drivers; separate from AVIN but co-located; requires low-ESR bulk capacitance. |
| 13 EN | Enable input | Active-high; internal 400 kΩ pulldown ensures default disable; supports precise power-rail sequencing via external controller. |
| 14 VOS | Output voltage sense | Direct connection to output for accurate regulation; enables remote sensing capability when routed separately from FB. |
| 15,16 PGND | Power ground | Carries high di/dt switch currents; must connect to exposed thermal pad and common ground plane with multiple vias. |
Key Features
| Feature | Design Value |
|---|---|
| DCS-Control™ topology | Combines fast transient response (<10 µs recovery from 1-A load step) with stable DC regulation-no external compensation required. |
| Seamless power-save mode | Automatically transitions from 2.5-MHz PWM to variable-frequency light-load operation without output voltage glitch or audible noise. |
| 100% duty-cycle mode | Enables regulation down to VIN ≈ VOUT + (IOUT × RDS(on)_HS + IOUT × RL), extending runtime in battery discharge tail-end. |
| Programmable soft-start | External capacitor on SS/TR sets controlled VOUT ramp rate-prevents inrush into large capacitive loads and avoids brownout in shared rails. |
| Pin-selectable +5% output | DEF pin toggles between 5.0 V and 5.25 V without changing BOM-supports voltage margining for SoC VDD tolerance validation. |
Applications
| Mobile PC Power Rail | Solid-State Drive (SSD) Core Supply |
|---|---|
|
Use Scenario: Powers 5-V I/O interfaces and auxiliary logic in ultrabooks and 2-in-1 tablets operating from single-cell or dual-cell Li-ion batteries. IC Role / Device Role / Timing Role: Primary buck regulator delivering regulated 5.0 V at up to 2 A with dynamic load handling during USB enumeration and NVMe link training. Use Value: DCS-Control™ ensures <50 mV output deviation during 1-A transients; 17 µA IQ extends suspend-mode battery life beyond 7 days. |
Use Scenario: Supplies 5-V VCC for NAND flash controllers and PCIe bridge ICs in M.2 and U.2 SSD modules. IC Role / Device Role / Timing Role: High-efficiency POL converter supporting burst-mode operation during read/write cycles and deep-sleep states. Use Value: Seamless power-save mode maintains >85% efficiency at 10-mA load; 2.5-MHz switching minimizes EMI near high-speed serial lanes. |
| Industrial Point-of-Sale Terminal | Embedded System 12-V to 5-V Conversion |
|
Use Scenario: Generates clean 5-V rail for touchscreens, barcode scanners, and secure element ICs in retail ePOS terminals powered from 12-V wall adapters. IC Role / Device Role / Timing Role: Robust front-end DC-DC converter with UVLO (2.7 V), thermal shutdown (160°C), and short-circuit protection for unattended operation. Use Value: 100% duty-cycle mode sustains 5-V output down to 5.5 V input-critical during brownout events in commercial AC environments. |
Use Scenario: Replaces linear regulators in industrial gateways and PLC I/O modules requiring efficient 12-V to 5-V conversion with minimal heat rise. IC Role / Device Role / Timing Role: Compact, thermally optimized buck solution eliminating heatsinks while meeting EN 55022 Class B conducted emissions. Use Value: 3 mm × 3 mm VQFN package with exposed thermal pad achieves <25°C temperature rise at 2 A with 1-in² 2-oz copper. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62142RGTT | Fixed 3.3 V output; identical pinout, package, and feature set except output voltage and DEF/PG behavior. | Used where 3.3 V logic rails dominate; not suitable for 5-V peripherals without level-shifting. | Select TPS62142RGTT only when system requires 3.3 V-not 5 V-and all other specs align. |
| TPS62150ARGTT | Adjustable output (0.9 V–6 V); same 3–17 V input, 2 A rating, and DCS-Control™, but lacks pin-selectable +5% and uses different PG logic. | Preferred for multi-rail systems needing programmable outputs; requires external feedback resistors and adds design complexity. | Choose TPS62150ARGTT when adjustable VOUT and wider flexibility outweigh fixed 5-V simplicity and lower BOM cost. |
Compared with TPS62143RGTT, TPS62142RGTT offers identical performance at 3.3 V but cannot deliver 5 V, while TPS62150ARGTT trades fixed-output simplicity for design flexibility-requiring external resistors and sacrificing the +5% margining feature critical for validation testing.
Availability
TPS62143RGTT is available at Aetrix Electronics and suitable for mobile PCs, solid-state drives, and industrial point-of-sale terminals requiring stable component supply, long-term manufacturability, and automotive-grade reliability screening.
Supply support for TPS62143RGTT 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-efficiency DC-DC conversion.
The TPS6214x family was designed specifically for space-constrained, high-current POL applications in portable and embedded systems-emphasizing small solution size, low IQ, and robust protection features without external compensation.
FAQ
What is the output voltage of the TPS62143RGTT?
The TPS62143RGTT provides a fixed 5.0 V output voltage. This is factory-trimmed and does not require external feedback resistors. The DEF pin allows temporary scaling to 5.25 V (+5%) for margin testing, but the nominal regulation point remains 5.0 V across temperature and line conditions as specified in the electrical characteristics table.
Does the TPS62143RGTT support 100% duty-cycle operation?
Yes, the TPS62143RGTT enters 100% duty-cycle mode when the input voltage approaches the output voltage-specifically when VIN drops within ~15% above VOUT. In this mode, the high-side MOSFET remains continuously on, enabling regulation down to VIN ≈ VOUT + (IOUT × RDS(on)_HS + IOUT × RL), which extends usable battery life in portable applications.
What package type and dimensions does the TPS62143RGTT use?
The TPS62143RGTT uses a 16-pin VQFN package with RGT designation, measuring 3.00 mm × 3.00 mm with an exposed thermal pad. This package is optimized for thermal performance and board space efficiency, requiring soldering of the thermal pad to AGND/PGND for proper power dissipation and EMI control per TI's layout guidelines.
How does the power-good (PG) pin function on the TPS62143RGTT?
The PG pin on the TPS62143RGTT is an open-drain output that goes high-impedance when VOUT reaches ≥95% of nominal (4.75 V) and falls low-impedance if VOUT drops below 90% (4.5 V). It requires an external pullup resistor (to ≤7 V) and can sink up to 2 mA. PG remains high-impedance during shutdown, UVLO, or thermal fault-enabling reliable system sequencing.
Is the TPS62143RGTT pin-compatible with other devices in the TPS6214x family?
Yes, the TPS62143RGTT is pin-to-pin compatible with all members of the TPS6214x family-including TPS62140, TPS62141, TPS62142, and TPS62140A-as well as with the TPS62130 and TPS62150 families. This allows drop-in replacement across output voltages and features, provided external components (e.g., feedback network, soft-start cap) match the target device's configuration.
TPS62143RGTT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- DCS-Control™
- Package/Case:
- 16-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 17V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 2A
- Frequency - Switching:
- 2.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-VQFN (3x3)
TPS62143RGTT FAQ
1.How can I place an order for TPS62143RGTT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62143RGTT 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 TPS62143RGTT reliable?
The price and inventory of TPS62143RGTT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62143RGTT is usually 5 days.
3.What payment methods are accepted for TPS62143RGTT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62143RGTT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62143RGTT?
TPS62143RGTT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62143RGTT 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 TPS62143RGTT?
For technical support, including TPS62143RGTT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62143RGTT requirements.
6.How does Aetrix verify that TPS62143RGTT is sourced from the original manufacturer or authorized distributors?
All TPS62143RGTT 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 TPS62143RGTT meets industry standards.
7.What is the process for return or replacement of TPS62143RGTT?
All TPS62143RGTT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62143RGTT, 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 TPS62143RGTT part is unused and in its original packaging.
Return procedure for TPS62143RGTT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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