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Texas Instruments TPS62140ARGTT
- Part No.:
- TPS62140ARGTT
- Manufacturer:
- Texas Instruments
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
TPS62140ARGTT.pdf
- Description:
- IC REG BUCK ADJ 2A 16VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,241
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Product details
Overview
TPS62140 from Texas Instruments is a synchronous step-down DC-DC converter optimized for high-power-density applications, delivering up to 2 A continuous output current across an input voltage range of 3 V to 17 V, with adjustable output voltage from 0.9 V to 6 V, and featuring DCS-Control™ topology for fast transient response in embedded systems and solid-state drives.
For engineers reviewing the TPS62140 datasheet, TPS62140 pinout, TPS62140 application, or TPS62140 equivalent, key selection considerations include its 2.5 MHz (typ.) switching frequency, 17 µA quiescent current in power-save mode, 16-pin VQFN-3×3 mm package, and seamless PWM-to-power-save mode transition under light-load conditions.
Technical Context
The TPS62140 implements DCS-Control™ topology-combining hysteretic, voltage-mode, and current-mode regulation-with a direct AC loop tied to output voltage for immediate load transient response and stable DC regulation via internal compensation. It supports both continuous conduction mode (CCM) at 2.5 MHz (FSW = low) and reduced-frequency operation at ~1.25 MHz (FSW = high).
Its functional architecture includes integrated high-side (90 mΩ typ. @ VIN ≥ 6 V) and low-side MOSFETs, programmable soft-start/tracking via external capacitor on SS/TR, open-drain power-good (PG) output with 92–98% rising threshold, and pin-selectable +5% output voltage scaling via DEF pin-all operating within –40°C to 125°C junction temperature range.
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 Current | Up to 2 A continuous - enables replacement of LDOs in POL supplies for processors, FPGAs, and SSD controllers. |
| Output Voltage Range | 0.9 V to 6 V adjustable - set via external FB resistive divider; initial accuracy ±1.7% (800 mV nominal reference). |
| Quiescent Current | 17 µA typical - sustains high efficiency down to microamp-level loads in always-on subsystems. |
| Switching Frequency | 2.5 MHz (typ., FSW = low) - allows use of compact 1–2.2 µH inductors and <22 µF ceramic output capacitors. |
| Thermal Shutdown | 160°C with 20°C hysteresis - protects against sustained overload or poor PCB thermal design without latch-off. |
| Undervoltage Lockout | 2.7 V threshold with 200 mV hysteresis - prevents erratic startup during battery sag or brownout conditions. |
Pinout & Package
TPS62140 is housed in a thermally enhanced 16-pin VQFN package (RGT), measuring 3.00 mm × 3.00 mm, with an 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; requires low-ESR inductor between SW and output capacitor. |
| 4 PG | Power-good open-drain output | Signals VOUT regulation status (high-impedance when enabled & in spec); requires external pullup to ≤7 V. |
| 5 FB | Feedback input | Sets output voltage via resistive divider; referenced to 0.8 V internal bandgap; connect to AGND for fixed versions. |
| 6 AGND | Analog ground | Must tie directly to exposed thermal pad and system ground plane to minimize noise coupling into control loop. |
| 7 FSW | Frequency select input | Low = ~2.5 MHz (high density), high = ~1.25 MHz (higher efficiency); internal 400 kΩ pulldown ensures default low. |
| 8 DEF | Output voltage scaling input | Low = nominal VOUT, high = VOUT + 5%; internal pulldown enables margining without external logic. |
| 9 SS/TR | Soft-start/tracking input | External capacitor sets startup ramp time; also accepts external voltage for supply tracking in multi-rail sequencing. |
| 10 AVIN | Analog supply input | Provides bias for control circuitry; must be connected to same source as PVIN for stable reference operation. |
| 11,12 PVIN | Power stage supply input | High-current path for internal MOSFETs; requires local 10 µF ceramic bypass near pins 11/12. |
| 13 EN | Enable input | Active-high; internal 400 kΩ pulldown ensures safe shutdown if left floating; supports rail sequencing. |
| 14 VOS | Voltage sense input | Direct connection point for output voltage sensing; improves loop stability and load regulation accuracy. |
| 15,16 PGND | Power ground | Carries high di/dt return current from low-side FET; must connect directly to exposed thermal pad and ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| DCS-Control™ topology | Enables <10 µs load transient response with minimal output capacitance while maintaining stable regulation across line/load variations. |
| 100% duty-cycle mode | Extends battery runtime by sustaining regulation down to VIN ≈ VOUT + IOUT × (RDS(on)_HS + R_L), e.g., 3.3 V out from 3.6 V Li-ion. |
| Programmable soft start & tracking | Eliminates inrush current and enables monotonic startup into pre-biased rails or synchronized sequencing with other converters. |
| Seamless power-save mode | Maintains >85% efficiency at 1 mA load without audible switching noise or output voltage droop during mode transitions. |
| Integrated protection suite | Includes undervoltage lockout (2.7 V), thermal shutdown (160°C), short-circuit current limiting (1.6 A during fault), and overtemperature hysteresis. |
Applications
| SSD Power Management | POL Supply for Mobile SoCs |
|---|---|
|
Use Scenario: Powering NAND flash and controller in M.2/U.2 solid-state drives from 3.3 V or 12 V rails. IC Role / Device Role / Timing Role: Primary buck regulator delivering tightly regulated 1.2 V/1.8 V core and I/O voltages with fast load-step response. Use Value: DCS-Control™ ensures <50 mV output deviation during 1-A load transients, minimizing data corruption risk during burst writes. |
Use Scenario: Point-of-load conversion for application processors in tablets and mobile PCs powered by single-cell Li-ion (3.0–4.2 V). IC Role / Device Role / Timing Role: High-efficiency step-down converter supplying CPU/GPU cores with dynamically scaled voltages (0.9–1.3 V). Use Value: 17 µA quiescent current extends standby battery life; 100% duty-cycle mode enables full functionality down to 3.3 V battery voltage. |
| Server Board Rail Sequencing | LDO Replacement in Embedded Systems |
|
Use Scenario: Generating multiple synchronized rails (e.g., 1.8 V, 3.3 V, 5 V) on microserver motherboards with strict power-up timing. IC Role / Device Role / Timing Role: Adjustable-output converter configured with EN/PG/SS/TR pins to implement precise voltage ramping and inter-rail dependency. Use Value: Programmable soft-start and open-drain PG output enable robust, repeatable power sequencing without external supervisors. |
Use Scenario: Replacing inefficient linear regulators in industrial gateways and IoT edge nodes requiring 3.3 V or 5 V from 12 V input. IC Role / Device Role / Timing Role: High-current buck converter delivering 2 A at >90% efficiency, reducing board heat and enabling smaller enclosures. Use Value: 2-A capability and 45°C/W θJA allow full-rated output in compact 3×3 mm footprint without heatsinks or forced airflow. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62141 | Fixed 1.8 V output; identical pinout and package; PG logic high-impedance in shutdown. | Eliminates FB resistor network; suited for dedicated 1.8 V core rails where adjustability is unnecessary. | Select TPS62141 when output voltage is fixed and bill-of-materials simplification is prioritized over flexibility. |
| TPS62130 | Lower 3–6 V input range; 1.5 A max output; same 3×3 mm VQFN-16 package and pin-compatible layout. | Optimized for single-cell Li-ion (3–4.2 V) only; not suitable for 12 V intermediate bus or wide-input designs. | Choose TPS62130 only for cost-sensitive, lower-current applications strictly within 3–6 V input range. |
Compared with TPS62140, TPS62141 offers simplified design for fixed 1.8 V use but forfeits adjustability, while TPS62130 reduces input range and output current-making it unsuitable as a drop-in replacement in 12 V or 2 A applications.
Availability
TPS62140 is available at Aetrix Electronics and suitable for solid-state drives, mobile SoC power delivery, and server board rail sequencing requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS62140 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 ICs, with decades of expertise in high-efficiency DC-DC conversion and automotive-grade reliability.
The TPS6214x product line was designed specifically for high-power-density, wide-input-voltage POL applications in computing, storage, and industrial systems-emphasizing fast transient response, ultra-low quiescent current, and seamless light-load efficiency.
FAQ
What is the maximum output current capability of the TPS62140?
The TPS62140 delivers up to 2 A of continuous output current under recommended operating conditions (TJ ≤ 125°C, proper thermal layout). Peak current limit is typically 2.45–3.5 A depending on input voltage and temperature. Sustained 2 A operation requires adequate PCB copper area and thermal vias beneath the exposed pad to maintain junction temperature within limits.
Does the TPS62140 support power sequencing with other voltage rails?
Yes, the TPS62140 supports robust power sequencing via its EN, PG, and SS/TR pins. The open-drain PG output can drive the EN pin of downstream converters, while SS/TR enables voltage ramp synchronization. This allows precise control of startup order and timing in multi-rail systems such as servers or FPGA-based platforms.
How does the DCS-Control™ topology improve transient response in the TPS62140?
The DCS-Control™ topology in the TPS62140 uses a direct AC feedback path tied to the output voltage, enabling sub-microsecond response to load steps without relying solely on slow voltage-loop compensation. This results in <10 µs recovery time and <50 mV deviation for 1-A transients-critical for powering sensitive digital loads like SSD controllers.
Can the TPS62140 operate with input voltage close to the output voltage?
Yes, the TPS62140 enters 100% duty-cycle mode when VIN approaches VOUT, maintaining regulation down to VIN ≈ VOUT + IOUT × (RDS(on)_HS + R_L). For example, with 1.2 V output and 1 A load, it sustains regulation from ~1.35 V input-extending usable battery range in Li-ion-powered devices.
What is the purpose of the DEF pin on the TPS62140?
The DEF pin on the TPS62140 enables dynamic output voltage margining: pulling DEF high increases regulated output by +5% (e.g., 1.2 V → 1.26 V), supporting system-level voltage validation, aging tests, or adaptive performance tuning. An internal 400 kΩ pulldown ensures nominal regulation when DEF is unconnected or floating.
TPS62140ARGTT 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:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 17V
- Voltage - Output (Min/Fixed):
- 0.9V
- Voltage - Output (Max):
- 6V
- 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)
TPS62140ARGTT FAQ
1.How can I place an order for TPS62140ARGTT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62140ARGTT 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 TPS62140ARGTT reliable?
The price and inventory of TPS62140ARGTT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62140ARGTT is usually 5 days.
3.What payment methods are accepted for TPS62140ARGTT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62140ARGTT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62140ARGTT?
TPS62140ARGTT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62140ARGTT 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 TPS62140ARGTT?
For technical support, including TPS62140ARGTT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62140ARGTT requirements.
6.How does Aetrix verify that TPS62140ARGTT is sourced from the original manufacturer or authorized distributors?
All TPS62140ARGTT 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 TPS62140ARGTT meets industry standards.
7.What is the process for return or replacement of TPS62140ARGTT?
All TPS62140ARGTT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62140ARGTT, 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 TPS62140ARGTT part is unused and in its original packaging.
Return procedure for TPS62140ARGTT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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