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Texas Instruments TPS62090RGTR
- Part No.:
- TPS62090RGTR
- Manufacturer:
- Texas Instruments
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
TPS62090RGTR.pdf
- Description:
- IC REG BUCK ADJ 3A 16VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,242
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Product details
Overview
TPS62090RGTR from Texas Instruments is a 3-A synchronous step-down DC-DC converter with DCS-Control™ topology, operating from 2.5 V to 6 V input and delivering adjustable output voltage (0.8 V to VIN) in a 3 mm × 3 mm QFN-16 package. It achieves up to 95% efficiency at 3 A load, features 2.8 MHz/1.4 MHz selectable switching frequency, 20 µA quiescent current in power save mode, and supports output voltage tracking for multi-rail sequencing in portable computing and storage systems.
For engineers reviewing the TPS62090RGTR datasheet, TPS62090RGTR pinout, TPS62090RGTR application, or TPS62090RGTR equivalent, key selection considerations include its DCS-Control™ transient response, 100% duty cycle low-dropout capability, hiccup-mode short-circuit protection, softstart programmability via external capacitor, and dual-frequency operation optimized for either compact layout (2.8 MHz) or peak efficiency (1.4 MHz).
Technical Context
The TPS62090RGTR implements DCS-Control™ - a hybrid regulation architecture combining hysteretic and voltage-mode control - enabling seamless PWM-to-power-save-mode transition without output disturbance. It uses an internal charge pump (CP/CN pins) to drive the high-side MOSFET gate, supporting 50 mΩ on-resistance and 4.6 A current limit.
Its functional modes include fixed-frequency PWM (2.8 MHz or 1.4 MHz), automatic power save mode below ~300 mA, 100% duty cycle dropout operation, and output discharge via 200 Ω internal resistor when disabled. Voltage tracking is implemented through the SS pin, which controls the feedback reference with 1.56× scaling relative to an external ramp or master rail.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5 V to 6 V - supports single-cell Li-ion (2.7–4.2 V) and USB-powered (5 V) systems without pre-regulation. |
| Output Current | 3 A continuous - delivers full rated current with thermal derating per RθJA = 47 °C/W in standard PCB layout. |
| Switching Frequency | 2.8 MHz (FREQ = GND) or 1.4 MHz (FREQ = VIN) - selects between small external components or higher light-load efficiency. |
| Quiescent Current | 20 µA in power save mode - enables >100-hour battery life in always-on subsystems (e.g., RTC, sensor wake-up logic). |
| Feedback Reference | 0.8 V ±1% - sets output voltage via resistor divider; accuracy holds across temperature and load in PWM mode. |
| Output Discharge | 200 Ω internal resistor - actively discharges VOUT during shutdown to prevent unintended re-powering or latch-up in multi-supply systems. |
| Thermal Shutdown | 150 °C with 20 °C hysteresis - protects against sustained overload or poor heatsinking; resumes operation after cooldown. |
Pinout & Package
TPS62090RGTR is housed in a thermally enhanced 16-pin QFN package (3.0 mm × 3.0 mm, 0.4 mm pitch) with exposed thermal pad connected to AGND. The package supports ≤47 °C/W junction-to-ambient thermal resistance under JEDEC JESD51-7 conditions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 SW | Power switch node | Connects to external inductor and output capacitor; carries high di/dt switching current - requires tight loop layout and ground plane stitching. |
| 3 FREQ | Frequency select input | Digital control: GND = 2.8 MHz, VIN = 1.4 MHz; internal 400 kΩ pull-down allows floating for default 2.8 MHz operation. |
| 4 PG | Open-drain power good | Sinks ≤1 mA when VOUT < 90% nominal; high-impedance when regulated - requires external pull-up to system rail ≤VIN. |
| 5 FB | Feedback input | Monitors output via resistor divider; 0.8 V reference enables adjustable VOUT from 0.8 V to VIN; internal 400 kΩ pull-down when EN = low. |
| 6 AGND | Analog ground reference | Reference for FB, SS, CP, CN, PG; must be isolated from noisy PGND until joined at single point near AVIN/PVIN. |
| 7 CP / 8 CN | Charge pump terminals | Connect external 10 nF capacitor; generates boosted gate drive for high-side FET - no other circuitry permitted on these pins. |
| 9 SS | Softstart/voltage tracking | Charged by 7.5 µA current source; sets startup ramp time or accepts external voltage for ratiometric/coincidental rail tracking. |
| 10 AVIN | Bias supply input | Powers internal analog circuitry; must be connected to same rail as PVIN or filtered version - decoupling required. |
| 11, 12 PVIN | Main power input | High-current path for input capacitor and switch node return; separate from AVIN to reduce noise coupling into control loop. |
| 13 EN | Enable input | Active-high logic; internal 400 kΩ pull-down allows direct MCU GPIO control; 0.6 µA shutdown current minimizes standby loss. |
| 14, 15 PGND | Power ground | Return path for high-current SW node and internal FETs; must be solid copper pour tied to thermal pad and isolated from AGND except at AVIN. |
| 16 VOS | Output voltage sense | Direct connection to output rail; enables accurate remote sensing and activates 200 Ω discharge path during disable/UVLO/thermal shutdown. |
Key Features
| Feature | Design Value |
|---|---|
| DCS-Control™ topology | Enables <50 µs load transient recovery with <2% undershoot/overshoot while maintaining seamless PWM-to-PFM transition - critical for CPU core voltage regulation. |
| Selectable 2.8 MHz / 1.4 MHz switching | 2.8 MHz allows use of 0.47 µH inductors and 22 µF ceramic output caps for ultra-compact designs; 1.4 MHz reduces switching losses by ~30% at light loads. |
| Hiccup-mode short-circuit protection | Reduces average fault current to <100 mA during sustained shorts - prevents thermal runaway and enables safe auto-recovery without system reset. |
| Adjustable softstart via external capacitor | Startup time = CSS × 7.5 µA / 1.25 V; supports precise sequencing with other rails (e.g., I/O before core) or inrush limiting for large output capacitance (>100 µF). |
| Output voltage tracking | SS pin accepts external ramp or master rail voltage; internal 1.56× scaling enables accurate ratiometric (e.g., 1.8 V → 3.3 V) or coincidental (same slope) sequencing without external op-amps. |
| 100% duty cycle operation | Maintains regulation down to VIN = VOUT + IOUT × (50 mΩ + LDCR) - extends usable battery range in portable devices by >15 minutes at end-of-discharge. |
Applications
| Processor Core Supply | SSD Main Power Rail |
|---|---|
Use Scenario: Powers ARM Cortex-A series or x86 Atom processor cores requiring tightly regulated 0.8–1.3 V at up to 3 A with fast transient response. IC Role / Device Role / Timing Role: Primary buck regulator implementing dynamic voltage scaling (DVS); provides VDD_CPU with <2% output deviation during 2 A/µs load steps. Use Value: DCS-Control™ ensures sub-50 µs recovery from 0→3 A transients, preventing processor stalls or cache corruption during burst workloads. | Use Scenario: Supplies 3.3 V main power to NAND flash controller and DRAM buffer in SATA or NVMe SSD modules. IC Role / Device Role / Timing Role: High-efficiency point-of-load regulator with hiccup-mode protection against NAND programming current surges. Use Value: 95% peak efficiency at 3 A reduces thermal load in sealed SSD enclosures; 20 µA quiescent current extends sleep-mode battery life in portable SSDs. |
| Notebook System Memory | Battery-Powered Industrial Sensor Hub |
Use Scenario: Delivers 1.5 V DDR3L or 1.2 V LPDDR4 memory rail in ultrabook platforms with strict EMI and size constraints. IC Role / Device Role / Timing Role: Compact 2.8 MHz buck converter enabling 1.0 mm height solution; supports voltage tracking with CPU core rail for coordinated power-up. Use Value: 3 mm × 3 mm QFN footprint saves >25 mm² vs legacy 500 kHz solutions; SS pin enables simultaneous ramp with VDD_CPU for JEDEC-compliant timing. | Use Scenario: Powers microcontroller, RF transceiver, and analog front-end in battery-operated wireless sensor nodes with 10-year target lifetime. IC Role / Device Role / Timing Role: Always-on power management IC providing regulated 3.3 V from primary Li-SOCl₂ cell; manages deep-sleep wake-up sequencing. Use Value: 20 µA quiescent current enables >10 years of operation on 2.4 Ah cell; output discharge prevents false wake-ups from residual VOUT during long sleep intervals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62093RGTR | Fixed 1.8 V output; identical pinout, package, and DCS-Control™ architecture; no FB/SS resistor network required. | Eliminates external feedback divider but lacks output adjustability - suitable only where 1.8 V is system requirement. | Select TPS62093RGTR when fixed 1.8 V simplifies BOM and layout; choose TPS62090RGTR when design requires flexibility across multiple output voltages. |
| TPS62086RGT | 3 A, 2.5–6 V input, 0.8–5.5 V adjustable output; uses voltage-mode control (not DCS-Control™); 2.5 MHz fixed frequency; 17 µA IQ. | Higher light-load efficiency at 1.4 MHz-equivalent operation but slower transient response (~150 µs recovery) and no built-in tracking or hiccup protection. | Choose TPS62086RGT for cost-sensitive, non-critical loads where layout simplicity outweighs transient performance; retain TPS62090RGTR for CPU/core rails demanding sub-50 µs regulation. |
Compared with TPS62093RGTR and TPS62086RGT, the TPS62090RGTR uniquely combines adjustable output, DCS-Control™ transient performance, and integrated voltage tracking - making it the only option among the three capable of serving as both a flexible core supply and a sequenced auxiliary rail in space-constrained portable systems.
Availability
TPS62090RGTR is available at Aetrix Electronics and suitable for notebook computers, solid-state drives, processor core supplies, and battery-powered industrial sensor hubs requiring stable component supply across multi-year production cycles.
Supply support for TPS62090RGTR 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 over 90 years of innovation in high-reliability electronic components.
The TPS6209x product line was designed specifically for high-efficiency, space-constrained battery-powered applications - emphasizing ultra-low quiescent current, fast transient response, and seamless power-mode transitions in portable computing and storage systems.
FAQ
What is the recommended inductor value for TPS62090RGTR when operating at 2.8 MHz?
The TPS62090RGTR datasheet specifies a 0.47 µH inductor for 2.8 MHz operation with 22 µF output capacitance. This value balances ripple current (target ~30% of IOUT), efficiency, and physical size. Using a lower inductance increases ripple and core loss; higher inductance degrades transient response and may cause instability with the DCS-Control™ loop. TI's WEBENCH® design tool validates 0.47 µH as optimal for 3 A, 2.8 MHz, 1.8 V output configurations.
Does TPS62090RGTR require external compensation components?
No, the TPS62090RGTR does not require external compensation components. Its DCS-Control™ architecture integrates all necessary compensation within the IC, enabling stable operation with standard ceramic output capacitors (10–150 µF) and the recommended inductor. This eliminates the need for external RC networks or type-II/type-III compensators - reducing BOM count and layout complexity while ensuring robust performance across temperature and load.
How does the TPS62090RGTR handle undervoltage lockout (UVLO)?
The TPS62090RGTR incorporates an internal undervoltage lockout circuit that disables the device when input voltage falls below 2.2 V (typical), with 200 mV hysteresis. This prevents erratic operation during brown-out conditions or battery depletion. UVLO releases the device once VIN rises above 2.4 V, allowing clean restart. During UVLO, the output is discharged via the 200 Ω internal resistor connected to the VOS pin, ensuring controlled shutdown.
Can the TPS62090RGTR be used in a 100% duty cycle configuration, and what are the practical limits?
Yes, the TPS62090RGTR supports true 100% duty cycle operation to maintain regulation as input voltage approaches output voltage. Practical minimum input is calculated as VIN(min) = VOUT + IOUT × (50 mΩ + LDCR). For example, at 3 A and 1.8 V output with a 10 mΩ inductor, VIN(min) ≈ 1.8 V + 3 A × 60 mΩ = 1.98 V. Below this, output drops linearly - enabling maximum battery utilization in single-cell Li-ion systems down to ~2.0 V.
What is the function of the VOS pin on the TPS62090RGTR, and how should it be connected?
The VOS (Voltage Output Sense) pin on the TPS62090RGTR provides remote output voltage sensing and enables active discharge during shutdown. It must be connected directly to the output capacitor's positive terminal - not to the SW node or inductor - to ensure accurate regulation under load. When the device is disabled, UVLO-triggered, or in thermal shutdown, the internal 200 Ω resistor between VOS and AGND discharges the output, preventing unintended re-powering of downstream circuitry.
TPS62090RGTR 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):
- 2.5V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 6V
- Current - Output:
- 3A
- Frequency - Switching:
- 2.8MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-VQFN (3x3)
TPS62090RGTR FAQ
1.How can I place an order for TPS62090RGTR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62090RGTR 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 TPS62090RGTR reliable?
The price and inventory of TPS62090RGTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62090RGTR is usually 5 days.
3.What payment methods are accepted for TPS62090RGTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62090RGTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62090RGTR?
TPS62090RGTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62090RGTR 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 TPS62090RGTR?
For technical support, including TPS62090RGTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62090RGTR requirements.
6.How does Aetrix verify that TPS62090RGTR is sourced from the original manufacturer or authorized distributors?
All TPS62090RGTR 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 TPS62090RGTR meets industry standards.
7.What is the process for return or replacement of TPS62090RGTR?
All TPS62090RGTR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62090RGTR, 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 TPS62090RGTR part is unused and in its original packaging.
Return procedure for TPS62090RGTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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