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Texas Instruments TPS53314RGFT
- Part No.:
- TPS53314RGFT
- Manufacturer:
- Texas Instruments
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
TPS53314RGFT.pdf
- Description:
- IC REG BUCK ADJ 6A 40VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:8,000
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Product details
Overview
TPS53314RGFT from Texas Instruments is a D-CAP™-mode, 6-A synchronous step-down regulator with integrated 20-mΩ high-side and 7.5-mΩ low-side MOSFETs, 0.6-V ±1% reference, and 5-V LDO output. It operates from 3 V to 15 V conversion input and 4.5 V to 25 V VDD supply, delivering 0.6 V to 5.5 V output for CPU core power in notebook computers.
For engineers reviewing the TPS53314RGFT datasheet, TPS53314RGFT pinout, TPS53314RGFT application, or TPS53314RGFT equivalent, key selection criteria include D-CAP™ fast transient response, selectable 250 kHz–1 MHz switching frequency via RF resistor, auto-skip Eco-mode™ for light-load efficiency, integrated boost switch, and support for all-ceramic output capacitors without external compensation.
Technical Context
The TPS53314RGFT implements adaptive on-time D-CAP™ control that uses output capacitor ESR for current sensing-eliminating need for external phase compensation. Its pseudo-constant switching frequency is set by an external resistor on the RF pin, with eight discrete values (250 kHz to 970 kHz) selected via connection to GND or VREG.
It features dual-mode operation: auto-skip Eco-mode™ (MODE pin pulled to GND) for high light-load efficiency, or forced continuous conduction mode (FCCM) (MODE pin tied to PGOOD) for fixed-frequency noise control. Soft-start time (0.7 ms to 5.6 ms) and overcurrent limit threshold are both resistor-programmable via MODE and TRIP pins respectively.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 6 A continuous-supports CPU/GPU core rails requiring high-current, low-voltage regulation. |
| Input Voltage Range | 3 V to 15 V conversion input-compatible with 5 V, 12 V intermediate bus architectures in notebooks and servers. |
| Output Voltage Range | 0.6 V to 5.5 V-covers modern processor core (0.6–1.5 V), I/O (1.8–3.3 V), and auxiliary (5 V) rails. |
| Reference Accuracy | ±1% at 0.6 V-enables tight output regulation critical for sub-1 V digital loads with narrow voltage margins. |
| Switching Frequency | Selectable 250 kHz to 970 kHz-allows optimization of size (higher fSW → smaller inductor/capacitor) vs. efficiency (lower fSW → lower switching loss). |
| Shutdown Current | <10 µA-minimizes battery drain in always-on system states like S3/S4 sleep modes. |
| LDO Output | 5 V ±5%, 30 mA-powers internal circuitry and can supply bias for external gate drivers or level shifters. |
Pinout & Package
TPS53314RGFT is housed in a 5 mm × 7 mm, 40-pin QFN package with exposed thermal pad (PowerPAD™). The package supports high-power dissipation via PCB vias to internal ground planes and is rated for –40°C to 85°C ambient operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 36) | Enable input | Active-high logic control; ≥1.8 V enables regulation, ≤0.6 V disables with <10 µA shutdown current. |
| VIN (Pins 13, 29, 31, 33, 34) | Main power input | High-current path for 3–15 V conversion input; multiple pins reduce IR drop and improve thermal spreading. |
| LL (Pins 22–28) | Power switch node | Connection to inductor and low-side MOSFET source; requires low-inductance layout to minimize switching noise and shoot-through risk. |
| PGND (Pins 7–12, 14, 15, 23–28) | Power ground | Dedicated return path for high di/dt currents; isolated from controller ground (GND1/GND2) to prevent noise coupling into feedback. |
| VFB (Pin 37) | Feedback input | Connects to resistor divider from VOUT; senses 0.6 V reference point-accuracy directly determines output voltage tolerance. |
| RF (Pin 38) | Frequency select | Resistor-to-GND or VREG sets one of eight factory-trimmed switching frequencies-no oscillator component required. |
| MODE (Pin 39) | Mode control | Pull to GND for Eco-mode™ (variable fSW); tie to PGOOD for FCCM-also programs soft-start time (0.7–5.6 ms) via RMODE. |
| TRIP (Pin 35) | OCP threshold | Sources 10 µA (4700 ppm/°C tempco) to set valley current limit; enables accurate RDS(on)-based sensing without sense resistor. |
| PGOOD (Pin 32) | Open-drain status | Asserts after 1-ms delay when VOUT is within +10%/–5% of target; deasserts within 2 µs if outside +15%/–10%-supports system sequencing. |
| VBST (Pin 30) | Bootstrap supply | Internally connected to VREG via integrated switch; charges bootstrap capacitor to drive high-side MOSFET gate above VIN. |
| VREG (Pin 3) | Integrated LDO | 5-V, 30-mA output powers internal logic and can bias external components-reduces need for auxiliary regulators. |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP™ control architecture | Uses output capacitor ESR for current sensing-eliminates external compensation network and reduces BOM count by ≥3 components. |
| Auto-skip Eco-mode™ | Reduces switching frequency under light load-achieves >85% efficiency at 100 mA output while maintaining <10 µA quiescent current. |
| Integrated power MOSFETs | 20-mΩ high-side + 7.5-mΩ low-side FETs-enable 6-A output in compact 5 mm × 7 mm QFN without discrete driver or FET layout complexity. |
| Programmable soft-start | Four selectable times (0.7/1.4/2.8/5.6 ms) via MODE pin resistor-prevents inrush current and ensures monotonic VOUT ramp during power-up. |
| All-ceramic capacitor support | Stable operation with zero-ESR ceramic output caps-enables smaller, lower-profile designs versus electrolytic/tantalum alternatives. |
Applications
| Notebook CPU Core Power | Server VR12.x Point-of-Load |
|---|---|
Use Scenario: Regulating 0.85 V @ 5 A for Intel Core i7 mobile processor under dynamic load steps up to 3 A/µs. IC Role / Device Role / Timing Role: Primary synchronous buck controller providing fast transient response via D-CAP™ architecture and integrated MOSFETs. Use Value: Achieves <15 mV output deviation during 3-A load step-meets Intel VRD12.5 voltage positioning spec without external compensation. | Use Scenario: Delivering 1.2 V @ 6 A to Xeon E5 memory controller in 1U rack server with strict airflow and thermal constraints. IC Role / Device Role / Timing Role: High-efficiency, thermally optimized POL regulator using PowerPAD™ QFN and ceramic output caps. Use Value: Maintains >92% peak efficiency at full load with junction temperature ≤115°C-enables fanless operation in dense compute modules. |
| Telecom DSP Power Supply | Industrial FPGA Core Rail |
Use Scenario: Generating 1.0 V @ 4 A for TI C6678 multicore DSP in wireless baseband unit with 48 V intermediate bus. IC Role / Device Role / Timing Role: Input-filtered buck converter accepting 12 V derived from 48 V DC/DC, operating in FCCM for predictable EMI profile. Use Value: Fixed 500 kHz switching (RF open) simplifies EMI filter design and meets EN55022 Class B conducted emissions limits. | Use Scenario: Powering Xilinx Kintex-7 FPGA core (0.95 V, 5 A) in programmable logic controller with wide ambient temperature range (–40°C to 85°C). IC Role / Device Role / Timing Role: Robust, temperature-compensated regulator with 4700 ppm/°C TRIP current slope for stable OCP across industrial temp range. Use Value: Prevents false overcurrent trips at cold start while maintaining accurate current limiting at 85°C-ensures reliable field operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS53355RGFT | Higher 30-A capability, dual-phase, 0.5-V to 2.5-V output range, supports VR12.5/VR13 protocols. | Targeted at high-end desktop/server CPUs-not suitable for space-constrained notebook or single-rail embedded use. | Choose only when >6 A output or multi-phase coordination is required; not a drop-in replacement. |
| MP2315DJ-LF-Z | Monolithic 6-A buck, 4.5–28 V input, 0.8–6 V output, no integrated LDO, uses constant-on-time control. | Lacks VREG LDO and D-CAP™ ESR-sensing-requires external compensation and separate bias rail for gate drivers. | Select when cost sensitivity outweighs design simplicity; expect longer development time for loop stability validation. |
Compared with TPS53314RGFT, TPS53355RGFT scales output current and adds protocol support but increases size and complexity, while MP2315DJ-LF-Z reduces cost at the expense of integrated features and ease of use-making TPS53314RGFT optimal for mid-power, space-constrained, single-rail applications demanding minimal external components.
Availability
TPS53314RGFT is available at Aetrix Electronics and suitable for notebook computers, server point-of-load systems, and telecom equipment requiring stable component supply, long-term manufacturability, and automotive-grade reliability screening.
Supply support for TPS53314RGFT 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 broad industrial, automotive, and computing product portfolios.
The TPS533xx family was designed specifically for high-efficiency, low-voltage, high-current DC-DC conversion in space-constrained computing platforms-emphasizing integration, fast transient response, and simplified design through D-CAP™ control.
FAQ
What is the maximum recommended input voltage for TPS53314RGFT?
The absolute maximum VIN rating for TPS53314RGFT is 17 V, but the recommended operating range is 3 V to 15 V for power conversion. Exceeding 15 V may cause premature device stress or reduced lifetime. The VDD supply supports up to 25 V, but this is separate from the main VIN path used for switching regulation.
Does TPS53314RGFT require external compensation components?
No, TPS53314RGFT does not require external compensation components due to its D-CAP™ control architecture, which uses the output capacitor's ESR for current sensing and inherent loop stabilization. This eliminates the need for traditional Type II or III compensation networks-reducing BOM count and layout complexity.
How is the overcurrent protection threshold set on TPS53314RGFT?
The overcurrent protection threshold on TPS53314RGFT is set via the TRIP pin, which sources a temperature-compensated 10 µA current (4700 ppm/°C) into an external resistor to ground. The resulting voltage (VTRIP) determines the valley inductor current limit, calculated as VOCL = VTRIP / 8, enabling accurate RDS(on)-based sensing without a dedicated sense resistor.
Can TPS53314RGFT operate with only ceramic output capacitors?
Yes, TPS53314RGFT fully supports all-ceramic output capacitors thanks to its D-CAP™ architecture and internal ramp compensation. The device maintains stability without requiring bulk electrolytic or polymer capacitors-enabling smaller, more reliable, and lower-profile power solutions ideal for thin-profile notebooks and compact embedded systems.
What is the function of the VREG pin on TPS53314RGFT?
The VREG pin on TPS53314RGFT provides a regulated 5-V output capable of supplying up to 30 mA. It powers internal control circuitry and can also bias external components such as gate drivers, level shifters, or monitoring ICs-eliminating the need for a separate LDO in many designs and simplifying system power architecture.
TPS53314RGFT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- D-CAP™, Eco-Mode™
- Package/Case:
- 40-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):
- 15V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 6A
- Frequency - Switching:
- 250kHz ~ 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-VQFN (7x5)
TPS53314RGFT FAQ
1.How can I place an order for TPS53314RGFT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS53314RGFT 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 TPS53314RGFT reliable?
The price and inventory of TPS53314RGFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS53314RGFT is usually 5 days.
3.What payment methods are accepted for TPS53314RGFT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS53314RGFT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS53314RGFT?
TPS53314RGFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS53314RGFT 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 TPS53314RGFT?
For technical support, including TPS53314RGFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS53314RGFT requirements.
6.How does Aetrix verify that TPS53314RGFT is sourced from the original manufacturer or authorized distributors?
All TPS53314RGFT 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 TPS53314RGFT meets industry standards.
7.What is the process for return or replacement of TPS53314RGFT?
All TPS53314RGFT units undergo pre-shipment inspection (PSI). If there is an issue with TPS53314RGFT, 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 TPS53314RGFT part is unused and in its original packaging.
Return procedure for TPS53314RGFT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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