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Texas Instruments TPS53314RGFR
- Part No.:
- TPS53314RGFR
- Manufacturer:
- Texas Instruments
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
TPS53314RGFR.pdf
- Description:
- IC REG BUCK ADJ 6A 40VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
TPS53314RGFR 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, 5-V LDO output (VREG), and selectable 250 kHz–1 MHz switching frequency. It operates from 3 V to 15 V input, delivers 0.6 V to 5.5 V output, and supports all-ceramic capacitor designs in server VRMs and notebook CPU core power supplies.
For engineers reviewing the TPS53314RGFR datasheet, TPS53314RGFR pinout, TPS53314RGFR application, or TPS53314RGFR equivalent, key selection considerations include its adaptive on-time control for fast transient response, auto-skip Eco-mode™ for light-load efficiency, internal soft-start timing selection (0.7–5.6 ms), integrated boost switch, and thermal shutdown at 145°C.
Technical Context
The TPS53314RGFR implements D-CAP™ control using output capacitor ESR for current sensing-eliminating external compensation components. Its adaptive on-time architecture modulates tON inversely with VIN and proportionally with VOUT to maintain pseudo-constant frequency across wide input/output ranges.
It features dual-mode operation: auto-skip Eco-mode™ (MODE pin pulled to GND) for >96% peak efficiency at light loads, and forced continuous conduction mode (FCCM) (MODE pin tied to PGOOD) for fixed-frequency noise control. Overcurrent protection uses temperature-compensated RDS(on) sensing via the TRIP pin (10 µA ±0.6 µA, 4700 ppm/°C).
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-enables direct use with 5 V, 12 V, or multi-rail intermediate bus architectures. |
| 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 rail requirements. |
| Switching Frequency | 250 kHz to 1 MHz (8 preset values via RF pin resistor)-allows EMI optimization and inductor size trade-offs. |
| Reference Accuracy | ±1% over –40°C to 85°C-ensures tight output regulation critical for sub-1 V digital supply margins. |
| Shutdown Current | <10 µA-minimizes system standby power loss in always-on computing platforms. |
| Thermal Protection | 145°C shutdown with 10°C hysteresis-prevents damage during sustained overload or poor airflow conditions. |
Pinout & Package
TPS53314RGFR 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 complies with RoHS and lead-free standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 36) | Enable input | Active-high logic control (1.8 V threshold); initiates soft-start sequence when asserted. |
| VFB (Pin 37) | Feedback input | Connects to resistor divider on VOUT; regulates output to 0.6 V reference with ±1% accuracy. |
| PGOOD (Pin 32) | Open-drain status flag | Asserts high after 1-ms delay when VOUT is within +10%/–5% of target; pulls low within 2 µs if out-of-spec. |
| RF (Pin 38) | Frequency select input | Resistor-to-GND or VREG sets one of eight switching frequencies (250 kHz–1 MHz). |
| MODE (Pin 39) | Operation mode select | Pull to GND for auto-skip Eco-mode™; tie to PGOOD for forced CCM-also configures soft-start time (0.7–5.6 ms). |
| TRIP (Pin 35) | Overcurrent threshold set | Sources 10 µA (±0.6 µA) to external resistor; sets valley OCP threshold with 4700 ppm/°C tempco. |
| 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 performance. |
| PGND (Pins 7, 22–28) | Power ground return | Dedicated low-impedance return for high di/dt switching currents; isolated from controller GND (GND1/GND2). |
| VREG (Pin 3) | Integrated 5-V LDO output | Supplies 30 mA max; powers internal circuitry and can bias external components (e.g., pull-up resistors). |
| VBST (Pin 30) | Bootstrap supply | Internally connected to VREG via MOSFET switch; charges bootstrap capacitor for high-side gate drive. |
| LL (Pins 22–28) | Switch node | Connects to inductor; carries full switching waveform (0 V to VIN); requires low-inductance layout. |
| GND1 (Pin 1), GND2 (Pin 4) | Controller grounds | Separate analog/digital and half-bridge grounds minimize noise coupling into feedback and control paths. |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP™ mode control | Eliminates external compensation network by using output capacitor ESR for current sensing-reducing BOM count and design cycle time. |
| Auto-skip Eco-mode™ | Reduces switching frequency under light load to maintain >90% efficiency at 100 mA output-critical for battery-powered notebooks. |
| Adjustable soft-start | Selectable 0.7/1.4/2.8/5.6-ms ramp via MODE pin resistor-prevents inrush current and ensures controlled power-up sequencing. |
| Integrated 5-V LDO (VREG) | Delivers 30 mA with 295 mV dropout at 30 mA-powers internal logic and eliminates need for external bias supply. |
| Pre-charged start-up capability | Supports hot-plug and pre-biased output conditions without reverse current-enables safe insertion into live systems. |
| All-ceramic capacitor support | Stable operation with low-ESR ceramic output caps-reduces board area, improves reliability, and avoids polymer capacitor aging concerns. |
Applications
| Server VRM Core Power | Notebook CPU Core Supply |
|---|---|
Use Scenario: Regulating 0.8–1.3 V at up to 6 A for dual-socket Xeon processors in 1U rack servers with strict thermal constraints. IC Role / Device Role / Timing Role: Primary buck controller managing dynamic load transients <100 ns; provides PGOOD signaling to platform controller hub (PCH) for power sequencing. Use Value: D-CAP™ fast transient response holds output within ±15 mV during 4-A/µs load steps; 96% peak efficiency reduces heat sink size and fan power. | Use Scenario: Delivering 0.95 V @ 4.5 A to Intel Core i7 mobile CPUs in ultrabooks with aggressive thin-profile thermal limits. IC Role / Device Role / Timing Role: Synchronous buck converter with Eco-mode™ enabling >88% efficiency at 50 mA idle current; MODE pin selects FCCM for audio subsystem noise immunity. Use Value: 0.7-ms soft-start prevents GPU reset during cold boot; VREG powers DDR memory termination regulators-reducing component count. |
| Telecom Baseband Power | FPGA I/O Bank Supply |
Use Scenario: Generating 1.8 V @ 3 A for LTE baseband ASICs in remote radio units operating at –40°C to 85°C ambient. IC Role / Device Role / Timing Role: High-reliability point-of-load regulator with UVLO (4.2 V) and thermal shutdown (145°C); PGOOD enables FPGA configuration lockstep. Use Value: ±1% reference accuracy over full temperature range maintains signal integrity margin; QFN package with PowerPAD™ sustains 125°C junction under 200 LFM airflow. | Use Scenario: Providing 3.3 V @ 2.5 A to Xilinx Artix-7 FPGA I/O banks with stringent ripple (<20 mVpp) and sequencing requirements. IC Role / Device Role / Timing Role: Low-noise buck regulator in forced CCM mode; RF pin configured for 500 kHz to avoid interference with high-speed SerDes lanes. Use Value: All-ceramic capacitor support achieves <10 mVpp output ripple; integrated VREG powers I/O bank level shifters-simplifying power tree. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS53353RGT | 8-A output, 3–18 V input, 0.5–5.5 V output, same D-CAP™ control, but larger 5×6 mm 22-pin WQFN package. | Higher current capacity suits next-gen CPUs; lacks integrated VREG-requires external bias supply. | Select when >6 A output or wider input range is required; verify PCB layout compatibility with smaller pin count. |
| ISL95831IRZ | 6-A, 3–25 V input, 0.3–3.5 V output, Intersil Robust Ripple Regulator™ control, no integrated VREG, 40-pin QFN same footprint. | Lower minimum output voltage supports advanced SoCs; different control loop requires re-optimization of ceramic cap selection. | Choose for ultra-low VOUT applications or where Intersil's R3™ control offers better light-load stability than D-CAP™. |
Compared with TPS53314RGFR, TPS53353RGT delivers higher current in a smaller package but removes the integrated 5-V LDO, increasing system-level BOM count; ISL95831IRZ retains the same 40-pin QFN footprint and 6-A rating but targets sub-0.6 V outputs with different control architecture-requiring redesign of compensation and capacitor selection.
Availability
TPS53314RGFR is available at Aetrix Electronics and suitable for server VRMs, notebook CPU core power, and telecom baseband power supplies requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for TPS53314RGFR 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.
The TPS533xx family was designed specifically for high-current, low-voltage point-of-load applications in computing infrastructure-emphasizing fast transient response, minimal external components, and seamless integration with digital power management systems.
FAQ
What is the recommended input capacitor configuration for TPS53314RGFR in a 12-V input, 1.1-V/6-A application?
For TPS53314RGFR operating at 12 V input and 1.1 V/6 A output, TI recommends three 22-µF, 16-V X5R ceramic capacitors (e.g., TDK C3225X5R1C226M) placed near the VIN and PGND pins. This configuration meets RMS current rating (>2.5 A per cap), provides <10 mΩ total impedance at 500 kHz, and ensures stable D-CAP™ loop operation with all-ceramic output capacitors as verified in SLUSAK3 Figure 34.
Does TPS53314RGFR support pre-biased output startup, and how is it enabled?
Yes, TPS53314RGFR supports pre-biased output startup without reverse current flow. This is enabled inherently by its adaptive zero-crossing detection and synchronous rectification control-no external components or configuration is required. As confirmed in SLUSAK3 Figure 20, the device safely ramps the output from a pre-charged 0.8 V to target 1.1 V while keeping the low-side FET off until the high-side gate drive is properly established.
How does the TRIP pin on TPS53314RGFR set overcurrent protection, and what resistor value yields 60-A peak current with typical MOSFETs?
The TRIP pin on TPS53314RGFR sources 10 µA (typical) to set the valley OCP threshold: VOCL = VTRIP/8. For a 60-A peak current with two parallel 3.5-mΩ MOSFETs (RDS(on) = 1.75 mΩ), VOCL ≈ 105 mV → VTRIP = 0.84 V → RTRIP = 0.84 V / 10 µA = 84 kΩ. Use an 84.5-kΩ ±1% resistor from TRIP to GND per Equation 4 in SLUSAK3.
Can TPS53314RGFR operate with only ceramic output capacitors, and what is the minimum required capacitance?
Yes, TPS53314RGFR is explicitly designed for all-ceramic output capacitors. Per SLUSAK3 Section "All Ceramic Output Capacitors", the minimum recommended is 220 µF total (e.g., ten 22-µF, 6.3-V X5R caps) with ≤5 mΩ effective series resistance. This satisfies the stability criterion f0 = 1/(2π·ESR·COUT) < fSW/4 and enables <20-mVpp ripple at 6-A load as shown in Figure 12.
What thermal derating applies to TPS53314RGFR at 85°C ambient with 2 oz copper and 4 thermal vias under the PowerPAD™?
With 2 oz copper, 4 × 12-mil thermal vias to inner ground plane, and no forced airflow, TPS53314RGFR derates to 4.8 A continuous at 85°C ambient per SLUSAK3 Figure 31 thermal imaging data. This is based on measured 125°C junction temperature at 6 A and 25°C ambient, yielding θJA = 35.8°C/W. Derating follows linear interpolation: IOUT = 6 A × (125°C − 85°C)/(125°C − 25°C) = 4.8 A.
TPS53314RGFR 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)
TPS53314RGFR FAQ
1.How can I place an order for TPS53314RGFR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS53314RGFR 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 TPS53314RGFR reliable?
The price and inventory of TPS53314RGFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS53314RGFR is usually 5 days.
3.What payment methods are accepted for TPS53314RGFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS53314RGFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS53314RGFR?
TPS53314RGFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS53314RGFR 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 TPS53314RGFR?
For technical support, including TPS53314RGFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS53314RGFR requirements.
6.How does Aetrix verify that TPS53314RGFR is sourced from the original manufacturer or authorized distributors?
All TPS53314RGFR 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 TPS53314RGFR meets industry standards.
7.What is the process for return or replacement of TPS53314RGFR?
All TPS53314RGFR units undergo pre-shipment inspection (PSI). If there is an issue with TPS53314RGFR, 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 TPS53314RGFR part is unused and in its original packaging.
Return procedure for TPS53314RGFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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