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Texas Instruments TPS53313RGET
- Part No.:
- TPS53313RGET
- Manufacturer:
- Texas Instruments
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
TPS53313RGET.pdf
- Description:
- IC REG BUCK ADJ 6A 24VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:398
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Product details
Overview
TPS53313RGET from Texas Instruments is a 6-A synchronous step-down DC/DC regulator with integrated high- and low-side N-channel MOSFETs, operating from 4.5 V to 16 V input and delivering adjustable output from 0.6 V to 0.7 × VIN. It features voltage-mode control, programmable 250 kHz–1.5 MHz switching frequency, selectable skip mode or forced CCM, and supports all-MLCC output configurations for POL applications in computing and embedded systems.
For engineers reviewing the TPS53313RGET datasheet, TPS53313RGET pinout, TPS53313RGET application, or TPS53313RGET equivalent, key selection considerations include its 24-pin VQFN (4 mm × 4 mm) package, RDS(on)-based overcurrent protection, soft-stop output discharge, open-drain PGOOD signaling, and MODE/SS-configurable soft-start time (1/3/6 ms) and peak current limit (4.5/6/9 A).
Technical Context
The TPS53313RGET implements voltage-mode PWM control with an internal 0.6-V ±1% precision reference and 14-MHz unity-gain bandwidth error amplifier. Its RDS(on) sensing enables zero-crossing detection and cycle-by-cycle overcurrent protection on both high- and low-side FETs, with hiccup-mode fault recovery.
Functional modes are configured via the MODE/SS pin: resistor-only connections select FCCM or skip mode with fixed soft-start times (1/3/6 ms), while adding capacitors (0/2.2/10 nF) sets peak current limits at 6/4.5/9 A respectively. The RT/SYNC pin supports either resistor-programmed internal oscillation or external clock synchronization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input voltage range | 4.5 V to 16 V - supports common 5-V and 12-V intermediate bus rails without auxiliary bias supply. |
| Output current | Continuous 6 A - delivers full rated load with thermal derating managed by 44.1°C/W θJA in VQFN package. |
| Output voltage range | 0.6 V to 0.7 × VIN - enables 1.2-V, 1.8-V, 3.3-V, and other low-voltage POL rails from 5-V or 12-V inputs. |
| Switching frequency | 250 kHz to 1.5 MHz - programmable via RT/SYNC resistor; higher frequencies allow smaller magnetics and faster transient response. |
| Control architecture | Voltage-mode PWM - provides stable loop compensation using external Type III network on COMP pin. |
| Protection features | OCP (4.5/6/9 A selectable), OVP/UVP (±17% FB threshold), OTP (140°C shutdown), and hiccup-mode recovery - ensures robust operation under fault conditions. |
| Power good signal | Open-drain PG with 83–117% VREF window and 200-µs startup delay - enables reliable system power sequencing and monitoring. |
Pinout & Package
TPS53313RGET is housed in a thermally enhanced 4 mm × 4 mm, 24-pin VQFN package (RGE) with exposed PowerPad for improved heat dissipation. Pin functions are validated per TI SLUSAS8A datasheet Rev. October 2016.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 EN | Enable input | Active-high logic control with 1.8-V threshold and 800-kΩ internal pulldown - enables precise power sequencing and standby current of 58 µA. |
| 2 PG | Power good output | Open-drain flag indicating regulated output; asserts high when FB is within 83–117% of 0.6 V reference. |
| 3–6 VIN | Main input supply | Four parallel pins for low-impedance connection to 4.5–16 V input rail and gate driver supply. |
| 7–12 PGND | Power ground | Six dedicated ground terminals minimize ground bounce and improve current handling for 6-A output. |
| 13–16 SW | Switch node | Four parallel connections to inductor and integrated FETs - reduces trace inductance and switching losses. |
| 17 VBST | Bootstrap supply | High-side gate driver supply; requires capacitor between VBST and SW for charge pump operation. |
| 18 BP7 | Bias supply (7 V) | Internal 7-V LDO output for analog circuitry - decoupled externally to stabilize reference and control blocks. |
| 19 BP3 | Bias supply (3.3 V) | Internal 3.3-V LDO output for analog functions - separate from BP7 to reduce noise coupling into feedback path. |
| 20 AGND | Analog ground | Reference ground for FB, COMP, and MODE/SS - must be connected to PGND at single point near PowerPad. |
| 21 RT/SYNC | Frequency control | Resistor-to-GND sets switching frequency (250 kHz–1.5 MHz); AC-coupled external clock overrides internal oscillator. |
| 22 MODE/SS | Mode & soft-start | Configures FCCM/skip mode, soft-start time (1/3/6 ms), and peak current limit (4.5/6/9 A) via resistor/capacitor network. |
| 23 COMP | Error amplifier compensation | Type III compensation node - external RC network stabilizes voltage-mode loop with 14-MHz UGBW amplifier. |
| 24 FB | Feedback input | Monitors output via resistive divider; sets regulation point and triggers OVP/UVP/PG based on 0.6-V reference. |
Key Features
| Feature | Design Value |
|---|---|
| All-MLCC output support | Eliminates electrolytic capacitors - reduces board area, improves reliability, and enables compact, low-profile POL designs. |
| Soft-stop output discharge | Internal 120-Ω switch discharges VOUT when EN = LOW - prevents back-powering and ensures clean power-down sequencing. |
| RDS(on)-based current sensing | Zero external sense resistor required - lowers BOM cost, PCB area, and conduction loss while enabling accurate overcurrent protection. |
| Selectable light-load efficiency mode | Skip mode reduces switching loss at light loads; FCCM maintains fixed frequency for EMI-sensitive applications. |
| Integrated bootstrap switch | On-chip high-side gate driver charge pump - removes need for external bootstrap diode and simplifies layout. |
| Pre-biased startup capability | Supports powering up into pre-charged output rails - avoids output voltage undershoot and enables hot-swap compatibility. |
Applications
| Server VR12 Core Rail | Industrial PLC I/O Module |
|---|---|
|
Use Scenario: Providing 1.2-V/6-A core supply to multi-core x86 processors in 1U rack servers with strict thermal and space constraints. IC Role / Device Role / Timing Role: Primary POL regulator converting 12-V intermediate bus to CPU core voltage; manages dynamic load transients up to 3-A/µs. Use Value: SmoothPWM™ skip mode maintains >85% efficiency at 100-mA load while voltage-mode control ensures <±1% output accuracy across line/load/temperature. |
Use Scenario: Generating isolated 3.3-V/3-A logic rail for digital I/O expansion modules in harsh industrial environments. IC Role / Device Role / Timing Role: Main DC/DC converter supplying FPGA, microcontroller, and interface ICs; operates in FCCM for predictable EMI profile. Use Value: Integrated OCP, OTP, and hiccup-mode recovery enable unattended operation; 4.5–16-V input range accommodates wide industrial input tolerances. |
| Networking ASIC Power | Automotive Infotainment SoC |
|
Use Scenario: Delivering 0.85-V/4-A supply to high-speed Ethernet switch ASICs requiring ultra-low noise and fast transient response. IC Role / Device Role / Timing Role: Secondary POL regulator downstream of 5-V bus; uses 1-MHz switching and Type III compensation for bandwidth >200 kHz. Use Value: RDS(on) current sensing eliminates sense resistor error; soft-start time configurable to 1 ms for rapid system boot-up. |
Use Scenario: Powering infotainment application processor (e.g., i.MX8) with 1.0-V/5-A core rail in automotive head units with 12-V battery input. IC Role / Device Role / Timing Role: High-efficiency buck converter supporting cold-crank (4.5-V) and load-dump (16-V) conditions per ISO 7637-2. Use Value: Input UVLO (4.23 V) with 200-mV hysteresis prevents brownout resets; PGOOD signal interfaces directly with MCU reset controller. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS53318RGET | Same 24-pin VQFN package and pinout; adds D-CAP+ control mode and 0.6-V reference with ±0.5% tolerance - tighter regulation but no skip mode. | Preferred for high-precision, low-noise applications where constant-frequency FCCM is mandatory and light-load efficiency is secondary. | Select TPS53318RGET when ±0.5% output accuracy and sub-10-µs transient response outweigh the need for skip-mode efficiency. |
| MP2315GJ-Z | Monolithic 6-A buck in 10-pin 3 mm × 3 mm QFN; fixed 500-kHz frequency, no RT/SYNC or MODE/SS configurability; 4.5–18-V input. | Suitable for cost-sensitive, space-constrained designs where programmability and advanced protection (hiccup, soft-stop) are not required. | Choose MP2315GJ-Z only for simplified, fixed-frequency applications lacking need for soft-start adjustment, current limit tuning, or external sync. |
Compared with TPS53313RGET, TPS53318RGET offers superior output accuracy and transient performance but sacrifices skip-mode efficiency and flexibility; MP2315GJ-Z trades configurability and protection depth for smaller footprint and lower unit cost - making TPS53313RGET the balanced choice for design-sensitive POL systems requiring both efficiency and robustness.
Availability
TPS53313RGET is available at Aetrix Electronics and suitable for server VR12 core rails, industrial PLC I/O modules, networking ASIC supplies, and automotive infotainment SoC power delivery requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for TPS53313RGET 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 and automotive-grade reliability.
The TPS533xx family was designed specifically for high-current, low-voltage point-of-load applications in computing, networking, and industrial systems - emphasizing integration, thermal performance, and flexible configuration without external sense resistors.
FAQ
What input voltage range does the TPS53313RGET support?
The TPS53313RGET supports an input voltage range of 4.5 V to 16 V, covering standard 5-V and 12-V intermediate bus rails. Its internal UVLO has a rising threshold of 4.23 V with 200-mV hysteresis, ensuring reliable startup and brownout immunity. The device requires no auxiliary bias supply, simplifying system power architecture.
How is the output voltage set on the TPS53313RGET?
The TPS53313RGET uses resistor-divider feedback on the FB pin to set output voltage, referenced to an internal 0.6-V ±1% precision bandgap. The output is adjustable from 0.6 V up to 0.7 × VIN - for example, 1.2 V from a 12-V input or 3.3 V from a 5-V input. External resistor values determine regulation point, and FB monitors OVP/UVP/PG status.
Does the TPS53313RGET require an external current sense resistor?
No, the TPS53313RGET uses RDS(on) sensing on its integrated high- and low-side N-channel MOSFETs for overcurrent protection and zero-crossing detection. This eliminates the need for an external sense resistor, reducing BOM cost, PCB area, and power loss - while maintaining accurate 4.5/6/9-A peak current limit thresholds configurable via MODE/SS pin.
What are the soft-start time options for the TPS53313RGET?
The TPS53313RGET offers three factory-selectable soft-start times - 1 ms, 3 ms, and 6 ms - configured by connecting a resistor (39 kΩ, 20 kΩ, or 10 kΩ) from the MODE/SS pin to GND. These settings apply in both FCCM and skip modes, and are independent of any capacitor added for current limit selection - enabling precise inrush current control during power-up.
Can the TPS53313RGET synchronize to an external clock?
Yes, the TPS53313RGET can synchronize to an external clock via the RT/SYNC pin. When an AC-coupled external clock signal is applied, the device locks to that frequency; if no external signal is present, it defaults to internal resistor-programmed operation (250 kHz–1.5 MHz). This feature supports EMI reduction through frequency dithering or system-level clock alignment.
TPS53313RGET Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SmoothPWM™
- Package/Case:
- 24-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):
- 4.5V
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 11.2V
- Current - Output:
- 6A
- Frequency - Switching:
- 250kHz ~ 1.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-VQFN (4x4)
TPS53313RGET FAQ
1.How can I place an order for TPS53313RGET through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS53313RGET 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 TPS53313RGET reliable?
The price and inventory of TPS53313RGET are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS53313RGET is usually 5 days.
3.What payment methods are accepted for TPS53313RGET?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS53313RGET transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS53313RGET?
TPS53313RGET orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS53313RGET 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 TPS53313RGET?
For technical support, including TPS53313RGET datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS53313RGET requirements.
6.How does Aetrix verify that TPS53313RGET is sourced from the original manufacturer or authorized distributors?
All TPS53313RGET 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 TPS53313RGET meets industry standards.
7.What is the process for return or replacement of TPS53313RGET?
All TPS53313RGET units undergo pre-shipment inspection (PSI). If there is an issue with TPS53313RGET, 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 TPS53313RGET part is unused and in its original packaging.
Return procedure for TPS53313RGET:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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