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Texas Instruments TPS53313RGER
- Part No.:
- TPS53313RGER
- Manufacturer:
- Texas Instruments
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
TPS53313RGER.pdf
- Description:
- IC REG BUCK ADJ 6A 24VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:847
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Product details
Overview
TPS53313RGER 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, delivering adjustable output from 0.6 V to 0.7 × VIN, and featuring voltage-mode control, programmable 250 kHz–1.5 MHz switching frequency, and support for all-MLCC output designs. It targets point-of-load power delivery in 5-V and 12-V intermediate bus systems.
For engineers reviewing the TPS53313RGER datasheet, TPS53313RGER pinout, TPS53313RGER application, or TPS53313RGER equivalent, key selection considerations include its 24-pin VQFN (4 mm × 4 mm) package, selectable skip mode or forced CCM operation, soft-start time options (1/3/6 ms), peak current limit configuration (4.5/6/9 A), and integrated bootstrap switch enabling single-supply operation without external bias.
Technical Context
The TPS53313RGER implements voltage-mode PWM control with a 14-MHz error amplifier unity-gain bandwidth and type III compensation via the COMP pin. Its RDS(on)-based zero-crossing detection enables precise light-load DCM entry and hiccup-mode overcurrent protection triggered after four consecutive cycles exceeding the configured threshold.
Functional modes-including FCCM or skip mode, soft-start timing, and current limit-are set by resistor and capacitor combinations on the MODE/SS pin, while RT/SYNC supports either internal frequency programming (via resistor-to-GND) or external clock synchronization. The device integrates UVLO (4.23 V rising threshold, 200 mV hysteresis), OVP/UVP (±17% of 0.6 V reference), and thermal shutdown (140 °C typical, 40 °C hysteresis).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 16 V - Supports common intermediate bus rails (5 V, 12 V) without external bias supply. |
| Output Current | Continuous 6 A - Delivers full rated load with thermal derating per RθJA = 44.1 °C/W. |
| Output Voltage Range | 0.6 V to 0.7 × VIN - Enables stable low-voltage POL regulation (e.g., 1.2 V from 12 V input) with ±1% reference accuracy. |
| 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 - Simplifies loop compensation using external type III network on COMP pin. |
| Protection Features | OCP (4.5/6/9 A selectable), OVP/UVP (±17%), OTP (140 °C), UVLO (4.23 V), soft-stop discharge - Ensures robust fault recovery in embedded and computing systems. |
| Package | 24-pin VQFN (4 mm × 4 mm) - Exposed PowerPad enhances thermal performance; RoHS-compliant and lead-free. |
Pinout & Package
The TPS53313RGER is housed in a 4 mm × 4 mm, 24-pin VQFN package with an exposed PowerPad (EP) for thermal dissipation. Pin numbering follows standard top-view orientation with Pin 1 at top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 EN | Enable input | Active-high logic control; internal 800-kΩ pulldown ensures default disable; requires ≥1.8 V to activate. |
| 2 PG | Power good open-drain output | Asserts high when FB voltage is within 83–117% of 0.6 V reference; requires external pull-up for system monitoring. |
| 3–6 VIN | Main input power supply | Four parallel pins reduce IR drop and improve current handling for 4.5–16 V input rail. |
| 7–12 PGND | Power ground return | Six dedicated PGND pins minimize ground bounce and enhance EMI performance in high-current paths. |
| 13–16 SW | Switch node connection | Four parallel SW pins connect to output inductor; critical for minimizing parasitic inductance in high-dI/dt paths. |
| 17 VBST | Bootstrap supply for high-side FET | Requires external capacitor to SW; enables self-biased gate drive without auxiliary supply. |
| 18 BP7 | Bias supply for internal drivers | Provides regulated bias for gate drivers; decoupling improves noise immunity during switching transitions. |
| 19 BP3 | Analog bias supply | Separate low-noise bias for error amplifier and reference circuitry; improves regulation accuracy. |
| 20 AGND | Analog ground reference | Isolated ground for sensitive analog blocks; must be connected to PGND at single point near PowerPad. |
| 21 RT/SYNC | Frequency programming/sync input | Resistor-to-GND sets switching frequency; AC-coupled external clock overrides internal oscillator. |
| 22 MODE/SS | Mode selection and soft-start control | Resistor sets FCCM/skip mode and soft-start time (1/3/6 ms); capacitor selects OCP threshold (4.5/6/9 A). |
| 23 COMP | Error amplifier compensation | Accepts type III network for stability tuning; directly interfaces with feedback loop dynamics. |
| 24 FB | Feedback input | Monitors output via resistive divider; used for regulation, PGOOD, OVP, and UVP detection. |
| EP (PowerPad) | Thermal and electrical ground | Must be soldered to PCB thermal pad; primary path for heat dissipation and low-impedance PGND connection. |
Key Features
| Feature | Design Value |
|---|---|
| All-MLCC output support | Eliminates electrolytic capacitors-reducing board area, improving reliability, and enabling compact, high-reliability POL designs. |
| SmoothPWM™ skip mode | Enables high light-load efficiency (>85% at 100 mA, VIN=12 V, VOUT=1.2 V) without audible noise or output ripple degradation. |
| Integrated bootstrap switch | Removes need for external bootstrap diode/capacitor, simplifying layout and reducing BOM count in space-constrained applications. |
| RDS(on)-based zero-crossing detection | Accurately senses inductor current zero-crossing for seamless CCM-to-DCM transition and precise OCP triggering. |
| Soft-stop output discharge | Internally discharges output during disable via 120-Ω switch-prevents floating voltages and supports sequencing in multi-rail systems. |
Applications
| Server CPU Core Rail | Industrial PLC I/O Module |
|---|---|
Use Scenario: Regulating 1.2 V at up to 6 A for x86 CPU cores from a 12-V intermediate bus in rack-mounted servers. IC Role / Device Role / Timing Role: Primary POL regulator providing tightly regulated, fast-transient power with hiccup-mode fault containment. Use Value: Achieves >90% efficiency at full load and >85% at 100 mA (VIN=12 V), reducing thermal load and enabling dense packaging in air-cooled chassis. | Use Scenario: Generating 3.3 V or 5 V for isolated digital I/O circuits in programmable logic controllers with strict EMC requirements. IC Role / Device Role / Timing Role: Compact, integrated buck converter replacing discrete controller + MOSFET solutions to meet footprint and EMI constraints. Use Value: All-MLCC design eliminates aging-related capacitance drift; skip mode maintains efficiency across variable I/O channel loading (10 mA–5 A). |
| Networking ASIC Power | Medical Imaging FPGA Supply |
Use Scenario: Delivering 0.85 V at 5 A to high-speed networking ASICs from a 5-V backplane rail in switches and routers. IC Role / Device Role / Timing Role: High-accuracy, low-noise POL regulator supporting tight voltage tolerance (±1%) and fast load-step response (<10 µs). Use Value: Voltage-mode control with 14-MHz GBW error amplifier enables stable compensation for wide output capacitor ESR ranges, ensuring reliable startup under pre-biased loads. | Use Scenario: Powering Xilinx Kintex Ultrascale FPGAs in portable ultrasound systems requiring low EMI and high reliability. IC Role / Device Role / Timing Role: Single-chip 6-A solution meeting Class B EMC limits and supporting cold-temperature operation (–40 °C). Use Value: Integrated OVP/UVP and thermal shutdown prevent field failures; RoHS-compliant VQFN package meets medical regulatory requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS53318RGER | Same 24-pin VQFN package and pinout; adds D-CAP2 control mode and improved light-load efficiency via auto-skip. | Preferred for ultra-low-power standby states where <100 µA quiescent current is required. | Select TPS53318RGER if D-CAP2's faster transient response and lower IQ outweigh compatibility with existing TPS53313RGER layouts. |
| 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. | Suitable for cost-sensitive, space-constrained consumer applications where programmability is unnecessary. | Choose MP2315GJ-Z only when footprint reduction and BOM simplicity are prioritized over frequency synchronization and soft-start flexibility. |
Compared with TPS53313RGER, the TPS53318RGER offers enhanced control-loop responsiveness and lower no-load consumption but shares identical thermal and layout constraints, whereas the MP2315GJ-Z trades configurability and thermal margin for minimal size and cost-making it unsuitable for industrial temperature or precision POL use cases.
Availability
TPS53313RGER is available at Aetrix Electronics and suitable for server power delivery, industrial PLCs, networking equipment, and medical imaging systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS53313RGER 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.
The TPS53313RGER belongs to TI's POL (Point-of-Load) synchronous buck regulator product line, designed specifically for high-current, low-voltage power delivery in computing, communications, and industrial applications where integration, thermal performance, and reliability are critical.
FAQ
What is the recommended input voltage range for reliable operation of the TPS53313RGER?
The TPS53313RGER operates reliably across an input voltage range of 4.5 V to 16 V, with a typical UVLO rising threshold of 4.23 V and 200 mV hysteresis. Operation below 4.5 V risks premature shutdown, while exceeding 16 V violates recommended conditions-though absolute maximum rating is 20 V. For optimal efficiency and thermal performance, maintain VIN within this specified range during normal operation of the TPS53313RGER.
How does the MODE/SS pin configure soft-start time and current limit on the TPS53313RGER?
The MODE/SS pin on the TPS53313RGER accepts a resistor to GND to select soft-start time (1 ms for 39 kΩ, 3 ms for 20 kΩ, 6 ms for 10 kΩ) and operation mode (FCCM or skip). Adding a capacitor (0 nF, 2.2 nF, or 10 nF) in parallel sets peak current limit to 6 A, 4.5 A, or 9 A respectively. This dual-function pin enables precise tuning of startup behavior and fault protection without additional components-key for customizing the TPS53313RGER to specific system requirements.
Does the TPS53313RGER support external clock synchronization, and how is it implemented?
Yes, the TPS53313RGER supports external clock synchronization via the RT/SYNC pin. When an AC-coupled external clock signal (250 kHz–1.5 MHz) is applied, the device locks to that frequency and phase, eliminating beat frequencies in multi-regulator systems. If no external signal is present, the pin defaults to internal frequency programming using a resistor to GND. This capability ensures deterministic switching behavior and reduced EMI in synchronized power architectures using the TPS53313RGER.
What thermal management considerations apply to the TPS53313RGER in continuous 6-A operation?
In continuous 6-A operation, the TPS53313RGER requires attention to thermal design due to its RθJA of 44.1 °C/W. The exposed PowerPad must be soldered to a minimum 200 mm² copper thermal pad with ≥4 thermal vias to inner ground planes. Ambient temperature must stay ≤85 °C, and junction temperature must remain ≤125 °C under steady-state load. Derating is necessary above 60 °C ambient; thermal shutdown activates at 140 °C with 40 °C hysteresis. Proper layout is essential for sustained performance of the TPS53313RGER.
Can the TPS53313RGER operate with only ceramic output capacitors, and why is this significant?
Yes, the TPS53313RGER is explicitly designed to support all-MLCC output configurations-no electrolytic or tantalum capacitors required. This is enabled by its voltage-mode control architecture and stable loop compensation, which tolerate the near-zero ESR of MLCCs. Eliminating wet electrolytics improves long-term reliability, reduces board area, avoids capacitance aging, and enhances performance in high-vibration or extended-temperature environments-making the TPS53313RGER ideal for mission-critical POL applications.
TPS53313RGER 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)
TPS53313RGER FAQ
1.How can I place an order for TPS53313RGER through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS53313RGER 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 TPS53313RGER reliable?
The price and inventory of TPS53313RGER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS53313RGER is usually 5 days.
3.What payment methods are accepted for TPS53313RGER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS53313RGER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS53313RGER?
TPS53313RGER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS53313RGER 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 TPS53313RGER?
For technical support, including TPS53313RGER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS53313RGER requirements.
6.How does Aetrix verify that TPS53313RGER is sourced from the original manufacturer or authorized distributors?
All TPS53313RGER 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 TPS53313RGER meets industry standards.
7.What is the process for return or replacement of TPS53313RGER?
All TPS53313RGER units undergo pre-shipment inspection (PSI). If there is an issue with TPS53313RGER, 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 TPS53313RGER part is unused and in its original packaging.
Return procedure for TPS53313RGER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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