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Texas Instruments TPS54KC23RZRR
- Part No.:
- TPS54KC23RZRR
- Manufacturer:
- Texas Instruments
- Package:
- 16-PowerWFQFN
- Datasheet:
-
TPS54KC23RZRR.pdf
- Description:
- IC REG BUCK ADJ 30A 16WQFN-FCRLF
- Quantity:
- Payment:
- Shipping:
Inventory:4,975
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Product details
Overview
TPS54KC23RZRR from Texas Instruments is a 4V–16V input, 30A synchronous buck converter with D-CAP4 control, differential remote sense, and integrated 5.8mΩ/2.3mΩ MOSFETs in a 3.0mm × 3.5mm WQFN-HR package. It delivers ±0.5% reference accuracy over –40°C to +125°C and supports 1.0V–5.5V output voltage for high-density server point-of-load regulation.
For engineers reviewing the TPS54KC23RZRR datasheet, TPS54KC23RZRR pinout, TPS54KC23RZRR application, or TPS54KC23RZRR equivalent, key selection criteria include its valley overcurrent protection with RILIM programming, selectable 800/1100/1400kHz switching frequency, Eco-mode/FCCM operation, prebiased start-up, and open-drain power-good output for system sequencing.
Technical Context
The TPS54KC23RZRR implements adaptive on-time D-CAP4 control-eliminating external compensation while enabling ultra-fast load-step response across 1.0V–5.5V outputs. Its emulated current sensing and valley-current limiting architecture provides stable all-ceramic capacitor operation without loop tuning.
Differential remote sensing (GOSNS/VOSNS±) corrects for PCB IR drop at the load, while programmable soft-start (via SS capacitor), MSEL-configurable frequency/FCCM-skip mode, and internal 3.0V LDO (with 3.1V–5.3V external VCC bias support) enable precise power-rail control in thermally constrained data center environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4V to 16V - supports 5V, 12V intermediate bus architectures common in rack servers and baseband units. |
| Output Current | 30A continuous - enables single-chip 1V/3.3V/5V POL conversion for ASICs, FPGAs, and memory subsystems. |
| Reference Accuracy | ±0.5% over –40°C to +125°C - ensures tight output regulation under full thermal operating range without calibration. |
| Switching Frequency | Selectable 800/1100/1400kHz - balances efficiency vs. size: higher frequencies reduce inductor volume; lower frequencies improve light-load efficiency in FCCM. |
| MOSFET RDS(on) | 5.8mΩ (HS), 2.3mΩ (LS) - minimizes conduction loss at 30A, enabling >94% peak efficiency at 1V/30A (VIN=12V). |
| Remote Sense | Differential (GOSNS/VOSNS±) - compensates for up to ±100mV PCB voltage drop between IC and load, critical for sub-1V rail accuracy. |
| Protection Features | Valley OCL (programmable via RILIM), OVP/UVP, thermal shutdown (150°C), and open-drain PG - enables autonomous fault handling and safe system power sequencing. |
Pinout & Package
TPS54KC23RZRR uses a 16-pin WQFN-FCRLF (RZR) package measuring 3.0mm × 3.5mm with exposed thermal pad (PGND-connected). The layout optimizes thermal dissipation and EMI performance via multiple PGND pins (pins 4, 8, 16) and symmetric VIN inputs (pins 3, 9).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Enable input | Logic-level control (1.23V rising threshold); internal 1MΩ pull-down allows default disable; supports power sequencing. |
| FB | Feedback input | Connects to resistor divider tap near load; regulates output to 500mV reference; enables 1.0V–5.5V output programming. |
| GOSNS / VOSNS± | Differential remote sense inputs | GOSNS (pin 13) and VOSNS+/- (pins 15/16 per functional diagram) form Kelvin connection to load ground and output, correcting for trace resistance. |
| ILIM | Current limit set | Resistor-to-AGND sets valley OCL threshold (27.8–30.6A typical); enables precise overcurrent margining for system reliability. |
| MSEL | Multi-function select | Resistor-to-AGND configures switching frequency (800/1100/1400kHz), FCCM/skip mode, and PWM ramp slope. |
| PG | Power-good output | Open-drain signal asserts high when FB is within ±11% of VREF; 1.3ms startup delay and 4–6.2µs fault response enable robust sequencing. |
| SS | Soft-start control | Capacitor-to-AGND sets ramp time; minimum 10nF required to prevent overshoot; supports prebiased start-up. |
| VIN (3,9) | Main power input | Dual input pins reduce high-current path impedance; require local ceramic decoupling to PGND for stability and EMI suppression. |
| PGND (4,8,16) | Power ground | Thermally enhanced ground return for low-side FET; requires multiple vias directly beneath for <5.1°C/W junction-to-board thermal resistance. |
| VCC | Bias supply | Internal 3.0V LDO output; accepts 3.1V–5.3V external bias to bypass LDO losses and improve full-load efficiency. |
| SW | Switch node | High-frequency switching output; connects to power inductor; includes internal discharge resistor (100Ω) for safe shutdown. |
| BOOT | High-side gate drive | Bootstrap supply for HS FET driver; requires ceramic capacitor from BOOT to SW to sustain gate voltage during duty cycles >90%. |
| AGND | Analog ground | Reference for feedback, reference, and control circuits; must be isolated from PGND except at single-point star ground. |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP4 Adaptive On-Time Control | Eliminates external compensation components while delivering <1µs load-step response across 1.0V–5.5V outputs - simplifies design and improves transient immunity. |
| Differential Remote Sensing | Corrects for up to ±100mV IR drop between IC and load - maintains ±0.5% output accuracy at the point-of-load, essential for sub-1V ASIC rails. |
| Programmable Valley Overcurrent Limit | RILIM resistor sets precise OCL threshold (27.8–30.6A) - enables margining against worst-case load conditions without derating. |
| Selectably Optimized Efficiency Modes | FCCM ensures constant frequency for EMI filtering; Eco-mode skips pulses at light load - achieves >90% efficiency down to 1A at 1V/12VIN. |
| Prebiased Start-Up Support | Allows safe turn-on into precharged output capacitors - prevents reverse current flow and protects downstream loads during hot-swap or multi-rail sequencing. |
| Integrated High-Performance Power Stage | 5.8mΩ/2.3mΩ MOSFETs in thermally optimized 3.0×3.5mm WQFN - delivers 30A with <13.2°C/W junction-to-board thermal resistance on 6-layer PCB. |
Applications
| Rack Server VR12/VR13 Core Rail | Baseband Unit (BBU) FPGA Supply |
|---|---|
Use Scenario: Provides 0.8V/30A core voltage to high-performance CPUs and accelerators in 1U/2U rack servers with strict thermal envelope limits. IC Role / Device Role / Timing Role: Primary point-of-load regulator with differential remote sense, managing dynamic current steps up to 20A/µs while maintaining <±10mV output deviation. Use Value: Enables single-chip 30A solution with <94% peak efficiency and <13.2°C/W thermal resistance - reduces board area by 40% vs. dual-phase alternatives. | Use Scenario: Powers Xilinx or Intel FPGAs in 5G wireless baseband units requiring tightly regulated 1.0V/25A with fast transient response. IC Role / Device Role / Timing Role: Synchronous buck controller with D-CAP4 modulation, delivering <1µs load-step recovery and ±0.5% DC accuracy over –40°C to +85°C ambient. Use Value: Eliminates external compensation network and supports all-ceramic output caps - cuts BOM count by 3–5 parts and improves reliability in harsh telecom environments. |
| Data Center Switch ASIC Supply | Industrial PC GPU/Co-Processor Rail |
Use Scenario: Delivers 1.2V/30A to switch fabric ASICs in top-of-rack switches where space, efficiency, and thermal management are critical. IC Role / Device Role / Timing Role: High-current POL regulator with programmable soft-start and power-good signaling for coordinated power-up of multi-rail systems. Use Value: MSEL-configurable 1.4MHz operation shrinks inductor size by 35% vs. 800kHz; remote sense ensures <±5mV regulation at ASIC die ball. | Use Scenario: Supplies 3.3V/20A to GPU or AI co-processors in ruggedized industrial PCs deployed in factory automation systems. IC Role / Device Role / Timing Role: Robust buck converter with valley OCL, thermal shutdown, and undervoltage lockout - withstands wide input transients and temperature swings. Use Value: Integrated 5.8mΩ/2.3mΩ MOSFETs and 3.0×3.5mm WQFN package achieve >92% efficiency at full load while fitting within 12mm² footprint constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS54KB22RZRR | 25A rated; identical pinout and feature set but lower current capability; shares same RZR package and MSEL configuration logic. | Suitable for 20–25A loads where margin or thermal headroom is acceptable; not recommended for sustained 30A operation. | Select TPS54KB22RZRR only if output current requirement is ≤25A and board layout reuse is prioritized over maximum density. |
| MP2964GQKT-Z | Monolithic 30A buck with PMBus interface, digital telemetry, and 0.5% reference; 4mm × 4mm QFN-24 package; no remote sense pins. | Enables real-time monitoring and dynamic voltage scaling in programmable power systems; lacks differential remote sense for sub-1V accuracy. | Choose MP2964GQKT-Z when telemetry, firmware configurability, or PMBus compliance is required - not for cost-sensitive or space-constrained fixed-function designs. |
Compared with TPS54KB22RZRR and MP2964GQKT-Z, the TPS54KC23RZRR uniquely combines 30A capacity, differential remote sense, D-CAP4 ultra-fast transient response, and 3.0×3.5mm footprint - making it optimal for thermally dense, high-accuracy server and telecom POL applications where analog simplicity and minimal BOM are critical.
Availability
TPS54KC23RZRR is available at Aetrix Electronics and suitable for rack server VR12/VR13 core rails, 5G baseband unit FPGA supplies, and data center switch ASIC power delivery requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.
Supply support for TPS54KC23RZRR 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 TPS54KC23RZRR belongs to TI's D-CAP4 synchronous buck converter family, engineered specifically for high-current, low-voltage point-of-load regulation in space-constrained data center, telecom, and industrial computing applications.
FAQ
What is the maximum continuous output current supported by the TPS54KC23RZRR?
The TPS54KC23RZRR supports 30A continuous output current under recommended operating conditions (TJ ≤ 125°C, proper PCB thermal design). Peak inductor current capability is 45A. Derating is required above 85°C ambient or with insufficient copper area; thermal performance depends on layout, airflow, and number of PGND vias.
Does the TPS54KC23RZRR require external compensation components?
No, the TPS54KC23RZRR does not require external compensation components. Its D-CAP4 adaptive on-time control architecture eliminates the need for loop compensation networks, enabling stable operation with all-ceramic output capacitors and reducing BOM count by up to five passive components compared to voltage-mode controllers.
How is the switching frequency configured on the TPS54KC23RZRR?
The switching frequency of the TPS54KC23RZRR is configured using a resistor from the MSEL pin to AGND. A 10.5kΩ resistor selects 800kHz, 24.9kΩ selects 1.1MHz, and 48.7kΩ selects 1.4MHz - all in forced continuous conduction mode (FCCM). Resistor tolerance must be ±1% for accurate frequency setting.
Can the TPS54KC23RZRR operate with a precharged output capacitor?
Yes, the TPS54KC23RZRR supports prebiased start-up. When enabled, it safely ramps the output from an initial voltage without forcing reverse current through the low-side MOSFET - protecting downstream loads during hot-swap or multi-rail sequencing events where output capacitance may already be charged.
What protection features are integrated into the TPS54KC23RZRR?
The TPS54KC23RZRR integrates valley overcurrent protection (OCL) with programmable trip point via RILIM, input undervoltage lockout (UVLO), output overvoltage/undervoltage protection (OVP/UVP), thermal shutdown (150°C), and open-drain power-good signaling. All protections trigger autonomous shutdown or flagging without host intervention.
TPS54KC23RZRR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-PowerWFQFN
- 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):
- 4V
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 0.5V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 30A
- Frequency - Switching:
- 800kHz, 1.1MHz, 1.4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 16-WQFN-FCRLF (3x3.5)
TPS54KC23RZRR FAQ
1.How can I place an order for TPS54KC23RZRR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54KC23RZRR 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 TPS54KC23RZRR reliable?
The price and inventory of TPS54KC23RZRR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54KC23RZRR is usually 5 days.
3.What payment methods are accepted for TPS54KC23RZRR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54KC23RZRR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54KC23RZRR?
TPS54KC23RZRR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54KC23RZRR 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 TPS54KC23RZRR?
For technical support, including TPS54KC23RZRR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54KC23RZRR requirements.
6.How does Aetrix verify that TPS54KC23RZRR is sourced from the original manufacturer or authorized distributors?
All TPS54KC23RZRR 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 TPS54KC23RZRR meets industry standards.
7.What is the process for return or replacement of TPS54KC23RZRR?
All TPS54KC23RZRR units undergo pre-shipment inspection (PSI). If there is an issue with TPS54KC23RZRR, 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 TPS54KC23RZRR part is unused and in its original packaging.
Return procedure for TPS54KC23RZRR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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