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Texas Instruments TPS56C230RJER
- Part No.:
- TPS56C230RJER
- Manufacturer:
- Texas Instruments
- Package:
- 20-PowerVFQFN
- Datasheet:
-
TPS56C230RJER.pdf
- Description:
- IC REG BUCK ADJ 12A 20VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:7,537
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Product details
Overview
TPS56C230 from Texas Instruments is a 4.5-V to 18-V input, synchronous step-down DC/DC converter delivering up to 12-A continuous output current with 0.6-V to 5.5-V adjustable output voltage, ±1% feedback accuracy at 25°C, and integrated 17-mΩ high-side / 5.9-mΩ low-side MOSFETs. It serves as a high-density power supply core in DTV, industrial PC, and wired networking systems.
For engineers reviewing the TPS56C230 datasheet, TPS56C230 pinout, TPS56C230 application, or TPS56C230 equivalent, key selection considerations include D-CAP3™ control for fast transient response without external compensation, selectable Eco-mode™/FCCM via MODE pin, 500-kHz fixed switching frequency, integrated Power Good indicator, and HotRod™ VQFN-20 thermal performance.
Technical Context
The TPS56C230 employs adaptive on-time D-CAP3™ control with internal ripple injection, enabling stable operation with ultra-low-ESR ceramic or polymer output capacitors and eliminating need for external loop compensation. Its control loop supports seamless CCM-to-DCM transition and includes valley-current overcurrent protection with temperature-compensated sensing.
Light-load behavior is programmable via the MODE pin: Eco-mode™ reduces switching frequency proportionally to load for peak efficiency at light loads, while Forced Continuous Conduction Mode (FCCM) maintains constant 500-kHz operation to minimize output ripple-critical for noise-sensitive applications like video processing or clock generation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 18 V - Supports 12-V rail and wide industrial input variations without pre-regulation. |
| Output Current | 12 A continuous - Delivers full rated current with thermal derating per RθJA = 42.3°C/W on standard board. |
| Feedback Accuracy | ±1% at 25°C (±1.5% over –40°C to 125°C) - Enables precise regulation for CPU/GPU core rails. |
| Switching Frequency | 500 kHz - Fixed frequency simplifies EMI filtering and enables compact magnetics design. |
| Integrated FETs | 17 mΩ HS / 5.9 mΩ LS - Minimizes conduction loss; achieves >90% efficiency at 12-A load with 12-VIN/1.2-VOUT. |
| Soft-Start Time | 1.2 ms internal (adjustable via SS pin) - Prevents inrush current; external capacitor extends time for sequencing-critical systems. |
| Protection Features | Cycle-by-cycle OCP, non-latched OVP/UVP/OTP/UVLO - Ensures robust fault recovery without system latch-up. |
Pinout & Package
TPS56C230 uses a 20-pin 3.0-mm × 3.0-mm HotRod™ VQFN package with exposed thermal pad (PGND-connected), optimized for low-inductance power delivery and enhanced thermal dissipation (RθJB = 13°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BST | Bootstrap supply | Provides gate drive voltage for high-side FET; requires 0.1-μF ceramic capacitor between BST and SW. |
| VIN (2,3,4,5) | Main input supply | Distributes 4.5–18 V to control circuitry; multiple pins reduce IR drop and improve decoupling. |
| SW (6,19,20) | Power switch node | Connects to inductor and bootstrap cap; three pins minimize switching loop inductance and EMI. |
| PGND (7,8,18,Pad) | Power ground return | Low-impedance path for high di/dt currents; thermal pad enhances heat transfer to PCB. |
| PGOOD | Open-drain status indicator | Asserts low if VFB < 85% or > 115% of target, during soft-start, or under fault conditions. |
| SS | Soft-start timing | Internal 1.2-ms ramp; external capacitor sets longer delay for power sequencing compliance. |
| MODE | Light-load mode select | Voltage divider from VCC/AGND selects Eco-mode (0–10% VCC) or FCCM (10–20% VCC). |
| FB | Output voltage feedback | Senses resistor divider; ±1% reference enables accurate 0.6–5.5-V output programming. |
| EN | Enable control | Active-high logic; 1.2–1.4 V threshold allows direct MCU GPIO or sequencer interface. |
| VCC | Internal LDO output | 5.0 V ±1.5% regulated supply for gate drivers; requires ≥1-μF local ceramic decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP3™ control architecture | Enables zero-external-compensation design with fast transient response (<10 µs) and stability across ceramic/polymer capacitor types. |
| Integrated 17-mΩ/5.9-mΩ FETs | Reduces BOM count and layout area; eliminates discrete MOSFET selection and gate driver design effort. |
| Selectably configurable light-load mode | MODE pin supports either Eco-mode™ (efficiency-optimized) or FCCM (ripple-optimized) without changing firmware or hardware. |
| Built-in output discharge function | 350-Ω internal discharge path ensures safe VOUT ramp-down during shutdown-no external circuit required. |
| Comprehensive protection suite | Includes cycle-by-cycle OCP, OVP (125%), UVP (60%), OTP (150°C), and UVLO (4.4 V) with automatic hiccup recovery. |
Applications
| DTV and Set-top Box | PC and Industrial PC |
|---|---|
Use Scenario: Powering SoC core voltage (1.0–1.2 V) and DDR memory termination (1.2–1.5 V) in broadcast video systems requiring low standby power and rapid wake-up. IC Role / Device Role / Timing Role: Primary buck regulator delivering tightly regulated, low-noise core power with fast load-step response to handle video decode bursts. Use Value: Eco-mode™ sustains >85% efficiency at 100-mA load, extending standby battery life; PGOOD enables clean system reset sequencing. | Use Scenario: Supplying GPU or FPGA I/O banks (2.5–3.3 V) and auxiliary rails in ruggedized industrial PCs operating in wide ambient temperatures. IC Role / Device Role / Timing Role: High-current, thermally robust DC/DC converter supporting 12-A peak loads with integrated thermal shutdown and UVLO. Use Value: HotRod™ VQFN package and RθJB = 13°C/W enable reliable operation at 125°C junction temperature without heatsink. |
| Wired Networking | Distributed Power Systems |
Use Scenario: Generating 1.8-V or 3.3-V rails for Ethernet PHYs, switches, and packet processors in PoE-powered infrastructure equipment. IC Role / Device Role / Timing Role: Efficient intermediate bus converter accepting 12–48 V PoE-derived input and stepping down to point-of-load voltages. Use Value: 18-V max input rating accommodates 48-V PoE+ transients; FCCM mode ensures minimal output ripple for signal integrity. | Use Scenario: Modular power distribution in telecom base stations or server racks where multiple identical 12-A rails feed parallel processing units. IC Role / Device Role / Timing Role: Pin-compatible upgrade path from 8-A TPS568230, enabling higher density without PCB redesign. Use Value: Identical footprint and pinout allow drop-in replacement; increased current capability supports next-gen ASIC power demands. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS568230RJER | 8-A rated, same 20-pin VQFN-3×3 package and pinout; shares D-CAP3™ control and MODE pin functionality. | Lower current capacity limits use in high-performance SoC or GPU rails; suitable for mid-tier networking or embedded controllers. | Select when 8-A output suffices and cost optimization is prioritized over headroom. |
| MP2315DJ-LF-Z | 12-A rated, 8-V to 36-V input range; uses current-mode control with external compensation; no integrated PGOOD or discharge. | Broader input range suits 24-V industrial systems; lacks Eco-mode/FCCM flexibility and requires additional components for sequencing. | Choose for higher VIN applications where TPS56C230's 18-V limit is insufficient, accepting added design complexity. |
Compared with TPS56C230, TPS568230RJER offers identical integration and footprint but reduced current capability, while MP2315DJ-LF-Z trades control simplicity and feature set for extended input voltage range-making TPS56C230 optimal for 12-V distributed systems needing high integration and thermal reliability.
Availability
TPS56C230 is available at Aetrix Electronics and suitable for DTV, industrial PC, and wired networking applications requiring stable component supply, long-term production continuity, and automotive-grade reliability validation.
Supply support for TPS56C230 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 TPS56C230 belongs to TI's D-CAP3™ synchronous buck converter product line, designed specifically for high-density, low-component-count power supplies in space-constrained consumer, computing, and communications equipment.
FAQ
What is the maximum input voltage rating for the TPS56C230?
The TPS56C230 has an absolute maximum input voltage rating of 20 V on the VIN pin, with recommended operating range specified from 4.5 V to 18 V. Operation above 18 V is not advised for sustained use, as it exceeds the recommended condition and may impact reliability or lifetime. The device includes UVLO with 4.4-V wake-up threshold and 3.7-V shutdown threshold to prevent malfunction during brownout conditions.
How does the MODE pin configure light-load operation in the TPS56C230?
The MODE pin on the TPS56C230 selects between Eco-mode™ and Forced Continuous Conduction Mode (FCCM) by reading a voltage divider from VCC to AGND at startup. A voltage ≤10% of VCC configures Eco-mode™ for highest light-load efficiency, while 10–20% of VCC enables FCCM to maintain constant 500-kHz switching and minimize output ripple. The setting is latched until VIN power cycles or EN toggles.
Does the TPS56C230 require external compensation components?
No, the TPS56C230 does not require external compensation components due to its D-CAP3™ control architecture. This proprietary adaptive on-time topology integrates internal ripple injection and compensation, enabling stable operation with ceramic, polymer, or mixed-output capacitor types without loop compensation networks-reducing BOM count and design iteration time.
What thermal performance can be expected from the TPS56C230 in a standard PCB layout?
In a standard 4-layer JEDEC board (70 mm × 70 mm, 2 oz copper), the TPS56C230 exhibits RθJA = 42.3°C/W. With optimized layout-including thermal vias under the exposed PGND pad-the effective RθJA drops to 28.2°C/W. This allows the device to sustain 12-A output continuously at ambient temperatures up to 65°C without exceeding the 125°C maximum junction temperature.
Can the TPS56C230 safely discharge its output during shutdown?
Yes, the TPS56C230 integrates an internal 350-Ω discharge path between SW and PGND, activated automatically when EN is deasserted. This ensures controlled ramp-down of VOUT without requiring external MOSFETs or resistors, meeting safety requirements for hot-swap and sequencing-critical applications. Discharge time depends on output capacitance but typically falls within tens of milliseconds for common 100–470-μF configurations.
TPS56C230RJER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-PowerVFQFN
- 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):
- 18V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 12A
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-VQFN-HR (3x3)
TPS56C230RJER FAQ
1.How can I place an order for TPS56C230RJER through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS56C230RJER 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 TPS56C230RJER reliable?
The price and inventory of TPS56C230RJER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS56C230RJER is usually 5 days.
3.What payment methods are accepted for TPS56C230RJER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS56C230RJER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS56C230RJER?
TPS56C230RJER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS56C230RJER 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 TPS56C230RJER?
For technical support, including TPS56C230RJER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS56C230RJER requirements.
6.How does Aetrix verify that TPS56C230RJER is sourced from the original manufacturer or authorized distributors?
All TPS56C230RJER 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 TPS56C230RJER meets industry standards.
7.What is the process for return or replacement of TPS56C230RJER?
All TPS56C230RJER units undergo pre-shipment inspection (PSI). If there is an issue with TPS56C230RJER, 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 TPS56C230RJER part is unused and in its original packaging.
Return procedure for TPS56C230RJER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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