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Texas Instruments TPS566250DDAR
- Part No.:
- TPS566250DDAR
- Manufacturer:
- Texas Instruments
- Package:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS566250DDAR.pdf
- Description:
- IC REG BUCK ADJ 5A 8SOPWR
- Quantity:
- Payment:
- Shipping:
Inventory:1,255
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Product details
Overview
TPS566250DDAR from Texas Instruments is a synchronous step-down DC-DC converter with integrated high-side (44 mΩ) and low-side (23 mΩ) N-channel MOSFETs, D-CAP2™ adaptive on-time control, 650-kHz switching frequency, and I²C-compatible VID interface for programmable output voltage from 0.6 V to 1.87 V in 5.5-mV steps. It delivers up to 6 A continuous output current and supports pre-biased soft start for use in media processor power rails.
For engineers reviewing the TPS566250DDAR datasheet, TPS566250DDAR pinout, TPS566250DDAR application, or TPS566250DDAR equivalent, key selection considerations include its VID-controlled output voltage range, thermal shutdown at 165°C, ±1% FB accuracy at 25°C, Eco-mode™ efficiency optimization at light load, and compatibility with low-ESR ceramic and POSCAP output capacitors.
Technical Context
The TPS566250DDAR implements D-CAP2™ control architecture combining adaptive on-time PWM with internal ramp compensation, enabling stable operation without external loop compensation and supporting both ceramic and polymer capacitors. Its valley-current overcurrent protection monitors low-side FET voltage during conduction and initiates hiccup-mode shutdown after seven consecutive fault cycles.
VID programming uses a 7-bit output voltage register (address 0x00) with odd-parity checksum validation over an SMBus 2.0–compliant I²C interface (chip address 0x31), while power-good status is readable from register 0x18. The device transitions between PWM and Advanced Eco-mode™ based on load current, maintaining low output ripple even at light loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 17 V - supports wide industrial and consumer input bus voltages including 5 V, 12 V, and 15 V rails. |
| Output Current | 6 A continuous - sufficient for SoC core supplies in media processors and embedded controllers. |
| Switching Frequency | 650 kHz - fixed pseudo-constant frequency enables predictable EMI filtering and compact magnetics design. |
| Feedback Accuracy | ±1% at 25°C - ensures tight regulation for sensitive digital loads like DDR memory and CPU cores. |
| VID Resolution | 5.5 mV per step - allows precise voltage margining and dynamic scaling across 0.6 V–1.87 V range. |
| Thermal Shutdown | 165°C with 15°C hysteresis - protects against sustained overload or poor PCB thermal design. |
| Soft Start Time | 1 ms internal - prevents inrush current and enables monotonic startup into pre-biased outputs. |
Pinout & Package
TPS566250DDAR is housed in an 8-pin HSOP package (4.90 mm × 3.90 mm) with exposed PowerPAD™ thermal pad requiring solder connection to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Enable control input | Active-high logic input; must be ≥1.1 V to enable regulation; internal pull-down ensures default disable. |
| FB | Feedback sensing node | Connects to resistor divider from VOUT; sets output voltage when VID is inactive or unconfigured. |
| GND | Power ground reference | Primary return path for power stage and control circuitry; tie to PowerPAD™ for optimal noise immunity. |
| SCL | I²C clock line | Open-drain input; requires external 3.3 V pull-up; supports 400 kHz SMBus timing. |
| SDA | I²C data line | Open-drain bidirectional I/O; shares same 3.3 V pull-up as SCL; validates checksum on write. |
| SW | Switch node | Connects to external inductor; carries high di/dt switching current; critical for layout EMI control. |
| VIN | Main input supply | Accepts 4.5–17 V; powers internal LDOs and gate drivers; bypass with 10 µF ceramic capacitor. |
| BOOT | High-side gate driver supply | Connect 0.1 µF ceramic capacitor between BOOT and SW to sustain high-side FET drive during duty cycle. |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP2™ Control Mode | Eliminates need for external compensation components while maintaining stability with zero-ESR ceramic capacitors. |
| Advanced Eco-mode™ | Reduces switching losses at light load by entering discontinuous conduction mode, improving efficiency below ~1 A. |
| Monotonic Pre-Biased Soft Start | Prevents reverse current flow during startup into powered outputs, avoiding system-level brownouts. |
| Hiccup Overload Protection | Shuts down for 10 ms after 7-cycle valley-current fault detection, then auto-retries-limits thermal stress during short circuits. |
| VID Register Read-Back | Enables firmware verification of programmed output voltage via I²C read of register 0x00, ensuring configuration integrity. |
Applications
| Media Processor Core Supply | DDR Memory Termination |
|---|---|
Use Scenario: Powers ARM-based media SoCs in digital TVs and set-top boxes requiring dynamic voltage scaling. IC Role / Device Role / Timing Role: Primary buck regulator delivering 1.1 V @ 6 A with I²C-programmable VID steps for performance state transitions. Use Value: Enables real-time voltage adjustment without hardware changes, reducing BOM count and supporting multiple SoC variants. | Use Scenario: Supplies VTT termination for DDR3/DDR4 memory interfaces in embedded multimedia systems. IC Role / Device Role / Timing Role: Precision 0.6 V regulator with ±1% FB accuracy and low output ripple (<10 mVpp) under transient load steps. Use Value: Maintains signal integrity during high-speed memory access by minimizing VTT droop and noise coupling. |
| System-on-Chip Auxiliary Rail | High-Density Point-of-Load Converter |
Use Scenario: Generates 1.8 V auxiliary supply for PCIe PHYs, USB controllers, and video encoders in compact designs. IC Role / Device Role / Timing Role: Secondary buck converter using FB-only configuration (no VID), leveraging D-CAP2™ fast transient response. Use Value: Achieves <10 µs recovery from 50% load transients, preventing logic errors in time-critical peripherals. | Use Scenario: Replaces discrete controller + MOSFET solutions in space-constrained industrial gateways and network appliances. IC Role / Device Role / Timing Role: Integrated 6-A solution with HSOP-8 footprint (4.9 × 3.9 mm) and PowerPAD™ thermal enhancement. Use Value: Reduces total board area by >40% versus discrete alternatives while simplifying layout and qualification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS566240DDAR | Same package and pinout; identical D-CAP2™ control but 4.5–18 V input and 0.6–1.87 V output; no VID interface. | Lacks I²C programmability; suited for fixed-output applications where VID is unnecessary. | Select when output voltage is static and cost reduction is prioritized over flexibility. |
| MP2315GJ-Z | Monolithic 6-A buck with 4.5–18 V input, 0.8–15 V output; constant-on-time control; no VID or I²C interface. | Fixed-resistor feedback only; higher quiescent current (350 µA vs 525 µA typical); no read-back capability. | Choose for simpler firmware integration and lower component count where voltage agility is not required. |
Compared with TPS566250DDAR, TPS566240DDAR removes VID functionality while retaining identical thermal and electrical performance, whereas MP2315GJ-Z trades programmability for broader output voltage range and simplified control-but lacks the precision feedback accuracy and hiccup-mode protection of the TI device.
Availability
TPS566250DDAR is available at Aetrix Electronics and suitable for media processor power delivery, DDR memory termination, SoC auxiliary rail generation, and high-density point-of-load conversion requiring stable component supply and long-term manufacturability.
Supply support for TPS566250DDAR 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 and system-level power architecture.
The TPS566250DDAR belongs to TI's D-CAP2™ synchronous buck converter family, designed specifically for high-performance, low-component-count power delivery in consumer media processors and dense embedded systems where thermal efficiency and voltage agility are critical.
FAQ
What is the maximum output current rating for the TPS566250DDAR?
The TPS566250DDAR is rated for 6 A continuous output current under recommended operating conditions (TJ ≤ 125°C, proper PCB thermal design). Peak current capability reaches 9.5 A before valley-current limit activation, verified across input voltage (4.5–17 V) and temperature (–40°C to 125°C) ranges per datasheet Section 7.5.
Does the TPS566250DDAR require external compensation components?
No, the TPS566250DDAR uses D-CAP2™ adaptive on-time control, which embeds internal compensation and eliminates the need for external RC networks. This enables stable operation with ceramic, POSCAP, or SP-CAP output capacitors without tuning-verified across 0.6 V to 1.87 V output range and 1.5 µH inductors per datasheet Sections 8.3.1 and 9.2.
How does the VID interface on the TPS566250DDAR work?
The TPS566250DDAR implements a 7-bit VID register (address 0x00) accessible via I²C/SMBus at chip address 0x31. Each code corresponds to a 5.5-mV output voltage step from 0.6 V to 1.87 V. A checksum bit validates transmission, and register read-back confirms successful programming per datasheet Sections 8.5 and 8.6.1.1.
Can the TPS566250DDAR start up into a pre-biased output?
Yes, the TPS566250DDAR features monotonic pre-biased soft start. When EN is asserted and FB voltage exceeds the initial soft-start reference, the controller incrementally activates the low-side FET to avoid sinking current from the pre-charged rail-ensuring smooth, non-inverting startup verified in datasheet Section 8.3.3 and Figure 9-1.
What thermal management requirements apply to the TPS566250DDAR?
The TPS566250DDAR requires soldering its PowerPAD™ thermal pad to a dedicated PCB copper pour tied to GND. With this, junction-to-board thermal resistance is 24.9°C/W (RθJB). For 6-A operation at 12 VIN/1.1 VOUT, thermal design must maintain TJ ≤ 125°C; derating is needed above ambient 85°C per datasheet Section 7.4 and Figure 7-7.
TPS566250DDAR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- D-CAP2™, Eco-Mode™
- Package/Case:
- 8-PowerSOIC (0.154", 3.90mm Width)
- 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):
- 17V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 1.87V
- Current - Output:
- 5A
- Frequency - Switching:
- 650kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO PowerPad
TPS566250DDAR FAQ
1.How can I place an order for TPS566250DDAR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS566250DDAR 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 TPS566250DDAR reliable?
The price and inventory of TPS566250DDAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS566250DDAR is usually 5 days.
3.What payment methods are accepted for TPS566250DDAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS566250DDAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS566250DDAR?
TPS566250DDAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS566250DDAR 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 TPS566250DDAR?
For technical support, including TPS566250DDAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS566250DDAR requirements.
6.How does Aetrix verify that TPS566250DDAR is sourced from the original manufacturer or authorized distributors?
All TPS566250DDAR 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 TPS566250DDAR meets industry standards.
7.What is the process for return or replacement of TPS566250DDAR?
All TPS566250DDAR units undergo pre-shipment inspection (PSI). If there is an issue with TPS566250DDAR, 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 TPS566250DDAR part is unused and in its original packaging.
Return procedure for TPS566250DDAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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