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Texas Instruments TPS566250DDA
- Part No.:
- TPS566250DDA
- Manufacturer:
- Texas Instruments
- Package:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS566250DDA.pdf
- Description:
- IC REG BUCK ADJ 5A 8SOPWR
- Quantity:
- Payment:
- Shipping:
Inventory:300
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Product details
Overview
TPS566250 from Texas Instruments is a synchronous step-down DC/DC converter with integrated high- and low-side MOSFETs, supporting 4.5–17 V input, 6-A continuous output, 0.6–1.87 V programmable output via I²C/VID, and D-CAP2™ adaptive on-time control for fast transient response in media processor and SoC power applications.
For engineers reviewing the TPS566250 datasheet, TPS566250 pinout, TPS566250 application, or TPS566250 equivalent, this page delivers verified electrical specs, thermal performance data, I²C register mapping, VID voltage step resolution (5.5 mV), and validated soft-start behavior - all critical for power rail design in digital TV, set-top boxes, and high-density power distribution systems.
Technical Context
The TPS566250 implements D-CAP2™ control architecture combining adaptive on-time PWM with internal compensation, enabling stable operation with ceramic or low-ESR POSCAP/SP-CAP output capacitors without external loop components. Its valley-current overcurrent protection monitors low-side FET voltage during conduction to detect load faults.
It supports dual-mode operation: fixed-frequency PWM at heavy loads and Advanced Eco-mode™ at light loads to minimize output ripple and maximize efficiency. The I²C interface uses SMBus Write/Read Byte protocols with 7-bit address 0x31, enabling dynamic VOUT reprogramming and PGOOD status readback after regulation is achieved.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 17 V - supports wide industrial and consumer supply rails including 5 V, 12 V, and 15 V bus systems. |
| Output Current | 6 A continuous - sufficient for core voltage regulation of media processors and multi-core SoCs. |
| Output Voltage Range | 0.6 V to 1.87 V in 5.5-mV steps - enables precise VID-controlled rail tuning for DDR memory, CPU cores, and GPU domains. |
| Switching Frequency | 650 kHz - fixed pseudo-constant frequency set by adaptive on-time control, simplifying EMI filtering and inductor selection. |
| RDS(on) (High-Side) | 44 mΩ typical - reduces conduction loss at high duty cycles, improving efficiency in 12 V-to-1.1 V conversion. |
| RDS(on) (Low-Side) | 23 mΩ typical - minimizes dropout loss and thermal rise during light-load Eco-mode operation. |
| Feedback Accuracy | ±1% at 25°C (12 VIN/1.1 VOUT) - ensures tight regulation tolerance for sensitive digital logic supplies. |
| Soft Start Time | 1 ms internal monotonic ramp - prevents inrush current and enables reliable pre-biased startup in hot-swap systems. |
Pinout & Package
TPS566250 is housed in an HSOP-8 (DDA) package measuring 4.90 mm × 3.90 mm with exposed PowerPAD™ thermal pad requiring solder connection to PCB ground plane for thermal management and electrical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable control input | Active-high logic input; threshold 1.1–1.6 V; internal 225–800 kΩ pull-down enables default disable state. |
| FB (Pin 2) | Feedback sensing node | Monitors output voltage via resistor divider; 0.6 V reference enables precision regulation across full VOUT range. |
| SDA (Pin 3) | I²C data bidirectional line | Open-drain interface compatible with 3.3 V SMBus; supports VID programming and PGOOD readback. |
| SCL (Pin 4) | I²C clock input | Accepts up to 400 kHz clock; timing compliant with Phillips I²C v1.1 and SMBus v2.0 standards. |
| GND (Pin 5) | Power ground reference | Primary return path for power and signal currents; FB return must tie to GND at single point to avoid noise coupling. |
| SW (Pin 6) | Switch node | Connects to both MOSFETs; requires low-inductance layout to minimize ringing and EMI in high-dI/dt switching path. |
| BOOT (Pin 7) | High-side gate driver supply | Requires 0.1 µF ceramic capacitor between BOOT and SW to sustain gate drive voltage above VIN during high-side conduction. |
| VIN (Pin 8) | Main input supply | Accepts 4.5–17 V; feeds internal LDO and gate drivers; decoupling near pin essential for stability. |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP2™ Control Mode | Eliminates need for external compensation components while maintaining stability with ceramic or ultra-low-ESR capacitors. |
| Advanced Eco-mode™ | Enables discontinuous conduction at light loads to reduce switching losses and maintain >85% efficiency down to 10 mA output. |
| VID Control via I²C | 7-bit output voltage register (0x00) with odd-parity checksum enables dynamic rail scaling and margining in real time. |
| Monotonic Pre-Biased Soft Start | Prevents reverse current flow into pre-charged outputs by gradually enabling synchronous rectification during startup. |
| Hiccup Overload Protection | Enters timed shutdown (10 ms off, 1.3 ms hiccup delay) upon sustained overcurrent, protecting MOSFETs and inductor. |
| Integrated Thermal Shutdown | Non-latching 165°C junction shutdown with 15°C hysteresis ensures safe recovery after thermal stress events. |
Applications
| Digital TV Core Supply | Set-Top Box SoC Rail |
|---|---|
Use Scenario: Powers ARM-based video processing SoC requiring dynamically adjustable 1.0–1.2 V core voltage under varying decode workloads. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering 6-A peak current with I²C-programmable VOUT and PGOOD monitoring. Use Value: Enables real-time voltage scaling to match computational load, reducing average power consumption by up to 22% versus fixed-voltage solutions. |
Use Scenario: Supplies 1.8 V I/O and 1.1 V memory interface rails in compact set-top box designs with strict thermal envelope limits. IC Role / Device Role / Timing Role: Dual-rail capable converter using FB divider for one rail and I²C VID for the other, sharing single inductor layout. Use Value: Reduces BOM count by eliminating discrete VID DACs and external regulators, saving 32 mm² PCB area per rail. |
| High-Density Server PSU | Media Processor Power Bus |
Use Scenario: Delivers tightly regulated 0.85 V at 6 A to FPGA fabric in space-constrained telecom blade servers. IC Role / Device Role / Timing Role: Point-of-load regulator with D-CAP2™ fast transient response (<5 µs recovery from 50% load step) and thermal foldback. Use Value: Maintains <±15 mV output deviation during burst-mode video encoding, preventing logic errors and system resets. |
Use Scenario: Generates multiple sub-1.5 V rails for audio DSP, video encoder, and HDMI PHY in all-in-one media hubs. IC Role / Device Role / Timing Role: Centralized power controller using I²C broadcast writes to coordinate rail sequencing and fault reporting. Use Value: Enables synchronized power-up/down across 4+ rails with single master command, reducing firmware complexity by 65%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS566240DDA | Same HSOP-8 package and D-CAP2™ control, but 4-A output rating and no I²C interface - lacks VID programmability and PGOOD readback. | Applicable where fixed-output voltage and lower current suffice, such as auxiliary rails or legacy designs without dynamic scaling. | Select when cost sensitivity outweighs programmability needs and peak load remains ≤4 A. |
| MP2315GJ-Z | Monolithic 6-A buck with 4.5–28 V input, but uses voltage-mode control and lacks integrated I²C - requires external VID DAC and feedback compensation. | Suitable for industrial environments needing wider VIN range and higher UVLO threshold (4.2 V), but adds 3–5 extra components per rail. | Choose when operating beyond 17 V input or requiring extended temperature range (–40°C to +125°C ambient). |
Compared with TPS566250, TPS566240DDA offers identical layout compatibility but sacrifices programmability and current headroom, while MP2315GJ-Z trades integration for input voltage flexibility and external control - making TPS566250 optimal for compact, software-configurable consumer SoC power delivery.
Availability
TPS566250 is available at Aetrix Electronics and suitable for digital TV, set-top box, and high-density power distribution systems requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.
Supply support for TPS566250 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 and embedded processing technologies, with decades of expertise in power management IC design and manufacturing.
The TPS566250 belongs to TI's D-CAP2™ synchronous buck converter product line, engineered specifically for high-efficiency, low-component-count power delivery in consumer media processors and system-on-chip platforms.
FAQ
What is the minimum output voltage supported by the TPS566250?
The TPS566250 supports a minimum output voltage of 0.6 V, achievable via either external resistor divider on the FB pin or I²C register programming. This 0.6 V floor is maintained across temperature and load conditions, enabling direct powering of advanced low-voltage logic cores and memory interfaces without additional level-shifting circuitry.
Does the TPS566250 require external compensation components?
No, the TPS566250 does not require external compensation components due to its integrated D-CAP2™ control architecture. The internal adaptive on-time loop provides inherent stability with ceramic, POSCAP, and SP-CAP output capacitors - eliminating the need for type-II or type-III compensation networks typically required in voltage-mode or current-mode controllers.
How does the TPS566250 handle pre-biased outputs during startup?
The TPS566250 implements monotonic pre-biased soft start by initially disabling synchronous rectification and gradually increasing low-side FET on-time cycle-by-cycle only after internal soft-start voltage exceeds the pre-bias level. This prevents reverse current flow into the output capacitor and ensures smooth, non-monotonic-free ramp-up to regulation - critical for hot-swap and multi-rail sequencing applications.
What I²C address does the TPS566250 use for VID communication?
The TPS566250 uses a fixed 7-bit I²C slave address of 0x31 (binary 0110001), as defined in its internal ROM. When initiating a write transaction, the master sends the 8-bit address byte 0x62 (0x31 << 1 | 0); for read transactions, it sends 0x63 (0x31 << 1 | 1). The device responds with ACK only upon recognizing this exact address.
Can the TPS566250 operate without connecting the SDA and SCL pins?
Yes, the TPS566250 operates fully functional without SDA and SCL connections - in that case, output voltage is set solely by the external FB resistor divider. The I²C interface is optional and inactive until both SDA and SCL are pulled high simultaneously and VOUT reaches regulation; unconnected pins default to high-impedance and do not affect basic buck operation.
TPS566250DDA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- D-CAP2™, Eco-Mode™
- Package/Case:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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
TPS566250DDA FAQ
1.How can I place an order for TPS566250DDA through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS566250DDA 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 TPS566250DDA reliable?
The price and inventory of TPS566250DDA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS566250DDA is usually 5 days.
3.What payment methods are accepted for TPS566250DDA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS566250DDA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS566250DDA?
TPS566250DDA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS566250DDA 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 TPS566250DDA?
For technical support, including TPS566250DDA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS566250DDA requirements.
6.How does Aetrix verify that TPS566250DDA is sourced from the original manufacturer or authorized distributors?
All TPS566250DDA 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 TPS566250DDA meets industry standards.
7.What is the process for return or replacement of TPS566250DDA?
All TPS566250DDA units undergo pre-shipment inspection (PSI). If there is an issue with TPS566250DDA, 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 TPS566250DDA part is unused and in its original packaging.
Return procedure for TPS566250DDA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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