TPS566231 - 6A Synchronous Buck Converter | Texas Instruments
MPN: TPS566231 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.56 | $25.60 |
| 100 | $2.28 | $228.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.82 | $1,820.00 |
Drop-in alternatives for TPS566231 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
TPS566238
β Drop-Inπ Reference alternative (not in catalog)
TPS566231P
β Drop-Inπ Reference alternative (not in catalog)
TPS566238P
β Drop-Inπ Reference alternative (not in catalog)
TPS566231 Maximum Ratings & Electrical Characteristics
| Input Voltage Range | 3 V to 18 V |
| Output Current | 6 A |
| Output Voltage Range | 0.6 V to [DATA_NEEDED: maximum output voltage] |
| Switching Frequency | [DATA_NEEDED: switching frequency] |
| Control Architecture | D-CAP3β’ |
| Duty Cycle | Up to 98% |
| Quiescent Current | ULQ (ultra low quiescent) |
| Soft Start | Adjustable via SS pin |
| Power Good | Yes (P variant) |
| Protection Features | OVP, OCP, UVLO, OTP, UVP with hiccup |
| Package | 9-PowerVFQFN (RQFR) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | [DATA_NEEDED: operating temperature range] |
| RoHS Status | Compliant |
| Efficiency | Peak >90% (typical 12V to 5V) |
TPS566231 Pin Configuration
| Pin 1 | VIN β Input supply voltage |
| Pin 2 | GND β Ground |
| Pin 3 | SW β Switch node output |
| Pin 4 | BOOT β Bootstrap capacitor connection |
| Pin 5 | VOUT β Output voltage sense |
| Pin 6 | FB β Feedback input |
| Pin 7 | SS β Soft-start timing |
| Pin 8 | EN β Enable input |
| Pin 9 | PG β Power good output (P variant only) |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
TPS566231 is suitable for 6 applications: Networking Equipment, Server and Storage Systems, Industrial Automation, Telecommunications, FPGA and ASIC Power Supplies, Consumer Electronics.
Networking Equipment
The TPS566231 provides a high-efficiency, 6A point-of-load solution for networking equipment such as routers, switches, and base stations. Its 3V to 18V input range accommodates various intermediate bus voltages, while the D-CAP3β’ control ensures fast transient response to handle dynamic loads from processors and ASICs. The compact PowerVFQFN package saves board space, and the adjustable soft-start prevents inrush current during power-up. With integrated protection features, it ensures reliable operation in 24/7 networking environments.
Recommended
Server and Storage Systems
In server and storage systems, the TPS566231 efficiently converts 12V rails to lower voltages for memory, logic, and I/O circuits. Its 6A output current is suitable for powering DDR memory, SSDs, and controllers. The high efficiency reduces thermal stress, and the pulse skip mode maintains efficiency at light loads during idle periods. The power good (PG) pin on the P variant enables proper power sequencing in multi-rail systems, ensuring reliable startup and shutdown.
Recommended
Industrial Automation
The TPS566231 is well-suited for industrial automation equipment, including PLCs, motor drives, and robotics. Its wide input voltage range (3V to 18V) allows operation from 12V or 24V industrial supplies with proper derating. The integrated protection features (OVP, OCP, OTP) ensure robustness in harsh environments. The adjustable soft-start reduces stress on input supplies, and the high efficiency minimizes heat generation in sealed enclosures. The compact package is ideal for space-constrained control boards.
Recommended
Telecommunications
In telecommunications infrastructure, the TPS566231 provides reliable power for base stations, routers, and optical network units. Its 3V to 18V input range supports standard telecom voltages like 12V and 5V. The high efficiency reduces power consumption and cooling requirements, which is critical for remote and outdoor installations. The D-CAP3β’ control provides fast transient response to handle bursty data traffic. The device's small footprint enables high-density board designs.
Recommended
FPGA and ASIC Power Supplies
The TPS566231 is ideal for powering FPGAs, ASICs, and DSPs that require high current at low voltages (e.g., 1.0V, 1.2V, 1.8V). Its 6A output current can supply core and I/O rails, and the adjustable output voltage down to 0.6V meets the requirements of modern low-voltage devices. The fast transient response of D-CAP3β’ ensures stable operation during dynamic load changes. The power good (PG) pin enables sequencing with other rails, ensuring proper power-up and power-down sequences.
Recommended
Consumer Electronics
The TPS566231 can be used in consumer electronics such as TVs, set-top boxes, and gaming consoles, where efficient power conversion is essential. Its wide input range allows operation from various AC-DC adapters (e.g., 12V, 19V). The high efficiency reduces heat and extends product lifespan. The pulse skip mode improves efficiency at standby loads, helping meet energy efficiency regulations. The compact package is suitable for slim designs.
Recommended
Recommended Products Summary
Engineering reference data for TPS566231 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TPS566238 | TPS566231P | TPS566238P |
|---|---|---|---|---|
| Package | 9-PowerVFQFN (RQFR) | 9-PowerVFQFN (RQFR) | 9-PowerVFQFN (RQFR) | 9-PowerVFQFN (RQFR) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Output Current | 6 A | 6 A | 6 A | 6 A |
| Input Voltage Range | 3 V to 18 V | 3 V to 18 V | 3 V to 18 V | 3 V to 18 V |
| Power Good | No (P variant has PG) | No (P variant has PG) | Yes | Yes |
| Soft Start | Adjustable via SS pin | Adjustable via SS pin | Adjustable via SS pin | Adjustable via SS pin |
| Control Architecture | D-CAP3β’ | D-CAP3β’ | D-CAP3β’ | D-CAP3β’ |
| Protection Features | OVP, OCP, UVLO, OTP, UVP | OVP, OCP, UVLO, OTP, UVP | OVP, OCP, UVLO, OTP, UVP | OVP, OCP, UVLO, OTP, UVP |
Key Differentiators
- High output current of 6A in a compact 9-pin PowerVFQFN package (vs TPS62130RGTR)
- Wide input voltage range of 3V to 18V (vs TPS54331DR)
- D-CAP3β’ control for fast transient response (vs TPS54331DR)
Design Notes
Place input and output capacitors as close to the IC pins as possible to minimize parasitic inductance. Use a 10uF ceramic capacitor for input and a 22uF ceramic capacitor for output, with additional high-frequency bypass capacitors. Ensure the ground connection is solid with a low-impedance path to the thermal pad.
The PowerVFQFN package has an exposed thermal pad that must be soldered to a large copper area on the PCB for effective heat dissipation. For 6A output at high input-output differentials, power dissipation can be significant. Use multiple vias to connect the thermal pad to inner and bottom layers to spread heat. Consider airflow or heatsinking for high ambient temperature environments.
Do not exceed the absolute maximum input voltage of 18V. Ensure the bootstrap capacitor is properly sized and placed close to the BOOT and SW pins. The SS pin capacitor determines soft-start time; too small a value may cause inrush current issues. For the P variant, the PG pin is open-drain and requires a pull-up resistor.
Compliance Information
RoHS compliant per TI product page. Not AEC-Q100 qualified. Halogen-free status not specified in provided data.
