Overview
The TPS566250DDA from Texas Instruments is a synchronous step-down (buck) converter designed to provide a cost-effective, low-component-count solution for various power bus regulators. This device integrates two N-channel MOSFETs and operates using the D-CAP2™ control mode, which offers a fast transient response without the need for external compensation components. The output voltage can be set via the feedback pin (FB) with a resistor divider or through an I2C compatible interface, allowing for dynamic voltage adjustments. The TPS566250DDA is optimized for applications requiring high efficiency, low output voltage ripple, and advanced protection features such as overcurrent, undervoltage lockout, and thermal shutdown.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 4.5 to 17 | V |
| Output Voltage Range | 0.6 to 1.87 | V |
| Output Current | 6 | A |
| Switching Frequency | 650 | kHz |
| High-Side MOSFET Resistance | 44 | mΩ |
| Low-Side MOSFET Resistance | 23 | mΩ |
| Feedback Voltage Step | 5.5 mV | |
| Soft Start Time | 1 ms | |
| Operating Junction Temperature Range | -40 to 150 | °C |
| Package Type | HSOP (8) | |
| Package Size | 4.90 mm x 3.90 mm |
Key Features
- Integrated FETs optimized for lower duty cycle applications.
- D-CAP2™ control mode for fast transient response without external compensation components.
- VID control with multibyte interface and I2C read-back capability.
- Advanced Eco-mode™ for high efficiency at light loads and low output voltage ripple.
- Monotonic pre-biased soft start to prevent sinking current during startup.
- Hiccup timer for overload protection.
- Support for low ESR output capacitors such as POSCAP or SP-CAP and ultra-low ESR ceramic capacitors.
Applications
- Media processors for consumer applications such as digital TVs and set-top boxes.
- System on-chip power management.
- High-density power distribution systems.
Q & A
- What is the input voltage range of the TPS566250DDA?
The input voltage range is from 4.5 V to 17 V. - What is the maximum output current of the TPS566250DDA?
The maximum output current is 6 A. - What is the switching frequency of the TPS566250DDA?
The switching frequency is 650 kHz. - How can the output voltage be adjusted on the TPS566250DDA?
The output voltage can be adjusted via the feedback pin (FB) with a resistor divider or through an I2C compatible interface. - What protection features does the TPS566250DDA offer?
The device offers overcurrent protection, undervoltage lockout, and thermal shutdown protection. - What is the purpose of the Advanced Eco-mode™ in the TPS566250DDA?
The Advanced Eco-mode™ increases efficiency at light loads and reduces output voltage ripple. - What type of MOSFETs are integrated into the TPS566250DDA?
The device integrates two N-channel MOSFETs. - What is the package type and size of the TPS566250DDA?
The package type is HSOP (8) and the size is 4.90 mm x 3.90 mm. - How does the soft start function work in the TPS566250DDA?
The device has an internal 1 ms soft-start that ramps up the reference voltage to the PWM comparator to prevent sinking current from the output during startup. - What is the operating junction temperature range of the TPS566250DDA?
The operating junction temperature range is from -40°C to 150°C.
