The TPS40009DGQ is a highly-integrated synchronous buck controller that is designed to provide a flexible and efficient power supply solution. It is part of Texas Instruments' TPS4000 family of IC components.
This buck controller IC incorporates several key features that make it a versatile and reliable choice for various applications. First and foremost, it offers a wide input voltage range of 6V to 28V, allowing it to handle a wide array of power sources. This flexibility makes it suitable for applications where the input voltage may vary significantly.
The TPS40009DGQ supports a high-frequency switching operation, with a programmable switching frequency ranging from 100kHz to 1MHz. This capability enables designers to select the optimal frequency for their applications and helps in achieving high power efficiency.
Another significant feature of this IC is its adaptive on-time control architecture, which enables fast transient response and stable output voltage regulation. This control mechanism automatically adjusts the on-time based on the load conditions, ensuring a constant output voltage even with varying loads.
The TPS40009DGQ provides a comprehensive set of protection features to safeguard the system. These features include overvoltage protection, undervoltage lockout, input UVLO hysteresis, and thermal shutdown. These protections ensure reliable operation and protect the IC from potential damage under abnormal conditions
