TPS63061DSCT

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The Texas Instruments TPS63061DSCT is a small and low-cost synchronous buck converter targeted at 5V/500mA, 3.3V/500mA, 1.8V/200mA rail regulation applications. It is designed to have a high efficiency of 1V to 5.5V input voltage range and 1MHz switching frequency to support low-power applications. It is part of the TPS63060/TPS63061 family of integrated power management solutions. The device is ideal for regulating low-voltage point-of-load (PoL) as well as system-level power rails. Additionally, it is capable of providing an output disable control to support wide range of applications. Taking all these advantages into account, this device is widely used in a variety of applications, such as the charging and discharge system of laptop, information storage equipment, smart phones, and portable electronics.

The TPS63061 DSCT is a synchronous buck regulator, belongs to the PMIC (Power Management Integrated Circuit) family. It is a DC-DC switching regulator which offers high efficiency and high current at low cost. As a DC-DC switching regulator, it provides a steady output voltage to the load regardless of input voltage conditions. The output voltage is adjustable via the integrated voltage regulator.

The TPS63061DSCT operates with a feedback control loop that stabilizes the output voltage by constantly monitoring and comparing the voltage across the regulator to the set-point set command. The control loop adjusts the duty cycle of the output switch, thus maintaining the output voltage within the proper range. The operating frequency of the device can be designed between 300kHz to 1MHz to enable high efficiency. An integrated low side current sensing circuit also provides a method to detect and monitor the load current accurately.

When the device is enabled, the output pin pull-up current source (IPDRV) drives the external P-channel MOSFET to regu­late the output voltage. The current sensing resistor (Rsense) connects between the internal PFM switch and the ground to detect the switch current. The error amplifier controls the modulation of the PWM comparator voltage to regulate the output voltage. Current sense amplifier amplifies the differential voltage across the current sensing resistor (Rsense) to achieve accurate current monitoring. When the current sensing voltage exceeds the Over Current Level, the device enters into the non-overload protection mode.

Another feature of the TPS63061DSCT is its integrated enable pin. This allows the output to be disabled when the control pin is activated. This feature can be used to help extend battery life by selectively turning off power to low-power consuming devices or to protect the system from a short-circuit condition. The device also has integrated over-voltage, over-current and thermal shutdown protection.

Overall, due to its small size and high-efficiency, the TPS63061DSCT is a great choice for a variety of applications. It is ideal for providing regulated voltage and current at low cost while upholding high reliability. The device is also suitable for protecting the system from short circuit, over current and over voltage conditions by disabling the output when the voltage or current reaches the predetermined threshold. The integrated enable pin ensures the output is disabled and the protection features provide a safe operation in complex and critical applications. Hence, the TPS63061DSCT has the potential to provide a great solution for a wide range of applications.

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