TPS62065DSGT Application Field and Working Principle

The TPS62065DSGT is a high-efficiency, synchronous step-down switch-mode DC/DC converter designed for powering applications from one or two-cell Lithium-ion or LiFePo4 batteries. It is housed in a small, surface mounted 10-pin WSON package. The product is capable of delivering up to 2A of output current with output voltage adjustable from 0.5V to 4.5V, making it suitable for powering various types of high-performance and low-power applications.

Features

• Wide Input Range: 2.25V to 13V
• Output Voltage: 0.5V to 4.5V
• Output Current: Up to 2A
• High Efficiency: Up to 94%
• Low Shutdown Current: 10µA (typical)

Applications

• Smartphones and Tablets
• GPS and Wearable Devices
• Embedded Systems

Working Principle

The TPS62065DSGT is a current mode synchronous buck converter, which means it uses the switching principle to step down a DC voltage to the desired output voltage. The circuit is optimized for high efficiency and fast, accurate load transients.The switching frequency is internally set, and can be varied using an external resistor. It utilizes an internal rectifier diode, which reduces losses and improves efficiency in low-output voltage (> 3.2V) applications. The device also incorporates a programmable over-current protection (OCP) with typical trip levels from 0.225A up to 2.25A. The TPS62065DSGT also features an integrated Power Good (PG) output to indicate when the output voltage is within the ± 10% load regulation window.

Conclusion

The TPS62065DSGT is a high-efficiency, synchronous step-down switch-mode DC/DC converter designed for powering applications from one or two-cell Lithium-ion or LiFePo4 batteries. It is housed in a small, surface-mounted 10-pin WSON package, and is capable of delivering up to 2A of output current with output voltage adjustable from 0.5V to 4.5V. The device is suitable for powering various types of high-performance and low-power applications, such as smartphones and tablets, GPS and wearable devices, and embedded systems. It uses the current mode switching principle to step down DC input voltages to the desired output voltage and features an integrated rectifier diode, programmable over-current protection, and a Power Good output.