TPS62172QDSGTQ1 Integrated Circuits (ICs)

TPS62172QDSGTQ1 Application Field and Working Principle

The TPS62172QDSGTQ1 Voltage Regulator is an integrated DC-DC switching regulator. It is a high-performance DC-DC buck regulator featuring precision regulators, an SVM inductor current sensing, and a highly accurate dropout voltage. The device offers excellent transient response, fast line and load transient response, low dropout voltage and low output ripple.

Key Features and Specifications

• Input Voltage from 2.7V to 5.5V
• Output Current up to 3A
• Output voltage tolerance of ±1%
• Dropout voltage at maximum load of 1.15V
• 51mV ripple/peak-to-peak @3A
• Efficiency up to 90%
• Switching frequency up to 2MHz

Application Field

The TPS62172QDSGTQ1 DC-DC switching regulator is ideal for high current and precision regulated outputs. Applications that benefit from this device include cellular phones, digital still cameras and data communications. Additionally, the device can be used in High Frequency Battery Charger, DC-DC Converter, USB Power Bank, LED Lighting, and USB Charging applications.

Working Principle

The TPS62172QDSGTQ1 DC-DC switching regulator is a high-performance, integrated, precision DC-DC switching regulator. It operates in two stages. The first stage regulates the input voltage, which is generated by an external rectifier, to achieve the desired output voltage. The second stage is a closed-loop, pulse width modulation (PWM) regulator, which provides the accuracy and low output ripple noise desired by the application.

The PWM regulator performs the following functions: it monitors the output voltage, senses the current flowing through the inductor, and governs the switching. The result is a stable output voltage over a wide input range and the ability to track the regulation of input voltage over several millivolts. The PWM regulator also has an internal soft-start ramp, which quickly sets the output voltage without inrush current.

Conclusion

The TPS62172QDSGTQ1 DC-DC switching regulator is a compact, high-precision, integrated device that is ideal for high-current and precision regulated output applications. Its high efficiency, precision regulation, low dropout voltage and low output ripple are an excellent fit for those needing a high performance, reliable voltage regulator.