TPS62351YZGT Integrated Circuits (ICs)

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Switching regulators are voltage regulators used to deliver a constant output voltage in applications that require a high current or large current spikes. TPS62351YZGT is a DC-DC switching regulator module (SRM) that operates in one of two configurations: Buck Mode and Boost Mode. In Buck Mode, the regulator lowers the input voltage down to a desired level and in Boost Mode, the regulator boosts an input voltage to the desired output level. In both cases, the regulator maintains a constant output voltage regardless of changes in current demands.

Operating Principle

The TPS62351YZGT uses an Internal Synchronous Rectifier (ISR) circuit to control the output voltage. Its switching frequency is fixed at 1.2MHz and its operating current is determined by the external resistors. In Buck Mode, the SRM initially turns on the internal MOSFET and charges the output capacitor with the peak current. When the output capacitor is nearly charged, the SRM turns off the internal MOSFET, which switches the ISR circuit ON. The ISR then conducts the remaining current and the output voltage drops to the desired level.

In Boost Mode, the SRM initially turns on the internal MOSFET and charges the output capacitor with the peak current. When the capacitor is near its voltage limit, the SRM turns off the internal MOSFET which switches the ISR circuit ON. The ISR then conducts the remaining current and the output voltage rises to the desired level.

Key Features

• High Efficiency Synchronous Rectifier Design
• Fixed 1.2MHz Switching Frequency
• Output Current of up to 3.4A
• Selectable Buck/Boost Mode
• Compact DFN-6 Footprint
• Internal Thermal Feedback
• Integrated Soft Start
• Operating Temperature Range: -40°C to +125°C

Application Fields

The TPS62351YZGT is a highly integrated DC-DC converter module designed for applications that require a regulated output voltage. It is particularly well-suited for portable electronic devices such as mobile phones, handheld and portable gaming devices, and digital still cameras.

The module is designed to minimize power consumption and improve power efficiency, making it ideal for low-power devices. Thanks to its high output current, the module can also be used in high-powered applications, such as frequency converters, high-end audio equipment, and electric vehicles.

Conclusion

The TPS62351YZGT is an efficient, high-current DC-DC converter module designed to provide reliable power in a variety of applications. With its fixed switching frequency, integrated soft start, and internal thermal feedback, it is well-suited for both low-power and high-powered applications.

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