TPS562200DDCR Integrated Circuits (ICs)

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The Texas Instruments TPS562200DDCR is a high-efficiency synchronous step-down DC–DC regulator module with a wide input voltage range. It is designed to convert unregulated input voltage into regulated outputs at voltages of up to 10V. The module is also capable of delivering output currents up to 8A, a wide operating temperature range, and excellent thermal performance. This makes it ideal for a variety of applications, such as powering applications with wide input voltage range, high efficiency, and high reliability.

Application Field

The TPS562200DDCR is suitable for a range of applications, such as providing regulated voltages for processor core supply voltage, memory supply voltage, and I/O supply voltage in telecommunication and networking applications, automotive electronics, and industrial, medical and consumer equipment. It can also be used as a battery charger in applications such as portable audio and video players, laptop batteries, and digital cameras.

Working Principle

The TPS562200DDCR utilizes a synchronous switching method to reduce the input voltage to a lower voltage output. Synchronous switching is a method of using two switches, an upper and a lower switch, to transfer the energy stored in the inductor current to the output. In the TPS562200DDCR, the lower switch is an N-channel MOSFET and the upper switch is a P-channel MOSFET. These switches operate in a synchronous manner, ensuring that the inductor current is transferred to the output in the most efficient manner.

Operation of the TPS562200DDCR begins with the P-channel MOSFET enabled and the N-channel MOSFET disabled. As the P-channel MOSFET is enabled, the voltage at the output of the inductor increases, storing energy in the inductor. This energy is then transferred to the output of the module as the N-channel MOSFET is enabled and the P-channel MOSFET is disabled. As long as the N-channel MOSFET is enabled, the voltage across the inductor and the output remains in phase, and the voltage at the output of the module is reduced by the amount of the input voltage. The cycle is then repeated, providing a regulated output.

The TPS562200DDCR also incorporates a peak current-limit circuit, over-temperature protection, and soft-start features. The peak current-limit circuit limits the peak current that flows through the inductor and the switches, protecting them from damage. The over-temperature protection activates when the temperature of the module reaches a predetermined level, causing the output voltage to be reduced until the temperature returns to a safe operating range. The soft-start circuit ramps the output voltage slowly over a period of time, minimizing the amount of stress put on the components during start-up.

Combined, these features make the TPS562200DDCR an efficient and reliable DC–DC regulator that is well-suited for a variety of applications. With its wide input voltage range, high efficiency, and excellent thermal performance, the TPS562200DDCR is a great choice for designers looking for a high-performance DC–DC regulator.

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