TPS51624RSMT

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PMIC (Power Management IC) is a wide umbrella category, and voltage regulators (VR), which use one form or another of electronic circuitry for providing a regulated output voltage, are one of its key components. In this article, we will focus on special purpose voltage regulators and, in more specific terms, introduce the TPS51624RSMT, a synchronous step-down dc-dc converter.

First, let’s look at the application field: the TPS51624RSMT is designed for high-performance application processor and connectivity power rails. This device is ideal for powering multiple CPUs, advanced graphics controllers and ASICs, memory modules, and other digital ICs found in consumer electronics applications. It also provides system, power sequencing, and power distribution capabilities required in performance processor applications.

When it comes to the operating principle, the basic idea behind the TPS51624RSMT is to use an internal pulse width modulation (PWM) control circuit for efficient and smooth regulation of the output voltage. The PWM switching circuit is driven from an external clock that is provided from the system oscillator. This chip features three external control pins – Vinp, Vinn, and EN, providing the user with flexibility and dynamic control of both the input/output voltage.

The EN pin turns the device on and off. When the chip is turned on, the PWM control logic will regulate the output voltage to the desired level. When the chip is turned off, the PWM control logic will continue to keep the output voltage regulated, but it will be set to the minimum level. The Vinp and Vinn pins control the input voltage and the output voltage, respectively.

The TPS51624RSMT supplies up to 2A of continuous current at output voltages down to 0.6V, and is easily configured to offer best-in-class efficiencies. It also allows the user to select between two different operation modes: PFM mode and Auto-PFM mode. In Auto-PFM mode, the device will only switch at high load currents and operate in a more efficient PFM mode at very light loads, leading to improved battery life and higher efficiency.

In addition, the TPS51624RSMT provides users with a variety of protection features including over-temperature protection, over-current protection, and short-circuit protection. These protections can be utilized to help protect the IC from unexpected variations in load and operating conditions.

In summary, the TPS51624RSMT is a synchronous step-down dc-dc converter designed for high-performance applications. It uses an internal PWM control circuit to regulate the output voltage, and it provides protections against over-current, over-temperature, and short-circuit. In addition, it allows the user to select between two different operation modes: PFM and Auto-PFM. All of these features make it a great choice for powering multiple CPUs, advanced graphics controllers and ASICs, memory modules, and other digital ICs found in consumer electronics applications.

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