TPS65321AQPWPRQ1

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PMIC – Voltage Regulators – Linear + Switching

The Texas Instruments TPS65321AQPWPRQ1 (hereafter referred to as the TPS65321) is a PMIC – Voltage Regulator – Linear + Switching part. It is an integrated single-phase buck converter with output connected to a high-FET. The TPS65321 provides an adjustable input voltage range of 1.8V to 5.5V with a maximum output voltage of 3.3V at a current of 3A. It also offers an adjustable output voltage range of 0.5V to 3.3V with a current of 1A.

The main application field of the TPS65321 is powering power-intensive devices like LED lighting, cameras, and wearable electronics. It also provides a suitable platform to power a wide range of applications requiring high efficiency and low noise. The integrated buck converter supports a wide range of applications, such as lighting, cameras, sensors, and similar devices. It can also be used in point of load (POL) applications. The integrated buck converter supports multiple configurations and can be optimized for high efficiency and low noise.

The TPS65321 features a built-in on/off switch, low start-up current and high-current margin, thermal management, BOM optimization and external synchronization. It is designed to be simple to use, cost efficient, and require minimal external components. The device has an internal MOSFET and a high-FET drive, with built-in overcurrent and overtemperature protection.

The working principle of the TPS65321 is relatively simple. It is a single-phase buck converter that uses a high-FET as its output switch. When an input voltage is connected, the controller starts a currentmode control loop that adjusts the switching frequency and the main voltage by using a MOSFET. The reference is the output voltage, which is monitored and regulated by a fixed frequency loop. The switching frequency is set by a phase shift control algorithm, which also adjusts the output voltage. The TPS65321 also has a built-in low resistance FET, which increases efficiency and reduces the output ripple current.

The TPS65321 is designed to operate with very low start-up and no-load currents, which helps it to meet the stringent and low power requirements of low power and wearable applications. Furthermore, the flexibility of the device allows it to be used with different types of power sources, providing excellent performance at different power levels.

In summary, the TPS65321 is a Power Management Integrated Circuit (PMIC) that is capable of providing a single-phase buck converter with a high-FET output connection and adjustable input and output voltage ranges. It is designed to be simple to use, cost effective, and require minimal external components. The integrated buck converter provides a wide range of applications and excellent efficiency and low noise performance.

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