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TPS650830ZAJT Application Field and Working Principle

The TPS650830ZAJT is a synchronous buck converter and PMIC specially designed for low-power ASICs and other microprocessor-oriented applications. It integrates two power rails in a single output, one 3.3V or adjustable 0.8V rail and one adjustable output rail. This PMIC is designed to support a wide range of input voltages, typically 3V to 15V, and is capable of delivering up to 4A of load current into a 3.3V output. The device has a wide range of features, including output current monitoring and adjustable slew rates, as well as an on-board temperature monitor, power-on reset and fault detector.

Overview

The TPS650830ZAJT is a single-output synchronous buck converter and PMIC combination device. It combines two voltage rails in a single output, one 3.3V or adjustable 0.8V rail and one adjustable output rail. It is designed to provide power efficiency and flexibility for low-power ICs, microprocessors, and other microelectronic systems. The device offers a wide input voltage range, typically from 3V to 15V, and is capable of delivering up to 4A of load current into a 3.3V output. The device contains adjustable current loop, voltage loop and slew rate control, as well as an output current monitoring and reset circuitry. The device also has an integrated temperature monitor, which can sense temperature rise and can be used as an additional control method for power efficiency.

Features

• Wide input voltage range from 3V to 15V
• Dual output voltage rail: 3.3V or adjustable 0.8V and adjustable output power rail
• Output current up to 4A
• Adjustable current loop and voltage loop
• Adjustable slew rate
• Output current monitoring, reset and fault detector
• On-board temperature monitor
• Power-on reset

Applications

• Low-power ASICs and other microprocessor-oriented applications
• Data communications systems
• Battery-powered systems
• Point-of-load, power-on reset and fault detection
• PoE and similar solutions
• Industrial and consumer electronic applications
• AC to DC power conversion
• Solar operation

Working Principle

The TPS650830ZAJT is a synchronous buck converter and PMIC specially designed for low-power ASICs and other microprocessor-oriented applications. It integrates two power rails in a single output, one 3.3V or adjustable 0.8V rail and one adjustable output rail. The device uses an adjustable constant-current control loop to dynamically regulate the output current demand, while a voltage loop accounts for voltage droop during heavy loads. Using adjustable slew rate control, the device can respond quickly to load changes while avoiding surge currents that could damage the microprocessor.

The TPS650830ZAJT is also equipped with an on-board temperature monitor and power-on reset circuitry. The temperature monitor can detect thermal overloads and signal the regulator to limit its current output to a maximum safe level. The power-on reset circuitry will guarantee a reliable start-up for the device. Finally, the device contains an output current monitoring circuit that measures the output current of the device and will trigger a fault signal to indicate an overcurrent event.

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