IFX30081LDVGRNXUMA1 Integrated Circuits (ICs)

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IFX30081LDVGRNXUMA1 Application Field and Working Principle

Power Management Integrationics(PMICs) offer a complete, integrated solutionfor voltage regulation and power management functions of system andsubsystems in low voltage, embedded space restrictions and power efficientapplications.The IFX30081LDVGRNXUMA1 is one of many PMICs classified asvoltage regulators and linear type.

Application Field

The IFX30081LDVGRNXUMA1 is an Integrated Linear Regulator Controller compatible with Intel\'s Mobile Voltage Regulator Design Guide and Intel\'s VRD12.5 specification.It is suitable for applications such as desktop and mobile processors, graphic cards, or embedded systems. It offers the functionality of voltage and current regulation, providing highest efficiency and fast transient respone, all of which can increase system performance and reduce system power.

IFX30081LDVGRNXUMA1 Features

The IFX30081LDVGRNXUMA1 is designed with the following features:

• Temperature range support of -40°C to 130°C
• Regulated output voltage with a range of 0.88V to 3.465V
• N-FET on- and off-time adjustment
• Dynamic/Static VID interface control
• Programmable current limit interface control
• Power fine and coarse adjustments via externalresistors
• External ramp compensation
• Direct connect for dynamic VID mode
• Type 2 single and dual-phase operation support
• Overvoltage and undervoltage lockoutprotection
• Dual-phase operation in one package
• Output overcurrentprotection with cycle-by-cycle current limit and hiccup mode
• Programmable soft-start with external capacitor
• Over-temperature and over-currentprotection
• Sequential start for multiple/parallel converter configurations
• On-chip CLK oscillator and Phase-Lock Loop (PLL) for synchronization
• Programmable multi-phase operation

Working Principle

The IFX30081LDVGRNXUMA1 Linear Regulator Controller integrated circuit (IC) is composed of differential amplifier, clocked switch and oscillator circuitry, output driver stage, error amplifier, current limit driver, over-voltage protector, and all the necessary logic to implement Intel\'s VRD12.5 specification.The basic working principle is to generate a regulated output voltageby turning the N-FET switch on and off based upon the input voltageand output voltage. The output voltage is generated by a nonsynchronous buck topology.The input and output voltages are compared by the differential amplifier.When the input voltage is greater than the feedback voltage, thecurrent is increased, resulting in a decrease in the output voltage.When the input voltage is less than the feedback voltage, the current isreduced, resulting in an increase in the output voltage. The internaloscillator sets the rate at which the N-FET switch is turned on and off,which is typically 20 KHz.

The IFX30081LDVGRNXUMA1 Linear Regulator Controller also features a programmable current limiter which is used to protect the load against an output over-current condition. The controller monitors the output current and shuts off the N-FET switch when the programmed current limit is reached. The N-FET switch is re-enabled when the load current falls below the set limit.

The IFX30081LDVGRNXUMA1 Linear Regulator Controller is designedwith various protection features to protect the power supply and the loadagainst fault conditions.For instance, an overvoltage lockout feature limits the output voltageto a predetermined level.The device also includes an over-temperatureprotection feature which will trigger the N-FET switch off in case of excessive temperatures.

The IFX30081LDVGRNXUMA1 Linear Regulator Controller features asequential start mode which allows for system configuration with multiple parallel converters.The sequential start sequence allows each converter to start individually and eliminates the need for a single point-of-failure (SPOF) power supply.

Conclusion

The IFX30081LDVGRNXUMA1 is a versatile,stability-focused linear regulator controller that offers a completepower management solution.It is designed to meet the stringentrequirements of Intel\'s Mobile Voltage Regulator Design Guide and Intel\'s VRD12.5 specification.The device offers optimal performance in terms of voltage and current regulation, temperature range support, programmable current limit,overvoltage and undervoltage lockout protection features, sequential start mode, and numerous other features.

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