TPS72015DRVT Integrated Circuits (ICs)

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TPS72015DRVT: Application Field and Working Principle

The TPS72015DRVT voltage regulator from Texas Instruments is a low-noise, low-dropout, high PSRR (power supply rejection ratios) linear regulator designed for use in high performance audio, communication, and computer systems. It is available in a small 8-lead VSSOP package, making it suitable for power management in space-constrained applications. Furthermore, the 1.8V to 5.5V input voltage range, the 0.6V to 1.5V adjustable output voltage range, and the 1 A maximum output current make it an ideal solution in many applications.

Features

• Input voltage range: 1.8V to 5.5V
• Output voltage range: 0.6V to 1.5V adjustable
• Maximum output current: 1A
• Low-noise, low-dropout, high PSRR
• Available in 8-lead VSSOP packages

Applications

• Processing system power
• Audio subsystem power
• Automotive electronics
• Robotics and machine vision
• Medical and safety systems
• Communication systems
• Baseband power for FPGAs and ASICs
• Digital signal processors
• CompactPCI, VPX and AMC cards

Working Principle

The TPS72015DRVT utilizes the charge-pump concept where two parallel filters operate one of two equivalent switches at the output. By connecting the two switches in opposite directions, a charge pump is created that removes all power components from the output voltage. This ensures a fast transient response, low noise, and low output voltage ripple. The input capacitor eliminates internal bias currents and current spikes, while the output capacitor reduces output noise and serves as a filter to reject transients and noise. The control loop inside the TPS72015DRVT is based on an advanced low noise amplifier with an high PSRR and low noise configuration that provides an excellent line and load regulation over the whole input voltage range. Gain compensation is set at 10 mV/Vs. Low output voltage ripple is obtained through an internal voltage divider and an external capacitor.

The TPS72015DRVT operates in current-limit mode and short-circuit protection input. In addition, the device features a high accuracy disable function which allows the output to be turned off or on. An internal delay allows the output to be turned on after a typical 6 ms delay.

Conclusion

The TPS72015DRVT offers excellent features for a low noise, low-dropout linear regulator for applications such as processing system power, audio subsystems, automotive electronics, robotics, and machine vision. Its adjustable output voltage range from 0.6V to 1.5V, 1A maximum output current, high PSRR, and low input voltage range make it an ideal solution for applications requiring small size and low noise. The device\'s high efficiency and low noise also ensure that it performs well even under challenging conditions.

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