TPS75115QPWP

TPS75115QPWP Application Field and Working Principle

The TPS75115QPWP is a high-performance dual-channel, low-noise, low-dropout linear regulator designed to power FPGA, microprocessor and memory core/peripheral applications. It integrates two independent low-dropout linear regulators, each with an adjustable output voltage range of 1.20V to 3.50V. With high power supply rejection (PSRR), and low-noise output voltage, the TPS75115QPWP is an ideal choice for powering sensitive analog circuits. In addition, the TPS75115QPWP features over-current protection, thermal protection and short-circuit protection.

Basic Working Principle

The basic working principle of the TPS75115QPWP is to control the voltage output by comparing the output voltage with a reference voltage and then adjust the voltage until the two values are equal. The reference voltage is provided by the integrated voltage reference, which is typically 1.203 V. A resistive divider is used to feed a sample of the output voltage back to the voltage reference which is compared with the internal reference. Depending on the difference between the two voltages, the error amplifier adjusts the gate of an external N-channel MOSFET, thus changing the voltage output.

Applications Fields

The TPS75115QPWP is a poweful, efficient and robust product which makes it a valuable solution for a number of applications. It is suitable for use in applications such as industrial and telecommunications equipment, base station power systems and atx power supplies. It is also suited for many other applications where a high-performance low-noise, low-dropout linear regulator is required.

Advantages of TPS75115QPWP

• High Power Supply Rejection (PSRR): PSRR typically 85dB@10kHz
• Low Dropout Voltage (V
• Low Noise Output: Low output noise up to 15µV RMS @ 10kHz
• Over-current and Thermal Protection: The TPS75115QPWP features integrated current limit and thermal protection.
• Programmable Output Voltage Range: 1.20V to 3.50V
• High-Efficiency Operation: The device provides up to 95% efficiency at 3.3V output.

Conclusion

The TPS75115QPWP is a high-performance, low-noise, low-dropout linear regulator designed to power FPGA, microprocessor, and memory core/peripheral applications. With a wide input voltage range, high power supply rejection and low output noise, the TPS75115QPWP is an ideal option for powering sensitive analog circuits. The device features over-current protection, thermal protection and short-circuit protection to ensure reliable operation. It is well-suited for industrial and telecommunications equipment, base station power systems, and atx power supplies.