TPS54122QRHLRQ1

The TPS54122QRHLRQ1 is a high-efficiency DC/DC Switching Regulator from Texas Instruments, belonging to the PMIC – Voltage Regulators – Linear + Switching family. This device features an integrated 85mΩ FET with a fixed frequency of 1.21 MHz and is designed to operate over a wide range of input voltages and output voltage ranges. It is suited for use in LCD TVs, MRI machines, notebook, laptop and cellular applications.

The TPS54122QRHLRQ1 provides a variety of features including a wide-input voltage range of 4.5V to 18V, high peak efficiency of 97.5%, and an integrated MOSFET with maximum peak current capability of over 40A. In addition, the TPS54122QRHLRQ1 can operate in either PWM (pulse width modulation) or PFM (pulse frequency modulation) mode to ensure the best solution for any application. It also features a wide adjustable output voltage range of 0.9V to 6V, and output programming up to 3.3V, providing the flexibility and performance needed for many applications.

The TPS54122QRHLRQ1 application field ranges from automotive, industrial, consumer and healthcare. It can be used specifically for LCD TVs to regulate the input voltage from the internal power supply to the panel; it can be used in MRI machines to convert the high-voltage battery supply to power the radio-frequency (RF) preamp and scanner electronics; in notebook and laptop applications, it can provide the power supplies for 3V and 5V regulators, as well as supplying the power to low-voltage battery-powered DC/DC converters, and in cellular applications, it can be used as a low-loss main power supply.

The working principle of the TPS54122QRHLRQ1 is based on the Pulse Width Modulation (PWM) technique. It is designed with a sophisticated circuit to allow for a fast response to changes in output demand and for high-efficiency operation. The integrated MOSFET is used to efficiently transfer power from the input source to the load. In PWM mode, the MOSFET acts as a switch, which is turned on and off according to the magnitude of the input voltage and the desired output voltage. In PFM mode, the MOSFET’s switching frequency is adjusted according to the load requirements. This technique allows for high efficiency operation, since there is no need for large capacitors or inductors, as in traditional switching regulators.

In conclusion, the TPS54122QRHLRQ1 is a highly efficient and versatile DC/DC switching regulator. It boasts a wide input voltage range of 4.5V to 18V, and an adjustable output voltage range of 0.9V to 6V with output programming up to 3.3V. It can operate in either PWM or PFM mode, providing the flexibility and performance needed for many applications. It is suited for use in a wide range of applications, including automotive, industrial, consumer and healthcare. Its working principle is based on the PWM technique, and its integrated MOSFET allows for efficient power transfer.