TPS54350PWPR

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TPS54350PWPR is a synchronous step-down DC-DC converter which is a high current power module integrated with two N-Channel power MOSFETs and an internal fractional divider for providing high output accuracy over line, load and temperature variations. It is a member of Texas Instruments\' QuickSwitch products family, designed for high efficiency and low quiescent current applications. The device is available with 3.3V, 4.5V, 5V, and 12V fixed output voltage options, and provides up to 8A of continuous output current over a wide input range of 2.700V-5.5V. Through a full range of features and synchronous operation, TPS54350PWPR offers excellent cost-sensitive power solution in DCDC voltage regulator applications.

The main application field of TPS54350PWPR is used in mobile, computing and networking applications. It provides reliable power conversion, with low-EMI, miniaturized power solution, by integrating both MOSFET switches and a control IC in a single package, which helps to achieve ultra small form factor and high power density. By regulating the output voltage, it helps to reduce power losses, improve efficiency, and reduce thermal dissipation and Electro-Magnetic Interference (EMI). Moreover, the device has a wide input voltage range of 2.7V to 5.5V, which enables use with various battery types, including Li-Ion, NiMH and alkaline.

The working principle of TPS54350PWPR is mainly based on switching converter, which operates in continuous conduction mode for higher efficiency and improved load transient response. The device is a step-down synchronous DC-DC converter that includes a voltage reference, error amplifier, comparator, ramp generator and two N-channel MOSFETs. A clock signal is used to control the switching frequency of the two MOSFETs, through an internal charge pump controller, which is adjustable from 500 kHz up to 4 MHz. The duty cycle is adjusted with a voltage reference and error amplifier cascaded to the comparator, to maintain the proper output voltage. An external compensation loop is then used to adjust the converter\'s load and line transient response.

The TPS54350PWPR is packaged in a tiny package, making it ideal for space-constrained designs. Low power consumption and high efficiency make it an ideal choice for applications where power consumption must be minimized, from standard voltage regulation to power supply isolation, with over temperature protection, input under-voltage protection, current limit and output tracking. Moreover, the device is RoHS compliant and has a low standby current, which helps to reduce system power consumption even further.

In conclusion, TPS54350PWPR is a small, low-EMI synchronous step-down DC-DC converter, with output current up to 8A and a wide input voltage range between 2.7V-5.5V, designed for various applications in the mobile, computing and networking sectors. Its low-power consumption and high efficiency make it the perfect choice for applications which require low standby power, high power density and maximum efficiency within a small form factor, such as power supply isolation, voltage regulation, and power management.

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