TPS54355PWPG4

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PMIC (Power Management Integrated Circuit) is an integrated circuit that combines several power management operations into a single chip, thus eliminating the need for multiple chips. The DC-DC switching regulators (also known as DC-DC converters) are used to convert voltages from one level to another without affecting the frequency.

TPS54355PWPG4 is a DC-DC switching regulator designed particularly for powering low-power applications. The output voltage in this system can be adjusted according to the specifications.

Application Field

The TPS54355PWPG4 can be used in a wide variety of applications, including:

• Data communication applications,
• Robotics,
• Computer peripherals,
• Portable devices,
• Battery packs,
• Medical applications,
• Industrial controllers,
• Automation,
• Audio components,
• Power supplies and
• Point of Load (PoL) tracking.

Working Principle

The TPS54355PWPG4 converter is an integrated voltage converter operating with a fixed frequency operating at 2500kHz. This converter includes an internal high-side power switch, low-side power switch, and low-side synchronous rectifier. It allows for monolithic configuration of a buck regulator solution with a boost converter used for output voltage tracking. This converter operates in either buck, boost, or buck-boost modes by controlling the logic level of the enable pin (EN). The buck regulator allows for the regulation of voltage up to 8V, and the boost regulator allows for the adjustment of voltage up to 17V.

The TPS54355PWPG4 uses the average current mode control (CMC) architecture, which is a method of ripple cancellation. This leads to improved control loop stability and dynamic transient response. This process achieves multi-port powering or “Load Sharing/Load Balancing” via CMC control of the synchronous rectifier switch. When the load demands exceeds the capability of the system, multiple devices can be connected in parallel to share the load current equally.

The TPS54355PWPG4 also contains many integrated protection features to protect the load, such as input overvoltage protection (OVP), overcurrent protection (OCP), over temperature protection (OTP). Additionally, the device has comprehensive options for EMI on both the input and output. All these features, combined with its small form factor and high output accuracy, make the TPS54355PWPG4 ideal for use in a wide range of low power applications.

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