TPS65258RHAT

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The TPS65258RHAT is a low-voltage single inductor dual-output synchronous buck converter DC-DC switching regulator. It provides a highly-efficient small form factor solution for powering both low voltage and high voltage components from a common input supply between 4.5V and 20V. The device is highly integrated and includes an integrated low-side pass FET, high-side pass FET, and a built-in voltage regulator linear regulator. The TPS65258RHAT allows for a wide input voltage range and provides excellent output step-down performance.

The DC-DC converter supports two output channels from a single controller: a high voltage (HV) output and a low voltage (LV) output. The internal high-side and low-side pass FETs enables the linear regulator to switch modes to meet customer needs while simultaneously optimizing the power efficiency. In addition, the TPS65258RHAT also offers a configurable Shutdown and slew rate. The device utilizes a synchronous buck converter to step down the input voltage (VIN) to its output voltage (VOUT) via a single inductor.

The TPS65258RHAT is well suited for applications requiring a synchronous buck converter such as: battery-powered systems, embedded systems, automotive designs, and power management ICs (PMICs). The device is capable of providing a wide range of input voltages from 4.5 to 20V, making it suitable for a variety of battery, voltage regulator module (VRM), and system-wide applications. The device also maximizes efficiency at light and medium load conditions, making it ideal for battery-powered designs.

The working principle of the TPS65258RHAT is based on synchronous buck conversion. It uses a single inductor and two FETs (highside/lowside) to convert an input voltage (VIN) to an output voltage (VOUT). This is implemented in two parts: the high-side and low-side FETs control the current flow from VIN to ground, while the inductor converts energy from the source to the load. The device is capable of providing a wide range of output voltage (from 0.8V - 5.5V). It uses Pulse Width Modulation (PWM) to control the output voltage, and has a switching frequency of up to 2MHz.

In summary, the TPS65258RHAT is a low-voltage single inductor dual-output synchronous buck converter DC-DC switching regulator. It integrates high-side and low-side pass FETs and a built-in voltage regulator linear regulator. The device is well suited for battery-powered systems, embedded systems, automotive designs, and power management ICs (PMICs). It provides excellent output step-down performance and is able to operate over a wide input voltage range (from 4.5V – 20V). The TPS65258RHAT uses a synchronous buck converter to step-down the input voltage to its output voltage via a single inductor, and utilizes Pulse Width Modulation (PWM) to control the output voltage.

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