PT5028M

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DC DC Converters

The PT5028M is a DC DC converter that provides reliable isolated power from an unregulated input source, such as a battery or an AC adapter. The power supplies have a wide input voltage range and are fully protected against reverse voltage, high peak current, and over-temperature. The output voltage is regulated to within 1%.

Application Field

The PT5028M is a great choice for portable, telecom, computing, medical, and industrial applications that require a reliable and isolated power source. It is ideal for isolated power supplies, bus converters, hot-swap controllers, and embedded systems. The converter can handle high inrush currents on the input, and has a wide operating temperature range.

Working Principle

The PT5028M uses a combination of pulse width modulation (PWM) and pulse frequency modulation (PFM) techniques to achieve a low output voltage ripple and high efficiency. It employs a unique buck-boost topology which allows for the output voltage to be above, below, or equal to the input voltage rail. The output voltage is regulated by an internal control loop, which compares the output voltage to a reference voltage and adjusts the PWM duty cycle accordingly.

The converter is composed of several key components. The input section contains an input capacitor and an inductor, which provide input filtering and energy storage. The output section has a diode, a power switch, a control switch, and an output capacitor, which regulate and filter the output voltage. The converter also has a controller, which includes the control loop and PWM generator.

The converter is housed in a 9.7mm x 11.5mm x 3.2mm package. It has a low power dissipation created by the PWM modulation, which leads to longer system life and reduced system temperatures. The converter also has a wide range of output currents and provides intelligent power monitoring and protection.

The PT5028M is an efficient and reliable DC-DC converter that is suitable for a variety of applications. It provides efficient power conversion and can be easily implemented into an existing system. The converter is highly integrated and compact, and its high efficiency makes it an attractive choice for battery-powered applications.

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