PTB78560CAS

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DC-DC converters are a type of electronic circuits that convert direct current (DC) from one voltage level to another, providing high power efficiency. The PTB78560CAS is a DC-DC converter that is designed to provide high performance and cost-efficiency in a variety of applications. Here we discuss its application field and working principle.

Application Field

The PTB78560CAS is a single-phase, synchronous rectified monolithic converter designed to provide high efficiency and low switching losses. It is suitable for a wide variety of applications, including:

• Power supplies for industrial robots
• Battery-powered consumer products
• Uninterruptible power supplies
• High brightness LED lighting solutions
• Wind turbine converter systems
• Portable medical devices

The PTB78560CAS has been designed to ensure high power density and reliability in critical applications in these fields.

Working Principle

The PTB78560CAS DC-DC converter works through a synchronous rectification process. This process enables high-power conversion efficiency with low switching losses. The converter uses an external N-channel MOSFET as the synchronous rectification element. The transistor is timing controlled through the PWM signal generated by the integrated PWM current-mode controller. The PWM switch is operated in 180° conduction mode to provide high-efficiency power conversion. The PWM cycle is continuously adjusted at a fixed frequency with a constant duty cycle to maintain output voltage regulation.

The converter integrates over-current, over-voltage and over-temperature protections. The reverse current protection function effectively eliminates the reverse current flow. It also features active soft-start with mechanical stress reduction and high maximum duty cycle, allowing for a wide adjustable output voltage range.

The PTB78560CAS offers improved performance with reduced footprint, making it a valuable tool for industrial automation and battery-powered consumer applications.

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