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DC DC Converters

A DC-DC converter is an electronic circuit that converts a source of direct current (DC) from one voltage level to another and is sometimes referred to as a voltage step-down, voltage regulation or voltage regulator. This can be used to power systems using different output voltages from the same input voltage. A DC-DC converter can also be used to regulate the load voltage with respect to the output voltage from a system.

PTN78020WAH is a high efficient DC/DC converter from Toko. It is an isolated, wide input voltage range, TOPSwitch�-GX based non-isolated, 3W DC/DC converter. It offers from 2.2V to 5.2V adjustable output with a 5V/3A input. The unique feature of the PTN78020WAH is that it uses a control circuit to adjust the output voltage automatically to adjust for changes in the input.

The applications of PTN78020WAH are to provide efficient and reliable power conversion for a variety of consumer and industrial applications such as consumer electronics, automotive, industrial automation, HVAC, solar, telecom, and medical equipment as well as other energy storage and control systems.

The working principle of PTN78020WAH is quite simple. It works on the principle of Step-Down control. PTN78020WAH draws current from the input source and steps it down to an adjusted voltage. The output voltage can be set by the adjustable resistor provided on the board. The integrated control circuit ensures that the output current and voltage remains constant even when the input voltage or load conditions change.

PTN78020WAH has an integrated power switch to control power flow, an internal power limiting circuit to protect the converter against overload conditions, an integrated current sense loop for accurate current limiting as well, and an adjustable soft-start for inrush current limiting. The converter also offers programmable thermal shut down protection.

PTN78020WAH is one of the most efficient DC to DC converters in its class which makes it ideal for applications such as portable electronic devices, power over Ethernet (POE), and energy harvesting. Its high efficiency and wide input voltage range make it an ideal choice for applications which require high efficiency and reliable power conversion.

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