PT6461C

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DC-DC converters are very common in many electronic applications, ranging from large industrial and commercial applications right down to very simple consumer applications. The most common type of converter is the PT6461C, which is used in a wide range of applications, including LED lighting, photovoltaics, and general electrical power systems. This article will look at the application field and working principle of the PT6461C.The PT6461C is a DC-DC Converting System from National Semiconductor, typically used for low power applications such as LED lighting and photovoltaics. It is a non-isolated converter, meaning it does not require an isolation transformer. It has a wide input voltage range of 6V to 14V and can operate from either DC or AC power sources. The output voltage is adjustable from 6V to 12V, with up to 2A output current.The PT6461C is designed to convert the input voltage into the desired output voltage. The main components of the device are the power switch, a rectifier which generates an intermediate voltage and a pulse width modulator (PWM) to regulate the output. The power switch takes the input voltage and passes it through a rectifying diode to generate a high intermediate voltage which is then regulated by the PWM. The output voltage is then regulated by the feedback loop in the circuit, making sure it is always the same as the input.In order to regulate the output voltage, the PT6461C switches the rectifier on and off at very high frequencies. This results in a high accuracy and efficiency, as the switching losses are minimized. The switching frequency is typically between 100kHz and 700kHz, depending on the application. The output current can be set to between 0A and 2A.The PT6461C is a highly efficient converter, with up to 95% efficiency depending on the load and input voltage. It is also designed to be robust and has built-in protection against over-temperature and over-voltage conditions, making it reliable in tough environments.In conclusion, the PT6461C is a DC-DC converter designed for low power applications such as LED lighting and photovoltaics. It is a non-isolated converter which can operate from either DC or AC power sources, with a wide input voltage range of 6V to 14V and adjustable output voltage of 6V to 12V, up to 2A. The device is highly efficient and designed to be robust, making it ideal for a wide range of applications.

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