L36SA3R315NRFA

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DC-DC converters are an important component in power supply systems. The L36SA3R315NRFA converter is one of the most commonly used and versatile converters in the industry. This application note describes its application field and working principle.

The L36SA3R315NRFA converter is a DC-DC switching step-down converter capable of providing an output voltage of 2.5V to 6V of adjustable voltage. It is mainly used in industrial applications such as distributed power networks, high-speed motor drives and other non-isolated power applications. Its wide voltage range makes it suitable for various voltage levels, which can reduce the number of components in the system.

This converter has two stages: an rectifying-filtering circuit and a constant-voltage-limit power stage. In the rectifying-filtering circuit, the secondary of the transformer rectifies the AC power and outputs DC power. The capacitor is then used to filter and store the input voltage. In the second stage, the PWM control circuit is used to control the switch and the output voltage, and the voltage is continuously adjusted to the required value.

When the output is required to exceed the rated voltage, the two stages make up the constant-voltage-limit power level, which is composed of the bridge rectifier circuit for rectifying and filtering, the constant-current peak limiter circuit trying to keep the output constant current and short-circuit protection circuit.

The circuit features a power efficiency up to 94%, overload protection, and active Bluetooth remote control. It has a wide input voltage range of 12V-36V and can operate from temperatures ranging from -40°C to 85°C. Its low output ripple, low thermal resistance, and high reliability make it ideal for use in high-precision occasions. Finally, the switching power stage of this converter is composed of a rectifying-filtering circuit working on the peak current limitation.

In conclusion, the L36SA3R315NRFA converter can be used in a variety of industrial applications that require high-precision and reliable DC power supplies. It features high power efficiency, low ripple and temperature as well as wide input voltage range. The two-stage power supply structure and active Bluetooth control make it an ideal choice for high-precision applications. Its low cost and high efficiency make it an attractive choice for many applications.

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