NCP1236B65NBGEVB

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The NCP1236B65NBGEVB (Evaluation Boards - DC/DC & AC/DC (Off-Line) SMPS) is a highly versatile power supply designed for switching mode power supplies (SMPS). It is specifically designed to enable the user to use the same board for multiple applications, such as driving a motor, powering a micro-controller, or supplying power to an electromechanical system. With an adjustable voltage output range, it is suitable for various load configurations and provides flexibility to accommodate the needs of many applications.

The NCP1236B65NBGEVB Evaluation Boards - DC/DC & AC/DC (Off-Line) SMPS use the half-bridge offline topology as its main principle. This topology is the most common for many converter designs, because it provides a simple method to control the output voltage and its required power. The topology consists of a power switch (MQ) and a series diode rectifier (D2), between them a storage element, also known as the output filter capacitor (C1).

The half-bridge can be easily connected to the input voltage, it can operate either in continuous or discontinuous conduction mode. The main components of the circuit are, the power stage which consists of a switching power transistor and a diode rectifier, an output filter, a feedback circuit and a control circuit. The power switch in its most basic implementation consists of an N-type MOSFET connected in series with a diode, they are connected to the power source, it operates under a fixed frequency and its duty cycle is set by the control signals.

The output filter capacitor stores energy during the period when the switch is on, and during the off period, it releases energy to the output. The feedback circuit senses the output voltage and compares it with a reference signal. When the power switch is off, the current flows through the diode. Then, when the switch is on, it stores energy, this energy is then dissipated to the load.

The control circuit is responsible for the PWM control, it consists of a Voltage Source Inverter (VSI), with an internal oscillator and an external power supply. The frequency of the oscillator can be adjusted to accommodate the specific application and load. The VSI provides the necessary control signals to the power stage transistor, as well as other control signals, such as the soft start and the over-current protection. Once the power switch has been triggered, it amplifies the DC signal from the power source, it then modulates the signal into a PWM pulse.

The NCP1236B65NBGEVB Evaluation Boards - DC/DC & AC/DC (Off-Line) SMPS is suitable for a wide range of applications. They are often used in various peripherals such as digital display units, LED lighting, as well as a variety of industrial systems. Their adjustable voltage output makes them suitable for many applications, while the low and stable output voltage ensures the reliable operation of the system. The NCP1236B65NBGEVB also features a low input voltage range, which helps to reduce the risk of overvoltage. In summary, the NCP1236B65NBGEVB is an excellent choice for applications requiring high-density power supplies.

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