NCP1402V27EVB

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NCP1402V27EVB is an evaluation board designed for DC/DC & AC/DC (Off-Line) SMPS applications. The board provides an efficient solution to evaluate the characteristics and performance of the NCP1402 PWM controllers. It is a low cost board that incorporates the NCP1402 PWM controller IC, heatsink for the power FETs, optocouplers and other components required for a complete low power off-line flyback power supply.

The board uses a NCP1402 PWM controller that utilizes a mixed-mode control to directly drive high voltage MOSFETs up to 700V without needing an external driver. It employs an inline programmable active peak reduction (APR) feature that enables it to achieve improved EMI performance compared to traditional valley current control techniques. The NCP1402 also has a highly efficient current mode control that reduces the size of the output inductor, as well as improves the overall power efficiency.

The NCP1402V27EVB comes with a range of features such as self-start protection, variable voltage and frequency operation, active power factor correction, as well as an adjustable soft start. It also has a power input range of up to 70VAC. The board has an output voltage of 27.5V and has a 2.0A minimum rated current. It has a 500kHz switching frequency and has an operating temperature range of up to 70°C.

The operating principle of NCP1402V27EVB is relatively simple. It uses a pulse width modulated control circuit to control the duty cycle of the power switches. The duty cycle is adjusted so that the output voltage is regulated to the desired level. The board utilizes a multi-mode control technique, which allows it to provide better overall power efficiency. It also has an adjustable soft start feature, which allows the power supply to start slowly and not overshoot the output voltage, making it suitable for applications which require a stable power supply startup.

Overall, the NCP1402V27EVB is an efficient and cost-effective DC/DC & AC/DC (Off-Line) SMPS evaluation board. It is compact, reliable, and provides excellent performance in a range of low power applications. The board is suitable for use in medical, telecommunications, and automotive environments, and is suitable for testing various types of off-line SMPS topologies.

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