NCP1406V25GEVB

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The NCP1406V25GEVB is a popularly used evaluation board for DC/DC & AC/DC (Off-Line) SMPS. It is capable of providing an economical solution for designing, testing and running high power, high efficiency off-line DC/DC power converter systems. This device contains an integrated boost controller and integrated high voltage half bridge driver, operating from ground level. 

The NCP1406V25GEVB is particularly suitable for applications in the range of 10W to 70W, with up to 40V DC output. It operates from a single supply input of anywhere between 7V and 40V. The device supports up to 40V external output for a wide range of applications that require higher output voltages and currents. This device is packaged in an 8-pin SOP for an easy integration into a wide range of applications.

The NCP1406V25GEVB application field and working principle are rather simple. The device contains a high frequency synchronous Buck-Boost power stage, with the high voltage half bridge driver integrated. A single pulse-width modulation (PWM) signal from a microcontroller or other logic device, is used to control the average output voltage and output power. The device is fully protected against overvoltage, current overload, short-circuit and overtemperature conditions. 

The NCP1406V25GEVB provides the following features:

• Small size with integrated high voltage half bridge driver
• Simple development process with 12+ NCP1406 pin-compatible devices
• High voltage half bridge up to 40 V VCC
• High efficiency, low quiescent current
• Wide input voltage range (7 V - 40 V)
• Output power up to 70 W
• High efficiency up to 95 %
• Protection features: overcurrent, overtemperature, short circuit

The basic working principle of the NCP1406V25GEVB is an application of pulse-width modulation (PWM) to the gate drive of a half bridge or synchronous Buck-Boost (or SEPIC) power stage. In its simplest form, the output voltage is controlled by manipulating the width of the PWM signal applied to the high voltage half bridge driver. The PWM output is simply proportional to the duty cycle, with respect to the clock cycle of the PWM.

The NCP1406V25GEVB is an excellent choice for a wide range of DC/DC & AC/DC (Off-Line) SMPS applications. The integrated boost controller and integrated high voltage half bridge driver make it possible to design efficient, cost-effective and reliable power solutions. This device is ideal for small to medium power, up to 70W, and applications requiring up to 40V DC output.

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