NCP5252GEVB

NCP5252GEVB, offered by ON Semiconductor, is an evaluation board used to demonstrate the features of the NCP5252 Green Mode PWM Controller. It implements an off-line DC/DC converter such as a half-bridge power factor controller (PFC) or a two-switch flyback PWM controller. It is meant to save system power by reducing its input power consumption through improved system efficiency and reduced off-state power.

 

The board contains a power component of ON Semiconductor NCP5252 as an active part and several passive components. The supply voltage range is from 90 - 264 Vac for AC input and 20 - 30 Vdc for DC input. It is optimized to operate with up to 300 Vdc input for high power applications, but its voltage range can be expanded further when needed. The board is also capable of providing up to 150W output power.

 

The NCP5252GEVB offers features which help designers to reduce system power. It comes with a full-on-mode flyback PWM controller as well as several protection features like maximum power protection and overvoltage protection. These features help reduce the load stress on the power supply module and prevent it from getting damaged. It also has a proprietary green power mode which helps reduce the input power consumption.

 

The board works on a principle of pulse width modulation (PWM). ON Semiconductor NCP5252Green Mode PWM Controller uses two outputs to generate pulse width modulation. The first output, named GATE, is controlled based on the output voltage. The second output, named MODE, is used to control the system’s efficiency and to trigger the green power mode.

 

The board uses a high switching frequency of around 250 kHz and peak current control to provide high system efficiency while maintaining a small size. It also comes with a diagnostic LED which helps to identify the board status. This LED will turn green when the power supply is running properly.

 

The NCP5252GEVB evaluation board is used in a variety of off-line power supply designs including power factor correction, two-switch flyback, half-bridge and single-step forward. The board has been tested for application in different designs including Simple AC/DC converter, Isolated AC/DC converter and 4-switch buck-boost PFC converter.

 

In conclusion, the NCP5252GEVB evaluation board is a great choice for any designer looking to minimize system power consumption and improve its efficiency. It is an off-line DC/DC & AC/DC (Off-Line) SMPS evaluation board with features like green power mode and maximum power protection. The board works on a principle of pulse-width modulation and provides a switching frequency of up to 250 kHz. It also provides a diagnostic LED to identify the board status. Any designer looking for power savings should consider this excellent evaluation board.