NV890100PDR2GEVB

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The NV890100PDR2GEVB evaluation board enables designers to evaluate and develop switch mode power supplies or off-line AC/DC power systems. This board includes all the necessary components and control signals for the proper operation of a modern power supply. This board is suitable for studying various applications such as lighting, avionics, medical devices, motors, consumer electronics, and others.

The NV890100PDR2GEVB evaluation board consists of a number of components and control signals. The main components are a power factor controller IC, a low voltage switchmode power supply controller, two switching MOSFETs, a power supply filter network, and two pairs of gate drive transformers. The board also provides a number of control signals, such as a Synchronous Rectifier Enable (SRE) signal, an Enable (EN) signal, a Standby (STBY) signal, a memory write enable (MWE) signal, and an over temperature warning (OTW) signal.

The power factor controller IC on the NV890100PDR2GEVB board is intended to be used in an isolated AC/DC power system. It provides a closed loop control to the PFC stage, as well as providing current feedback for the switching MOSFETs. This IC also provides a synchronous rectifier control and a PFC voltage feedback signal for controlling the peak inductor current.

The power supply controller IC is used to control the switching MOSFETs. This IC is configured to provide four different peak current modes: constant current, hysteresis current, peak current limit, and burst current limit. It also provides several safety monitoring functions, including overcurrent and overtemperature protection, and programmable undervoltage lockout. The controller IC also allows for a range of current limiting techniques, including line feed-forward and feed-back current limiting.

The two switching MOSFETs on the board are used to provide the switching pulses for the power supply. The gate drive transformers supply the necessary gate drive voltage to properly switch the MOSFETs. The power supply filter network includes two common mode inductors, a primary Capacitor bank, an output filter, and a transformer. This filter network serves to minimize the amount of noise and other undesired frequencies on the power supply line.

In addition to the components described above, the NV890100PDR2GEVB evaluation board includes a number of connectors, signal pins, and test points. These provide the necessary I/O for the evaluation of the power supply system. The board also contains a MCU with onboard firmware, which provides the necessary interface between the user and the board for setting up, monitoring, and controlling the power supply.

In conclusion, the NV890100PDR2GEVB evaluation board from Digi-Key is an excellent tool for studying and developing off-line DC/DC or AC/DC switch mode power supplies. This board includes all of the necessary components and control signals to enable users to accurately evaluate and develop modern power supplies. The power factor controller IC provides a closed loop control to the PFC stage, while the power supply controller IC provides four different peak current modes. Lastly, the board also includes the necessary connectors, signal pins, and test points, as well as an onboard MCU with firmware, for setting up and controlling the power supply.

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