Evaluation Board | NCP737ADNADJR2GEVB

NCP737ADNADJR2GEVB evaluation board serves for quick evaluation of NCP737 part in MSOP-8 package. Board is assembled by adjustable part version and it is compatible with all fixed device versions as well as. The output voltage of the adjustable LDO is set by variable resistor (RT1) in two ranges set by jumpers (VOSEL1 & VOSEL2), the process is described at the schematic document. For proper LDO operation the input and output capacitors are already populated on the board and optional additional capacitors could be assembled to their spare places. All power and control signals lead to soldering pads for easy connection. Input, output and ground signals are doubled, one of each is for power connection (force) and one for measure connection (sense). For enable pin control there is a EN-SEL jumper which can set EN pin high, low or connected to external source at EN pad. RPG-EN jumper enables/disables PG pull-up resistor connection from LDO’s PG to OUT signal. From thermal point view, the board is composed of 2 Cu layers, 1oz thick and all layers contain 650mm2 ground cooling areas. These cooling areas are surrounded by non-Cu ring which isolate the heat at the cooling areas from the other board parts. There are also three rectifying diodes spare places which could behave as on-board temperature sensors (not assembled on default). Next to this, there are three spare places for SMB connectors for input, output and EN signals.