The MSC is a monitored solar regulator providing a configurable stable output voltage (or optionally a +5V output on a standard female USB connector).
The HW2.x version is an upgrade of the HW1.x version. The two sub-boards were split in 2 PCB. The PB is the power board.
See MSC_HW2-0_MB project for the monitoring board:
NOTE : this version is not compatible with any monitoring board (MSC_HW2-x_MB), because the monitoring interface is at high voltage (the connector only gather the raw voltages for external use). Indeed, the board does not provide the resistor dividers for voltage monitoring and does not embed the current sensor circuit.
NOTE : Since this board does not embed any monitoring circuitry, it is smaller than the HW2.1 version (3U instead of 4U). The power circuit is the same and works fine on both versions).
See MSC_HW2-1_MB project for using with monitoring board:
Below is the functional block diagram of the board.
The table recaps the board ratings.
|Output voltage||VOUT||0.8||(VIN - 2)||V|
Output voltage regulation
The voltage regulation is performed by a DC-DC converter. The output voltage is configurable through a resistor divider placed on the feedback pin.
The converter can be configured to start when the input voltage rises above a certain threshold and hysteresis (programmable through a resistor divider), avoiding power on issues. It also can be controlled through an external enable signal.
A 5A fuse and a TVS diode protect the output against overvoltage and overcurrent.
VIN and VOUT voltages are linked to the monitoring connector for external use. A series shunt resistor can also be placed at the output, to measure the output current with an external circuit.