NEOCORTEC A/S NC2400C1 Manual De Usuario

 

 

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When designing a product that contains the NCxxxx module, there are a few items from 

a System point of view that need to be considered. This section of the document lists 
these items, and where applicable provides recommendations on solutions. 

The NCxxxx module series is designed such that it can be powered directly from a 

single cell battery in the voltage range of 2.0V to 3.6V DC. However, the module 
contains an internal linear voltage regulator, which regulates the voltage down to 1.8V 

for some parts of the system. Supplying the module at higher voltages (above 2.0V DC) 

leads to some level of inefficiency due to the nature of the linear converter.  
Before considering the addition of a Switching Mode Regulator in the supply though, it 

should be noted that the extreme low power capabilities of the NCxxxx module is 

achieved through very low duty cycle. Therefore most of the average current 

consumption stems from the actual sleep mode current of the module. This means that 
the leakage current of the potential Switching Mode DC/DC regulator needs to be very 

low in order not to jeopardize the low Power Consumption.  

The NCxxxx modules I/O voltage levels follow the supply voltage. This means that the 

external controller needs to use the same logical voltage range. 

Even though the average current consumption is ultra low, the module does draw 

current at a higher level in short bursts. This happens when the module is transmitting 
or receiving data or control information (see data sheet for active mode RX and TX 

current consumption). 

The worst-case situation is when the module is performing its Beacon Scan. The 

duration of the individual Beacon Scans is dependent on configuration settings. 
The power supply should stay within the supply voltage range of the NEOCORTEC 

module during the current bursts.

 

When operating the module from a battery supply, it should be noted that some 
batteries will greatly reduce their lifetime when their max rated current sourcing 

capabilities are violated.  

Be careful to select batteries that match both the average current consumption as well 
as the peak current consumption.