CN3063/CN3065/CN3722 Solar charge management chip selection

PublishTime：2022-10-20

●Photovoltaic cells (solar cells) are generally composed by the p-n junction, the p-n junction in the light (photons) lead to the re-combination of electrons and holes to generate electricity. A simplified model of the p-n junction is the characteristics of diode, we generally to the circuit shown in Figure 1 as a photovoltaic cell characteristics.
●Current source IPH produce the current and photovoltaic cells is directly proportional to the brightness. When no load is connected photovoltaic cells, almost all the current flows through the diode D, whose forward voltage determines the photovoltaic cells of the open circuit voltage (VOC). The voltage will vary due to the different characteristics of various types of photovoltaic cells. However, for most silicon photovoltaic cells, the voltage is between 0.5V to 0.6V, which is also a pn junction diode forward voltage.
●Actual PV cell parallel resistance (RP), leakage current is very small, and the RS will produce a connection loss. Because of the series resistor (RS), the voltage will be slightly decreased. Sometimes, however, through the internal diode current is too small to cause enough bias voltage across the diode will be a sharp decline with increasing load current. Finally, if all the current only flows through the load without flow through the diode, the output voltage will be zero. This current is called the photovoltaic cell short circuit current (ISC). ISC and VOC are the main parameters of the photovoltaic cells. Therefore, the photovoltaic cells is that the current limit “type power supply”, its output voltage will decrease with the increase of the output current and load current reaches the short circuit current is reduced to zero.

Brand of Product：	consonance-elec
Part#：	CN3063 、 CN3065 、 CN3722 More Part#
Product Category：	Solar charge management chip More
Application：	More
Data Type：	Technical Documentation More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：
Language：	English Chinese Chinese and English Japanese
Date of Creation：	2012/2/13
Version Number：	Rev 0
Data Encoding：
Data Size：	78 KB

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