EVIX-CX3AA IXYS-DIRECTED ENERGY, EVIX-CX3AA Datasheet - Page 4

• Manufacturer Part Number: EVIX-CX3AA
• Description: Solar Charger Evaluation Board
• Manufacturer: IXYS-DIRECTED ENERGY

Specifications of EVIX-CX3AA

• Silicon Manufacturer: IXYS Solar
• Silicon Core Number: XOB17-12x1
• Kit Application Type: Power Management - Battery
• Application Sub Type: Battery Charger

In the opposite sense, the charge rate capacity is the ability to supply current (power) over
time to the battery. Trickle charging of alkaline cells is usually done at 0.1C or less. The
EVIX-CX3AA evaluation board charges with a maximum current of about 40 mA
to direct bright sunlight (1 Sun),
hours to charge.
There are a number of battery chemistries available in AA size packages, but we
recommend using the rechargeable alkaline cell supplied with the evaluation board for best
performance
Circuit Operation and Description of Components
Circuit Operation
Figure 3 is the schematic diagram of the evaluation board. The board contains three solar
cells to provide charging power. A power MOSFET prevents the battery from
through the solar cell array during low light conditions when the solar array output voltage
sinks below the battery voltage.
on when light is present. A resistor in parallel with the CPC1832N prevents the gate from
accumulating charge and partially turning on in very low light conditions.
.
Fig. 3 Schematic Diagram
A
so a 1000 mAh battery will require 1000 mAh/40 mA or 25
CPC1832N
-4-
micro power solar cell turns the MOSFET
SOLAR
SOLAR
discharging
if exposed