GPD-X303S Series User Manual
CV/CC Crossover Characteristics
Background
The GPD-4303S, GPD-3303S and GPD-3303S
automatically switch between constant voltage
mode (CV) and constant current mode (CC),
according to load condition.
CV mode
When the current level is smaller than the output
setting, the GPD-X303S series operates in Constant
Voltage mode. The indicator on the front panel
turns green (C.V.) The Voltage level is kept at the
setting and the Current level fluctuates according
to the load condition until it reaches the output
current setting.
CC mode
When the current level reaches the output setting,
the GPD-X303S series starts operating in Constant
Current mode. The indicator on the front panel
turns red (C.C.) The Current level is kept at the
setting but the Voltage level becomes lower than
the setting, in order to suppress the output power
level from overload. When the current level
becomes lower than the setting, the GPD-X303S
series goes back to the Constant Voltage mode.
Diagram
Vmax
Imax
Constant
Voltage
Constant
Current
Vout
Iout
22
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