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LNK4115D Folha de dados(PDF) 13 Page - Power Integrations, Inc.

Nome de Peças LNK4115D
Descrição Electrónicos  Energy-Efficient, Accurate Primary-Side Regulated CV/CC Switcher for Adapters and Chargers
PDF  22 Pages
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Fabricante Electrônico  POWERINT [Power Integrations, Inc.]
Página de início  http://www.powerint.com
Logo POWERINT - Power Integrations, Inc.

LNK4115D Folha de dados(HTML) 13 Page - Power Integrations, Inc.

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Rev. F 05/18
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Figure 15. Typical LNK4214D and LNK4215D CP Output Characteristic Achieved.
VOUT (V)
IOUT (A)
100%
75%
100%
0
175% 200%
50%
33%
Low Mains
High Mains
VOUTCV(TYP)
IOUTCP(MIN)
IOUTCP(TYP)
IOUT(EXT)
Constant Power
The LNK4214D controller is optimized for fast start-up into loads with
large capacitance. The constant current (CC) pull-up set point of the
VI characteristic is determined by the value of R
CS. The controller
regulates in CC mode until it is above approximately 50% of the
programmed constant voltage (CV) regulation point (set by the values
of R
FB1 and RFB2). It then regulates in a power limited or “constant
power” (CP) mode until the output voltage reaches the CV set point,
at which point it changes to CV mode regulation. The exact trajectory
is dependent on the
input mains voltage.
I
OUT at the point of transition between CP and CV modes, IOUTCP, will be
greater than 57% of I
OUT(EXT) as shown in Figure 15.



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