M51996AP データシートの表示（PDF） - MITSUBISHI ELECTRIC
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M51996AP Datasheet PDF : 22 Pages
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FUNCTION DESCRIPTION
Type M51996AP and M51996AFP are especially designed for
off-line primary PWM control IC of switching mode power supply
to get DC voltage from AC power supply.
Using this IC,smart SMPS can be realized with reasonable
cost and compact size as the number of external electric
RUSH CURRENT
PREVENTION CIRCUIT
R1
MITSUBISHI (Dig./Ana. INTERFACE)
M51996AP/FP
SWITCHING REGULATOR CONTROL
parts can be reduced and also parts can be replaced by
reasonable one.
In the following circuit diagram,MOS-FIT is used for output
transistor,however bipolar transistor can be replaced with no
problem.
DC OUTPUT
AC
INPUT
CFIN
R2 CVcc
REG
Vcc
COLLECTOR
VOUT
CLM+
M51996AP/FP
EMITTER
SOFT
GND
DET
OVP F/B T-ON CF T-OFF
RON CF
ROFF
FEEDBACK
OVP
Fig.1 Application example for feed forward regulator
RUSH CURRENT
PREVENTION CIRCUIT
(TL431)
R1
AC
INPUT
CFIN CVcc
F/B
DET
REG
SOFT
Vcc
COLLECTOR
VOUT
CLM+
M51996AP/FP EMITTER
GND
T-ON CF T-OFF
DET
DC OUTPUT
RON CF
ROFF
Fig.2 Application example for fly-back regulator
( 9 / 22 )
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