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NCP1200D100R2GONN/a37500avaiPWM Current-Mode Controller for Low-Power Universal Off-Line Supplies
NCP1200D40R2GONN/a253avaiPWM Current-Mode Controller for Low-Power Universal Off-Line Supplies
NCP1200P40GONN/a3000avaiPWM Current-Mode Controller for Low-Power Universal Off-Line Supplies
NCP1200P60GONN/a3520avaiPWM Current-Mode Controller for Low-Power Universal Off-Line Supplies
NCP1200P100GON Pb-freeN/a329avaiPWM Current-Mode Controller for Low-Power Universal Off-Line Supplies


NCP1200D100R2G ,PWM Current-Mode Controller for Low-Power Universal Off-Line SuppliesMAXIMUM RATINGSÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁRating Symbol Value UnitsÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ..
NCP1200D40R2 ,PWM Current-Mode Controller for Low-Power Universal Off-Line SuppliesON Semiconductor14, rue Paul Mesplé – BP1112 – 31035 TOULOUSE Cedex 1, FranceAPPLICATION NOTE33 (0) ..
NCP1200D40R2 ,PWM Current-Mode Controller for Low-Power Universal Off-Line SuppliesAND8076/DA 70 W Low Standby Power Supply with the NCP120x SeriesPrepared by: Christophe Basso
NCP1200D40R2G ,PWM Current-Mode Controller for Low-Power Universal Off-Line SuppliesMaximum ratings applied to the device are individual stress limitvalues (not normal operating condi ..
NCP1200D60R2 ,PWM Current-Mode Controller for Low-Power Universal Off-Line Suppliesfeatures demonstrate:Ready–to–use templates can be downloaded in OrCAD’s No need of auxiliary wind ..
NCP1200D60R2G ,PWM Current-Mode Controller for Low-Power Universal Off-Line Suppliesfeatures a pulse skipping enough for this function because diode D6 just has tolow power consumptio ..
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NCP1200D100R2G-NCP1200D40R2G-NCP1200P100G-NCP1200P40G-NCP1200P60G
PWM Current-Mode Controller for Low-Power Universal Off-Line Supplies
NCP1200
PWM Current-Mode
Controller for Low-Power
Universal Off-Line Supplies
Housed in SOIC−8 or PDIP−8 package, the NCP1200 represents a
major leap toward ultra−compact Switchmode Power Supplies. Due to
a novel concept, the circuit allows the implementation of a complete
offline battery charger or a standby SMPS with few external
components. Furthermore, an integrated output short−circuit
protection lets the designer build an extremely low−cost AC−DC wall
adapter associated with a simplified feedback scheme.
With an internal structure operating at a fixed 40 kHz, 60 kHz or
100 kHz, the controller drives low gate−charge switching devices like
an IGBT or a MOSFET thus requiring a very small operating power.
Due to current−mode control, the NCP1200 drastically simplifies the
design of reliable and cheap offline converters with extremely low
acoustic generation and inherent pulse−by−pulse control.
When the current setpoint falls below a given value, e.g. the output
power demand diminishes, the IC automatically enters the skip cycle
mode and provides excellent efficiency at light loads. Because this
occurs at low peak current, no acoustic noise takes place.
Finally, the IC is self−supplied from the DC rail, eliminating the
need of an auxiliary winding. This feature ensures operation in
presence of low output voltage or shorts.
Features
No Auxiliary Winding Operation Internal Output Short−Circuit Protection Extremely Low No−Load Standby Power Current−Mode with Skip−Cycle Capability Internal Leading Edge Blanking 250 mA Peak Current Source/Sink Capability Internally Fixed Frequency at 40 kHz, 60 kHz and 100 kHz Direct Optocoupler Connection Built−in Frequency Jittering for Lower EMI SPICE Models Available for TRANsient and AC Analysis Internal Temperature Shutdown Pb−Free Packages are Available
Typical Applications
AC−DC Adapters Offline Battery Chargers Auxiliary/Ancillary Power Supplies (USB, Appliances, TVs, etc.)
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