Compact, Fixed−Frequency, Continuous Conduction Mode PFC Controller
The NCP1653 is a controller designed for Continuous Conduction
Mode (CCM) Power Factor Correction (PFC) boost circuits. It
operates in the follower boost or constant output voltage in 67 or 100
kHz fixed switching frequency. Follower boost offers the benefits of
reduction of output voltage and hence reduction in the size and cost
of the inductor and power switch. Housed in a DIP−8 or SO−8
package, the circuit minimizes the number of external components
and drastically simplifies the CCM PFC implementation. It also
integrates high safety protection features. The NCP1653 is a driver
for robust and compact PFC stages.
Features
IEC1000−3−2 Compliant
Continuous Conduction Mode
Average Current−Mode or Peak Current−Mode Operation
Constant Output Voltage or Follower Boost Operation
Very Few External Components
Fixed Switching Frequency: 67 kHz = NCP1653A,
Fixed Switching Frequency: 100 kHz = NCP1653
Soft−Start Capability
VCC Undervoltage Lockout with Hysteresis (8.7 / 13.25 V)
Overvoltage Protection (107% of Nominal Output Level)
Undervoltage Protection or Shutdown (8% of Nominal Output Level)
Programmable Overcurrent Protection
Programmable Overpower Limitation
Thermal Shutdown with Hysteresis (120 / 150_C)
Pb−Free Packages are Available
Typical Applications
TV & Monitors
PC Desktop SMPS
AC Adapters SMPS
White Goods
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