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FAN6982 — CCM Power Factor Correction Controller
July 2010
FAN6982
CCM Power Factor Correction Controller
Features
Continuous Conduction Mode
Innovative Switching-Charge Multiplier-Divider
Average-Current-Mode for Input-Current Shaping
TriFault Detect™ Prevent Abnormal Operation for
Feedback Loop
Power-On Sequence Control
Soft-Start Capability
Brownout Protection
Cycle-by-Cycle Peak Current Limiting.
Improves Light-Load Efficiency
Fulfills Class-D Requirements of IEC 1000-3-2
Wide Range Universal AC Input Voltage
Maximum Duty Cycle 97%
V
DD
Under-Voltage Lockout (UVLO)
Description
The FAN6982 is a 14-pin, Continuous Conduction Mode
(CCM) PFC controller IC intended for Power Factor
Correction (PFC) pre-regulators. The FAN6982 includes
circuits for the implementation of leading edge, average
current, “boost”-type power factor correction, and
results in a power supply that fully complies with the
IEC1000-3-2 specification.
A TriFault Detect™ function helps reduce external
components and provides full protection for feedback
loops such as open, short, and over voltage. An over-
voltage comparator shuts down the PFC stage in the
event of a sudden load decrease. The RDY signal can
be used for power-on sequence control. The EN
function can choose to enable or disable the range
function. FAN6982 also includes PFC soft-start, peak
current limiting, and input voltage brownout protection.
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Embedded System
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