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发布者:来自网络 发布时间:2019/4/9 阅读:944次    关键字: AC-DC
SP6562A- Power Factor Controller IC


SP6562A- Power Factor Controller IC DataSheet 

DESCRIPTION
SP6562A is an active transition-mode (TM) power factor correction (PFC) controller for AC-DC switching mode power supply applications.
SP6562A features an internal start-up timer for standalone applications, a one quadrant multiplier with THD optimizer for near unity power factor, zero current detector (ZCD) to ensure TM operation, a current sensing comparator with built-in leading-edge blanking, and a totem pole output ideally suited for driving a power MOSFET.
SP6562A offers great protection coverage including
system over-voltage protection (OVP) to eliminate
runaway output voltage due to load removal, VCC under voltage lockout (UVLO), multiplier output clamping that limit maximum peak switch current, and gate drive output clamping for external power MOSFET protection. with added system open loop protection feature, shuts down system when the feedback loop is open.

FEATURES
 Transition Mode (TM) Operation
 Low Total Harmonic Distortion(THD)
 Precise Adjustable Output Over-Voltage Protection
 Open-Feedback Protection and Disable Function
 Zero Current Detector
 Internal Start up timer
 Under-Voltage Lockout with 2.5V Hysteresis
 Low Start-up (30µA)
 Low (2.2mA) quiescent current
 1.4% internal reference voltage
 -600/+800mA totem pole gate driver with active
pull-down during UVLO and voltage clamp
 SOP-8 Package

APPLICATIONS
 AC/DC Switching Power Adaptor
 PC Power Supply
 LCD TV Power Supply
 Electronic Ballast

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