On Bright Confidential to
OB6563
High Performance PFC Controller
Product Specification
GENERAL DESCRIPTION
OB6563 is ...
On Bright Confidential to
OB6563
High Performance PFC Controller
Product Specification
GENERAL DESCRIPTION
OB6563 is an active transition-mode (TM) power factor correction (PFC) controller for AC-DC switching mode power supply applications. OB6563 features an internal start-up timer for stand-alone 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 builtin leading-edge blanking, and a totem pole output ideally suited for driving a power
MOSFET. OB6563 offers great protection coverage including system over-
voltage protection (OVP) to eliminate runaway output
voltage due to load removal, VCC under
voltage lockout (UVLO), cycle-by-cycle current limiting, 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, OB6563 shuts down system...