CM6800A
CM6800A is LOW START-UP CURRENT PFC/PWM CONTROLLER COMBO manufactured by Champion Microelectronic.
LOW START-UP CURRENT PFC/PWM CONTROLLER BO GENERAL DESCRIPTION switched mode power suppliers. Power Factor Correction (PFC) allows the use of smaller, lower cost bulk capacitors, reduces power line loading and stress on the switching FETs, and results in a power supply that fully piles with IEC-1000-3-2 specifications. Intended as a Bi CMOS version of the industry-standard ML4824, CM6800A includes circuits for the implementation of leading edge,
.. average current, “boost” type power factor correction and a
Features
Patent Number #5,565,761, #5,747,977, #5,742,151, #5,804,950, #5,798,635 Pin to pin patible with ML4800 and FAN6800 Additional folded-back current limit for PWM section. 23V Bi-CMOS process VIN OK turn on PWM at 2.25V instead of 1.5V(ML4800). Internally synchronized leading edge PFC and trailing edge PWM in one IC Slew rate enhanced transconductance error amplifier for ultra-fast PFC response Low start-up current (100 μ A typ.) Low operating current (3.0m A type.) Low total harmonic distortion, high PF Reduces ripple current in the storage capacitor between the PFC and PWM sections Average current, continuous or discontinuous boost leading edge PFC VCC OVP parator, Low Power Detect parator PWM configurable for current mode or voltage mode operation Current fed gain modulator for improved noise immunity Brown-out control, over-voltage protection, UVLO, and soft start, and Reference OK
The CM6800A is a controller for power factor corrected, trailing edge, pulse width modulator (PWM). Gate-driver with 1A capabilities minimizes the need for external driver circuits. Low power requirements improve efficiency and reduce ponent costs. An over-voltage parator shuts down the PFC section in the event of a sudden decrease in load. The PFC section also includes peak current limiting and input voltage brownout protection. The PWM section can be operated in current or voltage mode, at up to 250k...
