ML4800CSX ,Power Factor Correction (PFC) and PWM Controller ComboGeneral Description• Internally synchronized leading-edge PFC and trailing- The ML4800 is a control ..
ML4800IP ,Power Factor Correction (PFC) and PWM Controller Combo ML4800Power Factor Correction and PWM Controller Combo
ML4800IS ,Power Factor Correction (PFC) and PWM Controller Combo ML4800Power Factor Correction and PWM Controller Combo
ML4800IS ,Power Factor Correction (PFC) and PWM Controller ComboBlock Diagram1316 1VEAO IEAO POWER FACTOR CORRECTOR VCCVCCTRI-FAULT OVPV17VV VEA REF0.5V +FB+ 7.5V1 ..
ML4800ISX ,Power Factor Correction (PFC) and PWM Controller ComboBlock Diagram1316 1VEAO IEAO POWER FACTOR CORRECTOR VCCVCCTRI-FAULT OVPV17VV VEA REF0.5V +FB+ 7.5V1 ..
ML4801CP ,Variable Feedforward PFC/PWM Controller ComboBLOCK DIAGRAM16 1 13IEAO POWER FACTOR CORRECTOR VVEAOCCVCCOVPVV VEA REFFB+ 7.5VIEA141.6kΩ15 -REFERE ..
MMBD914 ,Switching DiodesFeatures.122 (3.1)• Silicon Epitaxial Planar Diode.110 (2.8)• Fast switching diode in case SOT-23, ..
MMBD914L ,High-Speed Switching DiodeMaximum ratings are those values beyond which device damage can occur.
MMBD914LT1 ,High-Speed Switching DiodeTHERMAL CHARACTERISTICS3Characteristic Symbol Max Unit1Total Device Dissipation P 225 mWDFR−5 Board ..
MMBD914LT3 ,High-Speed Switching DiodeMaximum ratings applied to the device are individual stress limit values (notnormal operating condi ..
MMBD914-V-GS08 , Small Signal Switching Diode
MMBF0201NLT1 ,Power MOSFET 300 mAmps, 20 VoltsELECTRICAL CHARACTERISTICS (T = 25°C unless otherwise noted)ACharacteristic Symbol Min Typ Max Unit ..
ML4800CP-ML4800CS-ML4800CSX-ML4800IP-ML4800IS-ML4800ISX
Power Factor Correction (PFC) and PWM Controller Combo
Features Internally synchronized leading-edge PFC and trailing-
edge PWM in one IC TriFault Detect™ for UL1950 compliance and enhanced
safety Slew rate enhanced transconductance error amplifier for
ultra-fast PFC response Low power: 200µA startup current, 5.5mA operating
current Low total harmonic distortion, high PF Reduced ripple current in storage capacitor between PFC
and PWM sections Average current, continuous boost leading edge PFC PWM configurable for current-mode or voltage mode
operation Current fed gain modulator for improved noise immunity Overvoltage and brown-out protection, UVLO, and soft
start
General DescriptionThe ML4800 is a controller for power factor corrected,
switched mode power supplies. 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 complies with
IEC1000-3-2 specification. Intended as a BiCMOS version
of the industry-standard ML4824, the ML4800 includes
circuits for the implementation of leading edge, average
current, “boost” type power factor correction and a trailing
edge, pulse width modulator (PWM). It also includes a
TriFault Detect™ function to help ensure that no unsafe
conditions will result from single component failure in the
PFC. Gate-drivers with 1A capabilities minimize the need
for external driver circuits. Low power requirements improve
efficiency and reduce component costs.
An over-voltage comparator 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 250kHz, and includes an accurate
50% duty cycle limit to prevent transformer saturation.
