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CM6802IS

NO BLEED RESISTOR GREEN MODE PFC/PWM CONTROLLER COMBO

GENERALDESCRIPTION TheCM6802isagreenPFC/PWM.ItisthenewgenerationofML4802,ML4841,ML4801andML4824-2.ItssystemclockfrequencyisgeneratedbytheexternalRTandCT,andthenitsPWMfrequencyis50oftheclockanditsPFCfrequencyis25oftheclock.CM6802isdesignedto

CM6802IS

NO BLEED RESISTOR GREEN MODE PFC/PWM CONTROLLER COMBO; Patent Number #5,565,761, #5,747,977, #5,742,151, #5,804,950, #5,798,635\nfosc=2 x fpwm =4 x fpfc\nNo bleed resistor required\nBefore the chip wakes up, IAC can start up VCC\nPin to pin Compatible with CM6800, ML4824 and ML4800 (It needs to modify the values of the external component to work properly).\nUser Program PFC automatic green mode threshold(patented)\nUser Program PWM automatic green mode threshold(patented)\nInput power less than 0.75Watt without shutting off PFC at no load condition.\nAdditional folded-back current limit for PWM section.\n23V Bi-CMOS process\nPWM pulse keeping for the green mode\nVIN OK guaranteed turn on PWM at 2.5V instead of 1.5V?\nInternally synchronized leading edge PFC and trailing edge PWM in one IC\nSlew rate enhanced transconductance error amplifier for ultra-fast PFC response\nLow start-up current (30μA typ.)\nLow operating current (3.0mA type.)\nLow total harmonic distortion, high PF\nReduces ripple current in the storage capacitor between the PFC and PWM sections\nAverage current, continuous or discontinuous boost leading edge PFC\nVCC OVP Comparator will turn off both PFC and PWM\nLow Power Detect Comparator\nTri-Fault detect to meet UL1950\nPWM configurable for current mode or voltage mode operation\nCurrent fed gain modulator for improved noise immunity\nBrown-out control, over-voltage protection, UVLO, and soft start, and Reference OK;

GENERAL DESCRIPTION\nThe CM6802 is a green PFC/PWM. It is the new generation of ML4802, ML4841, ML4801 and ML4824-2. Its system clock frequency is generated by the external RT and CT, and then its PWM frequency is 50% of the clock and its PFC frequency is 25% of the clock. CM6802 is designed to\nbe pin-pin compatible with CM6800 family, ML4800 family and ML4824 family. Its PWM (DC to DC section) can be easily configured to Voltage Mode or Current Mode.?? The green mode function can easily be designed so during the no load condition, its input power can be less than 0.75Watt\nwithout shutting off PFC. Its PFC green mode threshold and the PWM green mode threshold can separately set by selecting the proper the RC filter at ISENSE pin (pin3) and CT on RAMP 1 pin (pin 7). Power Factor Correction (PFC) allows the use of smaller, lower cost bulk capacitors,\nreduces power line loading and stress on the switching FETs, and results in a power supply that fully compiles with IEC-1000-3-2 specifications. Intended as a BiCMOS version of the industry-standard CM6800, CM6802 includes circuits for the implementation of leading edge, average\ncurrent, “boost” type power factor correction and a trailing edge, pulse width modulator (PWM). Both PFC and PWM Gate-driver with 0.5A capabilities minimizes the need for external driver circuits. Low power requirements improve efficiency and reduce component costs.FEATURES\nPatent Number #5,565,761, #5,747,977, #5,742,151, #5,804,950, #5,798,635\nfosc=2 x fpwm =4 x fpfc\nNo bleed resistor required\nBefore the chip wakes up, IAC can start up VCC\nPin to pin Compatible with CM6800, ML4824 and ML4800 (It needs to modify the values of the external component to work properly).\nUser Program PFC automatic green mode threshold(patented)\nUser Program PWM automatic green mode threshold(patented)\nInput power less than 0.75Watt without shutting off PFC at no load condition.\nAdditional folded-back current limit for PWM section.\n23V Bi-CMOS process\nPWM pulse keeping for the green mode\nVIN OK guaranteed turn on PWM at 2.5V instead of 1.5V?\nInternally synchronized leading edge PFC and trailing edge PWM in one IC\nSlew rate enhanced transconductance error amplifier for ultra-fast PFC response\nLow start-up current (30μA typ.)\nLow operating current (3.0mA type.)\nLow total harmonic distortion, high PF\nReduces ripple current in the storage capacitor between the PFC and PWM sections\nAverage current, continuous or discontinuous boost leading edge PFC\nVCC OVP Comparator will turn off both PFC and PWM\nLow Power Detect Comparator\nTri-Fault detect to meet UL1950\nPWM configurable for current mode or voltage mode operation\nCurrent fed gain modulator for improved noise immunity\nBrown-out control, over-voltage protection, UVLO, and soft start, and Reference OKAPPLICATIONS\nDesktop PC Power Supply\nInternet Server Power Supply\nIPC Power Supply\nUPS\nBattery Charger\nDC Motor Power Supply\nMonitor Power Supply\nTelecom System Power Supply\nDistributed Power

CM6802SAH

EPA/85ZVS-LikePFCPWMCOMBOCONTROLLER

CM6802SAHGIP

EPA/85ZVS-LikePFCPWMCOMBOCONTROLLER

CM6802SAHGIS

EPA/85ZVS-LikePFCPWMCOMBOCONTROLLER