CM6805 Champion Microelectronic Corp., CM6805 Datasheet
CM6805
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CM6805 Summary of contents
Page 1
... CM6806A includes circuits for the implementation of a leading edge, input current shaping technique “boost” type PFC and a trailing edge, PWM. The CM6805A’s PFC and PWM operate at the same frequency, 67.5kHz. A PFC OVP comparator shuts down the PFC section in the event of a sudden decrease in load. ...
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... Positive supply 9 PFC OUT PFC driver output 10 PWM OUT PWM driver output ORDERING INFORMATION Part Number Operation Frequency CM6805AIR/AGIR* Fpwm = Fpfc = 67.5Khz CM6805BIR/BGIR* Fpwm = Fpfc = 95Khz CM6806AIR/AGIR* Fpwm = 2Fpfc = 110Khz Note: 1.G : Suffix for Pb Free Product 2.Initial Accuracy : T =25℃ A 2006/10/11 Rev1.0 CM6805(A ...
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... PFC CMP - . + V To Ramp . . PFCCLK PWMCLK VIN-OK VFB + 2.45V - - 0.75V PWMFAULT 10mS GND 1.5V PWMCLK . . SS SOFT START 6 V+I Champion Microelectronic Corporation CM6805(A;B)/CM6806A UVB VREFDK FAULT UVLO VCC . . PFC CLK . . PWM CLK fpfc=70KHz UVB R2 Q VREFDK PWM CMP - - . ...
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... Input Impedance Threshold Voltage Hysteresis Threshold Voltage Hysteresis Threshold Voltage Delay to Output Threshold Voltage Hysteresis Threshold Voltage (CM6805B/C) Hysteresis (CM6805B/C) Digital Soft Start Timer (Note 2) Threshold Voltage Delay to Output (Note 2) Threshold Voltage Fault Detect HIGH Time to Fault Detect HIGH Fault Detect LOW 2006/10/11 Rev1 ...
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... Temperature Range (Note 1) A Test Conditions PWM Tri-Fault Detect Comparator Sweep PWMtrifault Sweep PWMtrifault PFC Frequency 10V < V < 15V CC Line, Temp (CM6805A) Line, Temp (CM6805B) Line, Temp (CM6806A) PFC I =100uA,V =2.55V =0uA,V =2 ...
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... TYPICAL PERFORMANCE CHARACTERISTIC 127 120 113 106 2006/10/11 Rev1.0 10-PIN Green-Mode PFC/PWM Combo CONTROLLER for High Density AC Adapter 2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 VFB (V) Voltage Error Amplifier (g ) Transconductance mv Champion Microelectronic Corporation CM6805(A;B)/CM6806A 3 Page 6 ...
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... Factor Correction) synchronized PWM (Pulse Width Modulator) back end. The CM6805A /CM6806A is designed to replace FAN6803 (8 pin SOP package), which is the second generation of the ML4803 with 8 pin package distinguished from earlier combo controllers by its low count, innovative input current shaping technique, and very low start-up and operating currents ...
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... AC line in phase with and proportional to the input voltage, a way must be found to prevent that device from loading the line except in proportion to the instantaneous line voltage. The PFC section of the CM6805A/CM6806A uses a boost-mode DC-DC converter to accomplish this. The input to the converter is the full wave rectified AC line voltage. No ...
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... Therefore, current is in phase with voltage. In the conventional control, it forces the input current to follow the input voltage. In CM6805A/CM6806A, the chip thinks if a boost converter needs to behave like a low frequency resistor, what the duty cycle should be. ...
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... PFC Section: PFC Voltage Loop Error Amp, VEAO The ML4803 utilizes an one pin voltage error amplifier in the PFC section (VEAO). In the CM6805A/CM6806A using the slew rate enhanced transconductance amplifier, which is the same as error amplifier in the CM6800. The unique transconductance profile can speed up the conventional transient response by 10 times ...
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... PFC Tri-Fault detect is an entirely internal circuit. It requires no external components to serve its protective function. VCC OVP and generate VCC For the CM6805A/CM6806A system, if VCC is generated from a source that is proportional to the PFC output voltage and once that source reaches 17.9V, PFCOUT, PFC driver will be off ...
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... The following figure shows the typical circuit for PWMtrifault and pins. Turn off PFC(PWMtrifault) When CM6805A/CM6806A will turn off PFC. Usually; it means load has been reduced to a level, which is the level of the Green Mode threshold. Usually, we set the Green Mode threshold around 20% of the full load. ...
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... Rev1.0 CM6805(A;B)/CM6806A 10-PIN Green-Mode PFC/PWM Combo CONTROLLER for High Density AC Adapter Champion Microelectronic Corporation Page 13 ...
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... R53 150K R16 D6 Q7 1N4148 R14 2 1 2SK2842 4401 1M R13 1N4148 75K 220PF R18 U1 CM6805 R17 GND PWM OUT HSA1 2 9 IAC PFC OUT R22 2 470 Isense VCC 4 7 VEAO PwmTrif ault C13 ...
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... PACKAGE DIMENSION PIN NUMBERING SCHEME Ordering Number: CM6805AXY/CM6806AXY (note1) Ordering Number: CM6805AGXY/CM6806AGXY (note2) note1 Suffix for Temperature Range (note Suffix for Package Type (note 4) note2 Suffix for Pb Free Product X : Suffix for Temperature Range (note Suffix for Package Type (note 4) ...
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... Science-Based Industrial Park, HsinChu City, Taiwan +886-3-567 9979 +886-3-567 9909 http://www.champion-micro.com 2006/10/11 Rev1.0 CM6805(A;B)/CM6806A 10-PIN Green-Mode PFC/PWM Combo CONTROLLER for High Density AC Adapter IMPORTANT NOTICE Sales & Marketing 7F-6, No.32, Sec. 1, Chenggong Rd., Nangang District, Taipei City 115, Taiwan R.O.C. ...