CM6900IS Champion Microelectronic Corp., CM6900IS Datasheet

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PFC/PWM C GENERAL DESCRIPTION The CM6900 is a controller for power factor corrected, 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, ...

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PFC/PWM C APPLICATIONS Desktop PC Power Supply ! ! Internet Server Power Supply ! IPC Power Supply ! UPS ! Battery Charger ! DC Motor Power Supply Monitor Power Supply ! ! Telecom System Power Supply ! Distributed Power PIN ...

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PFC/PWM Digital Power DDD 16 V Analog Power CCA 17 V Buffered output for the internal 7.5V reference REF 18 V PFC transconductance voltage error amplifier input FB2 19 V PFC transconductance voltage error amplifier input FB ...

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... PFC/PWM C ORDERING INFORMATION Part Number CM6900IP CM6900IS ABSOLUTE MAXIMUM RATINGS Absolute Maximum ratings are those values beyond which the device could be permanently damaged. Parameter V and P CCA VDD IEAO I Voltage SENSE PFC OUT PWMOUT INRUSHSTOPB Voltage on Any Other Pin I REF I Input Current ...

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PFC/PWM C ELECTRICAL CHARACTERISTICS VCCA=+15V 52.3kΩ 470pF Symbol Parameter Input Voltage Range Transconductance Input Offset Voltage Input Bias Current Output High Voltage Output Low Voltage Sink Current Source Current Open Loop Gain Power ...

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PFC/PWM C ELECTRICAL CHARACTERISTICS VCCA=+15V 52.3kΩ 470pF Symbol Parameter Total Variation Ramp Valley to Peak Voltage PFC Dead Time (Note 4) CT Discharge Current Output Voltage Line Regulation Load Regulation Temperature Stability Total ...

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PFC/PWM C TYPICAL PERFORMANCE CHARACTERISTIC 127 120 113 106 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 VFB (V) Voltage Error Amplifier (g mv 0.4 0.35 0.3 0.25 0.2 0.15 0.1 ...

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PFC/PWM C Functional Description The CM6900 consists of an average current controlled, continuous boost Power Factor Correction (PFC) front end and a synchronized Pulse Width Modulator (PWM) back end. The PWM can be used in either current or voltage mode. ...

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PFC/PWM C The output of the gain modulator is a current signal, in the form of a full wave rectified sinusoid at twice the line frequency. This current is applied to the virtual-ground (negative) input of the current error amplifier. ...

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PFC/PWM C Error Amplifier Compensation The PWM loading of the PFC can be modeled as a negative resistor; an increase in input voltage to the PWM causes a decrease in the input current. This response dictates the proper compensation of ...

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PFC/PWM Compensation Net Work for the Current Loop Transconductance of IEAO PFC Boost Output Voltage; typical designed value OUTDC is 380V and we use the worst condition to calculate the Z ...

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PFC/PWM C Oscillator (RAMP1) The oscillator frequency is determined by the values of R and C , which determine the ramp and off-time of the T oscillator output clock OSC t t RAMP DEADTIME The dead time ...

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PFC/PWM C where C is the required soft start capacitance, and the the desired start-up delay. DEALY It is important that the time constant of the PWM soft-start allow the PFC time to generate sufficient output power ...

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PFC/PWM C Leading/Trailing Modulation Conventional Pulse Width Modulation (PWM) techniques employ trailing edge modulation in which the switch will turn on right after the trailing edge of the system clock. The error amplifier output is then compared with the modulating ...

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PFC/PWM C APPLICATION CIRCUIT (CURRENT MODE) +12V L2 +382V R30 R17 T1B C25 R31A R31B R7A R7B R21 R27 R1A R1B R2A R2B C1 VIN AC Preliminary 2003/04/23 Rev. 1.2 ...

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PFC/PWM C APPLICATION CIRCUIT (VOLTAGE MODE) EMC FILTER R5 R3 IVIN IVIN_EMC L2 L3 RT1 IVIN VIN R18 D6 1N4002 PFC_Vout PWM_IN C7 R27 C22 10n 10n 100k D8 D13 MUR1100 MUR1100 C15 10n VCC ...

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PFC/PWM C PACKAGE DIMENSION PIN 1 ID PIN 1 ID Preliminary 2003/04/23 Rev. 1 OMBO NRUSH URRENT 20-PIN PDIP (P20) 20-PIN SOP (P20), 0.300” Wide Champion Microelectronic Corporation CM6900 C & S PFCOVP ONTROL EPARATED Page 17 ...

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DIODES LAB HANGZHOU,CHINA CERAMIC/PZT SHINCHU,TAIWAN CERAMIC/SURGE ABSORBER SHANGHAI,CHINA DC POWER LAB TAIPEI,TAIWAN ...