CM6800IP Champion Microelectronic Corp., CM6800IP Datasheet
CM6800IP
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CM6800IP Summary of contents
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GENERAL DESCRIPTION The CM6800 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, and results ...
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PIN DESCRIPTION Pin No. Symbol 1 IEAO PFC transconductance current error amplifier output 2 I PFC gain control reference input Current sense input to the PFC current limit comparator SENSE 4 V Input for PFC RMS line ...
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BLOCK DIAGRAM (CM6800) 16 VEAO - 0.5V + LOW POWER DETECT VFB GMv 15 - 3.5K . 2.5V + IAC 2 GAIN VRMS MODULATOR 4 ISENSE 3 RAMP1 7 350 RAMP2 8 SW SPST PWM CMP - 1.5V + VDC ...
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... ISENSE 3 RAMP1 7 350 RAMP2 8 SW SPST PWM CMP - 1.5V + VDC 6 Vcc 20uA 350 SPST SW SPST VREF DC ILIMIT 9 ORDERING INFORMATION Part Number CM6800IP CM6800IS CM6801IP CM6801IS Preliminary 2003/04/10 Rev. 1 TART- P URRENT 1 IEAO VCC OVP VCC + 19.4V - 2.75V GMi PFC CMP + . + ...
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ABSOLUTE MAXIMUM RATINGS Absolute Maximum ratings are those values beyond which the device could be permanently damaged. Parameter V CC IEAO I Voltage SENSE PFC OUT PWMOUT Voltage on Any Other Pin I REF I Input Current AC Peak PFC ...
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ELECTRICAL CHARACTERISTICS Vcc=+15V 52.3kΩ 470pF Symbol Parameter Sink Current Source Current Open Loop Gain Power Supply Rejection Ratio Threshold Voltage Hysteresis Threshold Voltage Threshold Voltage Hysteresis Threshold Voltage (PFC I V – Gain ...
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ELECTRICAL CHARACTERISTICS Vcc=+15V 52.3kΩ 470pF Symbol Parameter Output Voltage Line Regulation Load Regulation Temperature Stability Total Variation Long Term Stability Minimum Duty Cycle Maximum Duty Cycle Output Low Rdson Output High Rdson Rise/Fall ...
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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 0.05 0 ...
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Functional Description The CM6800/1 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. In voltage ...
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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. In this ...
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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 the two ...
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Z : 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 ...
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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 of the ...
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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 for the ...
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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 ramp up. ...
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APPLICATION CIRCUIT (Current Mode) +12V L2 +382V R30 R17 T1B C25 R7A R7B R21 Q6 R27 D15 R1A R1B R2A C1 VIN AC Preliminary 2003/04/10 Rev. 1 ...
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APPLICATION CIRCUIT (Voltage Mode) EMC FILTER R5 R3 IVIN_EMC IVIN L2 L3 RT1 VIN PWM_IN PFC_Vout C7 R27 C22 10n 10n 100k D13 MUR1100 C15 10n VCC C34 100n Q6 Q2N2222 R28 PWM_DC PFC_OUT Q7 ...
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PACKAGE DIMENSION PIN 1 ID PIN 1 ID Preliminary 2003/04/10 Rev. 1 TART- P URRENT 16-PIN PDIP (P16) 16-PIN SOP (S16), 0.300” Wide Body Champion Microelectronic Corporation CM6800/1 PFC/PWM C ONTROLLER Page 18 C OMBO ...
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Champion Microelectronic Corporation (CMC) reserves the right to make changes to its products or to discontinue any integrated circuit product or service without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing ...