CM6800T Champion Microelectronic Corp., CM6800T Datasheet
CM6800T
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CM6800T Summary of contents
Page 1
... GENERAL DESCRIPTION CM6800T is a turbo-speed PFC and a Green PWM controller designed to further increase power supply efficiency while using the relatively lower 380V Bulk Capacitor value. Switching to CM6800T from your existing CM6800 family boards can gain the following advanced performances: 1 ...
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... Soft start capacitor pin pulled down by 70K ohm 5 SS internal resistor when DCILIMIT reach 1V; the power is limited during the PWM Brown out. 2010/08/03 Rev. 1.2 CM6800T EPA/85+ PFC+PWM COMBO CONTROLLER Design for High Efficient Power Supply PIN CONFIGURATION ...
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... GND Ground 11 PWM OUT PWM driver output 12 PFC OUT PFC driver output 13 V Positive supply for CM6800T CC Maximum 3.5mA buffered output for the internal 7.5V 14 VREF reference when VCC=14V 15 V PFC transconductance voltage error amplifier input FB PFC transconductance voltage error amplifier output ...
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... Simplified Block Diagram (CM6800T) 16 VEAO GMv + . Rmul 2.5V - VFB 15 GAIN MODULATOR IAC 2 VRMS 4 ISENSE 3 PFC RAMP1 PFCCLK 7 2K RAMP2 PWMCLK 8 SW SPST 1.8V + VDC VCC 10uA 70K ILIMIT 9 GND 10 ABSOLUTE MAXIMUM RATINGS Absolute Maximum ratings are those values beyond which the device could be permanently damaged. ...
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... Room Temperature=25℃ VEAO = 3.35V @ T=25℃ NONINV INV Note 2 Overdrive Voltage = 100mV @ T=25℃ Overdrive Voltage = 100mV @ T=25℃ Guaranteed by design 11V < V < 16.5V CC Champion Microelectronic Corporation (Turbo-Speed PFC+Green PWM) = 1000pF, T =Operating Temperature T A CM6800T Min. Typ. Max. 1.70 1.78 1.86 0.98 1.03 1.08 710 760 2.45 2.52 2 ...
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... IEAO = 4.0V @ T=25℃ SENSE DC Gain 11V < V < 16. FAULT DETECT LOW V =OPEN, 470pF from V to GND FB FB Overdrive Voltage = -100mV Champion Microelectronic Corporation (Turbo-Speed PFC+Green PWM) = 5.88 kΩ 1000pF CM6800T Min. Typ. Max. -1.2 0 -10 50 6.8 7.4 7.7 0.1 0.4 -40 -34 - ...
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... V AC RMS FB SS<VREF R = 5.88 kΩ 1000pF 25℃ IAC=0uA 11V < V < 16.5V CC Line, Temp VEAO=6V and IAC=20uA 2.5V RAMP2 RAMP1 Champion Microelectronic Corporation (Turbo-Speed PFC+Green PWM) = 5.88 kΩ 1000pF CM6800T Min. Typ. Max. 0.92 1.0 1.08 700 2.1 2.3 2.5 880 950 1000 4.4 5.5 6 1.2 1.5 1.8 = 2.375V 0.9 1.05 1 ...
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... T=25℃ 14V CM6800T CM6800T CM6800T Apply VCC with Iop=20mA pin – (VEAO – 0.7)] ; VEAO OFFSET AC Champion Microelectronic Corporation (Turbo-Speed PFC+Green PWM) Design for High Efficient Power Supply CM6800T Min. Typ. 7.3 7 0 0-49.5 13 0.5 26.5 50 1.6 1 ...
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... Input Line Voltage (110 Vac) was turned off for 40mS before reaching PWM Brownout which is 209Vdc. When the bulk cap voltage goes below 209V, the system will reset the PWM soft start. The result of the CM6800T Input Line Current has a clean Off and softly On even the system does not reset PWM soft-start ...
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... Ch1 is 380V bulk cap voltage which is 100V/div. Ch2 is VCC,Ch3 is SS(soft start pin),CH4 is Vo(12V) 2010/08/03 Rev. 1.2 CM6800T EPA/85+ PFC+PWM COMBO CONTROLLER Design for High Efficient Power Supply Ch1 is 380V bulk cap voltage which is 100V/div. Ch2 is VCC,Ch3 is SS(soft start pin),CH4 is Vo(12V). ...
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... Ch2 is AC input voltage which is 100V/div. Ch3 is PFC stage Mosfet drain current, CH4 is Vo (12V) 2010/08/03 Rev. 1.2 CM6800T EPA/85+ PFC+PWM COMBO CONTROLLER Design for High Efficient Power Supply Ch3 is PFC stage Mosfet Drain current(zoom In) Ch3 is PFC stage Mosfet Drain current(zoom In) ...
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... Ch2 is AC input voltage which is 100V/div. Ch3 is PFC stage Mosfet drain current, CH4 is Vo (12V) 2010/08/03 Rev. 1.2 CM6800T EPA/85+ PFC+PWM COMBO CONTROLLER Design for High Efficient Power Supply Ch3 is PFC stage Mosfet Drain current (zoom In) Ch3 is PFC stage Mosfet Drain current (zoom In) ...
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... Ch2 is AC input voltage which is 100V/div. Ch3 is PFC stage Mosfet drain current, CH4 is Vo (12V) 2010/08/03 Rev. 1.2 CM6800T EPA/85+ PFC+PWM COMBO CONTROLLER Design for High Efficient Power Supply Ch3 is PFC stage Mosfet Drain current Ch3 is PFC stage Mosfet Drain current (zoom In) ...
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... CM6800’s 20uA to CM6800T’s 10uA.Soft Start capacitor can be reduced to 1/2 from your original CM6800 capacitor. Functional Description CM6800T is designed for high efficient power supply for both full load and light load popular EPA/85+ PFC-PWM power supply controller. The CM6800T consists of an average current controlled ...
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... PFC Section: Gain Modulator Figure 1 shows a block diagram of the PFC section of the CM6800T. The gain modulator is the heart of the PFC this circuit block which controls the response of the current loop to line voltage waveform and frequency, rms line voltage, and PFC output voltages. There are three inputs to the gain modulator ...
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... Assume R 0.03Ohm, R SENSE PFC OVP In the CM6800T, PFC OVP comparator serves to protect the power circuit from being subjected to excessive voltages if the load should suddenly change. A resistor divider from the high voltage DC output of the PFC is fed to VFB. When the voltage on VFB exceeds ~ 2 ...
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... Rev. 1.2 CM6800T EPA/85+ PFC+PWM COMBO CONTROLLER The gain vs. input voltage of the CM6800T’s voltage error amplifier, V under steady-state operating conditions the transconductance of the error amplifier, GMv local minimum. Rapid perturbation in line or load conditions will cause the input to the ...
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... VEAO GMv + . Rmul 2.5V - VFB 15 GAIN MODULATOR IAC 2 VRMS 4 ISENSE 3 PFC RAMP1 PFCCLK 7 2010/08/03 Rev. 1.2 CM6800T EPA/85+ PFC+PWM COMBO CONTROLLER 1 IEAO VFB + 2.75V - GMi PFC CMP + . + PFC Tri-Fault - - 0.5V + VFB - Rmul PFC ILIMIT -1.0V + PFC RAMP - ISENSE Green PFC 0. VEAO . Figure 1. PFC Section Block Diagram ...
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... DC I stage over-current protection. No voltage error amplifier is included in the PWM stage of the CM6800T, as this function is generally performed on the output side of the PWM’s isolation boundary. To facilitate the design of opto-coupler feedback circuitry, an offset has been built into the PWM’ ...
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... R FILTER I = 3mA (typ.) OP EXAMPLE: With a wanting voltage called, V and the CM6800T driving a total gate charge of 90nC at 100kHz (e.g. 1 IRF840 MOSFET and 2 IRF820 MOSFET), the gate driver current required is: μ A supplies Choose R DEALY The CM6800T should be locally bypassed with a 1.0 ceramic capacitor. In most applications, an electrolytic ...
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... Calculation and evaluation have shown that the 120Hz component of the PFC’s output ripple voltage can be reduced by as much as 30% using this method. 2010/08/03 Rev. 1.2 CM6800T EPA/85+ PFC+PWM COMBO CONTROLLER Design for High Efficient Power Supply Champion Microelectronic Corporation (Turbo-Speed PFC+Green PWM) ...
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... IN5406 GND 380VDC 13K 1% 470pF 380VDC PWM OUT 10 20N60 10K 1uF BYV-26EGP 20 BYV-26EGP 10 EI10 PC40 10K PWM IS 2010/08/03 Rev. 1.2 CM6800T EPA/85+ PFC+PWM COMBO CONTROLLER + 1 EMI Circuit 47 3M1% VCC 22uF/25V 0.1uf/25v + VCC ISENSE 200K 1% 16 VEAO 0.47uF/16V 0.047uF 2 ...
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... IN5406 GND 380VDC 13K 1% 470pF 380VDC PWM OUT 10 20N60 10K 1uF BYV-26EGP 20 BYV-26EGP 10 EI10 PC40 10K PWM IS 2010/08/03 Rev. 1.2 CM6800T EPA/85+ PFC+PWM COMBO CONTROLLER + 1 EMI Circuit 47 3M1% VCC 22uF/25V + 0.1uf/25v VCC ISENSE 200K 1% 16 VEAO 0.47uF/16V 0.047uF 2 ...
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... IN5406 GND 380VDC 13K 1% 470pF 380VDC PWM OUT 10 20N60 10K 1uF BYV-26EGP 20 BYV-26EGP 10 EI10 PC40 10K PWM IS 2010/08/03 Rev. 1.2 CM6800T EPA/85+ PFC+PWM COMBO CONTROLLER + 1 EMI Circuit 47 3M1% VCC 22uF/25V 0.1uf/25v + 13 3 VCC ISENSE 200K VEAO 0.47uF/16V 0.047uF 2 ...
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... ISO1A 817C 380VDC PWM OUT 10 20N60 10K 1uF BYV-26EGP 20 BYV-26EGP 10 EI10 PC40 10K PWM IS 2010/08/03 Rev. 1.2 CM6800T EPA/85+ PFC+PWM COMBO CONTROLLER + 1 EMI Circuit 47 3M1% VCC 22uF/25V 0.1uf/25v + 13 3 VCC ISENSE 200K VEAO 0.47uF/16V 0.047uF 2 ...
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... PACKAGE DIMENSION PIN 1 ID 2010/08/03 Rev. 1.2 CM6800T EPA/85+ PFC+PWM COMBO CONTROLLER Design for High Efficient Power Supply 16-PIN SOP (S16) θ 16-PIN PDIP (P16) Champion Microelectronic Corporation (Turbo-Speed PFC+Green PWM) θ 26 ...
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... HsinChu City, Taiwan +886-3-567 9979 +886-3-567 9909 http://www.champion-micro.com 2010/08/03 Rev. 1.2 CM6800T EPA/85+ PFC+PWM COMBO CONTROLLER Design for High Efficient Power Supply IMPORTANT NOTICE CMC integrated circuit products are not designed, Sales & Marketing 21F., No. 96, Sec. 1, Sintai 5th Rd., Sijhih City, Taipei County 22102, Taiwan, R ...