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CM6802A の電気的特性と機能

CM6802AのメーカーはChampion Microelectronicです、この部品の機能は「PFC/PWM COMBO CONTROLLER」です。


製品の詳細 ( Datasheet PDF )

部品番号 CM6802A
部品説明 PFC/PWM COMBO CONTROLLER
メーカ Champion Microelectronic
ロゴ Champion Microelectronic ロゴ 




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CM6802A Datasheet, CM6802A PDF,ピン配置, 機能
CM6802A/B/AH/BH (Dynamic Soft PFC/Green PWM)
http://www.championmicro.com.tw EPA/80++ ZVS-Like PFC/PWM COMBO CONTROLLER
Design for High Efficient Power Supply at both Full Load and Light Load
GENERAL DESCRIPTION
Switching to CM6802A/B/AH/BH from your existing
CM6800 family boards can gain the following advanced
performances:
1.) Around 2% efficiency gain when the output load is
below 40% of the full load.
2.) Hold Up time can be increased ~ 30% from the
existing 6800 power supply.
3.) 420V bulk capacitor value may be reduced PFC
boost ripple current can be reduced; therefore, the
boost inductor core size maybe reduced.
4.) No Load Consumption can be reduced 290mW at
270VAC.
5.) PWM transformer size can be smaller.
6.) To design 12V, 5V and 3.3V output filters can be
easy.
7.) The stress over the entire external power device is
reduced and EMI noise maybe reduced.
8.) Monotonic Output design is easy and more…Of
cause, the cost will be reduced.
CM6802A/B/AH/BH is pin to pin compatible with CM6800
family.
Beside all the goodies in the CM6800, it is designed to meet
the EPA/80+ regulation. With the proper design, its
efficiency of power supply can easily approach 85%.
To start evaluating CM6802A/B/AH/BH from the exiting
CM6800,CM6800A or ML4800 board, 6 things need to be
taken care before doing the fine tune:
1.) Change RAC resistor (on pin 2, IAC) from the old
value to a higher resistor value between 4.7 Mega
ohms to 8 Mega ohms.
2.) Change RTCT pin (pin 7) from the existing value to
RT=7.75K ohm and CT=1000pF to have
fpfc=55Khz, fpwm=55Khz, frtct=220Khz.
3.) Adjust all high voltage resistor around 5 mega ohm
or higher.
4.) VRMS pin (pin 4) needs to be 1.125V at
VIN=85VAC for universal input application from line
input from 85VAC to 270VAC. Both poles for the
Vrms of the CM6802A/B/AH/BH needs to
substantially slow than CM6800 about 5 to 10 times.
5.) At full load, the average Veao needs to around 4.5V
and the ripple on the Veao needs to be less than
250mV.
6.) Soft Start pin (pin 5), the soft start current has been
reduced
from
CM6800’s
20uA
to
CM6802A/B/AH/BH’s 10uA.Soft Start capacitor can
be reduced to 1/2 from your original CM6800
capacitor.
FEATURES
‹ Patents Pending
‹ Pin to pin compatible with CM6800,CM6800A,
ML4800 and FAN4800.
‹ 23V Bi-CMOS process.
‹ Designed for EPA/80++ efficiency.
‹ CM6802A/B : Selectable Boost output from 380V to
300V during light load.
‹ CM6802AH/BH: Selectable Boost output from 380V to
342V during light load.
‹ All high voltage resistors can be greater than 4.7 Mega
ohm (4.7 Mega to 8 Mega ohm) to improve the no load
consumption.
‹ Rail to rail CMOS Drivers with on, 60 ohm and off, 30
ohm for both PFC and PWM with two 17V zeners.
‹ Fast Start-UP Circuit without extra bleed resistor to aid
VCC reaches 13V sooner.
‹ Low start-up current (55uA typ.)
‹ Low operating current (2.5mA typ.)
‹ 16.5V VCC shunt regulator
‹ Leading Edge Blanking for both PFC and PWM.
‹ fRTCT = 4*fpfc =4*fpwm for CM6802A//AH
‹ fRTCT = 4*fpfc =2*fpwm for CM6802B/BH
‹ Dynamic Soft PFC to ease the stress of the Power
Device and Ease the EMI filter design.
‹ PFC Brown Out and PWM Brown Out
‹ Internally synchronized leading edge PFC and trailing
edge PWM in one IC to Reduces ripple current in the
420V storage capacitor between the PFC and PWM
sections.
‹ Low total harmonic distortion, THD and Power Factor
approaches 1.0.
‹ Average current, continuous or discontinuous boost
leading edge PFC.
‹ PWM configurable for current mode or feed-forward
voltage mode operation.
‹ Current fed Gain Modulator for improved noise immunity.
‹ Gain Modulator is a constant maximum power limiter.
‹ Brown-out control, over-voltage protection, UVLO, and
soft start, and Reference OK.
‹ PWM Short Circuit Protection
‹ Power Fold Back Protection
‹ Green Mode PWM for less no load consumption.
2012/05/10 Rev. 1.5
Champion Microelectronic Corporation
1

1 Page





CM6802A pdf, ピン配列
CM6802A/B/AH/BH (Dynamic Soft PFC/Green PWM)
http://www.championmicro.com.tw EPA/80++ ZVS-Like PFC/PWM COMBO CONTROLLER
Design for High Efficient Power Supply at both Full Load and Light Load
6 VDC DC to DC PWM voltage feedback input.
RAMP 1
7
(RTCT)
Oscillator timing node; timing set by RT and CT
0
0.8
8
RAMP 2
In current mode, this pin functions as the current sense
input; when in voltage mode, it is the feed-forward sense
(PWM RAMP) input from PFC output 380V (feed forward ramp).
0
10 V
4V
VDCmax-1.8 V
9 DC ILIMIT PWM current limit comparator input
10
GND
Ground
0 1V
11 PWM OUT PWM driver output
0
VCC
V
12 PFC OUT PFC driver output
0
VCC
V
13 VCC Positive supply for CM6802A/B/AH/BH
10 15 18 V
14
VREF
Maximum 4mA buffered output for the internal 7.5V
reference when VCC=14V
7.5
V
15
VFB PFC transconductance voltage error amplifier input
0 2.5 3 V
16
VEAO
PFC transconductance voltage error amplifier output
(GmV)
0
6V
ORDERING INFORMATION
Part Number
CM6802A/B/AH/BHGIP*
CM6802A/B/AH/BHGIS*
CM6802A/B/AH/BHGISTR*
CM6802A/B/AH/BHXIP*
CM6802A/B/AH/BHXIS*
CM6802A/B/AH/BHXISTR*
*Note: G : Suffix for Pb Free Product
TR : Package is Typing Reel
X : Suffix for Halogen Free Product
Temperature Range
-40to 125
-40to 125
-40to 125
-40to 125
-40to 125
-40to 125
Package
16-Pin PDIP (P16)
16-Pin Narrow SOP (S16)
16-Pin Narrow SOP (S16)
16-Pin PDIP (P16)
16-Pin Narrow SOP (S16)
16-Pin Narrow SOP (S16)
2012/05/10 Rev. 1.5
Champion Microelectronic Corporation
3


3Pages


CM6802A 電子部品, 半導体
CM6802A/B/AH/BH (Dynamic Soft PFC/Green PWM)
http://www.championmicro.com.tw EPA/80++ ZVS-Like PFC/PWM COMBO CONTROLLER
Design for High Efficient Power Supply at both Full Load and Light Load
ELECTRICAL CHARACTERISTICS:
(Conti.) Unless otherwise stated, these specifications apply Vcc=+14V, RT = 7.75 k, CT = 1000pF,
TA=Operating Temperature Range (Note 1)
Symbol
Parameter
Test Conditions
Sink Current
Source Current
Open Loop Gain
ISENSE = -0.5V, IEAO = 1.5V
ISENSE = +0.5V, IEAO = 4.0V
DC Gain
Power Supply Rejection Ratio 11V < VCC < 16.5V
PFC OVP Comparator
Threshold Voltage
Hysteresis
PFC Green Power Detect Comparator
Veao Threshold Voltage
Tri-Fault Detect
Fault Detect HIGH
Time to Fault Detect HIGH
Fault Detect LOW
PFC ILIMIT Comparator
Threshold Voltage
(PFCILIMIT– Gain Modulator
Output)
Delay to Output (Note 4)
DC ILIMIT Comparator
Threshold Voltage
Delay to Output (Note 4)
DC to DC PWM Brown Out Comparator
OK Threshold Voltage
Hysteresis
VFB=VFAULT DETECT LOW to
VFB=OPEN, 470pF from VFB to GND
Overdrive Voltage = -100mV
Overdrive Voltage = 100mV
CM6802A/B/AH/BH
Min.
Typ.
Max.
-42 -33 -30
28 31 42
30 40
60 75
Unit
μA
μA
dB
dB
2.70 2.85
3.0
V
200 300 mV
0.15 0.25 0.35
V
2.70 2.85
2
0.4 0.5
3.0
4
0.6
V
ms
V
-1.10 -1.00 -0.90
100 200
700
V
mV
ns
0.92 1.0 1.08
700
V
ns
2.20 2.36 2.52
V
900 950 1000 mV
2012/05/10 Rev. 1.5
Champion Microelectronic Corporation
6

6 Page



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共有リンク

Link :


部品番号部品説明メーカ
CM6802

NO BLEED RESISTOR GREEN MODE PFC/PWM CONTROLLER COMBO

Champion Microelectronic
Champion Microelectronic
CM6802A

PFC/PWM COMBO CONTROLLER

Champion Microelectronic
Champion Microelectronic
CM6802AH

PFC/PWM COMBO CONTROLLER

Champion Microelectronic
Champion Microelectronic
CM6802B

PFC/PWM COMBO CONTROLLER

Champion Microelectronic
Champion Microelectronic


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