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CM6800A データシート PDF ( 特性, スペック, ピン接続図 )

部品番号 CM6800A
部品説明 LOW START-UP CURRENT PFC/PWM CONTROLLER COMBO
メーカ Champion Microelectronic
ロゴ Champion Microelectronic ロゴ 
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CM6800A Datasheet, CM6800A PDF,ピン配置, 機能
CM6800A
LOW START-UP CURRENT PFC/PWM CONTROLLER COMBO
GENERAL DESCRIPTION
FEATURES
The CM6800A 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, and results in a power supply that fully compiles with
IEC-1000-3-2 specifications. Intended as a BiCMOS
version of the industry-standard ML4824, CM6800A
includes circuits for the implementation of leading edge,
www.DataSahveeerta4gUe.cocmurrent, “boost” type power factor correction and a
trailing edge, pulse width modulator (PWM). Gate-driver
with 1A capabilities minimizes the need for external driver
circuits. Low power requirements improve efficiency and
reduce component costs.
An over-voltage comparator shuts down the PFC section in
the event of a sudden decrease in load. The PFC section
also includes peak current limiting and input voltage
brownout protection. The PWM section can be operated in
current or voltage mode, at up to 250kHz, and includes an
accurate 50% duty cycle limit to prevent transformer
saturation.
CM6800A includes an additional folded-back current limit
for PWM section to provide short circuit protection function.
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Patent Number #5,565,761, #5,747,977, #5,742,151,
#5,804,950, #5,798,635
Pin to pin compatible with ML4800 and FAN6800
Additional folded-back current limit for PWM section.
23V Bi-CMOS process
VIN OK turn on PWM at 2.25V instead of 1.5V(ML4800).
Internally synchronized leading edge PFC and trailing edge
PWM in one IC
Slew rate enhanced transconductance error amplifier for
ultra-fast PFC response
Low start-up current (100 μ A typ.)
Low operating current (3.0mA type.)
Low total harmonic distortion, high PF
Reduces ripple current in the storage capacitor between the
PFC and PWM sections
Average current, continuous or discontinuous boost leading
edge PFC
VCC OVP Comparator, Low Power Detect Comparator
PWM configurable for current mode or voltage mode
operation
Current fed gain modulator for improved noise immunity
Brown-out control, over-voltage protection, UVLO, and soft
start, and Reference OK
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 CONFIGURATION
SOP-16 (S16) / PDIP-16 (P16)
Top View
1
IEAO
VEAO
16
2 IAC
VFB 15
3
ISENSE
VREF
14
4
VRMS
VCC
13
5
SS PFC OUT
12
6
VDC
PWM OUT
11
7
RAMP1
GND
10
8
RAMP2
DC ILIMIT
9
2006/10/11 Rev. 1.3
Champion Microelectronic Corporation
Page 1

1 Page



CM6800A pdf, ピン配列
CM6800A
LOW START-UP CURRENT PFC/PWM CONTROLLER COMBO
BLOCK DIAGRAM (CM6800A)
16
VEAO
1
IEAO
VCC
13
VCC
15 VFB
2.5V
www.DataSh2eeIAtC4U.com
VRMS
4
3 ISENSE
7 RAMP1
gmv
-
+
.
0.3V
LOW POWER
DETECT
COMPARATOR 3.5K
GAIN
MODULATOR
gmi
+
.
-
3.5K
VCC
17.9V
+
-
OSCILLATOR
VCC OVP
+
-
2.75V
PFC OVP
+
.
-
-1V +
-
PFC ILIMIT
8 RAMP2
350
SW SPST
DUTY CYCLE
LIMIT
PWM
DUTY
7.5V
REFERENCE
SQ
RQ
VREF
14
POWER
FACTOR
CORRECTOR
MPPFC
VCC
SQ
RQ
PFC OUT
12
MNPFC
GND
CLK
PFCOUT
PWMOUT
6
VDC
Vcc
20uA350
1V
5 SS
SW SPST
VREF
DC ILIMIT
9
10 GND
SW SPST
SW SPST
VFB
2.25V
-
.
+
VIN OK
1V
DC ILIMIT
SQ
RQ
QS
R
VCC
UVLO
CM6800A(ON:13V/OFF:10V)
MPPWM
VCC
PWM OUT
11
MNPWM
GND
PULSE
WIDTH
MODULATOR
ORDERING INFORMATION
Part Number
CM6800AGIP*
CM6800AGIS*
*Note: G : Suffix for Pb Free Product
Temperature Range
-40to 125
-40to 125
Package
16-Pin PDIP (P16)
16-Pin Wide SOP (S16)
2006/10/11 Rev. 1.3
Champion Microelectronic Corporation
Page 3


3Pages


CM6800A 電子部品, 半導体
CM6800A
LOW START-UP CURRENT PFC/PWM CONTROLLER COMBO
ELECTRICAL CHARACTERISTICS (Conti.) Unless otherwise stated, these specifications apply
Vcc=+15V, RT = 30.16k, CT = 1000pF, TA=Operating Temperature Range (Note 1)
Symbol
Parameter
Test Conditions
CM6800A
Min.
Typ.
Oscillator
Initial Accuracy
TA = 25
60
Voltage Stability
Temperature Stability
11V < VCC < 16.5V
1
2
Total Variation
www.DataSheet4U.com Ramp Valley to Peak Voltage
Line, Temp
52
2.5
PFC Dead Time (Note 4)
360
CT Discharge Current
VRAMP2 = 0V, VRAMP1 = 2.5V
Reference
6.5
Output Voltage
TA = 25, I(VREF) = 1mA
7.4 7.5
Line Regulation
Load Regulation
11V < VCC < 16.5V
0mA < I(VREF) < 7mA; TA = 0~70
0mA < I(VREF) < 5mA; TA = -40~85
10
10
10
Temperature Stability
0.4
Total Variation
Line, Load, Temp
7.35
Long Term Stability
TJ = 125, 1000HRs
5
PFC
Minimum Duty Cycle
Maximum Duty Cycle
VIEAO > 4.0V
VIEAO < 1.2V
90 95
Output Low Rdson
IOUT = -20mA at room temp
IOUT = -100mA at room temp
IOUT = 10mA, VCC = 9V at room temp
0.4
Output High Rdson
Rise/Fall Time (Note 4)
IOUT = 20mA at room temp
IOUT = 100mA at room temp
CL = 1000pF
PWM
15
15
50
Duty Cycle Range
0-45 0-47
Output Low Rdson
Output High Rdson
Rise/Fall Time (Note 4)
PWM Comparator Level Shift
IOUT = -20mA at room temp
IOUT = -100mA at room temp
IOUT = 10mA, VCC = 9V
IOUT = 20mA at room temp
IOUT = 100mA at room temp
CL = 1000pF
0.4
15
15
50
0.7 1.0
Supply
Start-Up Current
Operating Current
VCC = 12V, CL = 0 at room temp
14V, CL = 0
100
3.0
Undervoltage Lockout Threshold
CM6800A
12.74
13
Undervoltage Lockout Hysteresis
CM6800A
2.85 3.0
Note 1: Limits are guaranteed by 100% testing, sampling, or correlation with worst-case test conditions.
Note 2: Includes all bias currents to other circuits connected to the VFB pin.
Note 3: Gain = K x 5.375V; K = (ISENSE – IOFFSET) x [IAC (VEAO – 0.625)]-1; VEAOMAX = 6V
Note 4: Guaranteed by design, not 100% production test.
Max.
70
74
640
15
7.6
25
20
20
7.65
25
0
15
15
0.8
20
20
0-49
15
15
0.8
20
20
1.1
150
7.0
13.26
3.15
Unit
kHz
%
%
kHz
V
ns
mA
V
mV
mV
mV
%
V
mV
%
%
ohm
ohm
V
ohm
ohm
ns
%
ohm
ohm
V
ohm
ohm
ns
V
μA
mA
V
V
2006/10/11 Rev. 1.3
Champion Microelectronic Corporation
Page 6

6 Page





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