Champion CM6800T, Общее описание устройства

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CM6800T
(Turbo-Speed PFC+Green PWM)
http://www.championmicro.com.tw
EPA/85+ PFC+PWM COMBO CONTROLLER
Design for High Efficient Power Supply
2010/08/03
Rev. 1.2
Champion Microelectronic Corporation 6
ELECTRICAL CHARACTERISTICS:
(Conti.) Unless otherwise stated, these specifications apply Vcc=+14V, R
T
= 5.88 k Ω , C
T
= 1000pF,
T
A
=Operating Temperature Range (Note 1)
CM6800T
Symbol Parameter Test Conditions
Min. Typ. Max.
Unit
Current Error Amplifier (g
mi
)
Input Voltage Range (Isense pin)
-1.2 0.7 V
Transconductance V
NONINV
= V
INV
, IEAO = 1.5V @ T=25
℃
50 67 85
μ
mho
Input Offset Voltage VEAO=0V, IAC is open -10 50 mV
Output High Voltage
6.8 7.4 7.7 V
Output Low Voltage
0.1 0.4 V
Sink Current
I
SENSE
= -0.5V, IEAO = 1.5V @ T=25
℃ -40 -34 -28
μ
A
Source Current
I
SENSE
= +0.5V, IEAO = 4.0V @ T=25
℃
27 32 37
μ
A
Open Loop Gain DC Gain 30 40 dB
Power Supply Rejection Ratio 11V < V
CC
< 16.5V 60 75 dB
PFC OVP Comparator
Threshold Voltage 2.60 2.75 2.85 V
Hysteresis 130 220 mV
PFC Green Power Detect Comparator
Veao Threshold Voltage 0.14 0.26 0.4 V
Tri-Fault Detect
Fault Detect HIGH 2.70 2.85 3.0 V
Time to Fault Detect HIGH V
FB
=V
FAULT DETECT LOW
to
V
FB
=OPEN, 470pF from V
FB
to GND
2 4 ms
Fault Detect Low 0.1 0.28 0.4 V
PFC I
LIMIT
Comparator
Threshold Voltage -1.35 -1.25 -1.15 V
(PFCI
LIMIT
– Gain Modulator
Output)
300 450 mV
Delay to Output (Note 4) Overdrive Voltage = -100mV 700 ns