CM6500UN (1MHz PFC)
http://www.championmicro.com.tw
EPA/90+ ZVS-Like PFC CONTROLLER
Design for High Efficient Power Supply at both Full Load and Light Load
ELECTRICAL CHARACTERISTICS
(Unless otherwise stated, these specifications apply Vcc=+14V, PGTHL=+2.0V, RT = 27kΩ, CT = 1000pF, TA=Operating
Temperature Range (Note 1)
CM6500UN
Symbol
Parameter
Test Conditions
Unit
Min.
Typ.
Max.
μA
μA
Sink Current
ISENSE = -0.5V, IEAO = 1.5V
ISENSE = +0.5V, IEAO = 4.0V
-45
-35
-25
Source Current
25
30
60
35
40
75
45
Open Loop Gain
DC Gain
dB
dB
Power Supply Rejection Ratio
11V < VCC < 16.5V
PFC OVP Comparator
Threshold Voltage
2.65
140
2.75
0.4
2.85
240
V
Hysteresis
mV
PFC Green Power Detect Comparator
Veao Threshold Voltage
0.3
0.5
V
Tri-Fault Detect
Fault Detect HIGH
2.65
2.75
2
2.85
4
V
ms
V
Time to Fault Detect HIGH
VFB=VFAULT DETECT LOW to
VFB=OPEN, 470pF from VFB to GND
Fault Detect LOW
PFC ILIMIT Comparator(PFC current limit)
Threshold Voltage
0.3
0.4
0.5
-1.375
300
-1.25
450
-1.125
V
(PFCILIMIT– Gain Modulator
Output)
mV
ns
Delay to Output (Note 4)
PGTHL(set up PGB pull high;turn off point)
PGB_CMP_LOW
700
Sweep VFB than check PGB CMP pull low
2.1
2.3
Setup Vref 分壓, PGTHL=2V, VEAO=3V
Sweep VFB Voltage Check PGB CMP
Pull-High
PGB_CMP_HIGH
1.949
2.035
V
Remember (Full Load) – (Light
Load) Hysteresis
130
150
170
mV
2014/11/11 Rev. 1.0
Champion Microelectronic Corporation
7
CHAMP [ CHAMPION MICROELECTRONIC CORP. ]
