ML4826 Fairchild, ML4826 Datasheet - Page 13

• Manufacturer Part Number: ML4826
• Description: PFC and Dual Output PWM Controller Combo
• Manufacturer: Fairchild

PRODUCT SPECIFICATION
REV. 1.0.5 2/14/02
+
DC
VIN
OSC
REF
I1
L1
U4
+
–
+
DC
EA
RAMP
CLK
U3
VIN
REF
OSC
Figure 9. Typical Leading Edge Control Scheme.
U4
Figure 8. Typical Trailing Edge Control Scheme.
L1
I1
+
–
EA
RAMP
CLK
VEAO
U3
SW2
SW1
+
–
SW2
CMP
U1
SW1
I2
+
–
C1
I2
U1
C1
I4
I3
I4
I3
D
R
DFF
CLK
U2
D
R
DFF
CLK
RL
U2
Q
Q
RL
Q
Q
RAMP
VSW1
VEAO
RAMP
VSW1
VEAO
TIME
TIME
TIME
TIME
ML4826
13