IR1110 International Rectifier Corp., IR1110 Datasheet - Page 10

• Manufacturer Part Number: IR1110
• Description: Soft Start Controller Ic In A 64-lead Mqfp Package
• Manufacturer: International Rectifier Corp.

IR1110
Functional Block Diagram
10
Firing Angle,
Line Fault
High/Low
VOLTAGE
VBUS
LINE
VBUS
R E F
+
3
-
-
+
Vin
< 0 >
Line Voltage
Processing
Vbus Dip
Detector
Clamp
Ramp
Amp
Error
Amp
ENABLE
ADVANCE INFORMATION
1 + s
3
1
Generator
Ramp
RESET
3
Timing wave
Timing wave
Line Sync
Watchdog
generator
applied volts*seconds
reference
Figure 1
Figure 2
voltage
&
Firing
Timing wave
Reference
Generator
3
COMP
time
COMP
Phase Loss
Detect
www.irf.com
3
Line Loss
Single Phase
PULSES
FIRING
S C R