IR22771S International Rectifier, IR22771S Datasheet - Page 10

• Manufacturer Part Number: IR22771S
• Description: 1200V Phase Current Sensing IC for AC Motor Control in a 16-Lead SOIC package
• Manufacturer: International Rectifier

Specifications of IR22771S

• Family Hvic: General Purpose HVICs
• Channels: 1
• Topology: Current Sense
• Application: General Purpose / Motor Control
• Voffset: 1200
• Over Current Protection: Yes
• Package: 16 Lead
• Part Status: Active & Preferred

10
Triangular
SYNC (0)
Dn =
PO
1
T
V
V
off
IN+
T
IN-
cycle
_
T
cycle
off_cycle1
1
2
Cycle 1
T
cycle1
High voltage
Dn =
Over current
detection
Figure 9: Over current block diagram
2
T
T
Figure 8: PO Duty Cycle
off
T
off_cycle2
cycle
_
cycle
Cycle 2
2
T
3
cycle2
T
Low voltage
Dn =
off_cycle3
IR22771S/IR21771S(PbF)
3
Cycle 3
T
S
R
cycle3
T
off
T
D
cycle
_
cycle
3
4
T
off_cycle4
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Cycle 4
OC
V
PO
SS
supply
Ext