IR2177 International Rectifier Corp., IR2177 Datasheet - Page 12
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IR2177
Manufacturer Part Number
IR2177
Description
Phase Current Sensor Ic For Ac Motor Control
Manufacturer
International Rectifier Corp.
Datasheet
1.IR2177.pdf
(20 pages)
- Current page: 12 of 20
- Download datasheet (484Kb)
12
Triangular
SYNC (0)
Dn =
PO
1
V
V
IN +
IN -
T
off
T
cycle
_
T
cycle
off_cycle1
1
2
H igh voltage
Cycle 1
T
cycle1
O ver current
detection
Figure 9: Over current block diagram
Dn =
2
Figure 8: PO Duty Cycle
T
T
off
T
off_cycle2
cycle
_
cycle
Cycle 2
2
T
3
cycle2
Low voltage
T
S
R
Dn =
off_cycle3
3
Cycle 3
T
D
cycle3
T
off
T
cycle
_
IR2277S/IR2177S(PbF)
cycle
3
4
T
V
O C
P O
off_cycle4
S S
supply
Cycle 4
E xt
www.irf.com
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