IR2177S International Rectifier, IR2177S Datasheet - Page 12

• Manufacturer Part Number: IR2177S
• Description: 600V Phase Current Sensing IC for AC Motor Control in a 16-Lead SOIC package. Ratiometric analog output suitable for DSP A/D interface.
• Manufacturer: International Rectifier

Specifications of IR2177S

• Family Hvic: General Purpose HVICs
• Channels: 1
• Topology: Current Sense
• Application: General Purpose / Motor Control
• Voffset: 600
• Over Current Protection: Yes
• Package: 16 Lead
• Part Status: Active & Preferred

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
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