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参数资料
| 型号： | IR3081MTR |
| 厂商： | International Rectifier |
| 英文描述： | XPHASE VR 10.0 CONTROL IC |
| 中文描述： | XPHASE村10.0控制IC |
| 文件页数： | 18/20页 |
| 文件大小： | 396K |
| 代理商： | IR3081MTR |
IR3081
Page 18 of 20
9/1/03
APPLICATIONS INFORMATION
R
R
RVFB
0.1uF
CCS+
RCS+
0.1uF
CIN
IR3086
PHASE
IC
D
1
B
2
RMPIN+
1
RMPIN-
2
GATEH
14
VCCH
15
C
1
P
1
HOTSET
3
VRHOT
4
S
6
E
7
PGND
13
GATEL
12
L
9
P
8
ISHARE
5
V
1
VCCL
11
C
1
POWERGOOD
VRHOT
PHASE FAULT
VOUT-
VOUT SENSE-
VOUT SENSE+
VOUT+
RVDRP
DISTRIBUTION
IMPEDANCE
COUT
R
0.1uF
R
CCS+
0.1uF
RBIASIN
R
IR3086
PHASE
IC
D
1
B
2
RMPIN+
1
RMPIN-
2
GATEH
14
VCCH
15
C
1
P
1
HOTSET
3
VRHOT
4
S
6
E
7
PGND
13
GATEL
12
L
9
P
8
ISHARE
5
V
1
VCCL
11
C
1
0.1uF
C
CCS-
RCS-
R
RPWMRMP
CSCOMP
10
RCS+
0.1uF
0.1uF
R
CCS+
RCS-
RBIASIN
R
IR3086
PHASE
IC
D
1
B
2
RMPIN+
1
RMPIN-
2
GATEH
14
VCCH
15
C
1
P
1
HOTSET
3
VRHOT
4
S
6
E
7
PGND
13
GATEL
12
L
9
P
8
ISHARE
5
V
1
VCCL
11
C
1
10
0.1uF
C
CCS-
RPWMRMP
CSCOMP
R
RCS+
RBIASIN
RCS-
CCS-
0.1uF
CCS+
0.1uF
R
IR3086
PHASE
IC
D
1
B
2
RMPIN+
1
RMPIN-
2
GATEH
14
VCCH
15
C
1
P
1
HOTSET
3
VRHOT
4
S
6
E
7
PGND
13
GATEL
12
L
9
P
8
ISHARE
5
V
1
VCCL
11
C
1
R
C
CCS-
RCS-
RBIASIN
RPWMRMP
CSCOMP
10
0.1uF
R
RCS+
C
CSCOMP
10
0.1uF
R
RPWMRMP
0.1uF
0.1uF
IR3086
PHASE
IC
D
1
B
2
RMPIN+
1
RMPIN-
2
GATEH
14
VCCH
15
C
1
P
1
HOTSET
3
VRHOT
4
S
6
E
7
PGND
13
GATEL
12
L
9
P
8
ISHARE
5
V
1
VCCL
11
C
1
R
CCS+
CCS-
RCS-
RBIASIN
R
C
CSCOMP
10
0.1uF
RCS+
R
RPWMRMP
RSHARE
CVDAC
RVDAC
C
0.1uF
ROSC
RVFB
10
ROCSET
RVDRP
IR3081
CONTROL
IC
OSCDS
1
VID5
2
VID0
3
VID1
4
VID2
5
VID3
6
VID4
7
P
2
T
8
T
9
V
1
T
1
T
1
V
1
S
2
R
1
E
2
R
2
L
2
V
2
VBIAS
21
BBFB
20
EAOUT
19
FB
18
VDRP
17
IIN
16
OCSET
15
N
2
0.1uF
12V
VID3
VID4
VID1
VID2
VID5
VID0
ENABLE
Figure 8 – IR3081/3086 5 Phase VRM/EVRD 10.0 Converter
LAYOUT GUIDELINES
The following layout guidelines are recommended to reduce the parasitic inductance and resistance of the
PCB layout, therefore minimizing the noise coupled to the IC.
Dedicate at least one middle layer for a ground plane, which is then split into signal ground plane
(LGND) and power ground plane (PGND).
Connect the ground tab under the control IC to LGND plane through vias. Place the resistor ROSC as
close as possible to ROSC pin of the control IC, and place the over-current limit resistor ROCSET as
close as possible to OCSET and VDAC pins of the control IC.
Bus signals should not cross over the fast transition nodes, such as switching nodes and gate drive
output.
Use Kelvin connections for the current sense signals, and use the ground plane to shield the current
sense traces.
Use Kelvin connections for the remote voltage sense signals, and avoid crossing over the fast transition
nodes.
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