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參數(shù)資料
| 型號(hào)： | IR3086 |
| 廠商： | International Rectifier |
| 英文描述： | PHASE IC WITH OVP, FAULT AND OVERTEMP DETECT |
| 中文描述： | 相位IC帶OVP，故障及超溫檢測(cè) |
| 文件頁數(shù)： | 13/15頁 |
| 文件大?。?/td> | 417K |
| 代理商： | IR3086 |
IR3086
Page 13 of 15
9/1/03
The IR3086 has the ability to detect if a phase stops switching and can provide this information to the system through
the PHSFLT output pin. If a phase stops switching its output current will drop to zero and the output of its IR3086
current sense amp will be the DACIN voltage. The Share Adjust Amplifier reacts to this by increasing the Ramp Slope
Adjust current until it exceeds the externally programmable PWM Ramp bias current. This will cause the voltage at the
PWMRMP pin to drop below its normal operating range. The Fault Comparator trips and drives the PHSFLT output to
ground when the voltage on the PWMRMP pin falls below 91% of the DACIN voltage. PHSFLT is an open-collector
output and should be pulled up to a voltage source through a resistor.
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 7 – 5 Phase IR3081/3086 EVRD10 Converter
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