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參數(shù)資料
| 型號： | IR3088A |
| 廠商： | International Rectifier |
| 英文描述： | XPHASETM PHASE IC WITH FAULT AND OVERTEMP DETECT |
| 中文描述： | XPHASETM相集成電路及超溫故障檢測 |
| 文件頁數(shù)： | 12/34頁 |
| 文件大小： | 1264K |
| 代理商： | IR3088A |
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IR3088A
Phase Fault
It is possible for multiphase converters to appear to be working correctly with one or more phases not functioning.
The output voltage can still be regulated and the full load current may still be delivered. However, the remaining
phase(s) will be stressed far beyond their intended design limits and are likely to fail. Loss of a phase can occur due
to poor solder connections or mounting during the manufacturing process, or can occur in the field. The most
common failure mode of a buck converter is failure of the high side MOSFET. The IR3088A 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 IR3088A current sense amplifier 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
DISTRIBUTION
IMPEDANCE
COUT
CBST
CVCCL
DBST
RVCC
RPWMRMP
R
1nF
C
CBST
CVCCL
DBST
RVCC
CVCC
CVCC
CSCOMP
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
IR3088A
PHASE
IC
RCS-
CCS+
ROCSET
R
R
CVDAC
R
RCS+
RBIASIN
RBIASIN
R
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
IR3088A
PHASE
IC
R
CCS+
R
CCS+
RSHARE
CCS-
RCS+
RCS+
RVDAC
C
R
R
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
IR3088A
PHASE
IC
R
RBIASIN
RCS-
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
IR3081
CONTROL
IC
CCS-
CSCOMP
C
ROSC
C
CCS-
CSCOMP
RPWMRMP
RCS-
RPWMRMP
POWERGOOD
VRHOT
PHASE FAULT
VOUT SENSE-
12V
VID5
VID0
VID1
VID3
VID4
ENABLE
VID2
VOUT+
VOUT SENSE+
VOUT-
CIN
CBST
CVCCL
DBST
CVCC
RVCC
CIN
RCP
RFB1
10 ohm
RVCC
RFB
CCP1
0.1uF
CVCC
RFB21
CFB
CCP
CIN
0.1uF
RFB22
Figure 7. IR3081/3088A 12V to 2.5V 3 Phase Converter
Page 12 of 34
9/30
/04
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| IR3088AM | XPHASETM PHASE IC WITH FAULT AND OVERTEMP DETECT |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IR3088A_05 | 制造商:IRF 制造商全稱:International Rectifier 功能描述:XPHASETM PHASE IC WITH FAULT AND OVERTEMP DETECT |
| IR3088AM | 制造商:IRF 制造商全稱:International Rectifier 功能描述:XPHASETM PHASE IC WITH FAULT AND OVERTEMP DETECT |
| IR3088AMPBF | 功能描述:IC XPHASE CONTROL 20L-MLPQ RoHS:是 類別:集成電路 (IC) >> PMIC - 電源管理 - 專用 系列:XPhase™ 應(yīng)用說明:Ultrasound Imaging Systems Application Note 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:37 系列:- 應(yīng)用:醫(yī)療用超聲波成像，聲納 電流 - 電源:- 電源電壓:2.37 V ~ 6 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:56-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:56-TQFN-EP（8x8） 包裝:管件 |
| IR3088AMTR | 功能描述:IC XPHASE W/FAULT DET 20L-MLPQ RoHS:否 類別:集成電路 (IC) >> PMIC - 電源管理 - 專用 系列:XPhase™ 應(yīng)用說明:Ultrasound Imaging Systems Application Note 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:37 系列:- 應(yīng)用:醫(yī)療用超聲波成像，聲納 電流 - 電源:- 電源電壓:2.37 V ~ 6 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:56-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:56-TQFN-EP（8x8） 包裝:管件 |
| IR3088AMTRPBF | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 XPHASE IC W/ FAULT OVERTEMP DETECT RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
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