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參數(shù)資料
| 型號： | MIC2595R-2BM TR |
| 廠商： | Micrel Inc |
| 文件頁數(shù)： | 25/29頁 |
| 文件大小： | 4205K |
| 描述： | IC CTRLR HOT SWAP NEG HV 14-SOIC |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 類型： | 熱交換控制器 |
| 應(yīng)用： | 通用 |
| 內(nèi)部開關(guān)： | 無 |
| 電源電壓： | -19 V ~ -80 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 14-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 14-SOIC |
| 包裝： | 帶卷 (TR) |
| 其它名稱： | MIC2595R-2BMTR MIC2595R-2BMTR-ND |
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Micrel
MIC2589/MIC2595
December 2005
25
M9999-120505
(408) 955-1690
PCB Layout Considerations
4-Wire Kelvin Sensing
Because of the low value typically required for the
sense resistor, special care must be used to measure
accurately the voltage drop across it. Specifically, the
measurement technique across each R
SENSE
must
employ 4-wire Kelvin sensing. This is simply a means
of making sure that any voltage drops in the power
traces connecting to the resistors are not picked up by
the signal conductors measuring the voltages across
the sense resistors.
Figure 9 illustrates how to implement 4-wire Kelvin
sensing. As the figure shows, all the high current in
the circuit (from V
EE
through R
SENSE
, and then to the
source of the output MOSFET) flows directly through
the power PCB traces and R
SENSE
. The voltage drop
resulting across R
SENSE
is sampled in such a way that
the high currents through the power traces will not
introduce any parasitic voltage drops in the sense
leads. It is recommended to connect the hot swap
controllers sense leads directly to the sense resistors
metalized contact pads.
Other Layout Considerations
Figure 10 is a suggested PCB layout diagram for the
MIC2589/MIC2595. Many hot swap applications will
require load currents of several amperes. Therefore,
the power (V
EE
and Return) trace widths (W) need to
be wide enough to allow the current to flow while the
rise in temperature for a given copper plate (e.g., 1oz.
or 2oz.) is kept to a maximum of 10癈 to 25癈. The
return (or power ground) trace should be the same
width as the positive voltage power traces (input/load)
and isolated from any ground and signal planes so
that the controllers power is common mode. Also,
these traces should be as short as possible in order to
minimize the IR drops between the input and the load.
Finally, the use of plated-through vias will be
necessary to make circuit connections to the power,
ground and signal planes of multi-layer PCBs.
R
SENSE
Power Trace
From V
EE
PCB Track Width:
0.03" per Ampere
using 1oz Cu
Power Trace
To MOSFET Source
Signal Trace
to MIC2589/MIC2595 V
EE
Pin
Signal Trace
to MIC2589/MIC2595 SENSE Pin
Note: Each SENSE lead trace shall be
balanced for best performance with equal
length/equal aspect ratio.
R
SENSE
metalized
contact pads
Figure 9. 4-Wire Kelvin Sense Connections for
R
SENSE
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參數(shù)描述 |
|---|---|
| MIC2595R-2YM | 功能描述:熱插拔功率分布 Negative Voltage Hot-Swap Controller - Lead Free RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MIC2595R-2YM TR | 功能描述:熱插拔功率分布 Negative Voltage Hot-Swap Controller - Lead Free RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MIC2595R-2YM-TR | 功能描述:Hot Swap Controller, Sequencer 1 Channel -48V 14-SOIC 制造商:microchip technology 系列:- 包裝:剪切帶（CT） 零件狀態(tài):停產(chǎn) 類型:熱交換控制器，序列發(fā)生器 通道數(shù):1 內(nèi)部開關(guān):無 應(yīng)用:-48V 特性:自動(dòng)重試 可編程特性:限流，故障超時(shí)，UVLO 電壓 - 電源:-80 V ~ -19 V 電流 - 輸出（最大值）:- 工作溫度:-40°C ~ 85°C 電流 - 電源:4mA 安裝類型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應(yīng)商器件封裝:14-SOIC 功能引腳:CFILTER，CNLD，DRAIN，PGTIMER，OFF，ON，/PWRGD1，/PWRGD2，/PWRGD3 標(biāo)準(zhǔn)包裝:1 |
| MIC2596-1BTS | 功能描述:IC SWITCH HOT SWAP DUAL 20-TSSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:100 系列:- 類型:熱插拔開關(guān) 應(yīng)用:通用 內(nèi)部開關(guān):是 電流限制:可調(diào) 電源電壓:9 V ~ 13.2 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:10-TDFN-EP（3x3） 包裝:管件 |
| MIC2596-1BTS TR | 功能描述:IC SWITCH HOT SWAP DUAL 20-TSSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:100 系列:- 類型:熱插拔開關(guān) 應(yīng)用:通用 內(nèi)部開關(guān):是 電流限制:可調(diào) 電源電壓:9 V ~ 13.2 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:10-TDFN-EP（3x3） 包裝:管件 |
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