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參數(shù)資料
| 型號(hào)： | MIC2593-2BTQ TR |
| 廠商： | Micrel Inc |
| 文件頁數(shù)： | 24/26頁 |
| 文件大?。?/td> | 220K |
| 描述： | IC PCI HOT PLUG CTLR DUAL 48TQFP |
| 標(biāo)準(zhǔn)包裝： | 2,000 |
| 類型： | 熱交換控制器 |
| 應(yīng)用： | PCI，PCI-X |
| 內(nèi)部開關(guān)： | 無 |
| 電源電壓： | 3.3V，5V，±12V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 48-TQFP |
| 供應(yīng)商設(shè)備封裝： | 48-TQFP（7x7） |
| 包裝： | 帶卷 (TR) |
| 其它名稱： | MIC2593-2BTQTR MIC2593-2BTQTR-ND |
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Micrel, Inc.
MIC2593
September 2008
24
M9999-092208
MOSFET and Sense Resistor Selection Guide
Listed in Table 5 below, by Manufacturer and Type
Number, are some of the more popular MOSFET and
resistor types used in PCI hot plug applications.
Although far from comprehensive, this information will
constitute a good starting point for most designs.
Power Supply Decoupling
In general, prudent system design requires that power
supplies used for logic functions should have less than
100mV of noise at frequencies of 100kHz and above. In
particular, the 12V supply should have less than 100mV
of peak-to-peak noise at frequencies of 1MHz or higher.
This is because the 12V supply is the most negative
potential applied to the IC, and is therefore connected to
the device's substrate. All of the subcircuits integrated
onto the silicon chip are hence subjected by capacitive
coupling to any HF noise on the 12V supply. While
individual capacitances are quite low, the amount of
injected energy required to cause a "glitch" can also be
quite low at the internal nodes of high speed logic circuits.
Less obviously, but equally important, is the fact that the
internal charge pump for the 3.3V
AUX
supplies is
somewhat susceptible to noise on the +12V input when
that input is at or near zero volts. The +12V supply should
not carry HF noise in excess of 200mV peak-to-peak with
respect to chip ground when it is in the "off" state.
If either the 12V input, the +12V input, of both supplies
do carry significant HF noise (as can happen when they
are locally derived by a switching converter), the solution
is both small and inexpensive. An LC filter made of a
ferrite bead between the noisy power supply input and the
MIC2593, followed by a "composite capacitor" from the
affected MIC2593 input pin to ground, will suffice for
almost any situation. A good composite capacitor for this
purpose is the parallel combination of a 47礔 tantalum
bulk decoupling capacitor, and one 1礔 and one 0.01礔
ceramic capacitor for high-frequency bypass. A suggested
ferrite bead for such use is Fair-Rite Products Corporation
part number 2743019447 (this is a surface-mountable
part). Similar parts from other vendors or a 0.27礖 air-
core coil can also be used.
Noisy V
IN
To MIC2593
SMT Ferrite Bead
Fair-Rite Products
Type 2743019447
47礔
Tanalum
1礔
Ceramic
10nF
Ceramic
Figure 14. Filter Circuit for Noisy Supplies
(+3.3V and/or 12V)
It is theoretically possible that high-amplitude, HF noise
reflected back into one or both of the MIC2593s 12V
outputs could interfere with proper device operation,
although such noisy loads are unlikely to occur in the real
world. If this becomes an application-specific concern, a
pair of filters similar to that in Figure 14 will provide the
required HF bypassing. The capacitors would be
connected to the MIC2593s 12V output pins, and the
ferrite beads would be placed between the 12V output
pins and the loads.
MOSFET Vendors
Key MOSFET Type(s)
Web Address
Vishay (Siliconix)
Si4430DY ( LittleFoot
?/DIV>
Series)
Si4420DY ( LittleFoot
?/DIV>
Series)
www.siliconix.com
International Rectifier
IRF7413A (SO-8 package part)
Si4420DY (second source to Vishay)
www.irf.com
Fairchild Semiconductor
FDS6644 (SO-8 package part)
FDS6670A (SO-8 package part)
FDS6688 (SO-8 package part)
www.fairchildsemi.com
Resistor Vendors
Sense Resistors
Web Address
Vishay (Dale)
WSL Series
WSL 3637 Series
www.vishay.com/docs/wsl_30100.pdf
IRC
OARS Series
LR Series
(second source to WSL)
irctt.com/pdf_files/OARS.pdf
irctt.com/pdf_files/LRC.pdf
相關(guān)PDF資料 |
PDF描述 |
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| MIC2594-2BM TR | IC CTRLR HOT SWAP NEG HV 8-SOIC |
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| MIC280-7BM6 TR | IC SUPERVISOR THERMAL SOT23-6 |
| MIC2800-GFSYML TR | IC REG TRPL BUCK/LINEAR 16MLF |
| MIC281-7BM6 TR | IC SUPERVISOR THERMAL SOT23-6 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MIC2593-2YTQ | 功能描述:熱插拔功率分布 Dual-slot PCI Hot Swap Power Controller w/o IPMI support - 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 |
| MIC2593-2YTQ TR | 功能描述:熱插拔功率分布 Dual-slot PCI Hot Swap Power Controller w/o IPMI support - 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 |
| MIC2594-1BM | 功能描述:IC CTRLR HOT SWAP NEG HV 8-SOIC 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 |
| MIC2594-1BM TR | 功能描述:IC CTRLR HOT SWAP NEG HV 8-SOIC 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 |
| MIC2594-1YM | 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 |
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