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參數(shù)資料
| 型號(hào)： | FAN5236QSCX |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Dual Mobile-Friendly DDR / Dual-output PWM Controller |
| 中文描述： | DUAL SWITCHING CONTROLLER, 345 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封裝： | QSOP-28 |
| 文件頁(yè)數(shù)： | 17/20頁(yè) |
| 文件大小： | 199K |
| 代理商： | FAN5236QSCX |
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FAN5236
PRODUCT SPECIFICATION
REV. 1.1.7 4/4/03
17
Layout Considerations
Switching converters, even during normal operation,
produce short pulses of current which could cause substan-
tial ringing and be a source of EMI if layout constrains are
not observed.
There are two sets of critical components in a DC-DC
converter. The switching power components process large
amounts of energy at high rate and are noise generators. The
low power components responsible for bias and feedback
functions are sensitive to noise.
A multi-layer printed circuit board is recommended. Dedi-
cate one solid layer for a ground plane. Dedicate another
solid layer as a power plane and break this plane into smaller
islands of common voltage levels.
Notice all the nodes that are subjected to high dV/dt voltage
swing such as SW, HDRV and LDRV, for example. All
surrounding circuitry will tend to couple the signals from
these nodes through stray capacitance. Do not oversize
copper traces connected to these nodes. Do not place traces
connected to the feedback components adjacent to these
traces. It is not recommended to use High Density Intercon-
nect Systems, or micro-vias on these signals. The use of
blind or buried vias should be limited to the low current
signals only. The use of normal thermal vias is left to the
discretion of the designer.
Keep the wiring traces from the IC to the MOSFET gate and
source as short as possible and capable of handling peak
currents of 2A. Minimize the area within the gate-source
path to reduce stray inductance and eliminate parasitic ring-
ing at the gate.
Locate small critical components like the soft-start capacitor
and current sense resistors as close as possible to the respec-
tive pins of the IC.
The FAN5236 utilizes advanced packaging technologies
with lead pitches of 0.6mm. High performance analog semi-
conductors utilizing narrow lead spacing may require special
considerations in PWB design and manufacturing. It is
critical to maintain proper cleanliness of the area surround-
ing these devices. It is not recommended to use any type of
rosin or acid core solder, or the use of flux in either the
manufacturing or touch up process as these may contribute
to corrosion or enable electromigration and/or eddy currents
near the sensitive low current signals. When chemicals such
as these are used on or near the PWB, it is suggested that the
entire PWB be cleaned and dried completely before applying
power.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| FAN5236 | Dual Mobile-Friendly DDR / Dual-output PWM Controller |
| FAN5240 | Multi-Phase PWM Controller for AMD Mobile Athlon TM and Duron TM |
| FAN5240MTC | Multi-Phase PWM Controller for AMD Mobile Athlon TM and Duron TM |
| FAN5240MTCX | Multi-Phase PWM Controller for AMD Mobile Athlon TM and Duron TM |
| FAN5240QSC | Multi-Phase PWM Controller for AMD Mobile Athlon TM and Duron TM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FAN5240 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Multi-Phase PWM Controller for AMD Mobile Athlon TM and Duron TM |
| FAN5240_06 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Multi-Phase PWM Controller for AMD Mobile Athlon and Duron |
| FAN5240_ADC3116B WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| FAN5240MTC | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 DC/DC 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 |
| FAN5240MTC_Q | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 DC/DC 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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