參數(shù)資料
型號(hào)： SP6120BCY
英文描述： Low Voltage, AnyFETTM, Synchronous ,Buck Controller Ideal for 2A to 10A, High Performance, DC-DC Power Converters
中文描述： 低電壓，AnyFETTM，同步，降壓控制器適合2A至10A條，高性能，DC - DC電源轉(zhuǎn)換器
文件頁(yè)數(shù)： 12/22頁(yè)
文件大?。?/td> 304K
代理商： SP6120BCY
12
Date: 5/25/04
SP6120B Low Voltage, AnyFET
TM
, Synchronous, Buck Controller Copyright 2004 Sipex Corporation
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The NFET/PFET programmability is for the
high side MOSFET. When designing DC/DC
converters, it is not always obvious when to use
an NFET with a charge pump or a simple PFET
for the high side MOSFET. Often, the controller
has to be changed, making performance evalua-
tions difficult. This difficulty is worsened by the
limited availability of true low voltage control-
lers. In addition, by also programming the mode,
continuous or discontinuous, switch mode power
designs that are successful in bus applications
can now find homes in portable applications.
Secondary Loop (3% Window Comparator)
DSP, microcontroller and microprocessor appli-
cations have very strict supply voltage require-
ments. In addition, the current requirements to
these devices can change drastically. Linear
regulators, typically the workhorse for DC/DC
step-down, do a great job managing accuracy
and transient response at the expense of effi-
ciency. On the other hand, PWM switching
regulators typically do a great job managing
efficiency at the expense of output ripple and
line/load step response. The trick in PWM
controller design is to emulate the transient re-
sponse of the linear regulator.
Of course improving transient response should
be transparent to the power supply designer.
Very often this is not the case. Usually the very
circuitry that improves the controllers transient
response adversely interferes with the main PWM
loop or complicates the board level design of the
power converter.
The SP6120B handles line/load transient re-
sponse in a new way. First, a window compara-
Program Logic: continued
tor detects whether the output voltage is above
or below the regulated value by 3%. Then, a
proprietary “Ripple & Frequency Independent”
algorithm synchronizes the output of the win-
dow comparator with the peak and valley of the
inductor current waveform. 3% low detection is
synchronized with inductor current peak; 3%
high detection is synchronized with the inductor
current valley. However, in order to eliminate
any additional loops, the current peak and valley
are determined by the edges associated with the
on-time in the main loop. The set pulse corre-
sponding to the start of an on-time indicates a
相關(guān)PDF資料
PDF描述
SP6120BEY Low Voltage, AnyFETTM, Synchronous ,Buck Controller Ideal for 2A to 10A, High Performance, DC-DC Power Converters
SP6120CY Low Voltage, AnyFETTM, Synchronous ,Buck Controller Ideal for 2A to 10A, High Performance, DC-DC Power Converters
SP6120HVEY High Voltage, Synchronous ,Buck Controller Ideal for 2A to 20A, High Performance, DC-DC Power Converters
SP6120HVCY CAPACITOR, F/TERM 6800PF 50V X8R 0805CAPACITOR, F/TERM 6800PF 50V X8R 0805; CAPACITANCE:6.8NF; VOLTAGE RATING, DC:50V; CAPACITOR DIELECTRIC TYPE:CERAMIC MULTI-LAYER; SERIES:08055F; TOLERANCE, :10%; TOLERANCE, -:10%; TEMP, OP. RoHS Compliant: Yes
SP6120EY Low Voltage, AnyFETTM, Synchronous,Buck Controller Ideal for 2A to 10A, High Performance, DC-DC Power Converters
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SP6120BCY/TR 制造商:SIPEX 制造商全稱(chēng):Sipex Corporation 功能描述:Low Voltage, AnyFETTM, Synchronous ,Buck Controller Ideal for 2A to 10A, High Performance, DC-DC Power Converters
SP6120BCY-L 功能描述:DC/DC 開(kāi)關(guān)控制器 Low Voltage, AnyFET Synchronous, Cntrllr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
SP6120BCY-L/TR 功能描述:DC/DC 開(kāi)關(guān)控制器 Low Voltage, AnyFET Synchronous, Cntrllr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
SP6120BEY 制造商:SIPEX 制造商全稱(chēng):Sipex Corporation 功能描述:Low Voltage, AnyFETTM, Synchronous ,Buck Controller Ideal for 2A to 10A, High Performance, DC-DC Power Converters
SP6120BEY/TR 制造商:SIPEX 制造商全稱(chēng):Sipex Corporation 功能描述:Low Voltage, AnyFETTM, Synchronous ,Buck Controller Ideal for 2A to 10A, High Performance, DC-DC Power Converters
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