參數(shù)資料
型號： TPS40100RGER
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： 2 A SWITCHING CONTROLLER, 600 kHz SWITCHING FREQ-MAX, PQCC24
封裝： GREEN, PLASTIC, QFN-24
文件頁數(shù)： 38/39頁
文件大小： 762K
代理商： TPS40100RGER
www.ti.com
APPLICATION INFORMATION
Introduction
Programming Operating Frequency
RT + *
3.98
104
fSW
2
) 5.14
104
fSW
* 8.6 (kW)
(1)
TPS40100
SLUS601–MAY 2005
The TPS40100 is a synchronous buck controller targeted at applications that require sequencing and output
voltage margining features. This controller uses a current feedback mechanism to make loop compensation
easier for loads that can have wide capacitance variations. Current sensing (for both current feedback and
overcurrent) is true differential and can be done using the inductor DC resistance (with a R-C filter) or with a
separate sense resistor in series with the inductor. The overcurrent level is programmable independently from
the amount of current feedback providing greater application flexibility. Likewise, the overcurrent function has
user programmable integration to eliminate nuisance tripping and allow the user to tailor the response to
application requirements. The controller provides an integrated method to margin the output voltage to ± 3% and
± 5% of its nominal value by simply grounding one of two pins directly or through a resistance. Powergood and
clock synchronization functions are provided on dedicated pins. Users can program operating frequency and the
closed loop soft-start time by means of a resistor and capacitor to ground respectively. Output se-
quencing/tracking can be accomplished in one of three ways: sequential (one output comes up, then a second
comes up), ratiometric (one or more outputs reach regulation at the same time – the voltages all follow a
constant ration while starting) and simultaneous (one or more outputs track together on startup and reach
regulation in order from lowest to highest).
Operating frequency is set by connecting a resistor to GND from the RT pin. The relationship is:
where
fSW is the switching frequency in kHz
RT is in k
Figure 1 and Figure 2 show the relationship between the switching frequency and the RT resistor as described in
Equation 1. The scaling is different between them to allow the user a more accurate views at both high and low
frequency.
8
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS40100RGERG4 功能描述:DC/DC 開關(guān)控制器 Wide In Range Sync Buck for Sequencing RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(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
TPS40100RGET 功能描述:DC/DC 開關(guān)控制器 Wide In Range Sync Buck for Sequencing RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(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
TPS40100RGETG4 功能描述:DC/DC 開關(guān)控制器 Wide In Range Sync Buck for Sequencing RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(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
TPS40101 制造商:TI 制造商全稱:Texas Instruments 功能描述:MIDRANGE INPUT SYNCHRONOUS BUCK CONTROLLER WITH ADVANCED SEQUENCING AND OUTPUT MARGINING
TPS40101RGER 功能描述:DC/DC 開關(guān)控制器 Mid Range Input Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(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
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