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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)： | 8/39頁 |
| 文件大?。?/td> | 762K |
| 代理商： | TPS40100RGER |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁當(dāng)前第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁
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Y(s) +
1 * KFILT(s)
L
RLDC
s ) 1
(dimensionless)
(27)
KCS + gmCSA 20 kW (dimensionless)
(28)
+
L
ISNS
+
X2
+
FB
COMP
690 mV
1 V AC
gmCSA
COUT
CFLT
R2
RLOAD
R1
RBIAS
UDG04149
RESR
C2
C1
RFLT
RLDC
VIN
VO
REA
20 k
VOUT
VX
Compensating the Loop (Type II)
fC v
fSW
5
(Hz)
(29)
TPS40100
SLUS601–MAY 2005
APPLICATION INFORMATION (continued)
KCS is the gain of the current sense amplifier in the current feedback loop:
where (for Equation 24 through Equation 28)
VIN is the input voltage (V)
KPWM is the gain of the pulse width modulator and is equal to 2
RLOAD is the equivalent load resistance ()
RLDC is the DC inductor resistance ()
L is the output filter inductance (H)
COUT is the output filter capacitance (F)
RESR is the equivalent series resistance of the output filter capacitor ()
gmCSA is the gain of the current sense amplifier (S)
20 k is the impedance the current sense amplifier works against (from block diagram)
A computer aided math tool is highly recommended for use in evaluating these equations.
Figure 6. Averaged Model for a Converter Based on the TPS40100
The first step is to select a target loop crossover frequency. Choosing the crossover frequency too high
contributes to making the converter pulse skip. A balance of crossover frequency and amount of current
feedback must be maintained to avoid pulse skipping. A suggested maximum loop crossover frequency is one
fifth-of the switching frequency.
where
fC is the loop crossover frequency
fSW is the switching frequency
16
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|---|---|
| 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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