- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98281 > TPS40074RHL (TEXAS INSTRUMENTS INC) 2 A SWITCHING CONTROLLER, 550 kHz SWITCHING FREQ-MAX, PQCC20 PDF資料下載
參數(shù)資料
| 型號(hào)： | TPS40074RHL |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 2 A SWITCHING CONTROLLER, 550 kHz SWITCHING FREQ-MAX, PQCC20 |
| 封裝： | PLASTIC, QFN-20 |
| 文件頁數(shù)： | 24/37頁 |
| 文件大?。?/td> | 448K |
| 代理商： | TPS40074RHL |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第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頁當(dāng)前第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
www.ti.com
40
60
50
0
30
20
10
40
20
30
10
100
100 k
10 k
1 k
1 M
PWM and LC Response
ESR = 0
Frequency Hz
Gain
dB
Overall System
Response
ESR = 0
fCO2
fCO1
Compensation
Response
Overall System
Response
ESR = 0.0095
GBWP
PWM and LC Response
ESR = 0.0095
TPS40074
SLUS617–APRIL 2005
Figure 18. Overall System Bode Plot
Using these values and the equations above the resistors and capacitors around the compensation network can
be calculated.
1. Set RZ1 =10k.
2. Calculate RSET using Equation 49;RSET = 8750 . Two resistors in parallel, RSET1 and RSET2, are used to
make up RSET.RSET1 =9.53k,RSET2 = 105 k.
3. Using Equation 54 and fZ1 = 3559 Hz, CPZ1 can be calculated to be 4.47 nF; CPZ1=4.7 nF.
4. FP1 and Equation 52 yields RP1 to be 677 ,RP1 = 680 .
5. The required gain of 17.6 dB (7.586) and Equation 52 sets the value for RPZ1. Note actual gain used for this
calculation was 20 dB (10), this ensures that the gain of the transfer function is high enough, RPZ1 =6.2 k.
6. CZ2 is calculated using Equation 55 and the desired frequency for the second zero, CZ2 =6.8 nF.
7. CP2 is calculated using the second pole frequency and Equation 53,CP2 = 150 pF.
Using MathCAD the above values were used to draw the actual Bode plot for gain and phase. From these plots
the crossover frequency, phase margin and gain margin can be recorded.
Table 3. Equivalent Series Resistance
ESR
CROSSOVER FREQUENCY
PHASE MARGIN
GAIN MARGIN
()
(kHz)
(°)
(dB)
0
23.1
72
> 46
0.0095
98.6
78.8
> 33
30
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TPS40075RHLR | 2 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PQCC20 |
| TPS40075RHLTG4 | 2 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PQCC20 |
| TPS40077PWPR | 2 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 |
| TPS40077PWPRG4 | 2 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 |
| TPS40077PWPG4 | 2 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS40074RHLR | 功能描述:DC/DC 開關(guān)控制器 Mid Input Sync Buck w/Vltg Feed-Fwd 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 |
| TPS40074RHLRG4 | 功能描述:DC/DC 開關(guān)控制器 Mid Input Sync Buck w/Vltg Feed-Fwd 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 |
| TPS40074RHLT | 功能描述:DC/DC 開關(guān)控制器 Mid Input Sync Buck w/Vltg Feed-Fwd 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 |
| TPS40074RHLTG4 | 功能描述:DC/DC 開關(guān)控制器 Mid Input Sync Buck w/Vltg Feed-Fwd 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 |
| TPS40075 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:4.5V TO 18V INPUT 10 PIN SYNCHRONOUS BUCK CONTROLLER WITH POWER GOOD |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。