- 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： | 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)： | 22/37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頁當(dāng)前第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
www.ti.com
100
100 k
10 k
1 k
1 M
10
20
10
20
30
40
0
Frequency Hz
Gain
dB
High Frequency Gain
fZ1
fZ2
fP2
fP1
VO + VFB
RZ1 ) RSET
RSET
(49)
RSET +
RSET1 RSET2
RSET1 ) RSET2
(50)
GAIN +
RPZ2
RZ1 RP1
RZ1)RP1
(51)
fP1 +
1
2p
RP1 CPZ1
(52)
fP2 +
CP2 ) CZ2
2p
RPZ2 CP2 CZ2
^
1
2p
RPZ2 CP2
(53)
fZ1 +
1
2p
RZ1 CPZ1
(54)
fZ2 +
1
2p
RPZ2 ) RP1
CZ2
^
1
2p
RPZ2 CZ2
(55)
TPS40074
SLUS617–APRIL 2005
Figure 17. Type III Compensation Bode Plot
The high frequency gain and the break (pole and zero) frequencies are calculated using the following equations.
Using this PWM and L-C bode plot the following actions ensure stability.
1. Place two zero’s close to the double pole, i.e. fZ1 =fZ2 = 3559 Hz
2. Place a pole at one octave below the desired crossover frequency. The crossover frequency was selected as
one quarter the switching frequency, fCO = 100 kHz, fP1 =50kHz
3. Place the second pole about an octave above fco. This ensures that the overall system gain falls off quickly to
give good gain margin, fP2 = 200 kHz
4. The high-frequency gain is sufficient to ensure 0 dB at the required crossover frequency, GAIN = -1 × GAIN
of PWM and LC at the crossover frequency, GAIN = 17.6 dB, or 7.586
Desired frequency response and resultant overall system response can be seen in Figure 18.
29
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，3分鐘左右您將得到回復(fù)。