- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄231084 > TPS40055PWP (TEXAS INSTRUMENTS INC) SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 PDF資料下載
參數(shù)資料
| 型號： | TPS40055PWP |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | GREEN, PLASTIC, HTSSOP-16 |
| 文件頁數(shù)： | 18/35頁 |
| 文件大小： | 866K |
| 代理商： | TPS40055PWP |
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頁當前第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
A
MOD(f) + AMOD
f
LC
f
C
2
+ 5
4.93 kHz
20 kHz
2
+ 0.304
(71)
G +
1
A
MOD(f)
+
1
0.304 +
3.29
(72)
f
Z2 +
1
2p
R1
C3 N
C3 +
1
2p
100 kW
4.93 kHz +
323 pF, choose 330 pF
(73)
f
P2 +
1
2p
R3
C3 N
R3 +
1
2p
330 pF
73.3 kHz +
6.55 kW, choose 6.49 kW
(74)
f
C +
1
2p
R1
C2
G N
C2 +
1
2p
100 kW
3.29
20 kHz +
24.2 pF, choose 22 pF
(75)
f
P1 +
1
2p
R2
C2 N
R2 +
1
2p
22 pF
73.3 kHz +
98.2 kW, choose 97.6 kW
(76)
f
Z1 +
1
2p
R2
C1 N
C1 +
1
2p
97.6 kW
4.93 kHz +
331 pF, choose 330 pF
(77)
R
BIAS +
0.7 V
R1
V
O * 0.7 V
+
0.7 V
100kW
3.3 V * 0.7 V
+ 26.9 kW, choose 26.7 kW
(78)
CALCULATING THE BOOST AND BP10V BYPASS CAPACITANCE
C
BOOST +
Qg
DV
+
18 nC
0.5 V +
36 nF
(79)
C
BP(10 V) +
Q
gHS ) QgSR
DV
+
2
Qg
DV
+
36 nC
0.5 V +
72 nF
(80)
DESIGN EXAMPLE SUMMARY
www.ti.com ...................................................................................................................................... SLUS593F – DECEMBER 2003 – REVISED SEPTEMBER 2008
Select the double pole location for the Type III compensation network at the output capacitor ESR zero at
73.7 kHz.
The amplifier gain at the crossover frequency of 20 kHz is determined by the reciprocal of the modulator gain
AMOD at the crossover frequency from Equation 26:
And also from Equation 26:
Choose R1 = 100 k
The poles and zeros for a type III network are described in Equation 24 and Equation 25.
The size of the bypass capacitor depends on the total gate charge of the MOSFET being used and the amount
of droop allowed on the bypass capacitor. The BOOST capacitance for the Si7860DP, allowing for a 0.5 voltage
droop on the BOOST pin from Equation 28 is:
and the BP10V capacitance from Equation 29 is
For this application, a 0.1-F capacitor is used for the BOOST bypass capacitor and a 1.0-F capacitor is used
for the BP10V bypass.
Figure 15 shows component selection for the 10-V to 24-V to 3.3-V at 8 A dc-to-dc converter specified in the
design example. For an 8-V input application, it may be necessary to add a Schottky diode from BP10 to BOOST
to get sufficient gate drive for the upper MOSFET. As seen in Figure 7, the BP10 output is about 6 V with the
input at 8 V so the upper MOSFET gate drive may be less than 5 V.
A schottky diode is shown connected across the synchronous rectifier MOSFET as an optional device that may
be required if the layout causes excessive negative SW node voltage, greater than or equal to 2 V.
TPS40054-Q1, TPS40055-Q1 and TPS40057-Q1 automotive qualified versions TPS40055-EP Enhanced product
4.5 to 18V controller with power good TPS40195 4.5 to 18V controller with synchronization power good
TPS40200 Wide input non-synchronous DC-DC controller
Copyright 2003–2008, Texas Instruments Incorporated
25
Product Folder Link(s): TPS40054 TPS40055 TPS40057
相關PDF資料 |
PDF描述 |
|---|---|
| TPS3824-30DBVRG4 | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO5 |
| TPS2300IPWG4 | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO20 |
| TC151A2013EOA723 | 0.25 A SWITCHING REGULATOR, 50 kHz SWITCHING FREQ-MAX, PDSO8 |
| TC151A6022EOA713 | 0.25 A SWITCHING REGULATOR, 50 kHz SWITCHING FREQ-MAX, PDSO8 |
| TC151A1526EOA713 | 0.25 A SWITCHING REGULATOR, 50 kHz SWITCHING FREQ-MAX, PDSO8 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TPS40055PWPG4 | 功能描述:DC/DC 開關控制器 Wide Input Sync Buck Cntrlr source/sink RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 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 安裝風格: 封裝 / 箱體:CPAK |
| TPS40055PWPR | 功能描述:DC/DC 開關控制器 Wide Input Sync Buck Cntrlr source/sink RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 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 安裝風格: 封裝 / 箱體:CPAK |
| TPS40055PWPRG4 | 功能描述:DC/DC 開關控制器 Wide Input Sync Buck Cntrlr source/sink RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 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 安裝風格: 封裝 / 箱體:CPAK |
| TPS40056 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:WIDE-INPUT SYNCHRONOUS, TRACKING BUCK CONTROLLER |
| TPS40056PWP | 功能描述:DC/DC 開關控制器 Wide Vin Synch Buck DC/DC Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 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 安裝風格: 封裝 / 箱體:CPAK |
發(fā)布緊急采購，3分鐘左右您將得到回復。