- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98281 > TPS40077PWPR (TEXAS INSTRUMENTS INC) 2 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 PDF資料下載
參數(shù)資料
| 型號(hào)： | TPS40077PWPR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 2 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | GREEN, PLASTIC, HTSSOP-16 |
| 文件頁數(shù)： | 11/43頁 |
| 文件大?。?/td> | 847K |
| 代理商： | TPS40077PWPR |
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頁當(dāng)前第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頁第40頁第41頁第42頁第43頁
VDG03174
tBLANKING
7 Current-Limit Trips
(HDRV Cycle Terminated by Current-Limit Trip)
7
Soft-Start
Cycles
HDRV
Clock
VILIM
VVIN VSW
SS
LOOP COMPENSATION
SHUTDOWN AND SEQUENCING
www.ti.com ..................................................................................................................................................... SLUS714D – JANUARY 2007 – REVISED APRIL 2009
Figure 25. Typical Fault Protection Waveforms
Voltage-mode, buck-type converters are typically compensated using Type III networks. Because the TPS40077
uses voltage feed-forward control, the gain of the voltage feed-forward circuit must be included in the PWM gain.
The gain of the voltage feed-forward circuit, combined with the PWM circuit and power stage for the TPS40077
is:
KPWM VUVLO(on)
The remainder of the loop compensation is performed as in a normal buck converter. Note that the voltage
feed-forward circuitry removes the input voltage term from the expression for PWM gain. PWM gain is strictly a
function of the programmed startup voltage.
The TPS40077 can be shut down by pulling the SS pin below 250 mV. In this state, both of the output drivers are
in the low-output state, turning off both of the power FETs. This places the output of the converter in a
high-impedance state. When shutting down the converter, a crisp pulldown of the SS pin is preferred to a slow
pulldown. A slow pulldown could allow the output to be pulled low, possibly sinking current from the load. As a
general rule of thumb, the fall time of SS when shutting down the converter should be no more than 1/10th of the
control loop crossover frequency. An example of a shutdown interface is shown in Figure 26.
Copyright 2007–2009, Texas Instruments Incorporated
19
Product Folder Link(s) :TPS40077
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TPS40077PWPRG4 | 2 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 |
| TPS40077PWPG4 | 2 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 |
| TPS40090QPWRQ1 | SWITCHING CONTROLLER, 1200 kHz SWITCHING FREQ-MAX, PDSO24 |
| TPS40101RGET | 1.3 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PQCC24 |
| TPS40131RHBT | SWITCHING CONTROLLER, 1200 kHz SWITCHING FREQ-MAX, PQCC32 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS40077PWPRG4 | 功能描述:DC/DC 開關(guān)控制器 Hi Eff Mid-Range Inp 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 |
| TPS40090 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:HIGH FREQUENCY MULTIPHASE CONTROLLER |
| TPS40090EVM-001 | 功能描述:電源管理IC開發(fā)工具 TPS40090-001 Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| TPS40090EVM-002 | 功能描述:電源管理IC開發(fā)工具 TPS40090-002 Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| TPS40090PW | 功能描述:DC/DC 開關(guān)控制器 4 Ch Multiphase Buck DC/DC Controller 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。