- 您現在的位置：買賣IC網 > PDF目錄98281 > TPS40211DRCTG4 (TEXAS INSTRUMENTS INC) SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO10 PDF資料下載
參數資料
| 型號： | TPS40211DRCTG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封裝： | GREEN, PLASTIC, SON-10 |
| 文件頁數： | 9/47頁 |
| 文件大小： | 1375K |
| 代理商： | TPS40211DRCTG4 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁當前第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頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁
V
SSE(1)
V
SS
V
OUT
V
SSE
V
SS(ofst)
t
0
t
1
V
SS(ofst)+700 mV
V
IN - VD
t
2
t
3
2
5
4
SS
COMP
FB
TPS40210/11
R
SS(chg)
UDG-07121
+
R
SS(dchg)
700 mV REF
OC Fault
UVLO
DIS
Error Amplifier
(
)
SS
BP
SS(ofst)
SS
BP
SS(ofst)
FB
t
C
V
R
ln
V
=
-
÷
÷
-
+
è
www.ti.com
SLUS772D – MARCH 2008 – REVISED APRIL 2010
volts. It cannot do this due to the converter architecture. The output voltage starts from the input voltage less the
drop across the diode (VIN - VD) and rises from there. The point at which the output voltage starts to rise (t2) is
the point where the VSSE ramp passes the point where it is commanding more output voltage than (VIN - VD). This
voltage level is labeled VSSE(1). The time required for the output voltage to ramp from a theoretical zero to the
final regulated value (from t1 to t3) is determined by the time it takes for the capacitor connected to the SS pin
(CSS) to rise through a 700 mV range, beginning at VSS(ofst) above GND.
Figure 24. SS Pin Voltage and Output Voltage
Figure 25. SS Pin Functional Circuit
The required capacitance for a given soft start time t3 – t1 in Figure 24 is calculated in Equation 13.
(13)
Where:
tSS is the soft-start time, in seconds
RSS(chg) is the SS charging resistance in , typically 500 k
CSS is the value of the capacitor on the SS pin, in F
VBP is the value of the voltage on the BP pin, in V
VSS(ofst) is the approximate level shift from the SS pin to the error amplifier (~700 mV)
VFB is the error amplifier reference voltage, 700mV typical
Note that tSS is the time it takes for the output voltage to rise from 0 V to the final output voltage. Also note the
tolerance on RSS(chg) given in the electrical specifications table. This contributes to some variability in the output
voltage rise time and margin must be applied to account for it in design.
Copyright 2008–2010, Texas Instruments Incorporated
17
相關PDF資料 |
PDF描述 |
|---|---|
| TPS40210DGQG4 | SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO10 |
| TPS40304ADRCT | SWITCHING CONTROLLER, PQCC10 |
| TPS40304ADRCR | SWITCHING CONTROLLER, PQCC10 |
| TPS5100IPWRG4 | SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 |
| TPS5100PWLE | SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS40211EVM-352 | 功能描述:電源管理IC開發工具 TPS40211EVM-352 Eval Mod RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| TPS40211EVM-352 | 制造商:Texas Instruments 功能描述:EVAL BOARD, TPS40211 ADJ 700mA NON SYS B |
| TPS40211QDGQRQ1 | 功能描述:LED照明驅動器 WIDE INP CRNT MODE BOOST CONTROLLER RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
| TPS40-22 | 制造商:TOTAL-POWER 制造商全稱:TOTAL-POWER 功能描述:40 WATT OPEN - FRAME SWITCHING POWER SUPPLY |
| TPS40222 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:1.6-A, 1.25-MHz BUCK CONVERTER IN A 3 mm 3 mm SON PACKAGE |
發布緊急采購，3分鐘左右您將得到回復。