- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄68419 > TPS62650YFFT (TEXAS INSTRUMENTS INC) 1.7 A SWITCHING REGULATOR, 6600 kHz SWITCHING FREQ-MAX, BGA9 PDF資料下載
參數(shù)資料
| 型號： | TPS62650YFFT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1.7 A SWITCHING REGULATOR, 6600 kHz SWITCHING FREQ-MAX, BGA9 |
| 封裝： | GREEN, DSBGA-9 |
| 文件頁數(shù)： | 24/38頁 |
| 文件大?。?/td> | 820K |
| 代理商： | TPS62650YFFT |
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頁第38頁
O
I
O
L
L(MAX)
O(MAX)
I
V
V - V
I
I =
x
I
= I
+
V
L x
2
sw
f
D
SLVS808A
– AUGUST 2009 – REVISED FEBRUARY 2011
APPLICATION INFORMATION
INDUCTOR SELECTION
The TPS6265x series of step-down converters have been optimized to operate with an effective inductance
value in the range of 0.3
μH to 1.3μH and with output capacitors in the range of 4.7μF to 10μF. The internal
compensation is optimized to operate with an output filter of L = 0.47
μH and CO = 4.7μF. Larger or smaller
inductor values can be used to optimize the performance of the device for specific operation conditions. For more
details, refer to the section "checking loop stability".
The inductor value affects its peak-to-peak ripple current, the PWM-to-PFM transition point, the output voltage
ripple and the efficiency. The selected inductor has to be rated for its dc resistance and saturation current. The
inductor ripple current (
ΔIL) decreases with higher inductance and increases with higher VI or VO.
with: fSW = switching frequency (6 MHz typical)
L = inductor value
ΔIL = peak-to-peak inductor ripple current
IL(MAX) = maximum inductor current
(1)
In high-frequency converter applications, the efficiency is essentially affected by the inductor AC resistance (i.e.
quality factor) and to a smaller extent by the inductor DCR value. To achieve high efficiency operation, care
should be taken in selecting inductors featuring a quality factor above 25 at the switching frequency. Increasing
the inductor value produces lower RMS currents, but degrades transient response. For a given physical inductor
size, increased inductance usually results in an inductor with lower saturation current.
The total losses of the coil consist of both the losses in the DC resistance (R(DC)) and the following
frequency-dependent components:
The losses in the core material (magnetic hysteresis loss, especially at high switching frequencies)
Additional losses in the conductor from the skin effect (current displacement at high frequencies)
Magnetic field losses of the neighboring windings (proximity effect)
Radiation losses
The following inductor series from different suppliers have been used with the TPS6265x converters.
Table 3. List of Inductors
MANUFACTURER
SERIES
DIMENSIONS
LQM21PN1R0NGR
2.0 x 1.2 x 1.0 max. height
LQM21PNR54MG0
2.0 x 1.2 x 1.0 max. height
MURATA
LQM21PNR47MG0
2.0 x 1.2 x 1.0 max. height
LQM2MPN1R0NG0
2.0 x 1.6 x 1.0 max. height
TOKO
MDT2012-CX1R0A
2.0 x 1.2 x 1.0 max. height
FDK
MIPS2012D1R0-X2
2.0 x 1.2 x 1.0 max. height
30
2009–2011, Texas Instruments Incorporated
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TPS62651YFFT | 1.7 A SWITCHING REGULATOR, 6600 kHz SWITCHING FREQ-MAX, BGA9 |
| TPS62651YFF | 1.7 A SWITCHING REGULATOR, 6600 kHz SWITCHING FREQ-MAX, BGA9 |
| TPS62651YFFR | 1.7 A SWITCHING REGULATOR, 6600 kHz SWITCHING FREQ-MAX, BGA9 |
| TPS62650YFFR | 1.7 A SWITCHING REGULATOR, 6600 kHz SWITCHING FREQ-MAX, BGA9 |
| TPS62650YFF | 1.7 A SWITCHING REGULATOR, 6600 kHz SWITCHING FREQ-MAX, BGA9 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS62651YFFR | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 800mA,6MHz High Eff Step-Down Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
| TPS62651YFFT | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 800mA,6MHz High Eff Step-Down Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
| TPS62660EVM-419 | 功能描述:電源管理IC開發(fā)工具 TPS62660 Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)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 |
| TPS62660YFFR | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 1000mA,6MHz Synch Step-Down Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
| TPS62660YFFT | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 1000mA,6MHz Synch Step-Down Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。