- 您現在的位置：買賣IC網 > PDF目錄98285 > TPS62691YFFT (TEXAS INSTRUMENTS INC) 0.6 A SWITCHING REGULATOR, 4400 kHz SWITCHING FREQ-MAX, BGA6 PDF資料下載
參數資料
| 型號： | TPS62691YFFT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | 0.6 A SWITCHING REGULATOR, 4400 kHz SWITCHING FREQ-MAX, BGA6 |
| 封裝： | DSBGA-6 |
| 文件頁數： | 11/27頁 |
| 文件大小： | 870K |
| 代理商： | TPS62691YFFT |
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
DIL +
V
O
V
I
V
I *
V
O
L
sw
DIL(MAX) + IO(MAX) )
DIL
2
SLVS965
– MARCH 2011
APPLICATION INFORMATION
INDUCTOR SELECTION
The TPS6269x series of step-down converters have been optimized to operate with an effective inductance
value in the range of 0.5
μH to 1.8μH 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 = 1
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,
see the CHECKING LOOP STABILITY section.
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 (4 MHz typical)
L = inductor value
ΔIL = peak-to-peak inductor ripple current
IL(MAX) = maximum inductor current
(2)
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 (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 TPS6269x converters.
Table 1. List of Inductors
MANUFACTURER
SERIES
DIMENSIONS (in mm)
LQM21PN1R0NGC
2.0 x 1.2 x 1.0 max. height
MURATA
LQM21PN1R5MC0
2.0 x 1.2 x 0.55 max. height
FDK
MIPS2012D1R0-X2
2.0 x 1.2 x 1.0 max. height
TAIYO YUDEN
NM2012N1R0M
2.0 x 1.2 x 1.0 max. height
TOKO
MDT2012-CH1R0A
2.0 x 1.2 x 1.0 max. height
2011, Texas Instruments Incorporated
19
相關PDF資料 |
PDF描述 |
|---|---|
| TPS62751DSKR | 1.8 A SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, PDSO10 |
| TPS63000IDRCRQ1 | 2.1 A SWITCHING REGULATOR, 1500 kHz SWITCHING FREQ-MAX, PDSO10 |
| TPS65011RGZT | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC48 |
| TPS65023QRHARQ1 | POWER SUPPLY SUPPORT CKT, PQCC40 |
| TPS65040ZQER | 8-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA71 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS62692EVM-076 | 制造商:Texas Instruments 功能描述:TPS62692EVM-076 EVALUATION MODULE |
| TPS62692YFDR | 制造商:Texas Instruments 功能描述: |
| TPS62693YFDR | 功能描述:直流/直流開關轉換器 800-mA 3-MHz Hi-Eff SD Cnvtr RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| TPS62693YFDT | 功能描述:直流/直流開關轉換器 800-mA 3-MHz Hi-Eff SD Cnvtr RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| TPS62698YFDR | 功能描述:直流/直流開關轉換器 800mA 3MHz Hi-Eff SD Cnvtr RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
發布緊急采購，3分鐘左右您將得到回復。