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| 型號(hào)： | TPS62410DRCTG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類(lèi)： | 穩(wěn)壓器 |
| 英文描述： | 1.6 A DUAL SWITCHING CONTROLLER, 2500 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封裝： | 3 X 3 MM, GREEN, PLASTIC, MLF-10 |
| 文件頁(yè)數(shù)： | 17/31頁(yè) |
| 文件大小： | 1240K |
| 代理商： | TPS62410DRCTG4 |
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www.ti.com
SW1
FB1
SW2
ADJ2
DEF_1
VIN3.3V – 6V
VIN
EN_1
EN_2
MODE/
DATA
TPS62410
GND
L1
C
10 F
IN
m
2.2 H
m
R11
270kW
R12
180kW
V
=1.5V
upto800mA
OUT1
C
=10 F
OUT1
m
V
=2.85V
upto800mA
OUT2
L2
Cff2
33pF
3.3 H
m
R21
825kW
R22
220kW
C
=10 F
OUT2
m
OUTPUT FILTER DESIGN (INDUCTOR AND OUTPUT CAPACITOR)
Inductor Selection
DIL + Vout
1 *
Vout
Vin
L
(6)
I
Lmax + Ioutmax )
DIL
2
(7)
SLVS737 – FEBRUARY 2007
APPLICATION INFORMATION (continued)
Figure 34. Typical Application Circuit 1.5V/2.85V Adjustable Outputs
The device is optimized to operate with inductors of 2.2
H to 4.7H and output capacitors of 10F to 22F.
For operation with a 2.2
H inductor, a 22F capacitor is suggested.
The selected inductor has to be rated for its DC resistance and saturation current. The DC resistance of the
inductance will influence directly the efficiency of the converter. Therefore an inductor with lowest DC resistance
should be selected for highest efficiency.
Equation 6 calculates the maximum inductor current under static load conditions. The saturation current of the
inductor should be rated higher than the maximum inductor current as calculated with Equation 7. This is
recommended because during heavy load transient the inductor current will rise above the calculated value.
With:
f = Switching Frequency (2.25MHz typical)
L = Inductor Value
I
L= Peak to Peak inductor ripple current
ILmax = Maximum Inductor current
The highest inductor current will occur at maximum Vin.
Open core inductors have a soft saturation characteristic and they can usually handle higher inductor currents
versus a comparable shielded inductor.
A more conservative approach is to select the inductor current rating just for the maximum switch current of the
corresponding converter. It must be considered, that the core material from inductor to inductor differs and will
have an impact on the efficiency especially at high switching frequencies.
24
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| TPS62420DRCRG4 | 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 Dual Adj 600mA & 1000mA 2.25MHz RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS62420DRCT | 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 Dual Adj 600mA & 1000mA 2.25MHz RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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