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參數(shù)資料
| 型號(hào)： | TPIC74100QPWPRQ1 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 2.5 A SWITCHING REGULATOR, 440 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封裝： | GREEN, PLASTIC, HTSSOP-20 |
| 文件頁數(shù)： | 18/30頁 |
| 文件大?。?/td> | 781K |
| 代理商： | TPIC74100QPWPRQ1 |
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Buck Mode
L +
V
IN
* VOUT
V
OUT
f
SW
DIL
V
IN
(1)
I
L,max
+ IOUT )
DIL
2
(2)
DVOUT + DIL
ESR )
1
8
f
SW
C
OUT
(3)
C
OUT +
I
pk(t on
) toff)
8
V
ripple
(4)
Boost Mode
L +
V
OUT
* VIN
V
IN
f
SW
DIL
V
OUT
(5)
Ip + IL,max + IIN )
DIL
2
(6)
DVOUT + Ip
ESR )
I
OUT
1 *
V
IN
V
OUT
f
SW
C
OUT
(7)
BUCK/BOOST SWITCH-MODE REGULATOR
SLIS125 – DECEMBER 2006
In a two-sided PCB, it is recommended to have ground planes on both sides of the PCB to help reduce noise
and ground-loop errors. The ground connection for the input and output capacitors and IC ground should be
connected to this ground plane.
In a multilayer PCB, the ground plane is used to separate the power plane (where high switching currents and
components are placed) from the signal plane (where the feedback trace and components are) for improved
performance.
Also, arrange the components such that the switching-current loops curl in the same direction. Place the
high-current components such that during conduction, the current path is in the same direction. This prevents
magnetic field reversal caused by the traces between the two half-cycles, helping to reduce radiated EMI.
Select inductor ripple current DIL: for example I
L = 0.2 × IOUT
Calculate inductor L:
where f
SW is the regulator switching frequency.
Inductor peak current:
Output voltage ripple:
Usually, the first term is dominant.
Select inductor ripple current I
L: for example IL = 0.2 × IIN
Calculate inductor L:
where f
SW is the regulator switching frequency.
Inductor peak current:
Output voltage ripple:
25
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPIC74100QPWPRQ1 | 制造商:Texas Instruments 功能描述:SWITCHING REG BUCK/BOOST 20HTSSOP |
| TPIC74101EVM | 功能描述:電源管理IC開發(fā)工具 TPIC74101 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 |
| TPIC74101-Q1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:BUCK/BOOST SWITCH-MODE REGULATOR |
| TPIC74101QPWPRQ1 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 AC Buck/Boost Switch Mode Reg RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(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 |
| TPIC8101 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:KNOCK SENSOR INTERFACE |
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