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參數資料
| 型號： | TLE6361G |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 穩壓器 |
| 英文描述： | SWITCHING REGULATOR, 425 kHz SWITCHING FREQ-MAX, PDSO36 |
| 封裝： | POWER, PLASTIC, SO-36 |
| 文件頁數： | 46/57頁 |
| 文件大小： | 1986K |
| 代理商： | TLE6361G |
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TLE 6361 G
Data Sheet, Rev. 2.0
50
2005-03-01
5.2
Buck converter circuit
A typical choice of external components for the buck converter is given in figure 14. For
basic operation of the buck converter the input capacitor C
I2, the bootstrap capacitor
C
BTP, the catch diode DB, the induuctance LB, the output capacitor CB and the charge
pump capacitors C
FLY and CCCP are necessary.
The additional components shown on top of the circuit lower the electromagnetic
emission (L
I, CI1, CI3, RSlew) and the switching losses (RBoost, CBoost, DBoost). For 12V
battery systems the switching loss minimization feature might not be used. In that case
the Boost pin (33) is connected directly to the IN pins (32, 30) and the components
R
Boost, CBoost and DBoost are left away
5.2.1
Buck inductance (L
B) selection:
The inductance value determines together with the input voltage, the output voltage and
the switching frequency the current ripple which occurs during normal operation of the
step down converter. This current ripple is important for the all over ripple at the output
of the switching converter.
As a rule of thumb this current ripple
I is chosen between 10% and 50% of the load
current.
For optimum operation of the control loop of the Buck converter the inductance value
should be in the range indicated in section 3.3, recommended operation range.
When picking finally the inductance of a certain supplier (Epcos, Coilcraft etc.) the
saturation current has to be considered. With a maximum current limit of the Buck
converter of 3.2A an inductance with a minimum saturation current of 3.2A has to be
chosen.
L
VI VOUT
–
() VOUT
fSW VI I
---------------------------------------------------
=
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相關代理商/技術參數 |
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| TLE6361G_05 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Multi-Voltage Processor Power Supply |
| TLE6361GNUMA1 | 制造商:Infineon Technologies AG 功能描述:Multi Voltage Processor Power Supply 36-Pin DSO 制造商:Infineon Technologies AG 功能描述:DC/DC CONVERTER - Tape and Reel 制造商:Infineon Technologies AG 功能描述:IC REG BUCK ADJ 1.5A QUAD PDSO36 |
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| TLE6363G | 功能描述:IC REG BUCK BST ADJ 0.2A PDSO14 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 開關穩壓器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數:1 輸出電壓:3.3V 輸入電壓:4.5 V ~ 24 V PWM 型:- 頻率 - 開關:- 電流 - 輸出:125mA 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 包裝:Digi-Reel® 供應商設備封裝:SOT-6 其它名稱:MAX1836EUT33#TG16DKR |
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