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| 型号： | TLE6361G |
| 厂商： | INFINEON TECHNOLOGIES AG |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING REGULATOR, 425 kHz SWITCHING FREQ-MAX, PDSO36 |
| 封装： | POWER, PLASTIC, SO-36 |
| 文件页数： | 48/57页 |
| 文件大小： | 1986K |
| 代理商： | TLE6361G |
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TLE 6361 G
Data Sheet, Rev. 2.0
52
2005-03-01
5.2.5
Bootstrap capacitor (C
BTP)
The voltage at the Bootstrap capacitor does not exceed 15V, a ceramic type with a
minimum of 2% of the buck output capacitance and voltage class 16V would be
sufficient.
5.2.6
External charge pump capacitors (C
FLY, CCCP)
Out of the feedback voltage the charge pump generates a voltage between 8 and 10V.
The fly capacitor connected between C+ and C- is charged with the feedback voltage
level and discharged to achieve the (almost) double voltage level at CCP. C
FLY is chosen
to 100nF and C
CCP to 220nF, both ceramic types.
The connection of CCP to a voltage source of e.g. 7V (take care of the maximum
ratings!) via a diode improves the start-up behavior at very low battery voltage. The diode
with the cathode on CCP has to be used in order to avoid any influence of the voltage
source to the device’s operation and vice versa.
5.2.7
Input filter components for reduced EME (C
I1, CI2, CI3, LI, RSlew)
At the input of Buck converters a square wave current is observed causing
electromagnetical interference on the battery line. The emission to the battery line
consists on one hand of components of the switching frequency (fundamental wave) and
its harmonics and on the other hand of the high frequency components derived from the
current slope. For proper attenuation of those interferers a
π-type input filter structure is
recommended which is built up with inductive (L
I) and capacitive components (CI1, CI2,
C
I3). The inductance can be chosen up to the value of the Buck converter inductance,
higher values might not be necessary, C
I1 and CI3 should be ceramic types and for CI2 an
input capacitance with very low ESR should be chosen and placed as close to the input
of the Buck converter as possible.
Inexpensive input filters show due to their parasitrics a notch filter characteristic, which
means basically that the lowpass filter acts from a certain frequency as a highpass filter
and means further that the high frequency components are not attenuated properly. For
that reason the TLE 6361 G offers the possibility of current slope adjustment. The current
transistion time can be set by the external slew resistor to times between 20ns and 80ns
by varying the resistor value bewteen 0
(fastest transition) and 20k (slowest
transistion).
5.2.8
Feedback circuit for minimum switching loss (R
Boost, CBoost, DBoost)
To decrease the switching losses to a mininum the external components R
Boost, CBoost
and D
Boost are needed. The current through the feedback resistor RBoost is about a few
mA where the Diode D
Boost and the capacitor CBoost run a part of the load current.
If this feature is not needed the three components are not needed and the Boost pin (33)
can be connected directly to the IN pins(32, 30).
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TLE6361G_05 | 制造商:INFINEON 制造商全称: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 |
| TLE6363 | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:Multifunctional Voltage Regulator and Watchdog |
| TLE6363_03 | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:Multifunctional Voltage Regulator and Watchdog |
| TLE6363G | 功能描述:IC REG BUCK BST ADJ 0.2A PDSO14 RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:3.3V 输入电压:4.5 V ~ 24 V PWM 型:- 频率 - 开关:- 电流 - 输出:125mA 同步整流器:无 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 包装:Digi-Reel® 供应商设备封装:SOT-6 其它名称:MAX1836EUT33#TG16DKR |
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