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參數(shù)資料
| 型號(hào)： | EV2365DN-00A |
| 廠商： | Monolithic Power Systems, Inc. |
| 英文描述： | 3A, 28V, 1.4MHz Step-Down Converter |
| 中文描述： | 第3A，28V的，1.4MHz的降壓轉(zhuǎn)換器 |
| 文件頁數(shù)： | 9/11頁 |
| 文件大?。?/td> | 397K |
| 代理商： | EV2365DN-00A |
MP2365 – 3A, 28V, 1.4MHz STEP-DOWN CONVERTER
MP2365 Rev. 0.91
7/10/2006
www.MonolithicPower.com
9
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
2006 MPS. All Rights Reserved.
To optimize the compensation components for
conditions not listed in Table 3, the following
procedure can be used.
1. Choose the compensation resistor (R3) to set
the desired crossover frequency. Determine the
R3 value by the following equation:
FB
OUT
V
CS
EA
C
V
G
G
f
2
C
×
2
3
R
×
×
×
π
=
Where f
C
is the desired crossover frequency.
2. Choose the compensation capacitor (C3) to
achieve
the
desired
applications with typical inductor values, setting
the compensation zero, f
Z1
, below one forth of the
crossover frequency provides sufficient phase
margin. Determine the C3 value by the following
equation:
phase
margin.
For
C
f
3
R
2
4
3
C
×
×
π
>
3. Determine if the second compensation
capacitor (C6) is required. It is required if the ESR
zero of the output capacitor is located at less than
half of the 1.4MHz switching frequency, or the
following relationship is valid:
2
f
R
2
C
2
1
S
ESR
<
×
×
π
If this is the case, then add the second
compensation capacitor (C6) to set the pole f
P3
at the location of the ESR zero. Determine the
C6 value by the equation:
3
R
R
2
C
6
C
ESR
×
=
External Bootstrap Diode
It is recommended that an external bootstrap
diode be added when the system has a 5V
fixed input or the power supply generates a 5V
output. This helps improve the efficiency of the
regulator. The bootstrap diode can be a low
cost one such as IN4148 or BAT54.
MP2365
SW
BS
10nF
5V
Figure 2—External Bootstrap Diode
This diode is also recommended for high duty
cycle operation (when
IN
OUT
V
V
>65%) and high
output voltage (V
OUT
>12V) applications.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EV2365DN-01A | 制造商:MPS 制造商全稱:Monolithic Power Systems 功能描述:3A, 28V, 1.4MHz Step-Down Converter Evaluation Board |
| EV24-0.5-02-44M | 功能描述:共模濾波器/扼流器 44mH 0.5A - VERTICAL COMMN-MODE SPPRESSN RoHS:否 制造商:TDK 電感: 阻抗:35 Ohms 容差: 最大直流電流:0.1 A 最大直流電阻:1.5 Ohms 自諧振頻率: Q 最小值: 工作溫度范圍:- 25 C to + 85 C 端接類型:SMD/SMT 封裝 / 箱體:0302 (0806 metric) 系列:TCE |
| EV24-0.5-02-44M-1 | 功能描述:共模濾波器/扼流器 44mH 0.5A - VERTICAL COMMN-MODE SPPRESSN RoHS:否 制造商:TDK 電感: 阻抗:35 Ohms 容差: 最大直流電流:0.1 A 最大直流電阻:1.5 Ohms 自諧振頻率: Q 最小值: 工作溫度范圍:- 25 C to + 85 C 端接類型:SMD/SMT 封裝 / 箱體:0302 (0806 metric) 系列:TCE |
| EV24-0.8-02-18M | 功能描述:共模濾波器/扼流器 18mH 0.8A - VERTICAL COMMN-MODE SPPRESSN RoHS:否 制造商:TDK 電感: 阻抗:35 Ohms 容差: 最大直流電流:0.1 A 最大直流電阻:1.5 Ohms 自諧振頻率: Q 最小值: 工作溫度范圍:- 25 C to + 85 C 端接類型:SMD/SMT 封裝 / 箱體:0302 (0806 metric) 系列:TCE |
| EV2400 | 功能描述:界面開發(fā)工具 EV2400 Eval Mod Interface Board RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評(píng)估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
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