收藏本站
MP2363 – 3A, 27V, 365KHz STEP-DOWN CONVERTER
MP2363 Rev. 1.0
6/15/2006
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 2, 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
(which typically has a value no higher than
37.5KHz).
2. Choose the compensation capacitor (C3) to
achieve the desired phase margin. For
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:
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 365KHz 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
×
=
Soft-Start Capacitor
To reduce input inrush current during startup, a
programmable
soft-start
connecting a capacitor (C4) from pin SS to
GND. The soft-start time is given by:
is
provided
by
)
F
(
C
45
)
ms
(
t
SS
SS
μ
×
=
To reduce the susceptibility to noise, do not
leave SS pin open. Use a capacitor with small
value if you do not need soft-start function
.
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.
MP2363
SW
BS
3
1
10nF
5V
DIODE
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.
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
EV2364DF-01A 1.5A, 23V, 1.4MHz Dual Step-Down Converter Evaluation Board
EV2365DN-00A 3A, 28V, 1.4MHz Step-Down Converter
EV2365DN-01A 3A, 28V, 1.4MHz Step-Down Converter Evaluation Board
EV2995-10 G2995 Evaluation Board Manual
EVG2995 G2995 Evaluation Board Manual
EV3011DQ-00A 1x, 1.5x, 2x High Efficiency Charge Pump 2 White LED Driver Evaluation Board
EV3204DJ-00A Fixed Frequency White LED Driver
EV3205DJ-00A 1.3MHz Fixed Frequency 5 White LED Driver
相关代理商/技术参数
EV2364DF-00A 制造商:MPS 制造商全称:Monolithic Power Systems 功能描述:4 Output DSL Power Supply
EV2364DF-01A 制造商:MPS 制造商全称:Monolithic Power Systems 功能描述:Dual 1.5A, 23V, 1.4MHz Step-Down Converter
EV2365DN-00A 制造商:MPS 制造商全称:Monolithic Power Systems 功能描述:3A, 28V, 1.4MHz Step-Down Converter
EV2365DN-01A 制造商:MPS 制造商全称: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:共模滤波器/扼流器 44mH 0.5A - VERTICAL COMMN-MODE SPPRESSN RoHS:否 制造商:TDK 电感: 阻抗:35 Ohms 容差: 最大直流电流:0.1 A 最大直流电阻:1.5 Ohms 自谐振频率: Q 最小值: 工作温度范围:- 25 C to + 85 C 端接类型:SMD/SMT 封装 / 箱体:0302 (0806 metric) 系列:TCE
EV24-0.5-02-44M-1 功能描述:共模滤波器/扼流器 44mH 0.5A - VERTICAL COMMN-MODE SPPRESSN RoHS:否 制造商:TDK 电感: 阻抗:35 Ohms 容差: 最大直流电流:0.1 A 最大直流电阻:1.5 Ohms 自谐振频率: Q 最小值: 工作温度范围:- 25 C to + 85 C 端接类型:SMD/SMT 封装 / 箱体:0302 (0806 metric) 系列:TCE
EV24-0.8-02-18M 功能描述:共模滤波器/扼流器 18mH 0.8A - VERTICAL COMMN-MODE SPPRESSN RoHS:否 制造商:TDK 电感: 阻抗:35 Ohms 容差: 最大直流电流:0.1 A 最大直流电阻:1.5 Ohms 自谐振频率: Q 最小值: 工作温度范围:- 25 C to + 85 C 端接类型:SMD/SMT 封装 / 箱体:0302 (0806 metric) 系列:TCE
EV2400 功能描述:界面开发工具 EV2400 Eval Mod Interface Board RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V