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參數(shù)資料
| 型號： | MAX1537A |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | High-Efficiency, 5x Output, Main Power-Supply Controllers for Notebook Computers |
| 中文描述： | 高效率、5路輸出、主電源控制器，用于筆記本電腦 |
| 文件頁數(shù)： | 30/38頁 |
| 文件大小： | 1427K |
| 代理商： | MAX1537A |
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M
High-Efficiency, 5x Output, Main Power-Supply
Controllers for Notebook Computers
30
______________________________________________________________________________________
9a. This configuration constantly monitors the inductor
current, allowing accurate current-limit protection.
Alternatively, high-power applications that do not
require highly accurate current-limit protection may
reduce the overall power dissipation by connecting a
series RC circuit across the inductor (Figure 9b) with an
equivalent time constant:
where R
L
is the inductor’s series DC resistance. In this
configuration, the current-sense resistance equals the
inductor’s DC resistance (R
SENSE
= R
L
). Use the worst-
case inductance and R
L
values provided by the induc-
tor manufacturer, adding some margin for the
inductance drop over temperature and load.
Output Capacitor Selection
The output filter capacitor must have low enough equiv-
alent series resistance (ESR) to meet output ripple and
load-transient requirements, yet have high enough ESR
to satisfy stability requirements. The output capaci-
tance must be high enough to absorb the inductor
L
R
C
R
L
EQ
EQ
×
=
Figure 9. Current-Sense Configurations
MAX1533A
MAX1537A
C
OUT
INPUT (V
IN
)
INDUCTOR
C
IN
b) LOSSLESS INDUCTOR SENSING
CSL_
CSH_
GND
DL_
DH_
LX_
C
EQ
R
EQ
MAX1533A
MAX1537A
C
OUT
INPUT (V
IN
)
C
IN
N
H
N
L
N
H
N
L
L
D
L
D
L
a) OUTPUT SERIES RESISTOR SENSING
GND
DL_
DH_
LX_
CSL_
CSH_
R
SENSE
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1537AETX+ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX1537ETX | 功能描述:電流和電力監(jiān)控器、調節(jié)器 RoHS:否 制造商:STMicroelectronics 產品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel |
| MAX1537ETX-T | 功能描述:電流和電力監(jiān)控器、調節(jié)器 RoHS:否 制造商:STMicroelectronics 產品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel |
| MAX1537EVKIT | 制造商:Maxim Integrated Products 功能描述:MAIN POWER SUPPLY CONTROLLER FOR NOTEBOOK - Bulk |
| MAX1538ETI | 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
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