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參數(shù)資料
| 型號： | SP6122ACU-15 |
| 英文描述： | Low Voltage, Micro 8, PFET, Buck Controller Ideal for 1A to 5A, Small Footprint, DC-DC Power Converters |
| 中文描述： | 低電壓，微8，PFET的，降壓控制器適合第1A至5A，占地面積小，DC - DC電源轉(zhuǎn)換器 |
| 文件頁數(shù)： | 9/19頁 |
| 文件大小： | 174K |
| 代理商： | SP6122ACU-15 |
9
Date: 10/02/04
SP6122 Low Voltage, Micro 8, PFET, Buck Controller Copyright 2004 Sipex Corporation
SP6122
V
CC
FFLAG
V
OUT
ENABLE
PDRV
GND
I
SET
I
SENSE
FFLAG
V
OUT
RS
1.00k
DS
STPS2L25U
Q1
ENABLE
C
IN
47
μ
F
Ceramc
V
IN
+3.3V
2.2
μ
H
+1.9V
1
2
3
J1
CEN
4.7nF
GND
L1
C
470
μ
F
+
R1
6.5k
R2
12.5k
+ 4.7
μ
F
Ceramc
1
2
3
4
8
7
6
5
V
OUT
PMOS
PDS6375
Figure 1. SP6122 Evaluation Board Application Schematic
APPLICATION INFORMATION
As an SP6122 application example, we will
use the circuit from the SP6122 Evaluation
Board Manual. This evaluation board uses
the Sipex SP6122ACU, 1.25V adjustable
PFET controller to realize a 3.3V to 1.9V
step down converter. The board is opti-
mized for 1A – 4A operation and has an
R
DS(ON)
over current trip threshold of about
7A. The body of the applications section
contains:
Data for the Evaluation Board
Guidelines for Component Selection
Features and Protection
Layout Guidelines
Introduction to the “Buck Cad Calculator”
Spreadsheet
Data For Evaluation Board
The SP6122 is engineered for size and mini-
mum pin count, yet has a very accurate 2.0%
reference over line, load and temperature.
Figure 2 data shows a typical SP6122 Evalu-
ation Board Efficiency plot, with efficiencies to
88% and output currents to 4A. Load Regula-
tion plot in Figure 3 shows an essentially flat
response of only 3mV change for up to 4A
load. Figure 4 Line Regulation illustrates a
1.90V output that varies only 4mV or 0.2% for
an input voltage change from 3.0V to 5.5V.
While data on individual power supply boards
may vary, the capability of the SP6122 of
achieving high accuracy over load and line
shown here is quite impressive and desirable
for accurate power supply design.
83
84
85
86
87
88
89
0
1
2
3
4
5
I
LOAD
(A)
E
Figure 2. SP6122 Efficiency with V
IN
= 3.3V,
V
OUT
= 1.9V.
相關PDF資料 |
PDF描述 |
|---|---|
| SP6122CU | Evaluation Board Manual |
| SP6122EB | Evaluation Board Manual |
| SP6122UEB | Evaluation Board Manual |
| SP6122ACU-1.5 | Low Voltage, Micro 8, PFET, Buck Controller Ideal for 1A to 5A, Small Footprint, DC-DC Power Converters |
| SP6122 | Low Voltage, Micro 8, PFET, Buck Controller Ideal for 1A to 5A, Small Footprint, DC-DC Power Converters |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| SP6122ACU-15/TR | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Low Voltage, Micro 8, PFET, Buck Controller Ideal for 1A to 5A, Small Footprint, DC-DC Power Converters |
| SP6122ACU-L | 功能描述:DC/DC 開關控制器 Low Voltage, Micro 8 PFET Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| SP6122ACU-L/TR | 功能描述:DC/DC 開關控制器 Low Voltage, Micro 8 PFET Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| SP6122ACU-L-1-5 | 制造商:Exar Corporation 功能描述:BUCK CONTROLLER LOW VOLT PFET 6122 |
| SP6122CU | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Evaluation Board Manual |
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