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參數(shù)資料
| 型號： | L6615N |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | HIGH/LOW SIDE LOAD SHARE CONTROLLER |
| 中文描述： | 高/低側(cè)負載共享控制器 |
| 文件頁數(shù)： | 8/20頁 |
| 文件大?。?/td> | 392K |
| 代理商： | L6615N |
L6615
8/20
APPLICATION INFORMATION
Index
page
8
9
10
10
13
14
15
16
1.
2.
3.
4.
5.
6.
7.
8.
Introduction
Current sense section
Share drive section, error amplifier and adjust amplifier
Designing with L6615
Current sense methods
Application ideas
Low voltage buses
Offset Trimming
1
Power supply systems are often designed by paralleling converters in order to improve performance and
reliability.
To ensure uniform distribution of stresses, the total load current should be shared appropriately among
the converters.
A typical application is showed in fig. 9 for a series of N paralleled modules (PS#1 to PS#N): each of them
exhibits 4 terminals: two for the power output (+OUT, -OUT) and two for the remote sense signals
(+OUT_S, -OUT_S).
On the power lines are placed the sense resistors R
SENSE
(for the current sensing) and the OR-ing diodes
(to avoid that the failure of one module shorts the load out)
L6615 allows attaining an automatic master-slave current sharing architecture: one L6615 is associated to each
power supply and all these IC's are linked each other through the share bus (referred to the common ground).
This kind of system configuration is preferred to the systems in which a single current sharing controller is
used because of robustness, reliability and flexibility.
To configure a load share controller, few passive components are used. A brief device explanation will
follow with the formulas useful to set these external components.
INTRODUCTION
Figure 9. Typical high side connection
CS-
CGA
CS+
VCC
ADJ
SHARE
GND
COMP
3
2
4
1
5
6
7
8
L6615
+OUT
GND
PS #1
C
C
R
C
R
CGA
R
ADJ
R
SENSE
CS-
CGA
CS+
VCC
ADJ
SHARE
GND
COMP
3
2
4
1
5
6
7
8
L6615
+OUT
+OUT_S
-OUT
PS #N
C
C
R
C
R
CGA
R
ADJ
R
SENSE
+OUT
+OUT_S
-OUT_S
-OUT
R
G1
R
G2
R
G1
R
G2
SHARE BUS
LOAD
-OUT_S
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