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参数资料
| 型号： | L6615N |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDIP8 |
| 封装： | MINI, DIP-8 |
| 文件页数： | 19/20页 |
| 文件大小： | 394K |
| 代理商： | L6615N |
L6615
8/20
APPLICATION INFORMATION
Index
page
1.
Introduction
8
2.
Current sense section
9
3.
Share drive section, error amplifier and adjust amplifier
10
4.
Designing with L6615
10
5.
Current sense methods
13
6.
Application ideas
14
7.
Low voltage buses
15
8.
Offset Trimming
16
1
INTRODUCTION
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 RSENSE (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.
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
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_S
-OUT
PS #N
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
CS-
CGA
CS+
VCC
ADJ
SHARE
GND
COMP
3
2
4
1
5
6
7
8
L6615
+OUT
GND
PS #1
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_S
-OUT
PS #N
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
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相关代理商/技术参数 |
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|---|---|
| L6622-01 | 制造商:HAMAMATSU 制造商全称:Hamamatsu Corporation 功能描述:130 KV MICROFOCUS X-RAY SOURCE |
| L-663 | 制造商:RHOMBUS-IND 制造商全称:Rhombus Industries Inc. 功能描述:CURRENT SENSE INDUCTOR |
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| L6660 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:MILLI-ACTUATOR DRIVER |
| L6668 | 功能描述:电流型 PWM 控制器 SMART PRIMARY CONTROLLER RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
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