- 您现在的位置：买卖IC网 > PDF目录80206 > LT1701-7 (POWER-ONE INC) 1-OUTPUT 550 W AC-DC REG PWR SUPPLY MODULE PDF资料下载
参数资料
| 型号： | LT1701-7 |
| 厂商： | POWER-ONE INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 550 W AC-DC REG PWR SUPPLY MODULE |
| 封装： | CASE T01, MODULE |
| 文件页数： | 10/32页 |
| 文件大小： | 1000K |
| 代理商： | LT1701-7 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页当前第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页
BCD20023 Rev. AA, 3-Sep-2008
Page 18 of 32
www.power-one.com
T Series Data Sheet
500 Watt AC-DC Converters
Different Configurations and Applications
Power Boosting, Redundant Configuration,
Hot Swap
For redundant configurations the outputs should be decoupled
by ORing diodes, protecting the DC-bus in case of an internal
short circuit at the output of one converter.
Decoupling can also be done using appropriate fuses in the
output path of each converter. If the battery voltage has to be
monitored, choose option D.
+
–
Converter
Vo–
Vo+
Vo–
Vo+
06077a
+
–
Vo–
Vo+
Vo–
Vo+
LT/UTxx40
HC–
HC+
HC–
Fuse
+
–
D set
R
43k2
R
43k2
D set
(21k5)
06079a
Fig. 32
Redundant configuration without battery back-up
Fig. 33
T xx40 with battery back-up. Power Down signal monitoring
the battery voltage.
battery-buffered bus. Should however the converter already be
connected, when the battery is switched to the bus, the resulting
charge current will not be limited. To avoid having the fuse blow or
a possible arc across the circuit breaker, the battery charger
ORing diodes provide reverse polarity protection with no
reverse current in case of hot plug-in, but have the
disadvantage of some forward voltage drop.
For battery applications, decoupling with fuses is recom-
mended, since the voltage drop over the diodes would
decrease the battery voltage. In case of an internal short circuit
of a converter, the battery will deliver a very large current
causing the respective fuse to blow. The fuse should be
mounted in the positive power path of the converter, since the
monitoring signals are referenced to the negative path. The
fuse type should be suitable for DC application having a
current rating of 20 A or more with high breaking capability,
e.g., Littlefuse, series 314.
To enable hot plug-in in systems decoupled with fuses, the T
Series converters are fitted with an NTC resistor, limiting the
reverse current flowing into the discharged output capacitors
(see Functional Description).
For this purpose HC+ (pin 16) and HC– (pin 18) have to be
connected to Vo+ and Vo– respectively; see fig. 33. Since pins
16 and 18 are leading pins, the output capacitors are
precharged through the internal NTC resistor, before any other
pin makes contact. This protects the connector and prevents
the DC bus voltage from dropping during hot plug-in. Hot swap
should be done gently. Subsequent hot-swap actions should
be avoided. After disconnecting an operating converter, it
should be cooled down prior to reconnecting to the bus to
avoid damage of the fuse or the converter.
Note: The internal NTC limits the reverse charge current flowing
into the output capacitors, when the converter is plugged into a
should be powered by the mains prior to connecting the battery.
With ORing diodes, no reverse charge current flows from the
power bus into the output capacitors.
Battery Size and Ripple Current
Some consideration should be given to the battery size.
According to VDE 0510 part 2, the low frequency ripple current
of the floating charge current should not exceed 5 A per 100 Ah
capacity (0.05 C). The power factor corrected single step
conversion of the line input voltage to the low DC output
voltage generates a ripple voltage at the output of twice the
input frequency, causing a ripple current into the connected
battery.
T1701/1702
Vo: 56 V
T1701/1702
Vo: 56 V
T1740-7D
Vo range:
50.5...56 V
Battery
+
–
Load
06081a
Fig. 34
Configuration for a larger system with only a small battery
相关PDF资料 |
PDF描述 |
|---|---|
| LTC4413EDD-1 | SPECIALTY ANALOG CIRCUIT, PDSO10 |
| LW025A8 | 1-OUTPUT 25 W DC-DC REG PWR SUPPLY MODULE |
| LTC3109IUF#TRPBF | 0.026 A SWITCHING REGULATOR, PQCC20 |
| LM4040CSD-250GT3 | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.5 V, PDSO5 |
| LWN2880-6ERD2M1FK2G | 2-OUTPUT DC-DC REG PWR SUPPLY MODULE |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1702-7 | 功能描述:AC-DC BATTERY CHARGER 48V 11A RoHS:否 类别:电源 - 外部/内部（非板载） >> AC DC 转换器 系列:* 产品培训模块:MP Modular-Configurable AC-DC Power Supply 特色产品:Configurable Power Supplies 标准包装:1 系列:MP |
| LT170A | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Linear Hall-Effect Sensor |
| LT170E2 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:LT170E2 |Data Sheet |
| LT170Z | 制造商:SEOUL 制造商全称:Seoul Semiconductor 功能描述:GREEN OVAL LAMP LED |
| LT171 | 制造商:SEOUL 制造商全称:Seoul Semiconductor 功能描述:RED LAMP LED |
发布紧急采购，3分钟左右您将得到回复。