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September 2005
1
M9999-083005
MIC2588/MIC2594
Micrel
MIC2588/MIC2594
Single-Channel, Negative High-Voltage Hot
Swap Power Controllers
General Description
The MIC2588 and the MIC2594 are single-channel, nega-
tive-voltage hot swap controllers designed to address the
need for safe insertion and removal of circuit boards into
live high-voltage system backplanes, while using very few
external components. The MIC2588 and the MIC2594 are
each available in an 8-pin SOIC package and work in con-
junction with an external N-Channel MOSFET for which the
gate drive is controlled to provide inrush current limiting and
output voltage slew-rate control. Overcurrent fault protection
is also provided and includes a programmable overcurrent
threshold. During an output overload condition, a constant-
current regulation loop is engaged to ensure that the system
power supply maintains regulation. If a fault condition exceeds
a built-in 400祍 nuisance-trip delay, the MIC2588 and the
MIC2594 will latch the circuit breakers output off and will
remain in the off state until reset by cycling either the UV/OFF
pin or the power to the IC. A master Power-Good signal is
provided to indicate that the output voltage of the soft-start
circuit is within its valid output range. This signal can be used
to enable one or more DC-DC converter modules.
All support documentation can be found on Micrels web site
at www.micrel.com.
Typical Application
/PWRGD
DRAIN
UV
OV
VDD
SENSE
GATE
VEE
1
8
7
6
5
4
3
2
R1
698k&
1%
R3
12.4k&
1%
R2
11.8k&
1%
C1
1uF
R
SENSE
0.01&
5%
*D1
SMAT70A
100V
M1
SUM110N10-09
R
FDBK
15k&
C3
0.22uF
CFDBK
6.8nF
100V
R4
10&
-48V
OUT
-48V RTN
C5
100uF
C4
0.1uF
-48V
IN
(Long Pin)
-48V RTN
(Long Pin)
*C6
0.33uF
MIC2588-2BM
-48V RTN
(Short Pin)
DC-DC
CONVERTER
IN-
IN+
ON/OFF
#
OUT+
OUT-
+2.5V RTN
+2.5VOUT
VDD
*C2
22nF
Nominal Undervoltage and Overvoltage Thresholds:
  V
UV
= 36.5V
  V
OV
= 71.2V
* Optional components (See Applications Information for more details)
# An external pull-up resistor for the power-good signal is necessary for DC-DC supplies
-
Features
" MIC2588:
   Pin-for-pin functional equivalent to the
   LT1640/LT1640A/LT4250
" Provides safe insertion and removal from live 48V
(nominal) backplanes
" Operates from 19V to 80V
" Electronic circuit breaker function
" Built-in 400祍 nuisance-trip delay (t
FLT
)
" Regulated maximum output current into faults
" Programmable inrush current limiting
" Fast response to short circuit conditions (< 1祍)
" Programmable undervoltage and overvoltage lockouts
(MIC2588-xBM)
" Programmable UVLO hysteresis (MIC2594-xBM)
" Fault reporting:
   Active-HIGH (-1BM) and Active-LOW (-2BM)
   Power-Good output signal
Applications
" Central ofce switching
" 48V power distribution
" Distributed power systems
" Server Networks
Micrel, Inc. " 2180 Fortune Drive " San Jose, CA 95131 " USA " tel + 1 (408) 944-0800 " fax + 1 (408) 474-1000 " http://www.micrel.com
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相关代理商/技术参数
MIC2594-2YM 功能描述:热插拔功率分布 Negative Voltage Hot-Swap Controller - Lead Free RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube
MIC2594-2YM TR 功能描述:热插拔功率分布 Negative Voltage Hot-Swap Controller - Lead Free RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube
MIC2594-2YM-TR 功能描述:Hot Swap Controller 1 Channel -48V 8-SOIC 制造商:microchip technology 系列:- 包装:剪切带（CT） 零件状态:停产 类型:热交换控制器 通道数:1 内部开关:无 应用:-48V 特性:故障超时，闭锁故障 可编程特性:限流，压摆率，UVLO 电压 - 电源:-80 V ~ -19 V 电流 - 输出（最大值）:- 工作温度:-40°C ~ 85°C 电流 - 电源:3mA 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商器件封装:8-SOIC 功能引脚:DRAIN，OFF，ON，/PWRGD 标准包装:1
MIC2595-1BM 功能描述:IC CTRLR HOT SWAP NEG HV 14-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:100 系列:- 类型:热插拔开关 应用:通用 内部开关:是 电流限制:可调 电源电压:9 V ~ 13.2 V 工作温度:-40°C ~ 150°C 安装类型:表面贴装 封装/外壳:10-WFDFN 裸露焊盘 供应商设备封装:10-TDFN-EP（3x3） 包装:管件
MIC2595-1BM TR 功能描述:IC CTRLR HOT SWAP NEG HV 14-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:100 系列:- 类型:热插拔开关 应用:通用 内部开关:是 电流限制:可调 电源电压:9 V ~ 13.2 V 工作温度:-40°C ~ 150°C 安装类型:表面贴装 封装/外壳:10-WFDFN 裸露焊盘 供应商设备封装:10-TDFN-EP（3x3） 包装:管件
MIC2595-1YM 功能描述:热插拔功率分布 Negative Voltage Hot-Swap Controller - Lead Free RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube
MIC2595-1YM TR 功能描述:热插拔功率分布 Negative Voltage Hot-Swap Controller - Lead Free RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube
MIC2595-1YM-TR 功能描述:Hot Swap Controller, Sequencer 1 Channel -48V 14-SOIC 制造商:microchip technology 系列:- 包装:剪切带（CT） 零件状态:停产 类型:热交换控制器，序列发生器 通道数:1 内部开关:无 应用:-48V 特性:闭锁故障 可编程特性:限流，故障超时，UVLO 电压 - 电源:-80 V ~ -19 V 电流 - 输出（最大值）:- 工作温度:-40°C ~ 85°C 电流 - 电源:4mA 安装类型:表面贴装 封装/外壳:14-SOIC（0.154"，3.90mm 宽） 供应商器件封装:14-SOIC 功能引脚:CFILTER，CNLD，DRAIN，PGTIMER，OFF，ON，PWRGD1，PWRGD2，PWRGD3 标准包装:1