参数资料
型号: MIC2588-2BM TR
厂商: Micrel Inc
文件页数: 20/21页
文件大小: 1079K
描述: IC CTRLR HOT SWAP NEG HV 8-SOIC
标准包装: 2,500
类型: 热交换控制器
应用: -48V Dist 电源系统,AdvancedTCA ? 系统
内部开关:
电流限制: 可调
电源电压: -19 V ~ -80 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
供应商设备封装: 8-SOIC
包装: 带卷 (TR)
其它名称: MIC2588-2BMTR
MIC2588-2BMTR-ND
September 2005
20
M9999-083005
MIC2588/MIC2594
Micrel
/PWRGD Signal Drive Capability
The /PWRGD signal can be used to drive an optoisolator or
an LED. The use of an optoisolator is sometimes needed
to protect I/O signals (e.g., /PWRGD, RESET, ENABLE) of
both the controller and downstream DC-DC converter(s)
from damage caused by common mode transients. Such
/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&
-48VOUT
-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
Nominal Undervoltage and Overvoltage Thresholds:
  VUV = 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
and all other load modules not equipped with internal pull-up impedence
VDD
*C2
22nF
1
6
5
2
MOC207-M
R5
43k&
Figure 10. Optoisolator Driven by /PWRGD Signal
is the case when an EMI lter is utilized to prevent DC-DC
converter switching noise from being injected back onto the
power supply. The circuit of Figure 10 shows how to con-
gure an optoisolator driven by the /PWRGD signal of the
MIC2588 controller.
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