參數(shù)資料
型號(hào): MIC2595R-1BM
廠(chǎng)商: MICREL INC
元件分類(lèi): 電源管理
英文描述: SINGLE-CHANNEL NEGATIVE HIGH VOLTAGE HOT SWAP POWER CONTROLLERS/SEQUENCERS
中文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO14
封裝: SOIC-14
文件頁(yè)數(shù): 1/17頁(yè)
文件大小: 100K
代理商: MIC2595R-1BM
March 2004
1
M9999-031504
MIC2589/2595
Micrel
MIC2589/MIC2595
Single-Channel, Negative High-Voltage Hot
Swap Power Controllers/Sequencers
General Description
The MIC2589 and MIC2595 are single-channel, negative-
voltage hot swap controllers designed to address the need for
safe insertion and removal of circuit boards into “l(fā)ive” system
backplanes, while using few external components. The
MIC2589/89R and the MIC2595/95R are each available in
14-pin SOIC packaging and work in conjunction with an
external N-Channel MOSFET for which the gate drive is
controlled to provide inrush current limiting and output volt-
age slew-rate control. Overcurrent fault protection is also
provided for which the overcurrent threshold and the
overcurrent duration are programmable. Very fast fault re-
sponse is provided to ensure that system power supplies
maintain regulation even during output short circuits. This
family offers two responses to a circuit breaker fault condition:
the MIC2589 and MIC2595 latch the circuit breaker’s output
off if the overcurrent threshold interval is exceeded while the
MIC2589R and MIC2595R automatically attempt to restart at
a fixed duty cycle after a current limit fault. A primary
Power-Good signal and two secondary (delayed and stag-
gered) Power-Good signals are provided to indicate that the
output voltage of the inrush current limiter is within its valid
operating range. These signals can be used to perform an all-
at-once or a sequenced enabling of one or more DC-DC
power modules.
All support documentation can be found on Micrel’s web
site at www.micrel.com.
Typical Application
VDD
VEE
SENSE
GATE
DRAIN
CFILTER
UV
OV
10
9
7
4
3
14
11
5
MIC2589-1BM
MIC2589R-1BM
CNLD
6
PWRGD1
1
PWRGD2
12
PWRGD3
13
PGTIMER
2
C
GATE
M1
R4
0
C
PG
C
FILTER
C
NLD
48V
INPUT
(Long Pin)
48V
RETURN
(Short Pin)
48V
RETURN
(Long Pin)
R
SENSE
DC-DC Converter
IN+
100
μ
F
/ON/OFF
IN
+3.3V
+3.3V
RETURN
OUT
GND
DC-DC Converter
IN+
100
μ
F
/ON/OFF
IN
+5V
+5V
RETURN
OUT
GND
DC-DC Converter
IN+
100
μ
F
/ON/OFF
IN
+2.5V
+2.5V
RETURN
OUT
GND
R3
12.4k
1%
Input Overvoltage = 71.2V
Input Undervoltage = 36.5V
(See "Functional Description"
ˇ
for more detail)
R2
11.8k
1%
R1
698k
1%
Features
Provides safe insertion and removal from live
48V (nominal) backplanes
Operates from
19V to
80V
Fast responding circuit breaker (<1
μ
s) to short circuit
conditions
User-programmable overcurrent detector response time
Electronic circuit breaker function:
Output latch OFF (MIC2589/95) or
Output auto-retry (MIC2589R/95R)
Active current regulation precisely controls inrush
currents
Regulated maximum output currents into faults
Programmable undervoltage and overvoltage lockouts
(MIC2589/89R)
Programmable UVLO hysteresis (MIC2595/95R)
Staggered
Power-Good
outputs provide load
sequencing
Fault reporting:
Active-HIGH (MIC25XX-1) and Active-LOW
(MIC25XX-2) Power-Good signal output
Applications
Central office switching
48V power distribution
Distributed power systems
Micrel, Inc. 1849 Fortune Drive San Jose, CA 95131 USA tel + 1 (408) 944-0800 fax + 1 (408) 944-0970 http://www.micrel.com
相關(guān)PDF資料
PDF描述
MIC2589 Replaced by PTH05060W :
MIC2589-1BM Replaced by PTH05060W :
MIC2589-2BM Replaced by PTH05060W :
MIC2595 Replaced by PTH05060W :
MIC2595-1BM Replaced by PTH05060W :
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