參數(shù)資料
型號： HIP1012CB-T
廠商： INTERSIL CORP
元件分類： 電源管理
英文描述： Dual Power Distribution Controller
中文描述： 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO14
封裝： PLASTIC, MS-012AB, SOIC-14
文件頁數(shù)： 1/15頁
文件大?。?/td> 173K
代理商： HIP1012CB-T
1
File Number
4419.4
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
|
Copyright
Intersil Corporation 1999
Hot Plug is a trademark of Core International, Inc.
HIP1012, HIP1012A
Dual Power Distribution Controller
The HIP1012 is a HOT SWAP dual supply power distribution
controller. Two external N-Channel MOSFETs are driven to
distribute power while providing load fault isolation.
At turn-on, the gate of each external N-Channel MOSFET is
charged with a 10
μ
A current source. Capacitors on each
gate (see the Typical Application Diagram), create a
programmable ramp (soft turn-on) to control inrush currents.
A built in charge pump supplies the gate drive for the 12V
supply N-Channel MOSFET switch.
Over current protection is facilitated by two external current
sense resistors. When the current through either resistor
exceeds the user programmed value the controller enters the
current regulation mode. The time-out capacitor, C
TIM
, starts
charging as the controller enters the time out period. Once
C
TIM
charges to a 2V threshold, the N-Channel MOSFETs
are latched off. In the event of a fault at least three times the
current limit level, the N-Channel MOSFET gates are pulled
low immediately before entering time out period. The
controller is reset by a rising edge on either PWRON pin.
Choosing the voltage selection mode the HIP1012 controls
either +12V/5V or +3.3V/+5V supplies.
For those applications where voltage tolerance is a concern
the HIP1012A has a minimum nominal over current threshold
voltage of 50mV as compared to 100mV for the HIP1012.
Ordering Information
Features
HOT SWAP Dual Power Distribution Control for +5V and
+12V or +5V and +3.3V
Provides Fault Isolation
Programmable Current Regulation Level
Programmable Time Out
Charge Pump Allows the Use of N-Channel MOSFETs
Power Good and Over Current Latch Indicators
Enhanced Over Current Sensitivity Available
Redundant Power On Controls
Adjustable Turn-On Ramp
Protection During Turn-On
Two Levels of Current Limit Detection Provide Fast
Response to Varying Fault Conditions
Less Than 1
μ
s Response Time to Dead Short
3
μ
s Response Time to 200% Current Overshoot
Applications
Redundant Array of Independent Disks (RAID) System
Power Distribution Control
Hot Plug, Hot Swap Components
PART NUMBER
TEMP.
RANGE (
o
C)
PACKAGE
PKG.
NO.
HIP1012CB
HIP1012ACB
-0 to 70
14 Ld SOIC
M14.15
HIP1012CB-T
HIP1012ACB-T
-0 to 70
14 Ld SOIC
Tape and Reel
M14.15
Pinout
HIP1012 (SOIC)
TOP VIEW
Typical Application Diagram
8
9
10
11
12
14
13
7
6
5
4
3
2
1
3/12VS
3/12VG
V
DD
PWRON2
5VG
5VS
3/12VISEN
GND
C
PUMP
C
TIM
PGOOD
R
ILIM
5VISEN
MODE/
PWRON1
3/12VS
3/12VG
V
DD
M/PON1
PWRON2
5VG
5VS
PGOOD
3/12VISEN
R
ILIM
GND
C
TIM
C
PUMP
5ISEN
HIP1012
12V
R
LOAD
R
ILIM
C
TIM
POWER ON
INPUTS
C
PUMP
R
SENSE
5V
R
LOAD
R
SENSE
5V OR 3.3V
OPTIONAL
R
FILTER
C
FILTER
V
DD
R
GATE
C
GATE
C
GATE
R
GATE
Data Sheet
November 1999
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