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HIP1012

更新时间： 2024-11-14 22:51:19
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英特矽尔 - INTERSIL 控制器
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15页 176K
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Dual Power Distribution Controller

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HIP1012 数据手册

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HIP1012, HIP1012A  
Data Sheet  
November 1999  
File Number 4419.4  
Dual Power Distribution Controller  
Features  
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.  
• HOT SWAP Dual Power Distribution Control for +5V and  
+12V or +5V and +3.3V  
• Provides Fault Isolation  
At turn-on, the gate of each external N-Channel MOSFET is  
charged with a 10µA 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.  
• 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  
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  
• Adjustable Turn-On Ramp  
current regulation mode. The time-out capacitor, C  
, starts  
TIM  
• Protection During Turn-On  
charging as the controller enters the time out period. Once  
charges to a 2V threshold, the N-Channel MOSFETs  
C
• Two Levels of Current Limit Detection Provide Fast  
Response to Varying Fault Conditions  
TIM  
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.  
• Less Than 1µs Response Time to Dead Short  
• 3µs Response Time to 200% Current Overshoot  
Choosing the voltage selection mode the HIP1012 controls  
either +12V/5V or +3.3V/+5V supplies.  
Applications  
• Redundant Array of Independent Disks (RAID) System  
• Power Distribution Control  
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.  
• Hot Plug™, Hot Swap Components  
Ordering Information  
TEMP.  
PKG.  
NO.  
o
PART NUMBER RANGE ( C)  
PACKAGE  
14 Ld SOIC  
HIP1012CB  
-0 to 70  
M14.15  
HIP1012ACB  
HIP1012CB-T  
-0 to 70  
14 Ld SOIC  
M14.15  
HIP1012ACB-T  
Tape and Reel  
Pinout  
Typical Application Diagram  
HIP1012 (SOIC)  
TOP VIEW  
C
PUMP  
R
SENSE  
R
LOAD  
1
3/12VISEN  
3/12VS  
3/12VG  
14  
13  
R
12V  
HIP1012  
GATE  
2
3
4
5
6
7
R
ILIM  
3/12VISEN  
3/12VS  
R
OPTIONAL  
ILIM  
C
V
R
12 GND  
11 C  
GATE  
DD  
ILIM  
3/12VG  
R
FILTER  
V
DD  
GND  
MODE/  
PWRON1  
V
PUMP  
DD  
C
PUMP  
C
10 C  
M/PON1  
PWRON2  
5VG  
FILTER  
TIM  
C
POWER ON  
INPUTS  
PWRON2  
5VG  
TIM  
5V OR 3.3V  
C
TIM  
9
8
PGOOD  
5VISEN  
PGOOD  
5ISEN  
R
5VS  
GATE  
5V  
5VS  
R
C
R
GATE  
SENSE  
LOAD  
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.  
1
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