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PDF PI2002 Data sheet ( Hoja de datos )
| Número de pieza | PI2002 | |
| Descripción | Active ORing Controller IC | |
| Fabricantes | Vicor Corporation | |
| Logotipo |  |
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PI2002
Cool-ORingTM Series
Active ORing Controller IC with Load Disconnect Feature
Description
The PI2002 Cool-ORingTM solution is a high-speed
Active ORing controller IC with a load disconnect
feature designed for use with back-to-back N-
channel MOSFETs in redundant power system
architectures. The PI2002 Cool-ORing controller
enables an extremely low power loss solution with
fast dynamic response to fault conditions, critical for
high availability systems. The PI2002 controls back-
to-back MOSFETs providing true bi-directional
switch capabilities to protect against both power
source and load fault conditions.
The gate drive output turns the MOSFETs on in
normal steady state operation, while achieving high-
speed turn-off during input power source fault
conditions, that cause reverse current flow, with
auto-reset once the fault clears. The PI2002 has the
added benefit of being able to protect against output
load fault conditions that may induce excessive
forward current and device over-temperature by
removing gate drive from the back-to-back
MOSFETs with an auto-retry programmable off-time.
The back-to-back MOSFETs drain-to-drain voltage is
monitored to detect normal forward, excessive
forward, light load and reverse current flow. The
PI2002 provides an active low fault flag output to the
system during fault condition. A temperature
www.DastaeSnhseient4gU.cfoumnction turns off the MOSFETs and
indicates a fault if the junction temperature exceeds
145°C.
Features
• Power Source & Load Fault Protection
• Fast Dynamic Response, with 120ns reverse &
150ns forward over-current turn-off delay time
• 4A gate discharge current
• Accurate back-to-back MOSFETs drain-to-drain
voltage sensing to indicate system level fault
conditions
• Programmable under & over-voltage detection
• Over temperature fault detection
• Programmable over-current Gate off time
• Programmable short circuit load detection
function
• Active low fault flag output
Applications
• N+1 Redundant Power Systems
• Servers & High End Computing
• Telecom Systems
• Active ORing with Load Disconnect
• High current Active ORing
Package Options
The PI2002 is offered in the following packages:
• 3mm x 3mm 10 Lead TDFN package
• 8 Lead SOIC
Typical Applications:
Figure 1a: PI2002 High Side ORing with load disconnect
Figure 1b: PI2002 Low Side Disconnect Switch
Picor Corporation • picorpower.com
PI2002
Rev1.1 Page 1 of 23
1 page  
Electrical Specifications
Unless otherwise specified: -40°C < TJ < 125°C, VC =12V, CVc = 1uF, COCT = 2nF, CGATE = 4nF
OCT
OCT Source Current
OCT Clamp Voltage
OCT Threshold Voltage High
OCT Threshold Voltage Low
OCT OFF
OCT Gate Drive Disable
OCT Sink Current
SCD
IOCTSC
VOCT-CL
VOCT-Hi
VOCT-Lo
TOCT-OFF
VOCT-Lo
IOCTSK
2.2
5
-10
3.2
1.75
0.875
350
10
4.2
500
μA VOCT = 1.25V
V No Fault
V SP=3.3V, SN=0V
V SP=3.3V, SN=0V
µs FOC fault condition
mV IOCT = -100uA
mA VOCT =2.25V SP-SN=125mV
SCD Bias Current
SCD Threshold Voltage High
;SCD Threshold Voltage Low
SCD Hysteresis
Iscd -1
1 μA VSCD=0V
VThSCDR 300 340 380 mV VSP-SN=20mV, VG=1V
VThSCDF
310
mV
VThSCDR -
VThSCDF
25
50
75 mV VSP-SN=20mV, VG=1V
Note 1: These parameters are not production tested but are guaranteed by design, characterization and
correlation with statistical process control.
Note 2: Current sourced by a pin is reported with a negative sign.
Note 3: Refer to the Auxiliary Power Supply section in the Application Information section for details on the VC
requirement to meet the MOSFET Vgs requirement.
www.DataSheet4U.com
Picor Corporation • picorpower.com
PI2002
Rev1.1 Page 5 of 23
5 Page 
www.DataSheet4U.com
Figure 7: Timing diagram for two PI2002 controllers in an Active ORing and Load Disconnect application
Picor Corporation • picorpower.com
PI2002
Rev1.1 Page 11 of 23
11 Page | ||
| Páginas | Total 23 Páginas | |
| PDF Descargar | [ Datasheet PI2002.PDF ] | |
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