DataSheet8.cn


PDF ( 数据手册 , 数据表 ) PI2123

零件编号 PI2123
描述 15 Amp Full-Function Active ORing Solution
制造商 Vicor Corporation
LOGO Vicor Corporation LOGO 


1 Page

No Preview Available !

PI2123 数据手册, 描述, 功能
PI2123
Cool-ORingTM Series
15 Volt, 15 Amp Full-Function Active ORing Solution
Description
The Cool-ORingTM PI2123 is a complete full-function
Active ORing solution with a high-speed ORing
MOSFET controller and a very low on-state
resistance MOSFET designed for use in redundant
power system architectures. The PI2123 Cool-ORing
solution is offered in an extremely small, thermally
enhanced 5mm x 7mm LGA package and can be
used in high side Active ORing applications on bus
voltages up to 9.6V. The PI2123 enables extremely
low power loss with fast dynamic response to fault
conditions, critical for high availability systems. A
master/slave feature allows the paralleling of PI2123
solutions for high current Active ORing
requirements.
The PI2123, with its 3mΩ internal MOSFET provides
very high efficiency and low power loss during
steady state operation, while achieving high-speed
turn-off of the internal MOSFET during input power
source fault conditions that cause reverse current
flow. The PI2123 provides an active low fault flag
output to the system during excessive forward
current, light load, reverse current, over-voltage,
under-voltage and over-temperature fault conditions.
A temperature sensing function indicates a fault if
the maximum junction temperature exceeds 160°C.
www.DaTptarhSoehgerueatn4mdUme.croa-mvboleltavgiaeeaxntedrnoavl erer-sviostltoargdeivtihdreerssh. olds are
Typical Application:
Features
Integrated High Performance 15A, 3mΩ
MOSFET
Very-small, high density fully-optimized solution
providing simple PCB layout.
Fast Dynamic Response to Power Source
failures, with 160ns reverse current turn-off
delay time
Accurate sensing capability to indicate system
fault conditions
Programmable under & over-voltage functions
Over temperature fault detection
Adjustable reverse current blanking timer
Master/Slave I/O for paralleling
Active low fault flag output
Applications
N+1 Redundant Power Systems
Servers & High End Computing
Telecom Systems
High-side Active ORing
High current Active ORing ( 9.6Vbus)
Package Information
17-pin 5mm x 7mm Thermally Enhanced LGA
Package
Figure 1: PI2123 High Side Active ORing
Picor Corporation • picorpower.com
Figure 2: PI2123 input current de-rating based on maximum
TJ=150°C vs. ambient temperature.
PI2123
Rev 1.0 Page 1 of 20







PI2123 pdf, 数据表
FT pin, but do not affect the gate of the MOSFET.
The FT pin serves as an indicator that a fault
condition may be present. This information can be
reported to a Host to signal that some system level
maintenance may be required.
Figure 3: PI2123 Internal Block Diagram
www.DataSheet4U.com
Figure 4: Comparator hysteresis, values are for reference only, please refer to the electrical specifications
Picor Corporation • picorpower.com
PI2123
Rev 1.0 Page 8 of 20







PI2123 equivalent, schematic
Typical Application Example 1:
Requirement:
Redundant Bus Voltage = 5.0V
Load Current = 12A (assume through each
redundant path)
Maximum Ambient Temperature = 75°C: no air flow.
Auxiliary Voltage = 12V (10V to 14V)
Solution:
A single PI2123 for each redundant 5.0V power
source should be used, configured as shown in the
circuit schematic in Figure 22.
Vaux: Since the Vaux voltage does not exceed the
VC pin clamp voltage, connect the Vaux directly to
the VC pin
SP and SN pins: Connect each SP pin to the S pins
and each SN pin to the D pins
BK pin: Connect the BK pin to the ground to
achieve the minimum reverse current response time.
SL pin: Not required, so leave floating
FT pin: Connect to the logic input and to the logic
power supply via a 10Kresistor.
Program UV and OV to monitor input voltage:
Program UV at 4.5V and OV at 5.5V
Use the three-resistor divider configuration:
I Ra = 200μA
www.DatRaSah=ee5t2400U00.cmμomVA = 2.5kΩ or 2.49k1%
Rb
=
2.49kΩ⎜⎛
5.5V
4.5V
1⎟⎞
= 553Ω
or
549
1%
Rc
=
(2.49kΩ
+
549Ω)⎜⎛
4.5V
500mV
1⎟⎞ = 24.3kΩ
1%
Figure 21: Example 1 final junction temperature at
12A/75°C TA
Rds(on) = 4.0mΩ•1.35 = 5.4mΩ maximum at 117°C
RthJA : 54°C/W
TJ = TA + RthJA Is2 Rds(on)
Recalculate TJ:
TJ
= 75°C + ⎜⎛ 54°C (12A)2 5.4mΩ⎟⎞
W
= 116.99°C
Maximum power dissipation at 117°C Junction
Temperature:
Pdmax = Iin2 Rds(on) = (12A)2 5.4mΩ = 777mW
Reverse current threshold is:
The following procedure demonstrates how to
calculate the minimum required reverse current in
the internal MOSFET to generate a reverse fault
condition and turn off the internal MOSFET.
Power Dissipation and Junction Temperature:
First use Figure 13 (Junction Temperature vs. Input
Current) to find the final junction temperature at 12A
load current and 75°C ambient temperature. In
Figure 13 (illustrated in Figure 21) draw a vertical
line from 12A to half way between the TA=70°C and
TA=80°C lines. Then draw a horizontal line towards
the Y-axis (Junction Temperature). The Junction
Temperature at full load current (12A) and 75°C
ambient is 117°C.
Rds(on) is 4.0mmaximum at 25°C and will
increase as the Junction temperature increases.
From Figure 11, at 117°C Rds(on) will increase by
~35%, then
Picor Corporation • picorpower.com
At room temperature (25°C) typical Rds(on):
Is.reverse
=
Vth.reverse
Rds(on)
=
6mV
3.0mΩ
=
2.0 A
At maximum junction temperature (117°C) and
maximum Rds(on):
Is.reverse
=
Vth.reverse
Rds(on)
=
6mV
5.4mΩ
=
1.11A
PI2123
Rev 1.0 Page 16 of 20










页数 20 页
下载[ PI2123.PDF 数据手册 ]


分享链接

Link :

推荐数据表

零件编号描述制造商
PI212124 Amp Full-Function Active ORing SolutionVicor Corporation
Vicor Corporation
PI212212Amp Active ORing SolutionVicor Corporation
Vicor Corporation
PI212315 Amp Full-Function Active ORing SolutionVicor Corporation
Vicor Corporation
PI212512 Amp Full-Function Active ORing SolutionVicor Corporation
Vicor Corporation

零件编号描述制造商
STK15C88256-Kbit (32 K x 8) PowerStore nvSRAMCypress Semiconductor
Cypress Semiconductor
NJM4556DUAL HIGH CURRENT OPERATIONAL AMPLIFIERNew Japan Radio
New Japan Radio
EL1118-G5 PIN LONG CREEPAGE SOP PHOTOTRANSISTOR PHOTOCOUPLEREverlight
Everlight


DataSheet8.cn    |   2020   |  联系我们   |   搜索  |  Simemap