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Vicor Corporation

PI2123 Datasheet Preview

PI2123 Datasheet

15 Amp Full-Function Active ORing Solution

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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.
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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




Vicor Corporation

PI2123 Datasheet Preview

PI2123 Datasheet

15 Amp Full-Function Active ORing Solution

No Preview Available !

Pin Description
Pin
Name
D
Pin
Number
1, 15, 16,
17
S 2, 3, 4, 5
SP 6
FT 7
BK 8
SL 9
VC
GND
OV
10
11
12
UV 13
www.DataSheet4U.com
SN 14
Description
Drain- The Drain of the internal N-channel MOSFET, connect to the output load.
Source-The source of the internal N-channel MOSFET, connect to the input power source
bus voltage.
Positive Sense Input & Clamp: Connect SP pin to the S pin. The polarity of the voltage
difference between SP and SN provides an indication of current flow direction through the
MOSFET.
Fault State Output: This open collector pin pulls low when a fault occurs. Fault logic inputs
are VC Under-Voltage, Input Under-Voltage, Input Over-Voltage, Forward Over-Current,
light load, reverse current, and Over-Temperature. Leave this pin open if unused.
Blanking timer Input-Output: Connect a resistor from BK to GND to set the blanking time
for the Reverse Comparator function. To configure in slave mode, connect BK to VC. To
configure in master mode with the fastest turn-off response connect BK directly to GND.
Slave Input-Output: This pin is used for paralleling multiple PI2123 solutions in high power
applications. When configured as the Master, this pin functions as an output capable of
driving up to 10 SL pins of slaved PI2123 devices. It serves as an input when the PI2123 is
configured in slave mode.
Input Supply Pin: This pin is the supply pin for the control circuitry and gate driver.
Connect a 1μF capacitor between VC pin and the GND pin. Voltage on this pin is limited to
15.5V by an internal shunt regulator in high auxiliary voltage applications. For high voltage
auxiliary supply applications connect a shunt resistor between VC and the auxiliary supply.
Ground: This pin is ground for the gate driver and control circuitry.
Input Over Voltage Input: The OV pin is used to detect an input source over-voltage
condition in ground referenced applications. When the OV pin voltage crosses the OV
threshold, the FT pin pulls low indicating a fault condition. The input voltage OV threshold
is programmable through an external resistor divider. Connect OV to GND to disable this
function.
Input Under-Voltage Input: The UV pin is used to detect an input source under-voltage
condition in ground referenced applications. When the UV pin voltage drops below the UV
threshold, the FT pin pulls low indicating a fault condition. The input voltage UV threshold
is programmable through an external resistor divider. Connect UV to VC to disable this
function.
Negative Sense Input & Clamp- Connect SN to D pin. The polarity of the voltage
difference between SP and SN provides an indication of current flow direction through the
MOSFET.
Package Pin-out
17 Pin LGA (5mm x 7mm)
Top view
Picor Corporation • picorpower.com
PI2123
Rev 1.0 Page 2 of 20


Part Number PI2123
Description 15 Amp Full-Function Active ORing Solution
Maker Vicor Corporation
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PI2123 Datasheet PDF






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