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PI2126 Datasheet, PDF (2/15 Pages) Vicor Corporation – 30 Volt, 12 Amp Full-Function Active ORing Solution
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Pin Description
Pin
Name
D
Pin Number
1, 15, 16 17,
22, 23, 24, 25
S
2, 3, 4, 5, 18,
19, 20, 21
SP
6
VR
7
VC
8
NC
9, 12
PG
10, 11
13
SN
14
Description
Drain: The Drain of the internal N-channel MOSFET. Connect this pin to the output load.
Source: The source of the internal N-channel MOSFET. Connect this pin to the input power
source bus voltage.
Positive Sense Input & Clamp: Connect SP pin to the trace between S pin and the input source
(outside of the PI2126 foot print). The polarity of the voltage difference between SP and SN
provides an indication of current direction through the MOSFET.
Controller Input Supply With Limiting Resistor: This pin is connected internally to VC through
a 420Ω resistor added for Bus voltages greater than 10V and less than 14V.
Controller Input Supply: This pin is the supply pin for the control circuitry and gate driver.
Voltage on this pin is regulated to 11.7V with respect to PG pin by an internal shunt regulator.
Not Connected: Leave these pins unconnected.
Control Circuitry Return: These pins are ground return for the gate driver and control circuitry.
In 12V applications connect these pins to ground.
Fault Status Output: This open collector pin pulls low after a delay when a reverse fault or a
forward fault occurs. When the input voltage to the control circuitry is in under voltage, VVC-PG <
7V this pin pulls low. When VVC-PG > 7.15V and 6mV < SP-SN < 275mV this pin clears (High).
Leave this pin unconnected if unused.
Negative Sense Input: Connect SN pin to the trace between D pin and the output load (outside
of the PI2126 foot print). The polarity of the voltage difference between SP and SN provides an
indication of current direction through the MOSFET.
Package Pin-Out
S
2
S 3 18 S
19 S
S 4 20 S
21 S
S5
D
1
D 22
D 23
D 24
D 25
17 D
16 D
15 D
SP 6 PI2126
14 SN
VR 7
13 FT
8 9 10 11 12
VC NC PG PG NC
25-pin LGA (5mm x 7mm)
Top view
Picor Corporation • picorpower.com
PI2126
Rev 1.1
Page 2 of 15
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