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PI2001 Datasheet(PDF) 16 Page - Vicor Corporation

Part # PI2001
Description  Universal Active ORing Controller IC
PDF  23 Pages
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Manufacturer  VICOR [Vicor Corporation]
Direct Link  http://www.vicorpower.com
Logo VICOR - Vicor Corporation

PI2001 Datasheet(HTML) 16 Page - Vicor Corporation

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Recalculate based on calculated Junction
temperature, 115°C.
At 115°C Rds(on) will increase by 32%.
Ω
=
∗
Ω
=
m
m
on
Rds
62
.
4
32
.
1
5
.
3
)
(
C
m
A
W
C
C
T
J
°
=
⎟
⎠
⎞
⎜
⎝
⎛
Ω
∗
∗
°
+
°
=
5
.
116
62
.
4
)
15
(
40
75
2
max
3. Vaux: Make sure Vaux voltage is higher than Vin
(power source output) by the voltage required to
fully enhance the MOSFET. Minimum required
Vaux = Vin + Vgs + 0.5V = 3.3V + 4.5V + 0.5V =
8.3V. Since 8.3V is less than the 11V minimum
Aux supply voltage, there is sufficient voltage
available to drive the gate of the MOSFET.
4. SP and SN pins: Connect the SP pin to the
MOSFET source pin and the SN pin to the
MOSFET drain pin.
5. BK pin: Connect the BK pin to the GND pin to
achieve the minimum reverse current response
time.
6.
SL pin: Not required, so leave floating.
7.
FT pin: Connect to the logic input and to the
logic power supply via a 10KΩ resistor.
8. Program UV and OV to monitor input voltage:
Program UV at 3.0V and OV at 3.6V
Use the three-resistor divider configuration:
A
I
Ra
μ
200
=
Ω
=
=
=
k
A
mV
I
UV
V
Ra
Ra
TH
5
.
2
200
500
)
(
μ
or 2.49kΩ 1%
⎟⎟
⎠
⎞
⎜⎜
⎝
⎛
−
=
1
)
(
)
(
UV
V
OV
V
Ra
Rb
Ω
=
⎟
⎠
⎞
⎜
⎝
⎛
−
Ω
=
498
1
0
.
3
6
.
3
49
.
2
V
V
k
or 499Ω 1%
()
⎟⎟
⎠
⎞
⎜⎜
⎝
⎛
−
+
=
1
)
(
)
(
TH
UV
V
UV
V
Rb
Ra
Rc
()
Ω
=
⎟
⎠
⎞
⎜
⎝
⎛
−
Ω
+
Ω
=
k
mV
V
k
95
.
14
1
500
0
.
3
499
49
.
2
or 15kΩ 1%
Figure 15:
PI2001 in high side Active ORing
configuration
Picor Corporation • picorpower.com
PI2001
Rev 1.0
Page 16 of 23



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