PI2126 Datasheet, PDF (6/15 Pages) Vicor Corporation – 30 Volt, 12 Amp Full-Function Active ORing Solution

EOL
VC
VC 8
VR 7
420Ω
+
7.15V -
SP 6
SN 14
11.7V
Differential
Amplifier
+ ^RVS
+
+6mV _-
-
Hys= -12mV
+ ^FWD
0.1μF
+275mV _-
Hys= -25mV
10
PG
Figure 4: PI2126 Internal Block Diagram
EN
2X
Charge
Pump
RVS
Gate
Driver
FWD _FT
11
PG
S
5432
18
19 _S
20
21
GATE
22
23
24
D
24
13 15 16 17 1
FT
D
V_S-PG>4.5V
MOSFET OFF
FT : Low
V_S-PG < 7.15V
SP-SN < +6mV
MOSFET OFF
FT ^{: Low}
Turn Off MOSFET
& Pull FT Low
SP-SN > -6mV
V ^{S-PG< 7.0V}
FT ^{: High}
Turn MOSFET ON &
Hold it in R_DS(on)
FT ^{: High}
FT ^{: Low}
Fault
Recovery
Fault Condition
SP-SN >275mV: Open FET, Gate short or open, High Current
Figure 5: PI2126 State Diagram.
Picor Corporation • picorpower.com
PI2126
Rev 1.1
Page 6 of 15