HIP4086, HIP4086A
Block Diagram (for clarity, only one phase is shown)
If undervoltage is active or if
DIS is asserted, the high and
low-side drivers are turned off.
Drive Enable
Common with
all phases
VDD
Charge
Pump *
EN
16 xHB
xHI 5
Adjustable
Turn-on
DIS 10
10ns
Delay
Level
Shifter
17 xHO
delay
VDD 20
UVLO 8
Undervoltage
Detector
*The charge pump is
permanently disabled
in the HIP4086A.
18 xHS
RFSH 9
Refresh
Pulse
Delay Disable
Common with
all phases
VD D
Common with
xLI 4
RDEL 7
all phases
2μs Delay
If the voltage on RDEL is less than 100mV, the
Adjustable
Turn-on
Delay
Common with
all phases
21 xLO
6 VSS
100mV
Truth Table
turn-on delay timers are disabled and the high and
low-side drivers can be turned on simultaneously .
INPUT
OUTPUT
ALI, BLI, CLI
X
X
1
0
0
1
AHI, BHI, CHI
X
X
X
0
1
0
UV
X
1
0
0
0
0
DIS
1
X
0
0
0
0
RDEL
X
X
>100mV
X
X
<100mV
ALO, BLO, CLO
0
0
1
0
0
1
AHO, BHO, CHO
0
0
0
1
0
1
NOTE: X signifies that input can be either a “1” or “0”.
2
FN4220.9
February 1, 2013
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