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80V, 500mA, 3-Phase MOSFET Driver
HIP4086, HIP4086A
The HIP4086 and HIP4086A (referred to as the HIP4086/A) are
three phase N-Channel MOSFET drivers. Both parts are
specifically targeted for PWM motor control. These drivers have
flexible input protocol for driving every possible switch
combination. The user can even override the shoot-through
protection for switched reluctance applications.
The HIP4086/A have a wide range of programmable dead times
(0.5μs to 4.5μs) which makes them very suitable for the low
frequencies (up to 100kHz) typically used for motor drives.
The only difference between the HIP4086 and the HIP4086A is
that the HIP4086A has the built-in charge pumps disabled. This
is useful in applications that require very quiet EMI performance
(the charge pumps operate at 10MHz). The advantage of the
HIP4086 is that the built-in charge pumps allow indefinitely long
on times for the high-side drivers.
To insure that the high-side driver boot capacitors are fully
charged prior to turning on, a programmable bootstrap refresh
pulse is activated when VDD is first applied. When active, the
refresh pulse turns on all three of the low-side bridge FETs while
holding off the three high-side bridge FETs to charge the
high-side boot capacitors. After the refresh pulse clears, normal
operation begins.
Another useful feature of the HIP4086/A is the programmable
undervoltage set point. The set point range varies from 6.6V to
8.5V.
VDD
Features
? Independently drives 6 N-Channel MOSFETs in three phase
bridge configuration
? Bootstrap supply max voltage up to 95VDC with bias supply
from 7V to 15V
? 1.25A peak turn-off current
? User programmable dead time (0.5μs to 4.5μs)
? Bootstrap and optional charge pump maintain the high-side
driver bias voltage.
? Programmable bootstrap refresh time
? Drives 1000pF load with typical rise time of 20ns and Fall
Time of 10ns
? Programmable undervoltage set point
Applications
? Brushless Motors (BLDC)
? 3-phase AC motors
? Switched reluctance motor drives
? Battery powered vehicles
? Battery powered tools
Related Literature
? AN9642 “HIP4086 3-Phase Bridge Driver Configurations and
Applications”
200
VDD
RDEL
CHB
BHB
AHB
AHO
BHO
Battery
150
V xHB - V xHS = 10V
Speed
Controller
AHI
ALI
BHI
BLI
CHO
CHS
BHS
AHS
24V...48V
100
Brake
CHI
CLI
VSS
ALO
BLO
CLO
50
0
-60
-40
-20
0
20
40
60
80
100 120 140 160
JUNCTION TEMPERATURE (°C)
FIGURE 1. TYPICAL APPLICATION
FIGURE 2. CHARGE PUMP OUTPUT CURRENT
February 1, 2013
FN4220.9
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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